Astrra Chemicals
Astrra Chemicals
Chennai, Tamil Nadu
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FRP Raw Material

Pioneers in the industry, we offer micronised silica (grade superfine - 325 mesh ), poly resin marble powder (marblo xl d ) ( grade - super ), snow white quartz silica powder, pure silica powder, aluminium trihydrate hydroxide ath hydrate and french chalk powder ( grade - a 2) from India.

Micronised Silica (Grade Superfine - 325 Mesh )

Micronised Silica (Grade Superfine - 325 Mesh )
  • Micronised Silica (Grade Superfine - 325 Mesh )
  • Micronised Silica (Grade Superfine - 325 Mesh )
  • Micronised Silica (Grade Superfine - 325 Mesh )
  • Micronised Silica (Grade Superfine - 325 Mesh )
  • Micronised Silica (Grade Superfine - 325 Mesh )
  • Micronised Silica (Grade Superfine - 325 Mesh )
  • Micronised Silica (Grade Superfine - 325 Mesh )
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Approx. Price: Rs 23 / KgGet Latest Price
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Product Details:

GradeGlass
SiO2 Content99%
Mesh Size325 Mesh
Grade StandardTechnical Grade
Packaging Size50 kgs Bag
State/FormPowder
Precipitation StateMicronised
ColorWhite
Usage/ApplicationIndustrial
Physical StatePowder
Packaging TypeBrand New PP Bags
Country of OriginMade in India

Micronised Silica Powder – Grade 325 for FRP, composite, and resin systems, suitable for technical datasheets, product brochures, specifications, and customer communications.

Micronised Silica Powder – Grade 325Uses & Applications in FRP / Composite / Resin SystemsProduct Overview

Micronised Silica Powder Grade 325 is a finely ground, high-purity crystalline silica with a typical particle size ≤45 microns, offering excellent dispersion, uniform particle distribution, and consistent performance in Fiber Reinforced Plastics (FRP) and polymer composite formulations. Owing to its high hardness, chemical inertness, and controlled fineness, Grade-325 silica functions as an effective reinforcing filler, rheology modifier, surface improver, and cost-efficient extender.

It is compatible with unsaturated polyester, vinyl ester, epoxy, phenolic, and polyurethane resin systems.

Key Functional Roles in FRP & Composite Systems1. Reinforcing Filler for Mechanical Strength
  • Improves compressive strength, hardness, and abrasion resistance

  • Enhances load-bearing capacity of filled resin matrices

  • Reduces resin shrinkage and micro-cracking during curing

Applications:

  • FRP panels and laminates

  • Structural mouldings

  • Industrial enclosures and housings

2. Rheology Control & Processing Stability
  • Provides controlled viscosity increase without excessive thickening

  • Improves fiber wet-out and resin flow control

  • Minimizes resin run-off in vertical or inclined laminations

Suitable for:

  • Hand lay-up

  • Spray-up processes

  • Filament winding and pultrusion resin systems

3. Surface Finish Enhancement
  • Fine particle size enables smooth surface finish and improved mold replication

  • Reduces pinholes, waviness, and surface irregularities

  • Enhances aesthetic quality of exposed FRP parts

Common in:

  • Gel coats

  • Top coats

  • Decorative FRP panels

4. Dimensional Stability & Shrinkage Control
  • Reduces post-cure deformation and warpage

  • Improves dimensional accuracy of molded components

  • Stabilizes resin systems during thermal cycling

5. Cost Optimization & Resin Extension
  • Allows higher filler loading while maintaining performance

  • Reduces overall resin consumption

  • Improves formulation consistency in large-volume FRP production

6. Chemical & Environmental Resistance
  • Chemically inert to acids, alkalis, and solvents

  • Enhances durability of FRP components exposed to chemicals, moisture, and outdoor environments

  • Improves long-term stability in corrosive service conditions


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Poly Resin Marble Powder (Marblo XL D ) ( Grade - Super )

Poly Resin Marble Powder (Marblo XL D ) ( Grade - Super )
  • Poly Resin Marble Powder (Marblo XL D ) ( Grade - Super )
  • Poly Resin Marble Powder (Marblo XL D ) ( Grade - Super )
  • Poly Resin Marble Powder (Marblo XL D ) ( Grade - Super )
  • Poly Resin Marble Powder (Marblo XL D ) ( Grade - Super )
  • Poly Resin Marble Powder (Marblo XL D ) ( Grade - Super )
  • Poly Resin Marble Powder (Marblo XL D ) ( Grade - Super )
  • Poly Resin Marble Powder (Marblo XL D ) ( Grade - Super )
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Approx. Price: Rs 25 / KgGet Latest Price
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Product Details:

Minimum Order Quantity25 Kg
CaCO3 Content99 %
Packaging Size50 KGS
Whiteness96 %
Mesh Size400 Mesh
StatePowdered
Packaging TypeHDPE Bag, 50 KGS
ColorWhite
Grade StandardPoly / Resin Statue & Marble Statues Application and Artificial Marble
UsagePOLY RESIN STATUE
BrandASTRRA
Physical StatePOWDER
Country of OriginMade in India

We are the leading manufactures, exporters,technical developers and suppliers of Marble Powder (Marblo XL D) ( Super ) ( Poly / Resin Statue & Marble Statues Application ) and Artificial Marble in Chennai, Tamil Nadu, 

Uses & Applications of Marble Powder (Marblo XL D) (Super) for Poly/Resin Statues, Marble Statues & Artificial Marble Applications

Marble Powder (Marblo XL D) (Super) is a high-purity, ultra-fine, micronized marble powder specifically designed for polyester resin statues, marble statues, and artificial marble applications. It offers excellent whiteness, smoothness, and compatibility with resin systems, making it a preferred filler material.

1. Poly/Resin Statue Manufacturing
  • Enhances Strength & Durability: Improves mechanical properties of resin-based statues.

  • Improves Surface Finish: Provides a smooth, glossy texture and fine details in sculptures.

  • Reduces Shrinkage & Cracks: Ensures dimensional stability and prevents warping.

  • Better Resin Compatibility: Optimized for use with polyester and epoxy resins for seamless bonding.

2. Marble Statue Production
  • Increases Hardness & Density: Replicates the look and feel of natural marble.

  • Enhanced Carvability & Detailing: Allows for intricate designs and smooth finishes.

  • UV & Weather Resistance: Helps statues withstand outdoor exposure.

  • Lightweight Composition: Reduces weight while maintaining strength, making transportation easier.

3. Artificial Marble & Engineered Stone
  • Gives a Natural Marble-Like Appearance: Mimics real marble texture and aesthetics.

  • Improves Workability: Enhances moldability for casting countertops, tiles, and slabs.

  • Enhances Shine & Gloss: Contributes to a polished and high-luster surface.

  • Increases Durability & Impact Resistance: Reduces brittleness and enhances product lifespan.

  • Heat & Stain Resistance: Ensures long-lasting quality in engineered stone applications.

Additional Benefits of Marblo XL D (Super) in Artificial Marble & Resin Applications:

High Purity & Whiteness – Provides excellent brightness for premium-quality statues and artificial marble.
Fine Particle Size – Ensures better dispersion, smooth texture, and improved casting properties.
Reduced Porosity – Prevents air bubbles and enhances the finish of final products.
Excellent Chemical Stability – Resists yellowing and degradation over time.

Key Applications
  • Polyester Resin & Epoxy-Based Statues

  • Artificial Marble Slabs, Tiles, and Countertops

  • Decorative Moldings & Sculptures

  • High-Quality Marble-Effect Furniture

  • Interior & Exterior Architectural Elements

 

 

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Additional Information:

  • Production Capacity: 10000 TONS
  • Delivery Time: WITHIN 3 DAYS
  • Packaging Details: BRAND NEW HDPE BAGS
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Snow White Quartz Silica Powder

Snow White Quartz Silica Powder
  • Snow White Quartz Silica Powder
  • Snow White Quartz Silica Powder
  • Snow White Quartz Silica Powder
  • Snow White Quartz Silica Powder
  • Snow White Quartz Silica Powder
  • Snow White Quartz Silica Powder
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Approx. Price: Rs 20.0 / KgGet Latest Price
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Product Details:

Minimum Order Quantity50 Kg
SiO2 Content99%
Mesh Size100 Mesh
Grade36
Packaging Size50 Kg/bag
Usage/ApplicationIndustrial
StatePowdered
Purity (%)99.9
Packaging TypeHDPE Bag
BrandAstrra Chemicals
Country of OriginMade in India
FormulaSiO2

We have emerged as a prominent manufacturer, supplier, wholesaler and exporter of high quality Silica Powder ( Pure Fine ) highly suitable for FRP FIBREGLASS FILLER APPLICATION. Based in Chennai - Tamil Nadu - India FRP FILLER MATERIAL / FRP MATERIAL Silica Powder Pure Fine ( Mycosil) ( FRP filler) In the FRP / Composite Industry it is used as a :- Filler Thickening Agent Body Hardener
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Additional Information:

  • Production Capacity: 100000
  • Delivery Time: Immediate
  • Packaging Details: 50 Kgs Brand New PP Bags
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Pure Silica Powder

Pure Silica Powder
  • Pure Silica Powder
  • Pure Silica Powder
  • Pure Silica Powder
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Approx. Price: Rs 18.5 / KgGet Latest Price
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Product Details:

Minimum Order Quantity100 Kg
SiO2 Content99.5%
Mesh Size325 Mesh
GradeFRP
Purity99%
Usage/ApplicationConstruction Industry
Physical StatePowder
Pack TypeHDPE Bag
Molar Mass60.08 g/mol
BrandAstrra Chemicals
FormulaSiO2
Packaging Size25 kg
Pack Size50 Kg

We have emerged as a prominent manufacturer, supplier, wholesaler and exporter of high quality Silica Powder ( Pure Fine ) highly suitable for FRP FIBREGLASS FILLER APPLICATION. Based in Chennai - Tamil Nadu - India 

Pure Silica Powder (also known as precipitated silica, amorphous silica, or ground quartz powder, depending on the grade) plays a crucial role in FRP (Fiber-Reinforced Plastic) and composite applications due to its chemical inertness, high hardness, thermal stability, and reinforcing properties.

Uses & Applications of Pure Silica Powder in FRP / Composite Industries🔩 1. Filler in FRP Composites
  • Used as an inert filler in polyester, vinyl ester, and epoxy resin systems.

  • Reduces resin content (cost-saving), while maintaining volume and dimensional stability.

  • Enhances mechanical strength, abrasion resistance, and hardness of the composite.

  • Helps control viscosity and improves surface finish of molded parts.

🧱 2. Reinforcement & Dimensional Stability
  • Provides rigidity and compressive strength without compromising fiber orientation.

  • Improves impact resistance and thermal expansion properties.

  • Maintains part tolerances over temperature cycles.

🛢️ 3. Thixotropy and Rheology Control
  • Especially in amorphous or fumed silica forms, it imparts thixotropic properties to resin systems.

  • Prevents sagging or settling in vertical or complex molds.

  • Ensures uniform dispersion of resins during lamination or molding.

🚤 4. Tooling, Marine & Structural Applications
  • Commonly used in FRP mold/tooling boards, boat hulls, panels, and automotive parts.

  • Enhances wear and thermal resistance in GRP (glass-reinforced plastic) tools.

🎨 5. Surface Finish & Aesthetics
  • Ultra-fine grades of silica improve surface smoothness in gel coats or topcoats.

  • Helps reduce shrinkage and pinholes in finished parts.

💡 6. Flame Retardancy (with Synergists)
  • While pure silica is not itself a flame retardant, it can support flame-retardant systems by:

    • Acting as a heat sink.

    • Forming protective barriers with other additives (like alumina trihydrate or phosphorus compounds).

🌟 Key Benefits of Using Pure Silica Powder in FRP
  • Cost-effective filler

  • Chemically inert (non-reactive with resins)

  • Thermal and UV resistance

  • High hardness (Mohs ~7)

  • Improves mechanical and surface properties

📌 Selection Tips:
Property Preferred Silica Type
Thixotropy Fumed/hydrophilic silica
Cost-effective filler Ground quartz/micronized silica
Surface finish Ultra-fine precipitated silica
Flame synergy Amorphous silica + FR agents
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Aluminium Trihydrate Hydroxide Ath Hydrate

Aluminium Trihydrate Hydroxide Ath Hydrate
  • Aluminium Trihydrate Hydroxide Ath Hydrate
  • Aluminium Trihydrate Hydroxide Ath Hydrate
  • Aluminium Trihydrate Hydroxide Ath Hydrate
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Approx. Price: Rs 72 / KgGet Latest Price
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Product Details:

Minimum Order Quantity50 Kg
GradeIndustrial Grade
Purity99%
FormPowder
Particle Size5–10 µm
ApplicationFlame Retardant
Packaging Size50 kg/bag
Physical StatePowder
BrandAstrra Chemicals
Packaging TypeHDPE Bag
Chemical FormulaAl(OH)3
Moisture Content≤0.3%
Country of OriginIndia
Molar mass78 g/mol

Aluminium Trihydrate( A.T.H.) (Fire Retardant) We have emerged as a prominent manufacturer, supplier, wholesaler and exporter of high quality Aluminium Trihydrate ( A.T.H.) FIRE RETARDANT highly suitable for FRP FIBREGLASS FILLER APPLICATION. Based in Chennai - Tamil Nadu - India

Typical Cemical Analysis:

Chemical Propertie

Typical Limits (%) – ATH - 325

Free Moisture at 110 deg.C`

0. 03 – 0. 50

L.O.I. I is determined at 1050 deg.C

34 . 50 – 35. 00

SiO2

0. 014 – 0. 020

Fe2O3

0. 013 – 0. 020

TiO2

0. 004 – 0. 007

Al2O3

64. 00 – 65. 00

Na2O (Total)

0. 28 – 0. 35

AL (OH)3

98. 50 – 99. 80


Physical Propertie:

Physical Properties

ATH – 325 percent

On + 100 ( 149 Microns)

-

On + 200 ( 75 Microns)

-

On + 325 ( 45 Microns)

5 Max.

Through – 325 ( 45 Microns)

95

Bulk Density ( gm/cc)

0. 85 – 1. 04

Oil absorption (ml/100g)

25 - 28

 

 

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French Chalk Powder ( Grade - A 2)

French Chalk Powder ( Grade - A 2)
  • French Chalk Powder ( Grade - A 2)
  • French Chalk Powder ( Grade - A 2)
  • French Chalk Powder ( Grade - A 2)
  • French Chalk Powder ( Grade - A 2)
  • French Chalk Powder ( Grade - A 2)
  • French Chalk Powder ( Grade - A 2)
  • French Chalk Powder ( Grade - A 2)
  • French Chalk Powder ( Grade - A 2)
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Approx. Price: Rs 11.5 / KgGet Latest Price
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Product Details:

Minimum Order Quantity50 Kg
MgO Content32 %
Packaging Size50 kgs
Whiteness94 %
Mesh Size300 Mesh
Packaging Type50 kgs
StatePowdered
GradeA2
ColorWHITE
BrandASTRRA
Country of OriginMade in India

FRENCH CHALK POWDER ( GRADE - A 2 )

 We are the leading manufactures, exporters,technical developers and suppliers  French Chalk Powder in Chennai, Tamil Nadu, 

Uses & Applications of French Chalk / Putty Powder (Grade - A2) for FRP / Composite / Resin & Various Applications

French Chalk, also known as Talcum Powder or Putty Powder, is a naturally occurring form of hydrated magnesium silicate. When processed to Grade A2 quality, it finds wide applications due to its fine particle size, high whiteness, smooth texture, and inert chemical properties.

Key Applications: 1. FRP (Fibre Reinforced Plastics):
  • Filler and Extender: Enhances mechanical strength, thermal resistance, and dimensional stability of FRP components.

  • Surface Finish: Improves smoothness and reduces shrinkage during molding.

  • Weight Reduction: Acts as a lightweight filler to lower overall component density.

2. Composites:
  • Matrix Reinforcement: Blended with polyester, epoxy, or vinyl ester resins for improved structural integrity.

  • Cost Efficiency: Reduces consumption of expensive resins without compromising properties.

  • Surface Properties: Enhances gloss, polish, and workability of finished composites.

3. Resin Applications:
  • Viscosity Control: Acts as a thixotropic agent in resins, improving workability and application.

  • Anti-Sagging Agent: Prevents sag in vertical resin applications.

  • Improved Dispersion: Provides uniform texture and minimizes cracking in cast and molded parts.

Other Applications: 4. Paints & Coatings:
  • Works as a pigment extender and provides a matte finish.

  • Enhances scrub resistance and anti-settling properties.

5. Putties & Sealants:
  • Acts as a bulk filler in wall putties and automotive body fillers.

  • Increases smoothness and easy sanding properties.

6. Rubber & Plastics:
  • Improves processability, tensile strength, and heat resistance.

7. Ceramics & Tiles:
  • Acts as a flux and improves surface glaze properties.

Key Properties of Grade - A2 French Chalk:
  • High Purity

  • Whiteness >90%

  • Fine Particle Size (typically <25 microns)

  • Oil Absorption & Softness

  • Inert to most chemicals

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  • Production Capacity: 10000 TONS
  • Delivery Time: 2- 3 DAYS
  • Packaging Details: BRAND NEW HDPE BAGS
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Silica Sand Powder Sio2 99.5% ( Grade - 60 / 120 M )

Silica Sand Powder Sio2 99.5% ( Grade - 60 / 120 M )
  • Silica Sand Powder Sio2 99.5% ( Grade - 60 / 120 M )
  • Silica Sand Powder Sio2 99.5% ( Grade - 60 / 120 M )
  • Silica Sand Powder Sio2 99.5% ( Grade - 60 / 120 M )
  • Silica Sand Powder Sio2 99.5% ( Grade - 60 / 120 M )
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Approx. Price: Rs 20 / KgGet Latest Price
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Product Details:

GradeConstruction
Grain Size0.2–0.5 mm
Usage/ApplicationConstruction
SiO2 Content99.5%
SiO₂ Content≥ 99%
Mesh Size150 Mesh
Purity GradeConstruction Grade
Silica Content99%
Packaging detail50 Kg Bag
ApplicationConstruction
FormPowder
Packaging Size50 kg
ColorGrey

Pure Silica Grits 60/120 refer to crystalline silica particles (typically quartz) that are graded to sizes between 60 mesh (approx. 250 microns) and 120 mesh (approx. 125 microns). This medium-fine grit size is widely used in various industrial processes due to its hardness, chemical purity, and thermal stability.

Uses & Applications of Pure Silica Grits (60/120 mesh) �� 1. Surface Preparation & Sandblasting
  • Ideal for abrasive blasting to clean metal, stone, or concrete surfaces.

  • Removes rust, old paint, scale, and coatings efficiently.

  • Prepares surfaces for coating or painting (especially in marine or construction industries).

��️ 2. Construction & Building Materials
  • Added to epoxy flooring systems and grouts for anti-slip properties.

  • Used in terrazzo flooring and decorative concrete as an aggregate.

  • Fills gaps and voids in cementitious materials, enhancing durability.

�� 3. Glass Manufacturing
  • Used as a raw material in glass melting due to its high SiO₂ content.

  • Helps improve thermal resistance and optical clarity in specialty glass.

�� 4. Ceramics & Refractories
  • Functions as a fluxing agent and filler in ceramic bodies and glazes.

  • Used in manufacturing refractory bricks and linings for furnaces due to its high melting point and thermal shock resistance.

�� 5. Foundry Industry
  • Used in core and mold making for precision castings.

  • Maintains dimensional accuracy and withstands high temperatures in metal casting.

��️ 6. Oil & Gas / Hydraulic Fracturing
  • Sometimes used in frac sand blends (if meeting purity and strength specs).

  • Helps prop open fractures in shale to allow gas/oil flow.

�� 7. Filtration Media
  • Utilized in water and wastewater filtration systems.

  • Acts as a multi-layered filter bed component due to its consistent particle size and chemical inertness.

�� 8. Industrial Abrasives
  • Used in grinding, polishing, and lapping of stone, metal, or glass surfaces.

  • Suitable for vibratory finishing or tumbling operations.

��️ 9. Paints & Coatings
  • Acts as a functional filler to improve durability, abrasion resistance, and film hardness.

  • Improves anti-skid properties in floor and road coatings.

�� Key Benefits of 60/120 Mesh Silica Grit
  • Medium-fine grit ideal for balanced abrasion and surface smoothness.

  • High purity (typically >99% SiO₂) ensures chemical inertness.

  • High Mohs hardness (~7) for long-lasting performance.

  • Thermal stability and non-reactivity in harsh environments.

 

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FRENCH CHALK / PUTTY POWDER (GRADE A2)

FRENCH CHALK / PUTTY POWDER (GRADE A2)
  • FRENCH CHALK / PUTTY POWDER (GRADE A2)
  • FRENCH CHALK / PUTTY POWDER (GRADE A2)
  • FRENCH CHALK / PUTTY POWDER (GRADE A2)
  • FRENCH CHALK / PUTTY POWDER (GRADE A2)
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Approx. Price: Rs 11.50 / KgGet Latest Price
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Product Details:

Minimum Order Quantity100 Kg
MgO Content32 %
Packaging Size50 kg
Whiteness92 %
Mesh Size300 Mesh
ApplicationPlastics, Detergent, FRP, Rubber, Ceramics, Paints, Paper
Oil Absorption40 g/100g
pH Value7.0
Packaging TypeBrand New PP Bags
StatePowdered
ColorWhite
Moisture< 1 %
FormMicronized
Country of OriginMade in India

French Chalk / Putty Powder (Grade A2) is a finely ground, high-purity form of natural talc (hydrated magnesium silicate). Known for its smoothness, whiteness, softness, and chemical inertness, it is widely used across multiple industries for its functional and aesthetic properties.

Here’s a brief summary of the uses and applications of French Chalk / Putty Powder (Grade A2):

1. Paints and Coatings
  • Purpose: Extender and filler.

  • Applications:

    • Enhances smoothness, opacity, and suspension in paints.

    • Provides matte finish and anti-settling properties in decorative and industrial coatings.

2. Wall Putty and Plaster
  • Purpose: Filler and levelling agent.

  • Applications:

    • Used in wall putty formulations to provide a smooth finish and easy spreadability.

    • Improves crack resistance and surface whiteness in wall coatings.

3. Rubber and Plastics Industry
  • Purpose: Reinforcing filler.

  • Applications:

    • Enhances mechanical strength, mold release, and processability in rubber and plastic compounds.

    • Acts as an anti-blocking and anti-caking agent in films and sheets.

4. Ceramics and Whiteware
  • Purpose: Flux and filler.

  • Applications:

    • Used in ceramic bodies for whiteness, smooth surface, and thermal shock resistance.

    • Reduces firing temperatures and improves workability.

5. Paper Industry
  • Purpose: Coating pigment and filler.

  • Applications:

    • Increases opacity, brightness, and printability of paper and board products.

6. Cosmetics and Personal Care
  • Purpose: Absorbent and texturizer.

  • Applications:

    • Used in face powders, body talcs, and soaps for smooth feel and oil/moisture absorption.

7. Textile Industry
  • Purpose: Lubricant and anti-tack agent.

  • Applications:

    • Applied as a dry lubricant on yarns and threads to reduce friction.

    • Prevents sticking and tangling during textile processing.

8. Pharmaceuticals
  • Purpose: Excipient and anti-caking agent.

  • Applications:

    • Used as a glidant and carrier in tablet production and topical powders.

9. Welding Electrode Manufacturing
  • Purpose: Coating component.

  • Applications:

    • Acts as a moisture-resistant and thermal insulating filler in flux coatings for welding rods.

10. Polishing and Cleaning
  • Purpose: Mild abrasive.

  • Applications:

    • Used in metal polishing, cleaning powders, and furniture polish formulations for a smooth buffing action.

Key Features of Grade A2 French Chalk / Putty Powder:

  • High purity and fine particle size.

  • Excellent whiteness and smooth texture.

  • Chemically inert, non-toxic, and non-reactive.

 

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  • Production Capacity: 100000
  • Delivery Time: IMMEDIATE
  • Packaging Details: BRAND NEW PP BAGS
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Micronised Silica (Grade - 800 M)(Pure White)

Micronised Silica (Grade - 800 M)(Pure White)
  • Micronised Silica (Grade - 800 M)(Pure White)
  • Micronised Silica (Grade - 800 M)(Pure White)
  • Micronised Silica (Grade - 800 M)(Pure White)
  • Micronised Silica (Grade - 800 M)(Pure White)
  • Micronised Silica (Grade - 800 M)(Pure White)
  • Micronised Silica (Grade - 800 M)(Pure White)
  • Micronised Silica (Grade - 800 M)(Pure White)
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Approx. Price: Rs 23 / KgGet Latest Price
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Product Details:

GradeFRP
SiO2 Content99.5%
Mesh Size800
Packaging Size50 kg
Purity99%
Usage/ApplicationConstruction Industry
ColorWhite
Country of OriginMade in India

Here’s a detailed overview of the Uses & Applications of Micronised Silica (Grade – 800 M, Pure White) across various industries:

What is Micronised Silica – Grade 800 M (Pure White)?

Micronised Silica, also known as precipitated or natural amorphous silica, is a very fine, high-purity white powder. Grade 800 M typically refers to an ultra-fine particle size with high brightness and surface area, optimized for functional and aesthetic performance.

  • Particle Size: Approx. 5–10 microns (D90) or finer

  • Whiteness: > 96%

  • Purity: > 99% SiO₂

  • Oil Absorption: High

  • pH: Neutral to slightly alkaline

�� Uses & Applications of Micronised Silica (Grade 800 M): �� 1. Paints, Coatings & Inks
  • Matting agent: Reduces gloss while maintaining smooth texture.

  • Rheology modifier: Improves thickening and anti-settling behavior.

  • Enhances abrasion resistance, film strength, and water repellency.

  • Acts as an extender pigment, replacing costly TiO₂ in white paints.

�� 2. Construction & Dry Mix Mortars
  • Used in tile adhesives, grouts, plasters, and waterproofing compounds.

  • Improves workability, smoothness, and anti-sag properties.

  • Enhances durability and compressive strength in cementitious systems.

�� 3. Rubber & Plastics
  • Functions as a reinforcing filler in natural and synthetic rubber products.

  • Improves tensile strength, tear resistance, and flexibility.

  • Acts as an anti-blocking, anti-caking, and flow-aid agent in plastics and polymers.

�� 4. Wood Finishes & Putties
  • Provides smoothness and body to wood coatings and putties.

  • Improves sandability and helps achieve a uniform finish.

�� 5. Electronics & Polishing
  • Used in CMP (Chemical Mechanical Polishing) slurries for silicon wafers.

  • Acts as a gentle abrasive in precision polishing of optical components.

�� 6. Cosmetics & Personal Care
  • Used in powders, foundations, and creams for oil absorption and texture enhancement.

  • Improves skin feel, mattifying effect, and flowability.

�� 7. Animal Feed (Selective Use)
  • In some formulations, used as a flow aid or anti-caking agent.

�� 8. Detergents & Cleaning Agents
  • Provides mild abrasiveness in scouring powders and toothpaste.

  • Enhances free-flowing properties in powdered detergents.

Key Advantages of Grade 800 M Micronised Silica:
  • High whiteness and purity

  • Excellent oil absorption and surface area

  • Chemically inert and non-toxic

  • Compatible with solvent- and water-based systems

  • Improves mechanical strength and weathering resistance

�� Typical Packaging:
  • HDPE or Kraft bags: 25 kg / 50 kg

  • Jumbo bags: 1 MT (customizable)

  • Moisture barrier inner liners available on request


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Pure Silica Powder

Pure Silica Powder
  • Pure Silica Powder
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Approx. Price: Rs 20 / KgGet Latest Price
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Product Details:

Minimum Order Quantity100 Kg
SiO2 Content99.5%
Mesh Size325 Mesh
GradeMycosil - 200M
Packaging Size50 kg
Purity99%
FormPowder
Usage/ApplicationConstruction Industry
Packaging TypeHDPE Bag
ColorWhite
BrandAstrra Chemicals
Country of OriginMade in India

Uses & Applications of Pure Silica Powder / Sand / Grits for FRP, composite, and resin systems, suitable for technical datasheets, brochures, tenders, and customer presentations.

Pure Silica Powder / Sand / GritsUses & Applications in FRP / Composite / Resin SystemsOverview

Pure Silica (SiO₂), available in micronized powder, graded sand, and controlled-size grits, is one of the most widely used functional fillers and reinforcing extenders in Fiber Reinforced Plastics (FRP) and polymer composite formulations. Owing to its high hardness, chemical inertness, thermal stability, and controlled particle size distribution, silica plays a critical role in enhancing mechanical strength, dimensional stability, surface finish, and cost optimization of resin-based systems.

Pure silica is compatible with unsaturated polyester, vinyl ester, epoxy, phenolic, and polyurethane resins.

Functional Roles in FRP & Composite Systems1. Reinforcing Filler for Mechanical Strength
  • Improves compressive strength, abrasion resistance, and hardness

  • Enhances load-bearing capacity in filled resin systems

  • Reduces resin-rich zones and shrinkage stresses

Applications:

  • FRP panels and gratings

  • Structural laminates

  • Machine housings and industrial enclosures

2. Rheology Control & Viscosity Modification
  • Micronized silica powder provides controlled viscosity build-up

  • Improves flow control without adversely affecting curing

  • Enhances fiber wet-out and uniform resin distribution

Used in:

  • Hand lay-up and spray-up systems

  • Resin putties and repair compounds

  • Filled gel coat formulations

3. Cost Reduction & Resin Extension
  • Acts as an efficient resin extender while maintaining performance

  • Allows formulation of high-solid, economical composites

  • Improves consistency in large-volume FRP production

4. Surface Finish & Dimensional Stability
  • Enhances surface smoothness and mold replication

  • Reduces warpage, sink marks, and surface waviness

  • Improves dimensional accuracy of molded components

Particle Selection:

  • Fine powder (≤10 µm): smooth finishes, gel coats

  • Sand / fine grit: structural laminates

  • Coarse grit: abrasion-resistant surfaces

5. Anti-Slip & Wear-Resistant Applications
  • Graded silica grits provide controlled surface roughness

  • Enhances slip resistance and wear durability

Applications:

  • FRP gratings

  • Anti-skid flooring panels

  • Walkways, stair treads, and industrial platforms

6. Thermal Stability & Fire Performance Support
  • Improves heat resistance and dimensional stability at elevated temperatures

  • Acts as a non-combustible mineral filler

  • Supports fire-retardant resin formulations by reducing organic content

7. Chemical & Corrosion Resistance Enhancement
  • Silica is chemically inert and resistant to acids and solvents

  • Enhances durability of FRP components exposed to chemicals, moisture, and outdoor environments


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  • Production Capacity: 10000 Kgs
  • Delivery Time: 7 to 10 days
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Natural Pure Heavy Calcium Carbonate

Natural Pure Heavy Calcium Carbonate
  • Natural Pure Heavy Calcium Carbonate
  • Natural Pure Heavy Calcium Carbonate
  • Natural Pure Heavy Calcium Carbonate
  • Natural Pure Heavy Calcium Carbonate
  • Natural Pure Heavy Calcium Carbonate
  • Natural Pure Heavy Calcium Carbonate
  • Natural Pure Heavy Calcium Carbonate
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Approx. Price: Rs 20 / KgGet Latest Price
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Product Details:

Minimum Order Quantity100 Kg
Packaging Size50 kg
GradeIndustrial Grade
TypeGround Calcium Carbonate (GCC)
Purity/Concentration99%
Usage/ApplicationPlastic Industry
Country of OriginMade in India

🌟 CALCIUM CARBONATE HEAVY (PURE) 🌟

Premium Mineral for Industrial Performance

Applications:

✔ Rubber – improves tensile strength & durability of tyres and products

✔ Construction – enhances strength & workability in mortar & concrete

✔ Ceramics – boosts density, whiteness & surface finish

✔ Agriculture – soil conditioner & pH regulator for better crop yield

Why Choose Us?

🔹 High Purity – Consistent Quality

🔹 Excellent Dispersion & Particle Size

🔹 Reliable Supply – Competitive Pricing

📦 Available in Bulk & Custom Packaging

 

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Micron Silica Powder

Micron Silica Powder
  • Micron Silica Powder
  • Micron Silica Powder
  • Micron Silica Powder
  • Micron Silica Powder
  • Micron Silica Powder
  • Micron Silica Powder
  • Micron Silica Powder
  • Micron Silica Powder
  • Micron Silica Powder
  • Micron Silica Powder
  • Micron Silica Powder
  • Micron Silica Powder
  • Micron Silica Powder
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Approx. Price: Rs 23 / KilogramGet Latest Price
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Product Details:

SiO2 Content99.5%
Mesh Size600 Mesh
GradeFume
Packaging Size50 Kg/bag
Purity99%
Usage/ApplicationPlastics and Rubber Industry
Physical StatePowder
Pack TypeHDPE Bag
Grade StandardTechnical Grade
ColorWhite
BrandASTRRA
Country of OriginMade in India

We are the leading manufactures, technical suppliers of White Silica Fume ( Microsilica ) in Chennai, Tamil Nadu, 

Micronised Silica (Grade – 800 M), It is a highly reactive and fine-grained material consisting of amorphous silicon dioxide particles. While Micronised Silica (Grade – 800 M) finds extensive use in various construction applications, its utilization in FRP (Fiber Reinforced Polymer) and composite applications is also very effective and can enhance the performance of FRP composites.

Here are some applications and uses of Micronised Silica (Grade – 800 M) in FRP/Composite Applications:

Matrix Modification: Micronised Silica (Grade – 800 M) can be added to the polymer matrix, such as epoxy or polyester resin, to modify its properties. It improves the flowability and workability of the resin, allowing better wetting and impregnation of the fibers. This leads to improved fiber-matrix adhesion and mechanical properties of the composite.

Increased Mechanical Strength: Incorporating Micronised Silica (Grade – 800 M) into the FRP composite can enhance its mechanical strength. The Micronised Silica (Grade – 800 M) particles act as filler material, reinforcing the polymer matrix. This results in improved tensile, flexural, and compressive strength of the composite.

Reduced Shrinkage and Curing Time: Micronised Silica (Grade – 800 M) has a high surface area, which facilitates water retention in the composite matrix during curing. This helps to reduce shrinkage and prevent cracking. Additionally, Micronised Silica (Grade – 800 M) promotes the reaction between the resin and curing agents, accelerating the curing process and reducing the overall curing time.

Improved Thermal and Chemical Resistance: Micronised Silica (Grade – 800 M) enhances the thermal stability and chemical resistance of FRP composites. It acts as a barrier, reducing the permeability of the matrix to water, gases, and chemicals. This property is particularly advantageous in applications where the composite is exposed to harsh environmental conditions or corrosive substances.

Decreased Coefficient of Thermal Expansion: The addition of Micronised Silica (Grade – 800 M) to the polymer matrix can reduce the coefficient of thermal expansion of the FRP composite. This property is desirable when dimensional stability is crucial, as it helps minimize the risk of deformation or warping due to temperature variations.

It's worth noting that the use of Micronised Silica (Grade – 800 M) in FRP/Composite applications may vary depending on the specific requirements, composite system, and desired performance characteristics. Proper material selection, formulation, and testing are essential to ensure compatibility and achieve the desired results.

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  • Production Capacity: 100000
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  • Packaging Details: 50 KGS HDPE WITH FOOD GRADE INNER LINNER
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French Chalk / Putty Powder (Grade - A2)

French Chalk / Putty Powder (Grade - A2)
  • French Chalk / Putty Powder (Grade - A2)
  • French Chalk / Putty Powder (Grade - A2)
  • French Chalk / Putty Powder (Grade - A2)
  • French Chalk / Putty Powder (Grade - A2)
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Approx. Price: Rs 14.50 / KgGet Latest Price
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Product Details:

Minimum Order Quantity100 Kg
MgO Content32 %
Packaging Size50 kg
Whiteness92 %
Mesh Size300 Mesh
ApplicationPaper, Rubber, Composite, Paints, Detergent, Ceramics, Plastics
pH Value7.0
Packaging TypeBrand New PP Bags
StatePowdered
ColorWhite
Moisture< 0.5 %
FormFine Powder
Country of OriginMade in India

French Chalk, also known as Putty Powder or Talc, is a soft, white to off-white magnesium silicate mineral (Mg₃Si₄O₁₀(OH)₂), known for its smoothness, chemical inertness, and moisture resistance. Grade A2 is a refined grade, offering good whiteness, fine particle size, and consistent performance in industrial and decorative applications.

Whiteness: Typically above 85%

Oil Absorption: Moderate to high

Particle Size: Fine, micronized

Softness: 1 on Mohs hardness scale

Structure: Lamellar, platy particles

�� Uses & Applications of French Chalk / Putty Powder (Grade A2) �� 1. Paints, Primers & Putties

Acts as a filler and extender pigment in:

Wall putty

Distempers

Primers

Improves smoothness, spreadability, and opacity.

Enhances adhesion and reduces cracking in wall finishes.

Provides a matte texture and helps reduce the cost of formulations.

�� 2. Polishing Compounds & Metal Finishing

Used in metal polishing cakes and powders.

Acts as a gentle abrasive to produce a fine finish on metals.

Widely used in jewelry cleaning, automotive polishing, and hardware finishing.

�� 3. Rubber, Textile & Leather Industry

Serves as a lubricant and anti-stick agent in rubber processing.

Applied as a release agent in latex gloves and molded rubber goods.

In textiles, used for finishing and stiffening fabric.

Prevents leather surfaces from sticking or cracking.

�� 4. Construction & Building Materials

Commonly used in interior wall putty and tile adhesives.

Enhances smooth troweling, finish, and workability.

Fills micro-cracks and levels out surface imperfections before painting.

�� 5. Cosmetics & Personal Care

Used in body powders, face powders, and soaps for smooth feel and moisture absorption.

Inert and skin-safe, making it suitable for personal care use.

�� 6. Wood Finishes & Furniture Polish

Blended in wood polish pastes to enhance the sheen and feel of furniture.

Used to fill grain in open-pore woods before painting or varnishing.

⚙️ 7. Plastic & Polymer Industry

Acts as a filler and reinforcing agent in thermoplastics.

Enhances mould flow, heat resistance, and surface finish in plastic components.

Benefits of French Chalk / Putty Powder (Grade A2):

High purity and whiteness

Soft, smooth texture

Chemically inert and non-reactive

Excellent dispersion in aqueous and solvent systems

Cost-effective filler and performance improver

�� Packaging Options:

25 kg / 50 kg HDPE woven sacks

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French Chalk / Putty Powder (Grade - A1)

French Chalk / Putty Powder (Grade - A1)
  • French Chalk / Putty Powder (Grade - A1)
  • French Chalk / Putty Powder (Grade - A1)
  • French Chalk / Putty Powder (Grade - A1)
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Approx. Price: Rs 14.5 / KgGet Latest Price

Product Details:

Minimum Order Quantity100 Kg
Packaging Size50 kg
Packaging TypeBrand New PP bags
StatePowdered
ColorWhite
Country of OriginMade in India

French Chalk / Putty Powder (Grade - A1) is a natural, fine white mineral powder primarily composed of talc or similar soft minerals. It is widely used as a filler, extender, and lubricant in various industries due to its fine particle size, softness, and inertness.

Here’s a brief overview of the uses and applications of French Chalk / Putty Powder (Grade - A1):

1. Paints and Coatings
  • Purpose: Filler and extender.

  • Applications:

    • Used as a filler to improve paint opacity, smoothness, and texture.

    • Enhances paint spreadability and reduces cracking.

    • Acts as a matting agent in some coatings.

2. Rubber and Plastics
  • Purpose: Filler and processing aid.

  • Applications:

    • Incorporated into rubber and plastic compounds to improve smoothness and processability.

    • Reduces friction between processing equipment and material.

    • Improves surface finish and mechanical properties.

3. Paper Industry
  • Purpose: Filler and coating agent.

  • Applications:

    • Used as a filler to improve brightness, smoothness, and opacity in paper production.

    • Enhances printability and surface properties.

4. Cosmetics and Personal Care
  • Purpose: Absorbent and texture enhancer.

  • Applications:

    • Used in face powders, talcum powders, and other cosmetic products for smooth texture and oil absorption.

    • Provides a silky feel and reduces skin irritation.

5. Ceramics and Refractories
  • Purpose: Filler and additive.

  • Applications:

    • Used to improve workability and texture in ceramic bodies and molds.

    • Helps reduce shrinkage and cracking during firing.

6. Wall Putty and Construction
  • Purpose: Filler and texture improver.

  • Applications:

    • Incorporated into wall putty formulations to enhance smoothness and adhesion.

    • Provides a fine finish on plastered surfaces before painting.

Key Features of French Chalk / Putty Powder (Grade - A1):
  • Fine particle size and soft texture.

  • Chemically inert and stable.

  • Good lubricating properties.

  • Enhances surface finish and mechanical properties.

 

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Fumed Silica (Grade AC 200) ( Gelcoat / Thixotrophic Agent )

Fumed Silica (Grade AC 200) ( Gelcoat / Thixotrophic Agent )
  • Fumed Silica (Grade AC 200) ( Gelcoat / Thixotrophic Agent )
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Approx. Price: Rs 625 / KgGet Latest Price
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Product Details:

Minimum Order Quantity10 Kg
Purity %99%
Country of OriginMade in India

Fumed Silica – Grade AC 200 for FRP, composite, and resin systems, suitable for technical datasheets, product brochures, specifications, and customer communications.

Fumed Silica – Grade AC 200Uses & Applications in FRP / Composite / Resin SystemsProduct Overview

Fumed Silica Grade AC 200 is a highly dispersed, amorphous silicon dioxide produced via flame hydrolysis, characterized by extremely fine primary particle size, very high specific surface area (~200 m²/g), and low bulk density. These properties make AC 200 an exceptionally effective rheology control and thixotropic agent in Fiber Reinforced Plastics (FRP) and advanced composite resin formulations.

AC 200 is widely used in unsaturated polyester, vinyl ester, epoxy, polyurethane, and phenolic resin systems, particularly where anti-sag, anti-settling, and flow control are critical.

Key Functional Roles in FRP & Composite Systems1. Superior Thixotropy & Rheology Control
  • Provides strong thixotropic behavior at low dosage

  • Prevents resin sagging and dripping on vertical and overhead laminates

  • Maintains flow under shear, ensuring easy application

Ideal for:

  • Hand lay-up and spray-up FRP processes

  • Filament winding resins

  • Pultrusion resin baths

2. Anti-Sag & Anti-Drain Agent
  • Effectively prevents resin run-off from glass fiber reinforcement

  • Controls resin-rich zones and ensures uniform laminate thickness

  • Improves dimensional accuracy of molded FRP components

3. Anti-Settling & Suspension Stability
  • Keeps fillers, pigments, and additives uniformly suspended

  • Enhances storage stability of filled resin formulations

  • Prevents phase separation during processing and storage

4. Improved Fiber Wet-Out & Laminate Quality
  • Enhances resin-fiber interaction for better wet-out

  • Reduces air entrapment and void formation

  • Improves interlaminar bonding and structural integrity

5. Surface Finish & Defect Reduction
  • Minimizes pinholes, sag marks, and flow lines

  • Improves mold surface replication

  • Produces smoother, defect-free FRP surfaces

Applications:

  • Gel coats and top coats

  • Cosmetic FRP panels

  • Automotive and marine FRP parts

6. Mechanical Property Enhancement (Secondary Effect)
  • Improves interlaminar shear strength

  • Enhances resistance to crack propagation

  • Supports dimensional stability during curing

Resin System Compatibility
Resin SystemPerformance Contribution
Unsaturated Polyester Thixotropy, anti-sag, filler suspension
Vinyl Ester Flow control, chemical resistance stability
Epoxy Rheology control, crack resistance
Polyurethane Anti-settling, viscosity control
Phenolic Thermal stability, uniform filler dispersion
Typical FRP & Composite Applications
  • FRP tanks, pipes & ducts

  • Structural FRP laminates

  • Automotive FRP body panels

  • Marine hulls & components

  • Electrical insulation FRP enclosures

  • Gel coats and surface coatings


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  • Production Capacity: 10000
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Fumed Silica ( Grade - EROSIL - NV/200 XL 5M )

Fumed Silica ( Grade - EROSIL - NV/200 XL 5M )
  • Fumed Silica ( Grade - EROSIL - NV/200 XL 5M )
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Approx. Price: Rs 245 / KgGet Latest Price

Product Details:

Minimum Order Quantity10 Kg
Country of OriginMade in India
Packing10 Kgs
Purity99.5%

Fumed Silica – Erosil® NV/200 XL 5M for FRP, composite, and resin systems, suitable for technical datasheets, customer approvals, brochures, and specification documents.

Fumed Silica – Erosil® NV/200 XL 5M

Uses & Applications in FRP / Composite / Resin SystemsProduct Overview

Erosil® NV/200 XL 5M is a hydrophilic fumed silica with a very high specific surface area (~200 m²/g), manufactured through flame hydrolysis of silicon tetrachloride. The “XL” low-structure variant and 5M densified form provide improved flowability, reduced dusting, and easier incorporation while retaining strong thixotropic efficiency.

This grade is specifically suited for FRP and advanced composite resin formulations requiring precise rheology control, excellent anti-sag performance, and stable filler suspension at low addition levels.

Compatible with unsaturated polyester, vinyl ester, epoxy, polyurethane, and phenolic resin systems.

Key Functional Roles in FRP & Composite Resin Systems1. Advanced Thixotropy & Rheology Control
  • Imparts strong shear-thinning behavior to resin systems

  • Maintains viscosity at rest while allowing easy flow during processing

  • Enables controlled resin application without dripping or slump

Ideal for:

  • Hand lay-up and spray-up FRP processes

  • Filament winding

  • Pultrusion resin baths

2. Anti-Sag & Anti-Drain Performance
  • Prevents resin run-off on vertical and overhead laminates

  • Ensures uniform laminate thickness

  • Minimizes resin pooling and edge sagging

3. Suspension & Anti-Settling Agent
  • Keeps mineral fillers, pigments, flame retardants, and additives uniformly dispersed

  • Prevents phase separation during storage and processing

  • Enhances shelf stability of filled resin systems

4. Improved Fiber Wet-Out & Laminate Integrity
  • Enhances resin-fiber interface bonding

  • Reduces air entrapment and void formation

  • Improves interlaminar shear strength and laminate quality

5. Surface Finish Enhancement
  • Reduces flow lines, sag marks, and pinholes

  • Improves mold surface replication

  • Delivers smoother, defect-free FRP surfaces

Common in:

  • Gel coats

  • Top coats

  • Cosmetic FRP components

6. Processing Advantages of XL 5M Variant
  • Densified (5M) form reduces handling losses and dust generation

  • XL low-structure grade allows easier dispersion with standard mixers

  • Improved batch-to-batch consistency in production


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  • Production Capacity: 100000
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MICRO PUTTY POWDER (GRADE - 500M)

MICRO PUTTY POWDER (GRADE - 500M)
  • MICRO PUTTY POWDER (GRADE - 500M)
  • MICRO PUTTY POWDER (GRADE - 500M)
  • MICRO PUTTY POWDER (GRADE - 500M)
  • MICRO PUTTY POWDER (GRADE - 500M)
  • MICRO PUTTY POWDER (GRADE - 500M)
  • MICRO PUTTY POWDER (GRADE - 500M)
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Approx. Price: Rs 19.50 / KgGet Latest Price
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Product Details:

Minimum Order Quantity100 Kg
Packaging Size50 Kgs
BrandASTRRA BRAND
Coverage AreaTOTAL SURFACE
Usage/ApplicationConstruction
GRADE500MESH

Micro Putty Powder (Grade - 500M) is a fine-grade mineral powder used primarily as a filler and extender in various industrial and construction applications. Its fine particle size (500 mesh) allows it to provide smooth finishes and improve surface properties.
Here’s a brief overview of the uses and applications of Micro Putty Powder (Grade - 500M):
1. Paints and Coatings
Purpose: Filler and texture enhancer.
Applications:
Used as a filler to improve paint opacity, smoothness, and adhesion.
Helps control viscosity and reduce production costs by replacing more expensive raw materials.
Enhances durability and weather resistance of coatings.
2. Construction and Wall Putty
Purpose: Surface leveling and finishing.
Applications:
Used in wall putty formulations to provide a fine, smooth surface before painting.
Helps fill minor cracks and imperfections in plastered walls.
Improves adhesion and workability of putty products.
3. Plastics and Polymers
Purpose: Filler and reinforcement.
Applications:
Incorporated as a filler in plastics, rubber, and polymer composites to improve strength and reduce shrinkage.
Enhances surface finish and reduces material costs.
4. Paper Industry
Purpose: Coating and filling agent.
Applications:
Used as a filler in paper coatings to improve brightness, smoothness, and printability.
Enhances paper quality and reduces ink absorption.
5. Adhesives and Sealants
Purpose: Viscosity control and filler.
Applications:
Used to control viscosity and improve texture in adhesive formulations.
Provides bulk and enhances mechanical properties.
6. Ceramics and Refractories
Purpose: Filler and binder.
Applications:
Used in ceramic formulations to improve smoothness and reduce defects.
Helps control thermal expansion and firing behavior.
Key Features of Micro Putty Powder (Grade - 500M):
Very fine particle size (~500 mesh) ensures smooth texture.
High whiteness and chemical stability.
Enhances mechanical properties and surface finish.
Cost-effective extender and filler.

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Magnesium Aluminium Silicate

Magnesium Aluminium Silicate
  • Magnesium Aluminium Silicate
  • Magnesium Aluminium Silicate
  • Magnesium Aluminium Silicate
  • Magnesium Aluminium Silicate
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Approx. Price: Rs 19 / KgGet Latest Price
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Product Details:

Minimum Order Quantity100 Kg
Grade StandardIndustrial Grade
BrandAstrra Chemicals
FormPowder
Usage/ApplicationIndustrial
Purity95%
GradeA1
Packaging Size50 KGS
Density1,9 - 2,1 g/cm3
Packaging TypeHDPE BAGS
PH13

Uses & Applications of Magnesium Aluminium Silicate (MAS) for FRP, composites, and resin systems, suitable for datasheets, technical brochures, or customer communication.

Magnesium Aluminium Silicate (MAS)Uses & Applications in FRP / Composite / Resin SystemsOverview

Magnesium Aluminium Silicate (MAS) is a naturally occurring, highly refined phyllosilicate mineral widely used as a rheology modifier, thixotropic agent, reinforcing filler, and suspension stabilizer in Fiber Reinforced Plastics (FRP) and advanced polymer composite systems. Its plate-like particle morphology, high surface area, and controlled swelling behavior make it especially effective in thermoset resin formulations.

MAS is compatible with polyester, vinyl ester, epoxy, and phenolic resin systems, delivering improved processing stability and enhanced end-use performance.

Key Functions in FRP & Composite Systems1. Rheology Control & Thixotropy Enhancement
  • Provides controlled viscosity build-up at low shear while maintaining flow under application shear

  • Prevents resin drainage in vertical and overhead FRP laminates

  • Improves fiber wet-out and resin distribution during lay-up and molding

Applications:

  • Hand lay-up

  • Spray-up processes

  • Filament winding

  • Pultrusion

2. Anti-Sag & Anti-Settling Agent
  • Effectively prevents filler, pigment, and fiber settling in resin systems

  • Enhances storage stability of pre-filled resin formulations

  • Ensures uniform filler dispersion throughout the composite matrix

Applications:

  • Filled polyester resins

  • Mineral-loaded FRP panels

  • Thick gel coat formulations

3. Reinforcing & Mechanical Property Enhancement
  • Improves interlaminar strength and dimensional stability

  • Reduces micro-cracking and shrinkage during curing

  • Enhances impact resistance and surface durability

End Benefits:

  • Improved structural integrity

  • Reduced warpage in molded FRP components

4. Improved Surface Finish & Flow Control
  • Contributes to smooth surface finish in molded and coated FRP products

  • Reduces surface defects such as pinholes, sag lines, and resin pooling

  • Enhances mold replication accuracy

Applications:

  • FRP automotive parts

  • Marine components

  • Electrical enclosures

  • Sanitary ware composites

5. Resin Stabilization & Storage Life Improvement
  • Maintains consistent viscosity over time

  • Minimizes phase separation in resin-filler blends

  • Improves shelf life of resin master batches

Resin System Compatibility
Resin TypePerformance Contribution
Unsaturated Polyester Resins Anti-sag, filler suspension, shrinkage control
Vinyl Ester Resins Thixotropy, chemical resistance stability
Epoxy Resins Flow control, crack resistance, improved wet-out
Phenolic Resins Thermal stability, filler dispersion

 

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  • Production Capacity: 50000
  • Delivery Time: 7 DAYS
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Polyvinyl Alcohol Pva Liquid For Textile Use

Polyvinyl Alcohol Pva Liquid For Textile Use
  • Polyvinyl Alcohol Pva Liquid For Textile Use
  • Polyvinyl Alcohol Pva Liquid For Textile Use
  • Polyvinyl Alcohol Pva Liquid For Textile Use
  • Polyvinyl Alcohol Pva Liquid For Textile Use
  • Polyvinyl Alcohol Pva Liquid For Textile Use
  • Polyvinyl Alcohol Pva Liquid For Textile Use
  • Polyvinyl Alcohol Pva Liquid For Textile Use
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Approx. Price: Rs 190 / KgGet Latest Price

Product Details:

Minimum Order Quantity10 Kg
Physical StateLiquid
Grade StandardIndustrial Grade
Degree of HydrolysisFully Hydrolyze
Packaging Details1 litre Bottle
BrandAstrra Chemicals
Packaging Size25-50 kg/bag
Packaging TypeDrum
Purity %99.9%
Usage/ApplicationEmulsion Stabilizer
Country of OriginMade in India
Formula(C2H3Cl)n

PVA SOLUTION ( MOULD RELEASING AGENT ) 

We are the leading manufactures, exporters,technical developers and suppliers of PVA SOLUTION ( MOULD RELEASING AGENT ) in Chennai, Tamil Nadu, 

Polyvinyl Alcohol (PVA) Liquid – Mould Releasing Agent is a water-based, film-forming polymer solution widely used in composite molding and casting industries as a release agent. It forms a thin, flexible barrier between the mold surface and the molded part, allowing clean separation without damaging the surface or mold. PVA liquid is especially useful in fiber-reinforced plastic (FRP) and polyester/epoxy resin applications.
Uses & Applications of Polyvinyl Alcohol (PVA) Liquid – Mould Releasing Agent �� 1. FRP / Composite Molding

Used as a release film when working with polyester, vinyl ester, or epoxy resins.

Applied on molds made of metal, wood, plaster, or fiberglass to prevent sticking.

Enables smooth release of molded parts such as:

Boat hulls

Automotive panels

Bathtubs and tanks

Composite sheets and panels

�� 2. Silicone & Urethane Casting

Serves as a temporary mold barrier when casting silicone, polyurethane, or plaster.

Useful for applications involving molds with fine details or complex shapes.

�� 3. Thermoset Resin Molding

Ideal for use in closed-mold systems and compression molding where heat curing of resins is involved.

Prevents sticking and surface defects on molded thermoset parts.

�� 4. Release Agent in Latex and Rubber Processing

Used for glove molds, balloon molds, and foam casting.

Forms a non-toxic, water-soluble film that peels off after the molding process.

�� 5. Soap and Candle Molding

Acts as a barrier layer between soap/candle material and molds.

Facilitates easy release without damaging detailed mold textures.

��️ 6. Concrete & Plaster Casting

Used in decorative concrete moldings, architectural precast elements, and art casting.

Prevents bonding of concrete or plaster to reusable molds.

�� How PVA Liquid Is Used

Applied by brush, spray, or sponge to clean, sealed mold surface.

Forms a thin, flexible, water-soluble film upon drying (usually within 15–30 minutes).

Parts can be easily demolded after curing/resin setting.

Residual PVA can be washed off with warm water after demolding.

�� Key Properties of PVA Liquid (Mould Release Grade)

Water-based & eco-friendly

Non-toxic & non-flammable

Leaves no residue on final part (if properly washed)

Compatible with most thermoset resins

Film thickness: ~5–10 microns

Soluble in warm water

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  • Item Code: PVA
  • Production Capacity: 10000
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Micronized Soapstone Talc Powder ( 500M )

Micronized Soapstone Talc Powder ( 500M )
  • Micronized Soapstone Talc Powder ( 500M )
  • Micronized Soapstone Talc Powder ( 500M )
  • Micronized Soapstone Talc Powder ( 500M )
  • Micronized Soapstone Talc Powder ( 500M )
  • Micronized Soapstone Talc Powder ( 500M )
  • Micronized Soapstone Talc Powder ( 500M )
  • Micronized Soapstone Talc Powder ( 500M )
  • Micronized Soapstone Talc Powder ( 500M )
  • Micronized Soapstone Talc Powder ( 500M )
  • Micronized Soapstone Talc Powder ( 500M )
  • Micronized Soapstone Talc Powder ( 500M )
  • Micronized Soapstone Talc Powder ( 500M )
  • Micronized Soapstone Talc Powder ( 500M )
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Approx. Price: Rs 19 / KgGet Latest Price
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Product Details:

Minimum Order Quantity50 Kg
Packaging Size50 Kgs
Packaging TypeHDPE Bag
Mesh500m
ApplicationsFRP Moulding
BrandAstrra Chemicals
Usage/ApplicationIndustrial

Gained prominence with the years of experience, we are engaged in manufacturing, supplying, wholesaling and exporting quality assured Micro Talc Powder. This talc is extensively used for FRP / COMPOSITE applications. Our offered talc is processed using high quality ingredients.

Features:
  • Purity
  • Moisture resistant
  • Longer shelf life

 

Certificate of analysis:

Contents

 


Min. %

Max. %

Silica

sio2

56. 00%

58. 00%

Alumina

al2o3

-

00. 25%

Ferric oxide

fe2o3

-

00. 75%

Calcium oxide

cao

-

04. 00%

Magnesium oxide

mgo

28. 00%

30. 00%

Loss on ignition

 


07. 00%

08. 00%

Specific gravity

 


02. 95%

-

PH of 5% slurry

 


08. 00%

08. 50

 

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Fumed Silica ( Aerosil / Erosil NV/ 200 ) (A Grade)

Fumed Silica ( Aerosil / Erosil NV/ 200 ) (A Grade)
  • Fumed Silica ( Aerosil / Erosil NV/ 200 ) (A Grade)
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Approx. Price: Rs 142 / KgGet Latest Price
Product Brochure

Product Details:

Minimum Order Quantity100 Kg
Purity99.5%
Packaging Size10 kg
FormPowder
Pack Size10 kg
ApplicationFRP / Composite
Country of OriginMade in India

Fumed Silica (Aerosil / Erosil NV/200, A-Grade) It is widely used in the FRP (Fiber-Reinforced Plastic) and composite industry, particularly for improving the performance and processing of resins in advanced composite applications.

Uses & Applications of Fumed Silica (Aerosil / Erosil NV/200) in the FRP/Composite Industry �� 1. Thixotropic Agent for Resin Systems
  • Enhances viscosity of epoxy, polyester, and vinyl ester resins, allowing for better control over the flow properties.

  • Acts as a thickening agent for molding, casting, and laminating processes in FRP manufacturing.

  • Provides non-sagging, non-dripping properties to the resin, especially for vertical surfaces or intricate molds.

��️ 2. Gelcoat and Surface Coating Applications
  • Used in gelcoats to improve surface smoothness, thickness control, and scratch resistance.

  • Enhances the weathering resistance of composite parts, making them suitable for applications exposed to harsh UV conditions.

  • Helps improve surface gloss and durability, particularly in marine, automotive, and architectural coatings.

�� 3. Reinforcing Filler in Composites
  • Added to composite resins to reinforce mechanical properties, including flexural strength, impact resistance, and abrasion resistance.

  • Improves the dimensional stability of FRP parts, ensuring greater longevity and reliability in high-performance applications.

  • Often used in structural components such as panels, bumpers, boat hulls, and aerospace parts to enhance overall durability.

�� 4. Control of Resin Rheology in Infusion and RTM Systems
  • In resin transfer molding (RTM) and resin infusion systems, fumed silica NV/200 provides superior viscosity control during the resin impregnation of fibers.

  • Ensures uniform distribution of resin throughout the fiber mat, preventing issues like resin starvation or air pockets.

  • Improves wet-out and ensures that the resin penetration is consistent across all layers, particularly in thick laminates.

�� 5. Paints and Coatings for Composites
  • Used in composite coatings to achieve high thixotropy, preventing sagging or dripping on vertical and complex surfaces.

  • Helps create thicker layers of coatings that are uniform and easy to apply.

  • In high-performance coatings (such as those used in aerospace and marine applications), it improves scratch resistance, adhesion, and abrasion resistance.

�� 6. Thermal and Electrical Insulation
  • Due to its nano-particle structure, fumed silica NV/200 can improve the thermal stability of resin systems, making them suitable for high-temperature applications.

  • Often used in insulating compounds and potting materials for electrical components and electronic systems due to its dielectric properties.


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Additional Information:

  • Production Capacity: 100000
  • Delivery Time: Immediate
  • Packaging Details: Brand New PP Bags
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