Wollastonite – Functional Reinforcing Mineral
Used in Ceramics, Plastics, Paints & Friction Products
High Performance Wollastonite for Industrial Formulations
Wollastonite is a naturally occurring calcium silicate mineral known for its reinforcing properties and heat resistance. Its needle-like crystal structure improves mechanical strength in industrial products.
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Versatility Across Industries
| Industry | Primary Use | Key Benefit |
|---|---|---|
| Plastics & Polymers | Reinforcing Filler | Increases flexural and tensile strength; improves heat deflection temperature (HDT). |
| Paints & Coatings | Anti-Corrosive Pigment | Improves “mud-cracking” resistance and enhances the durability of exterior coatings. |
| Ceramics | Fluxing Agent | Reduces firing shrinkage and prevents “crazing” in glazes; improves fired strength. |
| Construction | Asbestos Substitute | Provides safe, high-strength reinforcement in fire-resistant boards and cement products. |
| Metallurgy | Casting Flux | Protects the surface of molten steel and helps in the removal of impurities. |
Pro Tip: For Automotive Plastic Parts, using our High Aspect Ratio (HAR) Wollastonite allows for “thin-wall” molding. This reduces the weight of the part without losing stiffness, a critical requirement for modern electric vehicle (EV) manufacturing.
Applications
Why Choose Asteroid Microns Wollastonite?
- Preserved Needle Structure: We avoid traditional ball milling which can crush the mineral into dust. Instead, we use proprietary “delaminating” techniques to keep the acicular structure intact.
- Exceptional Purity: Our Wollastonite is characterized by very low iron (Fe2O3) and alumina (Al2O3) content, ensuring consistent chemical behavior.
- Cost-Effective Alternative: In many plastic applications, our Wollastonite can replace more expensive shortglass fibers while providing smoother surface finishes.
- Thermal Insulation: Its natural structure makes it an excellent choice for fire-resistant and thermal-insulating building materials.
Our Core Varieties
- High Aspect Ratio (HAR) Wollastonite: Specially processed to keep the “needles” long. Essential for highperformance automotive plastics and reinforcement.
- Micronized Wollastonite: Fine-ground grades (up to 10 microns) designed for high-gloss paints and precision ceramic glazes.
- Surface-Treated Wollastonite: Coated with silanes or other coupling agents to ensure perfect bonding with polymer resins and rubber.