Product Overview
High Whiteness Crystalline Silica Micro Powder is a high-purity, ultra-fine powder material, refined from premium natural quartz through specialized processes. It features high purity (≥99%), excellent whiteness, uniform particle size distribution (adjustable D50 0.5μm-25μm), and strong chemical stability. Widely used in electronic encapsulation, coatings, ceramics, rubber, plastics, adhesives, and other fields, it significantly enhances mechanical properties, insulation, and weather resistance.
Product Specifications
| Parameter | Specification |
| Chemical Purity (SiO2) | ≥99% |
| Whiteness | ≥92% |
| Particle Size (D50) | 0.5μm-25μm (customizable) |
| Moisture | ≤0.5% |
| Loss on Ignition | ≤0.5% |
| Density | 2.65 g/cm³ |
| Mohs Hardness | 7 |
| Crystal Form | Crystalline |
| Item | Unit | Typical Values |
| Exterior | / | white powder |
| Density | kg/m³ | 2.65 ×103 |
| Moh's hardness | / | 7 |
| Coefficient of linear expansion | 1/k | 14×10-6 |
| Pyroconductivity | w/k.m | 12.6 |
| Refraction coefficient | / | 1.54 |
Key Features
High Purity: SiO2 content ≥99%, with extremely low impurities, ensuring stable performance in high-end applications.
Adjustable Fineness: D50 particle size adjustable from 0.5μm to 25μm, meeting precise requirements across industries.
Superior Whiteness: Whiteness ≥92%, ideal for high-end coatings, plastics, and other color-sensitive applications.
Chemical Inertness: Resistant to acids, alkalis, and oxidation, with excellent insulation properties, suitable for electronic encapsulation and high-temperature environments.
Performance Enhancement: As a functional filler, it improves material strength, wear resistance, and weather resistance.
Applications
Electronics: IC packaging, epoxy resin potting compounds, copper-clad laminates, enhancing insulation and thermal conductivity.
Coatings: High-end paints, anti-corrosion coatings, powder coatings, improving scratch resistance and dispersibility.
Ceramics: Precision ceramics, glazes, increasing sintering density and surface smoothness.
Rubber/Plastics: Reinforcing filler to enhance tensile strength, heat resistance, and dimensional stability.
Adhesives: Improves bonding strength and aging resistance.
Packaging & Storage
Packaging: 25 kg/bag (plastic-lined woven bag) or customized per customer requirements.
Storage: Store in a cool, dry place; protect from moisture, damage, and contact with strong acids/alkalis.
Why Choose Us?
Strict QC: Batch testing ensures compliance with particle size, purity, and whiteness standards.
Technical Support: Customized application solutions and expert consultation.
Flexible Supply: Tailored particle size and packaging options with fast delivery.
Contact us today! As a certified premium supplier on Made-in-China.com, we provide cost-effective silica micro powder solutions!
