Key Selling Points
Ultra-High Purity: SiO2 ≥99%, extremely low iron content (test reports available), significantly enhances end-product performance.
Precise Particle Size Control: Adjustable D50 0.5-25μm, customizable grading for specialized applications.
Stable Crystalline Structure: High hardness, low thermal expansion, excellent heat and corrosion resistance.
Eco-Friendly Production: Pollution-free manufacturing, compliant with RoHS/REACH standards.
Technical Specifications
| Parameter | Value/Description |
| Chemical Purity | SiO2 ≥99%, Fe2 O3 ≤0.01% (default, lower available upon request) |
| Particle Size | D50 0.5-25μm (D97, D10 customization supported) |
| Whiteness | ≥92% (adjustable) |
| Moisture | ≤0.5% |
| Mohs Hardness | 7 |
| Dielectric Constant | 3.8-4.2 (at 1MHz) |
| 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 |
Applications
Advanced Electronics: IC packaging, PCB substrates, electronic ceramics.
Solar Industry: PV cell passivation layers, silicon wafer cutting aids.
Specialty Coatings: Weather-resistant coatings, aerospace thermal barrier coatings.
Precision Ceramics: Structural ceramics, refractory material reinforcement.
Polymer Composites: Silicone rubber, epoxy resin modifiers.
Quality Assurance
Dual Testing: Laser particle analyzer (Malvern/Bettersize) + XRF composition analysis.
Batch Traceability: Unique QC ID for each batch, third-party inspection accepted.
Customization: Tailored pH, surface area, and other parameters upon request.
Packaging & Shipping
Standard Packaging: 25kg/bag (moisture-proof aluminum foil bag).
Logistics Options: Sea/air freight supported, EXW/FOB terms available.
Why Choose Us?
Direct Manufacturer: Integrated production from quartz mines to finished powder, cost-effective pricing.
R&D Expertise: 10+ years in silica powder R&D, offering formula optimization support.
Rapid Response: Technical proposals within 48 hours, small trial orders accepted.
FAQ
Q: What is the MOQ?
A: Standard specifications: 1 ton. New clients can request 100kg samples.
Q: Do you offer non-standard particle size customization?
A: Yes, jet milling/classification available (minimum D50 0.5μm, subject to evaluation).
Contact Us: Click to inquire now for exclusive quotes and technical whitepapers!
