Active Crystalline Silica · Silane-Coupling Surface Modification · D50 1–30 µm
SN-HJG series Active Crystalline Silica Powder is a surface-modified (active) filler in which a silane coupling agent is chemically bonded to the surface of crystalline SiO₂ — fundamentally improving interfacial compatibility, dispersion and adhesion with organic resins and polymer matrices. Coupling-agent type and loading are adjusted per the customer's formulation. Together with low Na⁺/Cl⁻/EC control and uniform ultra-fine particle size, it delivers stable processability and reliability across semiconductor, electronics and precision ceramics.
Key properties: SiO₂ 98.0–99.9%, whiteness 90 min, Mohs 7, PH 5–8, D50 1–30 µm (customizable). Effectively improves the compatibility of silica with organic polymer materials, improves the performance uniformity of downstream products, increases filling volume, reduces cost and improves mechanical/electrical performance.
Key Features
- 🧬 Silane Coupling Surface Modification — Custom modification with epoxy, amino, vinyl, methacryl and more
- 🔗 Strong Interfacial Adhesion — Enhanced resin-filler bonding improves mechanical properties
- 🌊 Excellent Dispersibility — Minimized agglomeration and uniform dispersion improve processability
- 💧 Water/Humidity Resistance — Hydrolysis suppression ensures long-term reliability
- 🔧 Dual Grade — Crystalline SN-HJG and fused SN-HRG
- ⚙️ Custom Spec — Custom coupling agent type, loading and PSD
Technical Specifications
| Item | Value |
|---|---|
| Code | SN-HJG |
| Type | Active Crystalline |
| Appearance | White powder |
| SiO₂ | 98.0 ~ 99.9 % |
| Whiteness | 90 Min |
| Mohs Hardness | 7 |
| PH | 5 ~ 8 |
| D50 (Mean PSD) | 1–30 µm (customizable) |
| Surface Treatment | Silane coupling (adjusted per customer formula) |
| Features | Low Na⁺/Cl⁻/E/C, excellent resin compatibility and dispersion |
| Country of Origin | China |
Parent Category: Surface-Modified Silica Powder
Particle size, purity, surface treatment and packaging can be customized to your specification. Contact us for samples, TDS and quotations.