Silane-Coupling Surface Modification for Maximum Resin Compatibility and Dispersion
Surface-Modified Silica Powder is a functional filler in which epoxy-silane coupling agent is chemically bonded to the SiO₂ surface, dramatically improving resin compatibility, dispersion and interfacial adhesion. Based on active crystalline silica and active fused silica, with standard models SN-HJG and SN-HRG as the baseline, grades matching particle size, purity and other requirements are supplied to meet customer needs — optimized for semiconductor EMC/underfill and epoxy, phenolic, silicone and acrylic resin matrices.
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 |
|---|---|
| Appearance | White surface-modified powder |
| SiO₂ Purity | ≥ 99.5 % |
| Surface Treatment | Silane coupling (epoxy/amino/vinyl, etc.) |
| Carbon Content | 0.3–1.5 % (adjustable) |
| Mean D50 | 1–30 µm (customizable) |
| Moisture | ≤ 0.3 % |
| Packaging | 20 kg bag · OEM |
| Country of Origin | China |
Product Lineup
- SN-HJG · SN-HJG · Surface-Modified Crystalline Silica Powder — Surface-Modified Crystalline (Active Crystalline)
- SN-HRG · SN-HRG · Surface-Modified Fused Silica Powder — Surface-Modified Fused (Active Fused)
- SN-DRG07 · SN-DRG07 · Surface-Modified Silica Powder — Standard Grade (Epoxy-Silane Treated)
- SN-DRG07-A · SN-DRG07-A · Surface-Modified Silica Powder — High-Purity Grade (Epoxy-Silane Treated)
Main Applications
Epoxy Composites · Silicone Sealants · High-Performance Adhesives · Coatings & Inks
Particle size, purity, surface treatment and packaging can be customized to your specification. Contact us for samples, TDS and quotations.