Leveraging advanced thermo-mechanical properties, Wacker HDK V15 is a hydrophilic fumed silica with 14nm primary particles and 130-170 m²/g surface area. Its high-purity amorphous structure (≥99.8% SiO₂) and surface silanol groups (2 SiOH/nm²) deliver exceptional thickening, thixotropy, and reinforcement, widely used in silicone rubber, coatings, and adhesives with pH 3.8-4.3
Thickening Power: Achieves 3000-4200 mPa·s viscosity in unsaturated polyester resins, 50% higher thixotropic index
Broad Compatibility: Stable in water/solvent systems with epoxy/acrylic resins, no bleeding
Reinforcement: 5-10% dosage in silicones increases tear strength by 60%, maintaining >90% transparency
Thermal Stability: Withstands 1000℃ (<2% ignition loss), no caking after 90 days at 50℃
Eco-Safe: FDA 21 CFR 175.300 compliant, heavy metal-free, >70% biodegradability
Silicone Rubber: Filler for HTV/RTV silicones, enhancing mechanical/dielectric properties
Industrial Coatings: Anti-sagging in epoxy floors, >1000h salt spray resistance
Printing Inks: Improves pigment dispersion, +20% print clarity
Adhesives: Thickening/thixotropy in sealants, +30% shear strength
Batteries: Stabilizer for gel electrolytes, doubles service life
Chemical Type | Hydrophilic fumed silica |
Appearance | Fluffy white powder |
Surface Area (BET) | 130-170 m²/g |
Primary Particle Size | 14 nm |
SiO2 Content | ≥99.8% |
pH (4% aqueous) | 3.8-4.3 |
Ignition Loss (1000℃) | <2% |
Bulk Density | ~50 g/L |
Moisture Content | <1.5% |
Packaging | 10kg/moisture-proof paper bag |
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China