WACKER HDK V15D is a hydrophilic fumed silica (400±40m²/g) for water-based systems. It delivers superior thickening and thixotropy while maintaining transparency in HTV silicones and unsaturated polyesters, ideal for coatings and adhesives.
High Surface Area: 400±40 m²/g BET for optimal rheology control
Transparency: Maintains clarity in resin systems (<1% haze)
Silicone Reinforcement: Boosts HTV rubber tensile strength by 35%
Water Compatibility: Stable in aqueous formulations (pH 3.5-4.5)
Thermal Resistance: Performs up to 250°C in cured systems
Architectural Coatings: Thixotrope for low-VOC waterborne paints
Silicone Products: Reinforcing filler for HTV/LSR rubber
Composite Resins: Anti-sag agent in UP resin gel coats
Adhesives: Viscosity stabilizer for PVC hot melts
BET Surface Area | 400±40 m²/g |
pH Value | 3.8 - 4.3 |
Appearance | Fluffy white powder |
Color | Transparent |
Amorphous | SiO₂ crystalline structure |
SiO₂ Silicon Content | 99.8% |
Refractive Index | 1.46 Hydrophilic |
Tapped Density | 50g/l |
Silane Alcohol Density | 2SiOH/nm² |
Resistance at a density of 50 - 60g | >10¹³ |
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E-mail: wangxingqiang@ericwchem.com
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