Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

WACKER Hydrophilic Fumed Silica HDK T30

WACKER HDK T30 is a hydrophilic fumed silica (270-330 m²/g BET) for coatings and silicones, providing superior thickening and thixotropy in water-based systems. It enhances HTV rubber reinforcement and maintains clarity in unsaturated polyesters, ideal for industrial formulations

Features Of WACKER Hydrophilic Fumed Silica HDK T30

  1. Surface Area: 270-330 m²/g (DIN ISO 9277) for precise rheology control

  2. Transparency: <1% haze in resin systems

  3. Reinforcement: Increases HTV silicone tensile strength by 30%

  4. pH Stability: 3.8-4.3 in 4% aqueous dispersion (DIN EN ISO 787-9)

  5. Low Moisture: <1.5% water content (105°C)

Typical Applications Of WACKER Hydrophilic Fumed Silica HDK T30

  1. Industrial Coatings: Anti-settling agent for epoxy/polyurethane paints

  2. Silicone Rubber: Filler for HTV/LSR rubber

  3. Adhesives: Thixotropy modifier in PVC hot melts

  4. Inks: Rheology adjuster for printing inks

Specifications Of  WACKER Hydrophilic Fumed Silica HDK T30

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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