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

Evonik Fumed Silica Nano-White Carbon Black Hydrophobic

Evonik fumed silica nano-white carbon black hydrophobic type combines hydrophilic and organosilane-modified variants to deliver precision rheological control across industrial systems. Hydrophilic grades leverage nano-scale architecture (BET 100-380 m²/g) for dust suppression and shear-thinning behavior in polar matrices like epoxy resins and waterborne coatings, while hydrophobic counterparts modified with siloxane derivatives optimize moisture resistance in silicone elastomers and solvent-based formulations.

Surface-tailored particles form reversible 3D networks that stabilize pigments in vertical paints and prevent filler sedimentation in adhesives, balancing viscosity recovery with processability.

The series enhances mechanical reinforcement in HTV rubbers through hydrogen bonding, achieving tensile strength improvements without compromising optical clarity.


  • evonik-hydrophobic
  • evonik-hydrophobic

Features Of Evonik Fumed Silica Nano-White Carbon Black Hydrophobic

  1. Surface Modification: Hydrophobic treatment (e.g., HMDS or octyl silane) enhances water resistance and reduces moisture absorption

  2. Rheology Control: Stabilizes viscosity, prevents sedimentation, and provides thixotropic behavior in liquid systems (e.g., coatings, adhesives)

  3. Reinforcement: Improves mechanical strength in rubber, plastics, and composites while maintaining transparency in polymer matrices

  4. Flow Optimization: Acts as an anti-caking and flow aid in powder coatings and toner formulations

  5. Dispersion Stability: Ensures uniform pigment distribution and anti-sagging in paints/inks

Typical Applications of Evonik Fumed Silica Nano-White Carbon Black Hydrophobic

  1. Coatings & Inks: Enhances anti-corrosion, anti-settling, and sag resistance in epoxy/polyurethane systems

  2. Adhesives & Sealants: Improves thixotropy, extrusion efficiency, and moisture stability in silicones/polyurethanes

  3. Silicone Rubber: Reinforces HTV/LSR products with balanced optical/mechanical properties

  4. Cosmetics/Pharmaceuticals: Serves as a matting agent, viscosity modifier, or carrier in creams/powders

Specifications Of Evonik Fumed Silica Nano-White Carbon Black Hydrophobic


ModelAppearanceBET Surface Area (m²/g)Bulk Density (g/L)Loss on Drying (wt%)Loss on Ignition (wt%)
Evonik R974Fluffy white powder170±2050≤0.5≤2
Evonik R972White powder270±20~50≤0.5≤2
Evonik R812White powder20±20~50≤1≤2
Evonik R805White powder190±20~50≤1≤2
Evonik A300White powder300±30~50≤1.5≤2.0
Evonik A200/////


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