Hydrophobic fumed silica is produced by treating hydrophilic grade fumed silica with silane or siloxane. It has the characteristics of low hygroscopicity, good dispersibility, and rheological adjustment ability even for polar systems. It is widely used in electronic packaging materials, coatings, adhesives, inks, plastics, cosmetics and other fields. The specific uses are as follows:

- Electronic packaging materials: Hydrophobic fumed silica can be used in packaging materials to improve the performance and reliability of packaging materials.
- Coatings and paints: It can be used as a rheological control agent to prevent the precipitation and stratification of coatings and paints during storage and construction, and can also improve the scratch resistance and weather resistance of coatings and paints.
- Adhesives and sealants: In adhesives and sealants, hydrophobic fumed silica can improve its viscosity and thixotropy, enhance its bonding strength and sealing performance.
- Ink: As a rheological control agent, it can prevent the precipitation and stratification of inks during storage and printing, and can also improve the printing quality and weather resistance of inks.
-Plastics: Adding hydrophobic fumed silica to plastics can improve their strength, hardness and wear resistance, while also improving their surface properties and processing properties.
-Cosmetics: It can be used as a filler and rheology control agent in cosmetics to improve the texture and stability of cosmetics.

1. Fumed silica 150 treated with DDS
Equivalent to WACKER H15/AEROSIL R972/CABOT TS610
2. Fumed silica 200 treated with DDS
Equivalent to WACKER H20/AEROSIL R974
3. Fumed silica 380 treated with HMDS
Equivalent to AEROSIL R812/CABOT TS530
3. Fumed silica 200 treated with PDMS
Equivalent to AEROSIL R202/CABOT TS720