HJSIL® R110 is a kind of hydrophobic fumed silica, treated with poly-dimethylsiloxane. It’s high purity white colloidal powder.
 
Thickening and thixotropy of complex polar liquids, for example epoxy, polyurethane or vinyl ester resins.
Thickening and thixotropy of cable gels for fiber optic cables.
Anti-settling agent for heavy fillers.

HJSIL® R272 is a kind of hydrophobic fumed silica, treated with DDS (dimethyldichlorosilane). HJSIL® R272 hydrophobic fumed silica is suitable for the following applications as the additive: RTV silicone rubber, RTV-1 and RTV-2 Sealants and Adhesives, Paints and Coatings, Printing inks and toners, Powder Coatings, Cable compounds gels and more.

Specific surface area (BET)：110 ± 20m²/g
Silica content: ≥ 99.8
Carbon content: 0.6 ~ 1.2
Appearance: lightweight, fluffy white powder
Lead Time: 10 days

HJSIL® R274 is a kind of hydrophobic fumed silica, treated with DDS (Dimethyldichloro-silane). It’s high purity white colloidal powder. Reinforcement in elastomer, can effective prevent from structurization and prolong the shelf-life of RTV silicone sealants
High hydrophobicity and stable thixotropy, using in coating and ink can prevent from anti-caking, anti-sagging and anti-thixotrophy
High hydrophobicity and rheology in adhesives and sealants
Improve the homoeneity and stability of pigment
Improve the free flow of power coating and anti-caking

HJSIL® R620 is a kind of hydrophobic fumed silica, treated with HMDS (hexamethyldisilazane). It’s high purity white colloidal powder.
 
Reinforcement of HTV silicone rubber, anti-caking
High hydrophobicity and stable thixotropy, using in coating and ink can prevent from anti-caking, anti-sagging and anti-thixoteopy
Good performance of hydrophobic feature and rheology in adhesives and sealants
Improvement of the free flow of powder coating and anti-caking

HJSIL® R622 is a kind of hydrophobic fumed silica, treated with HMDS (hexamethyldisilazane). It’s high purity white colloidal powder.
 
Reinforcement of HTV silicone rubber, anti-caking
High hydrophobicity and stable thixotropy, using in coating and ink can prevent from anti-caking, anti-sagging and anti-thixoteopy
Good performance of hydrophobic feature and rheology in adhesives and sealants
Improvement of the free flow of powder coating and anti-caking