Hydrophobic Fumed Silica Powder HS CODE:281122 As White and Colloidal Powder
Description
HB-151 Hydrophobic fumed silica is produced by the chemical modification of hydrophilic with reactive silanes, e.g. chlorosilanes or hexamethyldisilazane. It has water-repellent properties and is no longer dispersible in water. This hydrophobic fumed silica Powder provide superior performance benefits for many types of applications, including: Adhesives and sealants, Coating, Silicone sealants.
Feature
A, Reduced moisture adsorption
B, Anti-settling, thickening and sag resistance in polar systems
C, Scratch and abrasion resistance
D, Free-flow and anti-caking
E, Corrosion resistance
Chemical Instructions
| Property | Unit | Typical Value | Testing Method |
| Specific surface area(BET) | ㎡/g | 115±15 | GB/T20020 |
| PH Value in 4% dispersion | | 3.7-4.5 | GB/T20020 |
| Loss on dying(2h@105C) | Wt% | ≤0.5 | GB/T20020 |
| Loss on ignition(2h@1000C,based on material dried for 2h@105C) | Wt% | ≤2.5 | GB/T20020 |
| Silica content(Based on ignited material) | Wt% | ≥99.8 | GB/T20020 |
| Tamped density(Based on material dried for 2h@105C) | g/L | 40-60 | GB/T20020 |
| Carbon content(Based on material dried for 2h@105C) | g/L | 0.6-1.2 | GB/T20020 |
Applications:
1, Coatings.
2, Cosmetic, Skin and beauty care products.
3, Adhesives and Sealants.
4, Silicone Sealants.
5, Compasites and Toners.
