Silica Siwin-BQS152
Hydrophobic fumed silica
Characteristics
Type HB-152 is a hydrophobic silica treated by DDS (dimethyldichlorosilane) of QS-200（200m2/g）
Applications
RTV silicone rubber, especially RTV-T.
Adhesives & Sealants.
Coatings, Printing ink.
Powder Coating.
Properties
Higher hydrohpobicity, thixotropy, thickening, transparency and reinforcement.
Anti-settling and anti-sagging agent.
Rheology control in adhesives.
Free flow aid and anti-caking aid for powders.
Thixotropy and reinforcement in RTV silicone sealants, the hydrophobic feature gives RTV silicone sealants a long shelf-life
Physical & Chemical Data
Properties | Unit | Standard Value | Testing Method |
pH in 4% dispersion (H2O: Ethanol=1:1) | 3.7-4.5 | GB/T 20020 | |
Loss on drying (2 hour at 105°C) | % | ≤0.7 | GB/T 20020 |
Loss on ignition (2 hour at 1000°based on material dried for 2 hours at 105°C) | % | ≤2.5 | GB/T 20020 |
Silica content (based on ignited material) | % | ≥99.8 | GB/T 20020 |
Tamped density (based on material dried for 2 hours at 105°C) | g/dm2 | 40-60 | GB/T 20020 |
Carbon content (based on material dried for 2 hours at 105°C) | % | 0.8-1.6 | GB/T 20020 |
Packing
10kg/bag kraft paper.
12 month shelf life.
Rm 203, 2nd Floor, Unit 9, Xingzhihui, Xinghuo Rd 19th,Jiangbei New District, Nanjing, (210000), Jiangsu, China.
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