Hydrophobic Fumed Silica HB-135
HB-135 is hydrophobic fumed silica which is produced by HL-380 after chemical post-treatment with HMDS (Hexamethyldisilazane).
Adhesives and Sealants
Low thickening effect and excellent processability enable high loading in polymers
Excellent reinforcing properties in silicone rubber especially at high filler loading levels(RTV-1,RTV-2,LSR)
Good transparency performance
Free-flow aid for powders
Physical & Chemical Data
|Properties||Unit||Typical Value||Testing Method|
|pH value in 4% dispersion （H2O：Ethanol=1:1）||-||7.0～8.5||GB/T 20020|
|Loss on drying(2 hours at 105℃)||%||≤0.5||GB/T 20020|
|Loss on ignition(2 hours at 1000℃ based on material dried for 2 hours at 105℃)||%||≤8.0||GB/T 20020|
|Silica Content(Based on ignited material)||%||≥99.8||GB/T 20020|
|Tamped Density（Based on material dried at 105℃ for 2 hours）||g/dm³||40～60||GB/T 20020|
|Carbon Content (Based on material dried at 105℃ for 2 hours)||%||3.5～6.5||GB/T 20020|
Hubei Huifu Nanomaterial Co.,Ltd. is an National High-tech Enterprise specialized in fumed silica, a nano powder material.