Fumed silica, molecular formula: SiO2. White fluffy powder, porous, non-toxic, tasteless and pollution-free, high temperature resistance. At the same time, its chemical inertness and special thixotropic properties can obviously improve the tensile strength, tear resistance and wear resistance of rubber products, and the strength of rubber is improved by dozens of times.
Rheology and thixotropy control of liquid systems, adhesives, polymers, etc., used as anti-settling, thickening, anti-sag additives, reinforcement of HCR and RTV-2K silicone rubber, can be used to adjust free flow And as an anti-caking agent to improve powder properties, etc.
The domestic and foreign brands of fumed silica are domestic: hydrophilic
hydrophobicity
Other domestic hydrophilic:
Import: Germany WACKER: Hydrophilic: V15, V15P, N20, N20P, T30, T40
US Cabot (CABOT): Hydrophilic: LM-150, M-5, EH-5
Japan Tokuyama (TOKUYAMA): Hydrophilic: QS-102, QS-20LS, QS-30, QS-40
Note: The functional characteristics of domestic and imported brands are basically the same.