Adhesives & Sealants
In sealants and adhesives, fumed silica plays a major role in rheological control and viscosity strength.
When fumed silica is added and dispersed in adhesives and sealants, a silica agglomerates network is formed, agglomerates react with SI-OH and result in hydrogen bonds, thus flowing property is restricted and viscosity increased, thickening property promoted; but, when shear thinning is applied, hydrogen bonds and silica network breaks, viscosity decreases, this allows adhesives and sealants to be applied smoothly; when shear thinning is removed, network restored, viscosity increases, this prevents adhesives and sealants from sagging during the curing process.
Our main products are fumed silica SiO2, fumed titanium dioxide TiO2, and fumed alumina Al2O3. We get 20+ years of expertise and 12,000 tons of annual capacity. We supply total of 23 grades of hydrophilic & hydrophobic fumed silica. We get registration of REACH and pre-registration of K-REACH & KKDIK. We are the leading setting body of ISO18473-1:2015, ISO18473-3:2018, and ISO 23157:2021. Learn More About Hifull