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Product application in the industry
ADHESIVES & SEALANTS
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- Time of issue:2020-01-02 13:32
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(Summary description)Our performance additives are used in many chemistries including epoxies, polyurethane,acrylate.
ADHESIVES & SEALANTS
(Summary description)Our performance additives are used in many chemistries including epoxies, polyurethane,acrylate.
- Categories:Application
- Author:
- Origin:
- Time of issue:2020-01-02 13:32
- Views:
Information
Our performance additives are used in many chemistries including epoxies, polyurethane,acrylate.
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 curing process.
Ultra-fine precipitated silica by special treatment,with strong adsorption and good dispersion .It is mainly used as absorption,anti-setting and thickening agent in adhesives .etc.
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