CH₂=CHSi(OCH₂CH₃)₃

Introduction

HD-20 silane, vinyltriethoxysilane, is a vinyl-functional silane that may be used to improve the bond between glass fiber or mineral fillers and resins that are reactive towards the vinyl group. It is also employed to functionalize resins via free radical mechanisms – copolymerization or grafting – and to modify surfaces.

Typical Physical Properties

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           Chemical Name             Vinyltriethoxysilane  

           Formula                   C₈H₁₈O₃Si

           Molecular Weight            190.4

           Color and Appearance        Colorless transparent liquid

           Density_25/25℃                0.9040-0.9080

           Boiling Point                160℃ 【760mmHg】

           Refractive Index             1.3965+/-0.0005 【25℃】

           Viscosity _25℃                0.7 cSt

           Flash Point                 44℃

           CAS No.                   78-08-0

           EINECS No.                201-081-7

           Purity                     Min 95.0%

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Applications

●        Coupling agent in filled polymer systems, which cure via a free radical mechanism.

●        Finish for glass or a binder additive in glass-reinforced polyester resins.

●        Integral additive in mineral-filled polyester or DAP resin compounds.

●        Additive to mineral-filled elastomers which are peroxide vulcanized.