Preparation Method of a Fast Curing Eco-friendly Acid Silicone Sealant
A type of eco-friendly acid silicone sealant is prepared using polymethyl siloxane prepolymer as the base polymer,white carbon black as the filler,methyl triacetoxysilane and vinyl triacetoxysilane as the crosslinking agent,di-tert-butoxy diacetoxysilane as the silane coupling agent,and self-made titanate as the catalyst.This sealant has a significant fast curing effect,and the surface drying time can be controlled within 10 minutes;while the thickness of the coating layer is 2 mm,the curing strength after 8 hours can reach 0.72 MPa,and the fully cured strength can reach 0.75 MPa.
万方数据
维普
