Silicone paint dedicated to grazing type weather resistant EMAS and its preparation method

摘要

A weather resistant matte silicone coating special for EMAS, comprising: 80ˆ¼130 parts by weight of ±-É-dihydroxypolydimethylsiloxane; 0.5ˆ¼10 parts by weight of a linear polydimethylsiloxane with terminal hydroxyl group; 1ˆ¼10 parts by weight of fumed silica; 10ˆ¼50 parts by weight of precipitated silica; 1ˆ¼5 parts by weight of color masterbatch; 0.9ˆ¼5 parts by weight of organotin chelate catalyst; crosslinking agent, comprising 1.5ˆ¼7 parts by weight of methyltri(methylethylketoximino)silane, 1.5ˆ¼7 parts by weight of vinyltri(methylethylketoximino)silane, and 1ˆ¼7 parts by weight of aminopropyltriethoxysilane; 1.5ˆ¼6 parts by weight of delustering agent; and 250ˆ¼350 parts by weight of a solvent. The coating has the properties of low viscosity, high flow, relatively fast curing, moderate strength, good adhesion, good mattness, being environmentally friendly and the like.