Weather resistant matte silicone coating special for emas and preparation method thereof

A weather resistant matte silicone coating special for EMAS, comprising:

• 80˜130 parts by weight, preferably 90˜120 parts by weight, and more preferably 95˜115 parts by weight of α,ω˜dihydroxypolydimethylsiloxane;
• 0.5˜10 parts by weight, preferably 0.8˜7 parts by weight, and more preferably 1˜3 parts by weight of linear polydimethylsiloxane with terminal hydroxyl group;
• 1˜10 parts by weight, preferably 2˜7 parts by weight, and more preferably 3˜5 parts by weight of fumed silica;
• 10˜50 parts by weight, preferably 13˜40 parts by weight, and more preferably 15˜30 parts by weight of precipitated silica;
• 1˜5 parts by weight, and preferably 1.5˜2.5 parts by weight of color masterbatch;
• 0.9˜5 parts by weight, and preferably 1˜3 parts by weight of organotin chelate catalyst;
• crosslinking agent, comprising 1.5˜7 parts by weight, preferably 2˜6 parts by weight, preferably 3˜5 parts by weight of methyltri(methylethylketoximino)silane, 1.5˜7 parts by weight, preferably 2˜6 parts by weight, preferably 3˜5 parts by weight of vinyltri(methylethylketoximino)silane, and
• 1˜7 parts by weight, preferably 2˜6 parts by weight, and preferably 3˜5 parts by weight of aminopropyltriethoxysilane;
• 1.5˜6 parts by weight, and preferably 2˜4 parts by weight of delustering agent;
• and
• 250˜350 parts by weight, and preferably 280˜320 parts by weight of solvent.