De-acetate-based single-component RTV silicone rub...

De- acetate -based single-component RTV silicone rubber is one of the varieties of one-component RTV silicone rubber earliest development , is currently selling more varieties on the market , mainly for the construction and automotive industries sealants and adhesives for general industrial use . It has very good physical properties, and curing properties of the adhesive , the drawback is that the curing process to release acid, an acid smell, and corrosive to metal , the scope of its application subject to certain restrictions . 　　Off the crude acid single -component RTV silicone rubber cross-linking agent most commonly used is methyl triacetoxy silane. Methyl triacetoxysilane due to the melting point of only 41.4 ° C, causing not only inconvenient , but also formulated compound in storage tend to have crystallized , affecting the curing speed sealant used under different environmental temperature. The industrial production generally with ethyl triacetoxy silane mixture , or a partial hydrolyzate after use , at a low temperature to avoid precipitation of crystals from the rubber compound to improve the curing properties of rubber . Using methyl tris (2 - ethylhexyl acyloxy ) silane or methyl tris ( benzoyloxy ) silane as the crosslinking agent , the compound can reduce the corrosion of metallic materials , and to reduce acid smell . 　　Preparation of single -component de- acetate RTV silicone rubber, filler choice is very important. If glazing structures with the requirements of the appearance of light-colored transparent high modulus sealant can only use fumed silica as a filler . Adhesive sealant or other fillers in addition to fumed silica , but also according to modulus, physical properties, electrical properties , liquidity requirements , the choice of non-reactive with the acid without the appearance of transparency requirements, such as precipitated carbon black, quartz powder , carbon black , titanium dioxide , iron oxide, diatomaceous earth, alumina , diatomaceous calcium , talc, etc. ; but water filler particle size should be strictly controlled , usually requiring less than 0.2% moisture , particle size less than 5um. 　　Datas are from Shenzhen Hong Ye Jie Technology Co., Ltd., if you want forward, please indicate it. Hong Ye silicone, quality and quantity guarantee, we welcome new and old customers and dealers to discuss business, the company official website: http://www.szrl.net contact number :400-779-4008, you can also send us an email info@szrl.net.