Preparation And Modification Of Dealcoholized RTV Silicone Rubber

Single component room temperature vulcanized silicone rubber is a one componentmoisture curing silicone adhesives, due to its excellent resistance to high insulationresistance, Wen Henai media in various industries are widely used, aging properties.Dealcoholized RTV silicone rubber is a kind of one component room temperaturevulcanized silicone rubber, due to its non corrosive, low odor, fast curing characteristics,compared with other kinds of silica gel has better prospects for development.In this paper, the preparation of dealcoholized RTV silicone rubber titanium catalystand alkoxy terminated poly two methyl siloxane, and the preparation process wasdiscussed. The base res. The base resin with business different crosslinking systems toprepare alcohol RTV silicone rubber off different systems to107silicone rubber. Anddiscussed the different effects of crosslinking agent system, the content of catalyst forvulcanized silicone performance before and after the.The results showed that: in the South system inside ND-22/ND-42use than using theND-22configuration alone into silica gel are greatly improved in operation practice,storage etc.. In order to organic titanium metal as catalyst dealcoholized RTV siliconerubber, found that when the content of catalyst is not high, the influence of crosslinkingagent changes to the operation time more than large catalyst. And the catalyst morechange is small.The curing process of dealcoholized RTV silicone rubber is a reversible reaction, sothis paper also to the wet and heat ageing resistance properties of the material system areanalyzed and studied. And from the crosslinking agent, filler, coupling agent and other aspects of its analysis of materials resistant to the effects of hygrothermal aging. Finallyaccording to the results of the experiments to optimize a Hygrothermal properties ofexcellent formula, and adopted the UL standard certification.At the same time, this paper also on room temperature vulcanized silicone rubberyellowing resistance were discussed, systematic experiment and study from the effect ofcrosslinking agent, ultraviolet absorbent resin, catalyst, several aspects of this resistanceto yellow changing of material and transparency. And the preparation of a yellowingindex below1.5, the mist degree less than3%of the high transparent yellowing ofdealcoholized RTV silicone rubber.