ONE-PART ORGANOPOLYSILOXANE RUBBER FOR HIGH VOLTAGE ELECTRICAL INSULATOR

摘要

The present invention relates to a one-part room temperature vulcanizable organopolysiloxane rubber composition which crosslinks in the presence of moisture to form a coating for the corrosion protection of metals which is obtained by mixing the following: a) from about 20 to about 60 weight percen t of one or more polydiorganosiloxane fluids, b) from 0 to about 40 weight percent of a cycloorganosiloxane, c) from 0 to about 40 weight percent of an inorganic extending or non-reinforcing filler, d) from about 0.5 to about 15 weight percent of an amorphous SiO2 reinforcing filler, e) from about 1 to 7 weight percent of an oximinosilane cross-linkin agent, f) from about 0.2 to about 3 weight percent of an adhesion promoter, g) from about 0.02 to about 3 weight percent of an organotin salt; and h) from about 20 to about 50 weight percent of alumina trihydrate, the alumina trihydrate having a median partic le size of 10 ~m to 30 ~m.