ROOM TEMPERATURE-CURING SILICON RUBBER COMPOSITION

摘要

PURPOSE: A silicon rubber composition is provided, which is cured at a room temperature and has an excellent binding-durability after curing. CONSTITUTION: A silicon rubber composition comprises (a) 100 parts by weight of polydiorganosiloxanes containing 20-100 parts by weight of the polydioreganosiloxane illustrated by formula 1, and 100 parts by weight of the polydioreganosiloxane illustrated the formula 2; (b) 1-25 parts by weight of a cross-coupling agent selected from the alkoxysilane represented by R¬5bSi(OR¬6)4-b and the partially hydrolyzed condensate thereof; (c) 0.5-10 parts by weight of an organo-titanium compound; and (d) 0.01-5 parts by weight of additives selected from a photo-stabilizing agent and a UV absorbing agent. Preferably the oregano-titanium compound (c) is titanic acid ester or titanium chelate, the photo-stabilizing agent is a hindered amine compound, and the UV absorbing agent is selected from benzotriazole compounds, benzophenone compounds, arylester compounds, cyanoacrylate compounds and triazine compounds.