| 摘要 |
PURPOSE:To obtain a semiconductive silicone rubber composition giving a molded article having uniform resistance, by crushing crosslinked silicone rubber containing carbon black and adding the rubber to an uncrosslinked silicone rubber base as a filler. CONSTITUTION:The objective composition can be produced by compounding (A) 100pts.wt. of a silicone rubber such as an organosiloxane rubber of formula (R is methyl, vinyl, phenyl, etc., and preferably 0.02-10mol% of R is vinyl; a is 1.9-2.05) and having a viscosity of preferably 1,000-500,000CS (at 25 deg.C) is compounded with (B) 5-95pts.wt. of a crosslinked silicone rubber (preferably a heat-vulcanizable silicone rubber having granular diameter of 0.1-1mm) containing 2-8pts.wt. of carbon black (preferably acetylene black, oil furnace black, etc.).
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