| 摘要 |
<p>PURPOSE:To prepare a composition capable of bleeding silicone oil to the surface of a molded article at a proper rate, by compounding a silicone rubber containing electrically conductive carbon black with a silicone oil having halogenated hydrocarbon group. CONSTITUTION:The objective composition is prepared by compounding (A) 100pts.wt. of an organopolysilocane having an average unit of formula I (R is univalent hydrocarbon group; a is 1.95-2.05) and having a viscosity of >=100cs at 25 deg.C with (B) 0-100pts.wt. of fine powder silica filler, (C) 5-150pts.wt. of electrically conductive carbon black, (D) 1-100pts.wt. of an organopolysiloxane having an average unit of formula II (R<1> is univalent hydrocarbon group; R<2> is halogenated hydrocarbon group; 1<=b<=3; 0.001<=c<=1; 1.95<=b+c<=2.05) and a viscosity of 10-10,000cs at 25 deg.C, and (E) 0.1-10pts.wt. of a curing agent.</p> |
