| 摘要 |
PURPOSE:The titled composition which has excellent electrically conductive characteristics, mechanical characteristics, and rubber elasticity, and is extrudable, consisting of a specified polydiorganosiloxane, specified conductive particles, a specified polyorganohydrogensiloxane, and platinum (compound). CONSTITUTION:100pts.wt. of at least one polydiorganosiloxane (A) of an average degree of polymerization of 500-12,000 in which at least two of the organic groups attached to an Si atom in a molecule are vinyl groups; 100-500pts.wt. conductive particles (B) of an average particle diameter of 10-100mum prepared by coating a base material comprising Ni powders of an average particle diameter of 1-50mum with Ni of a coverage of 10-70wt%; 0.1-10pts.wt. polyorganohydrogensiloxane (C) which contains in average at least two H atoms attached to an Si atom in a molecule, with the number of these H atoms being 0.5-10 per vinyl group attached to an Si atom of component A; and platnium (compound) (D) in an amount of 0.2-300ppm (on a Pt basis) based on A+B+C in total are compounded. |
