| 摘要 |
PURPOSE: A silicon composition is provided to reduce adhesion than existing one, to maintain physical properties such as non-adhesive performance, etc, to obtain excellent initial temperature and moisture maintaining performance and thermal resistance. CONSTITUTION: A silicon composition comprises: 20-60 weight% of silicon hydroxy gum containing an organic group which has one or more carbon atoms in both ends of a back bone, at least two or more hydroxy group and silicon-bonded alkyl groups; 10-50 weight% of H^MQ resin comprising at least one or more hydrogen; 1-20 weight% of Vi^MQ resin comprising at least one or more vinyl group; 0.001-5 weight% of unsaturated hydrocarbon based retarder; and a 0.5-5 weight% of silicon-based additives. The viscosity of the silicone hydroxy gum at 50% relative humidity is 1,000,000-100,000,000 cP and the weight average molecular weight is 100,000-900,000.
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