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    • 83. 发明专利
    • Curable silicone rubber composition
    • 可固化硅橡胶组合物
    • JP2010013495A
    • 2010-01-21
    • JP2008171971
    • 2008-07-01
    • Momentive Performance Materials Incモメンティブ・パフォーマンス・マテリアルズ・ジャパン合同会社
    • TAKAHASHI HIDEO
    • C08L83/07C08K3/08C08K3/10C08K3/36C08K5/14C08K9/06C08L83/05
    • PROBLEM TO BE SOLVED: To provide a curable silicone rubber composition that affords a silicone rubber exhibiting high hardness and excellent tensile strengths and elongation and includes excellent workability before curing.
      SOLUTION: The curable silicone rubber composition includes as essential ingredients (A) 100 pts.wt. of a polyorganosiloxane having a polymerization degree of at least 3,000 and containing 0.001-1 wt.% of a vinyl group, (B) 0.5-10 pts.wt. of a polyorganosiloxane copolymer constituted of an R
      3 SiO
      1/2 unit (wherein, R is a vinyl group or a monovalent hydrocarbon group having no aliphatic unsaturated moiety) and an SiO
      2 unit (wherein, R is a vinyl group or a monovalent hydrocarbon group having no aliphatic unsaturated moiety) with a ratio of the R
      3 SiO
      1/2 unit to the SiO
      2 unit within the range of 0.1-2.0 and bearing 0.5-8 wt.% of a vinyl group, (C) 10-100 pts.wt. of surface-treated fine powder silica obtained by treating the surface of fine powder silica (c-1) having a specific surface area of at least 50 m
      2 /g with a specific surface-treating agent (c-2) and, (D) a necessary amount of a curing agent.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种可提供显示高硬度和优异的拉伸强度和伸长率的硅橡胶的可固化硅橡胶组合物,并且在固化前具有优异的加工性。 解决方案:可固化硅橡胶组合物包括作为必需成分(A)100重量份 的聚有机硅氧烷,其聚合度为至少3,000,并且含有0.001-1重量%的乙烯基,(B)为0.5-10重量份。 的由下列组成的聚有机硅氧烷共聚物:其中R为乙烯基或不具有脂肪族不饱和部分的一价烃基)和SiO 2 单元(其中,R是不具有脂肪族不饱和部分的乙烯基或一价烃基),其比例为R SB 3 SiO 2 / / SB>单元在0.1-2.0的范围内,并且含有0.5-8重量%的乙烯基,(C)10-100重量份的SiO 2 SB / 通过用比表面处理剂(c)处理具有至少50m 2 / SP / g的比表面积的细粉末二氧化硅(c-1)的表面而获得的表面处理细粉二氧化硅 -2)和(D)必需量的固化剂。 版权所有(C)2010,JPO&INPIT