Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Thermal Properties of Cured Epoxy Resin Filled with Rubber Complex-Treated Silica

고무상 복합물로 표면처리 한 실리카를 충전한 에폭시 수지 경화물의 열적 특성

  • Choi, Sang-Goo (Dept. of Chemical Technology, Chonbuk Sanup University) ;
  • Suh, Won-Dong (Dept. of Chemical Technology, Chonbuk Sanup University)
  • 최상구 (전북산업대학교 공업화학과) ;
  • 서원동 (전북산업대학교 공업화학과)
  • Published : 1997.03.31
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Abstract

[ ${\gamm}-Glycidoxy$ ] propyl trimethoxy silane, CTBN rubber(carboxyl terminated butadiene acrylonitrile rubber) and GMA(glycidyl methacrylate) were reacted on the surface of silica one by one in existence of TEA(triethylamine) or BPO(benzoyl peroxide). The amount of reactant was $2.5{\sim}5.8%$ of treated silica weight. The treated silica was mixed with epoxy resin and MTHPA(methyl tetrahydro phthalic anhydride) in the range of $0{\sim}60%$(wt.%) of total component. The thermal properties were tested for cured products. By using silica treated with silane/rubber or silane/rubber/vinyl, comparing with 3% of rubber mixed directly, it had 13% higher $T_g$ and 10% lower thermal expansion coefficient at $35{\sim}55%$ of silica contents.

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