Physical Properties of Epoxy Resin Filled with Surface-treated Silica : II. Properties of Cured Epoxy Resin

표면처리 실리카를 충전한 에폭시 수지계의 물성에 관한 연구 : II. 에폭시 수지 경화물의 물성

  • Hong, Suk-Pyo (Department of Chemical Technology, Chonbuk National University) ;
  • Choi, Sang-Goo (Department of Chemical Technology, Chonbuk National University)
  • 홍석표 (전북대학교 공과대학 공업화학과) ;
  • 최상구 (전북대학교 공과대학 공업화학과)
  • Received : 1990.08.27
  • Published : 1990.12.31


${\gamma}$-Glycidoxy propyl trimethoxy slilane, CTBN rubber(carboxyl terminated butadiene acrylonitrile rubber) and GMA(glycidyl methacrylate) were reacted with the surface of silica one by one in existence of TEA(triethylamine) or BPO(benzoyl peroxide). The amount of reactant was 2.5~5.8% of treated silica weight. The treated silica was mixed with epoxy resin and MTHPA(methyltetrahydrophthalic anhydride) in the range of 0~60% (wt. %) of total component. The flexural and thermal properties were tested for cured products. In filler content 35~55%, the using of silica treated with silane/rubber or silane/rubber/vinyl represented 25% higher flexural strength, 5% lower flexural modulus and 13% higher than mixing liquid rubber 3% with epoxy resin containing untreated silica.