Journal of the Korean Industrial and Engineering Chemistry, Vol.1, No.1, 63-72, October, 1990
표면처리된 실리카를 중전한 에폭시 수지계의 물성에 관한 연구; I.실리카의 표면처리 및 혼합물성
A Study on Physical Properties of Epoxy Resin Filled with Surface-treated Silica:I. Surface-treating of Silica and Properties of Mixtures
초록
결정성 실리카의 표면을 아민(TEA, CTMAB, BETAC) 및 과산화물(BPO) 촉매를 사용하여 실란(A 187), 액상고무(CTBNx8), 비닐단량체(AA, MMA, 2-HEA, GMA) 등으로 차례로 반응시켜 새로운 표면처리 실리카를 제조하였다. 표면처리 효과를 검토하기 위하여 실리카를 에폭시 수지에 전체 혼합물 중 0∼36%(부피 %)의 범위로 혼합하여 혼합 점도 및 침전율의 변화를 시험하였다. 실험 결과 표면 피복량은 반응 촉매의 양과 종류에 의존하였으며, 촉매량 0.1∼20%에서 실리카에 대한 피복량은 2.5∼5.8% 범위의 값을 표시하였고, 실리카의 표면이 실란/고무, 실란/고무/비닐로 점차 처리됨에 따라서 무처리물이나 실란처리물에 비하여 점도가 저하되었으며, 침전율도 낮은 값을 표시하였다. 표면처리 상태는 처리제의 종류에 따라서 각기 다른 특성을 나타내었다.
Surface of crystalline silica was sequentially reacted with silane(A 187), liquid rubber(CTBNx8) and vinyl monomer(AA, MMA, 2-HEA, GMA) in existance of amines(TEA, CTMAB, BETAC) or peroxide(BPO). By mixing it with epoxy resin at a ratio 0∼36%(volume %) of total component, liquid properties of mixtures was investigated experimentally.
i) Coating ratio depended on quantity and sorts of catalyst.
ii) Total coating of 2.5∼5.8% was attained by using 0.1∼2.0% of catalyst.
iii) Treated surfaces represented each different features in according to sorts of treatment.
iv) Silane/rubber or silane/rubber/vinyl represented lower viscosity and settling than non-treated or silane-treated.
i) Coating ratio depended on quantity and sorts of catalyst.
ii) Total coating of 2.5∼5.8% was attained by using 0.1∼2.0% of catalyst.
iii) Treated surfaces represented each different features in according to sorts of treatment.
iv) Silane/rubber or silane/rubber/vinyl represented lower viscosity and settling than non-treated or silane-treated.
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