화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.42, No.3, 485-491, May, 2018
DOI10.7317/pk.2018.42.3.485  Export Citation
에폭시 대두유로 개질된 에폭시 수지의 특성: 화학유변학 및 경화속도론
Properties of Epoxidized Soybean Oil Modified Epoxy Resins: Chemorheology and Cure Kinetics
한원희, 이상묵1, †
  • 동양대학교
  • 1단국대학교 화학공학과
Wonhee Han, and Sangmook Lee1, †
  • Dongyang University, 1 Gyochon-dong, Punggi-eup, Yeongju-si, Gyeongbuk 36040, Korea
  • 1Division of Chemical Engineering, Dankook University, 126 Jukjeon-dong, Suji-gu, Gyeonggi-do 16830, Korea
E-mail:
초록
에폭시 대두유로 개질된 에폭시 수지를 산무수물 경화제를 이용하여 경화시킬 때의 경화거동을 시차주사열량계와 진동 레오미터를 이용하여 연구하였다. 에폭시 대두유 함량이 증가함에 따라 경화반응속도와 경화반응열이 감소하였으며 젤화시간은 길어졌다. 등온경화의 결과는 수정된 Kamal 모델과 잘 부합하였다. 소량의 유연한 에폭시 대두유 부분을 내후성이 우수한 지환형 에폭시 수지에 첨가함으로써 유연성과 내후성이 우수할 뿐만 아니라 가공성이 개선된 에폭시 대두유로 개질된 에폭시 수지를 얻을 수 있다고 사료된다.
Curing behavior of epoxidized soybean oil modified epoxy resins cured in the presence of an anhydride hardener was studied by differential scanning calorimeter (DSC) and oscillatory rheometer. The rate and the heat of cure reaction decreased and the time of gelation lengthened as the epoxidized soybean oil content increased. The isothermal cure results using DSC fitted well to the values calculated by the modified Kamal’s model. It is thought that the reactive epoxidized soybean oil modified epoxy resins with improved processability as well as flexibility and good weather resistance can be obtained by introducing small amount of flexible epoxidized soybean oil to the weather resistible cycloaliphatic epoxy network.
Keywords:epoxidized soybean oil;cycloaliphatic epoxy;methyl hexahydrophthalic anhydride;cure kinetics;chemorheology
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