화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.43, No.2, 243-251, March, 2019
DOI10.7317/pk.2019.43.2.243  Export Citation
Azide-alkyne 반응을 이용한 In-situ 지방족 강인화제를 적용한 광투명 강인화 에폭시 수지
Transparent Epoxy Resin Toughened with In-situ Azide-alkyne Polymerized Aliphatic Toughening Agent
곽노훈, 이진서, 고나영, 양희상, 영우빈1, †, 이범재†
  • 충남대학교 정밀공업화학과
  • 1중국과학원 재료기술 및 엔지니어링
Nho Hoon Kwak, Jin Seo Lee, Na Yeong Ko, Hee Sang Yang, Wu Bin Ying1, †, and Bumjae Lee†
  • Department of Fine Chemical Engineering and Applied Chemistry, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejeon 34134, Korea
  • 1Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Zhongguan West Road 1219, Ningbo 315201, China
E-mail:,
초록
투명성을 유지하면서 에폭시의 인성을 향상시키기 위해서, in-situ 방법을 이용한 새로운 지방족 구조의 폴리머를 강인화제로 사용하였다. 에폭시와 click 반응의 유사한 반응 속도를 연구하고, 이를 통해 연속적인 에폭시 경화단계를 확립하였다. 먼저 선형의 지방족 강인화제를 에폭시 수지에서 합성하였고 그 후 경화제를 첨가하여 에폭시를 경화하였다. 이를 통해 semi-interpenetrating polymer network(semi-IPN) 구조를 가지는 에폭시를 제작하였다. Semi-IPN 구조를 가지는 강인화 에폭시의 특성은 기존 에폭시 및 preformed 에폭시에 비해 물성이 현저히 향상되었다. 10 wt% 강인화 에폭시의 경우 투명성과 Tg의 변화를 보이지 않으면서 2.62 MPa·m1/2의 향상된 파괴인성 수치를 보였다.
To improve the toughness of the epoxy resin while maintaining their transparency, a novel polymer, which has an aliphatic structure, is synthesized via in-situ azide-alkyne polymerization as a toughening agent. Because of the dissimilar kinetics of the epoxy system and click reaction, sequential curing process was designed. First, linear aliphatic toughening agents were formed in the epoxy resin, followed by curing of the epoxy matrix as the addition of curing agent, resulting in a semi-interpenetrating polymer network (semi-IPN). The toughened epoxy with in-situ synthesized polymer exhibits significantly improved mechanical properties compared to neat and toughened epoxy with preformed polymer, and it has increased value of toughness as high as 2.62 MPa·m1/2 at 10 wt% of toughening agent contents with maintenance of their transparency and glass transition temperature.
Keywords:azide-alkyne click reaction;in-situ toughened epoxy;transparency
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