Toughness Improvement of Tetrafunctional Epoxy Resin with Thermoplastic Polymer

열가소성 고분자를 이용한 사관능성 에폭시 수지의 강인성 향상에 관한 연구

  • Shim, Jyong-Sup (Department of Chemical Technology, Seoul National University) ;
  • Jung, Ho-Soon (Department of Chemical Technology, Seoul National University) ;
  • Jang, Jyong-Sik (Polymer Composites Laboratory, Korea Institute of Science & Technology)
  • 심정섭 (서울대학교 공과대학 공업화학과) ;
  • 정호순 (서울대학교 공과대학 공업화학과) ;
  • 장정식 (한국과학기술연구원 고분자복합재료연구실)
  • Received : 1990.11.22
  • Published : 1990.12.31


In order to improve the mechanical properties and fracture toughness of HPT 1071/DDS system, poly(aryl etherimide) (PEI) was incorporated in the resin system. In HPT 1071/DDS system, mechanical properties of cured epoxy resins were not strongly dependent on the concentration of DDS curing agent strongly. In the case of HPT 1071/DDS/PEI system, the fracture toughness and flexural properties of epoxy resins increased with increasing the concentration of PEI. SEM micrographs of cured epoxy resin indicated that the phase separation occured at the low concentration of PEI in this system. In addition, investigation of the relationship between mechanical properties and the morphology of modified epoxy resin was undertaken in HPT 1071/DDS/PEI system.