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열가소성 고분자를 이용한 사관능성 에폭시 수지의 강인성 향상에 관한 연구
심정섭,정호순,장정식 ( Jyong Sup Shim,Ho Soon Jung,Jyong Sik Jang ) 한국공업화학회 1990 공업화학 Vol.1 No.2
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 modifed epoxy resin was undertaken in HPT 1071/DDS/PEI system.