Textile Coloration and Finishing (한국염색가공학회지)

The Korean Society of Dyers and Finishers (한국염색가공학회)
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Effect of Stereoisomeric Structures of Curing Agents on Curing Behaviors, Thermal and Mechanical Properties of Epoxy Resins

경화제의 입체 이성질체 구조가 에폭시 수지의 경화 거동과 열 및 기계적 특성에 미치는 영향

  • Lee, Minkyu (Department of Textile System Engineering, Kyungpook National University) ;
  • Kwon, Woong (Department of Textile System Engineering, Kyungpook National University) ;
  • Jeong, Euigyung (Department of Textile System Engineering, Kyungpook National University)
  • 이민규 (경북대학교 섬유시스템공학과) ;
  • 권웅 (경북대학교 섬유시스템공학과) ;
  • 정의경 (경북대학교 섬유시스템공학과)
  • Received : 2018.07.17
  • Accepted : 2018.08.09
  • Published : 2018.09.27
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Abstract

To study the effect of stereoisomeric structures of curing agents on curing behaviors, thermal and mechanical properties of epoxy resins, DGEBA(diglycidyl ether of bisphenol A) epoxy resin and 3,3'- and 4,4'-DDS(diaminodiphenyl sulfone) curing agents were selected. The curing initiation temperature and activation energy of DGEBA/3,3'-DDS was lower than DGEBA/4,4'-DDS. DGEBA/3,3'-DDS has a faster curing rate and higher degree of cure than DGEBA/4,4'-DDS, suggesting that 3,3'-DDS has higher reactivity than 4,4'-DDS. Tensile strength and fracture toughness of DGEBA/3,3'-DDS was lower than those of DGEBA/4,4'-DDS, indicating that mechanical properties of the epoxy resin can be different only by the stereoisomeric difference in chemical structure of the curing agent.

Keywords

References

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