Journal of Adhesion and Interface (접착 및 계면)

The Society of Adhesion and Interface, Korea (한국접착및계면학회)
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Synthesis and Characterization of Propylene Glycol based Polyol and Urethane modified Epoxy Monomer for Flexibility

Flexibility 도입을 위한 Propylene glycol 기반 폴리올, 우레탄 변성 에폭시 합성 및 특성 분석

  • Jeon, Jaehee (Center for Advanced Specialty Chemicals, Korea Research Institute of Chemical Technology) ;
  • Hwang, Chiwon (Center for Advanced Specialty Chemicals, Korea Research Institute of Chemical Technology) ;
  • back, Jong-ho (Center for Advanced Specialty Chemicals, Korea Research Institute of Chemical Technology) ;
  • Lim, Choongsun (Center for Advanced Specialty Chemicals, Korea Research Institute of Chemical Technology) ;
  • Seo, Bongkuk (Center for Advanced Specialty Chemicals, Korea Research Institute of Chemical Technology) ;
  • Yu, Youngchang (Center for Advanced Specialty Chemicals, Korea Research Institute of Chemical Technology) ;
  • Lee, Wonjoo (Center for Advanced Specialty Chemicals, Korea Research Institute of Chemical Technology)
  • 전재희 (한국화학연구원 정밀화학융합기술연구센터) ;
  • 황치원 (한국화학연구원 정밀화학융합기술연구센터) ;
  • 백종호 (한국화학연구원 정밀화학융합기술연구센터) ;
  • 임충선 (한국화학연구원 정밀화학융합기술연구센터) ;
  • 서봉국 (한국화학연구원 정밀화학융합기술연구센터) ;
  • 유영창 (한국화학연구원 정밀화학융합기술연구센터) ;
  • 이원주 (한국화학연구원 정밀화학융합기술연구센터)
  • Received : 2021.02.05
  • Accepted : 2021.03.15
  • Published : 2021.03.31
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Abstract

In this study, a polyol was prepared using Jeffamine D-400 as a propylene glycol-based diamine to impart flexibility to the urethane-modified epoxy, and a urethane-modified epoxy was synthesized using the polyol. Urethane-modified epoxy synthesized with existing Bisphenol A diglycidyl ether (BADGE) epoxy, a curing agent, and a curing accelerator are mixed to prepare an epoxy adhesive, and shear strength is measured by measuring adhesion strength. As a result, shear strength and shear elongation tended to increase. These results are due to the high crosslinking density. It is believed that it can be applied to structural adhesives that are restricted in use.

본 연구에서는 우레탄 변성 에폭시의 유연성 부여를 위해 propylene glycol(PPG) 기반 diamine인 Jeffamine D-400을 이용하여 폴리올을 만들고 이를 이용하여 우레탄 변성 에폭시를 합성하였다. Bisphenol A diglycidyl ether(BADGE)에 합성한 우레탄 변성 에폭시와 경화제, 경화촉진제를 배합하여 에폭시 접착제를 제조하고 접착강도 측정으로 전단 강도를 측정하였다. 측정 결과 합성한 우레탄 변성 에폭시의 우레탄 결합과 PPG사슬 도입을 통한 유연성 부여 효과로 인해 전단 강도와 전단 신율이 증가하는 경향을 보였다. 이러한 결과는 높은 가교 밀도로 인해 사용에 제약을 받고 있는 구조용 접착제에 적용이 가능할 것으로 판단된다.

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