Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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A Study on Polyurethane Adhesive Based Polyester Polyol Polymerized from Sebacic Acid

세바식 산으로 중합된 폴리에스터 폴리올을 원료로 사용한 폴리우레탄 접착제에 관한 연구

  • Jin, Kyung Ho (School of Energy.Materials.Chemical Engineering, Korea University of Technology and Education) ;
  • Kim, Min Su (School of Energy.Materials.Chemical Engineering, Korea University of Technology and Education) ;
  • Cho, Ur Ryong (School of Energy.Materials.Chemical Engineering, Korea University of Technology and Education)
  • 진경호 (한국기술교육대학교 에너지.신소재.화학공학부) ;
  • 김민수 (한국기술교육대학교 에너지.신소재.화학공학부) ;
  • 조을룡 (한국기술교육대학교 에너지.신소재.화학공학부)
  • Received : 2013.04.25
  • Accepted : 2013.05.14
  • Published : 2013.09.30
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Abstract

In this study, sebacic acid made from castor oil was used as monomer with isophthalic acid and glycols for polyester polyol synthesis. Polyurethane adhesive was synthesized from the various polyester polyol. From the result of adhesion strength test, polyester polyol made from sebacic acid showed better adhesive force than that of adipic acid due to higher cohesive energy. Branched glycol containing methyl group represented better adhesion than linear glycol. In the chain extender, adhesion strength increased going from PG, EG, BD. From the measurement of TGA, BD showed the best heat stability, and followed by PG, EG. Glass transition temperature increased in the order PG, EG, BD by the result of DMA.

본 연구에서는 피마자유 유래의 sebacic acid를 isophthalic acid 및 glycol과 병용하여 폴리에스터 폴리올을 중합하고 이어서 폴리우레탄 접착제를 제조하였다. 접착력을 측정한 결과에서 sebacic acid를 병용한 폴리올이 adipic acid를 사용한 폴리올 보다 응집에너지가 커서 접착력이 우수하게 나타났고, glycol은 선형구조 보다 메틸기를 포함하는 가지구조가 더 좋은 접착력을 보였다. 쇄연장제는 1,4-butane diol(BD)를 사용한 것이 가장 접착력이 좋게 나타났다. 또한 TGA 측정결과 내열성은 BD가 가장 높고, 1,2-propylene glycol(PG)가 다음, ethylene glycol(EG)가 가장 낮았다. DMA 측정에서 유리전이온도는 PG, EG, BD의 순서로 높게 나타났다.

Keywords

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