Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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A Study on the Synthesis and Physical Properties of Polyurethane Elastomer

Polyurethane 탄성체(彈性體)의 합성(合成)과 물성(物性)에 관(關)한 연구(硏究)

  • Yoon, Jeong-Sik (Dep. of Chemical Engineering, Kyung Hee University) ;
  • Yoo, Chong-Sun (Dep. of Chemical Engineering, Kyung Hee University) ;
  • Paik, Nam-Chul (Dep. of Chemical Engineering, Kyung Hee University)
  • 윤정식 (경희대학교 공과대학 화학공학과) ;
  • 유종선 (경희대학교 공과대학 화학공학과) ;
  • 백남철 (경희대학교 공과대학 화학공학과)
  • Published : 1990.03.31
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Abstract

The purpose of this study is to estabilish the synthetic condition of polyurhethane elastomer for excellent properties. Polyurethane elastomer which have different NCO percentage and hard segment contents was synthesized by casting method. And the effects of hard segment contents were investigated by analytical methods such as IR, DSC, etc. [NCO]/[OH] ratio was proper at the range $1.02{\sim}1.05$. By IR absorption peak($1250cm^{-1}$) which indicate interurethane hydrogen bond it was confirmed that hard segment were crystallized. Melting point that was determined by DSC showed the effects of hard segment contents, phase mixing and crystalline size.

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