Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Synthesis and Structural Analysis of Thermal and Photo Crosslinkable Polyurethane with high Thermal Stability 1. Mechanical Property and Orientational Behavior

열 및 광가교화에 의한 내열성 향상 폴리우레탄의 합성 및 구조분석 1. 물리적 특성 및 배향거동

  • Seo, Bong-Seok (Department of Textile Engineering, Inha University) ;
  • Lee, Han-Seop (Department of Textile Engineering, Inha University)
  • 서봉석 (인하대학교 섬유공학과) ;
  • 이한섭 (인하대학교 섬유공학과)
  • Published : 1997.03.01

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Abstract

Polyurethanes were initially synthesized with MDI, polyester type polyol and chain extender containing conjugated diacetylene groups. Interchain cross-linking reaction between diacetylene groups was achieved by UV-irradiation or heat treatment. Interchain cross-linking reaction between diacetylene groups was confirmed with the Raman spectroscopy and the extent of crosslinking reaction was observed by increasing the UV irradiation time or heat treatment time. Cross-linked polyurethanes exhibited higher stress than linear polyurethane at the same strain level. The chemical cross-linkages between diacetylene groups appeared to make more stable hard domain to the external deformation.

Keywords

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