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The Effects of Kevlar Pulp on Polyurethane Foam for Cryogenic Temperature

극저온용 폴리우레탄 폼에 미치는 케블라 펄프의 영향

  • Oh, Jong-Ho (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Bae, Jin-Ho (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Lee, Jae-Myung (Department of Naval Architecture and Ocean Engineering, Pusan National University)
  • 오종호 (부산대학교 조선해양공학과) ;
  • 배진호 (부산대학교 조선해양공학과) ;
  • 이제명 (부산대학교 조선해양공학과)
  • Received : 2018.06.26
  • Accepted : 2018.09.10
  • Published : 2018.12.20

Abstract

Polyurethane foam has excellent mechanical strength and insulation performance, and has been adopted as an insulation material for $-163^{\circ}C$ liquefied natural gas carrier. In this study, Kevlar Polyurethane Foams(K-PUF) were synthesized by adding Kevlar pulp with excellent mechanical strength for the purpose of improving the performance of existing polyurethane foam. Since polyurethane foam has mechanical performance depending on the proportions of Kevlar pulp added, the mechanical strength of the K-PUF with ratios of fiber0.2wt.%, 0.4wt.%, 0.6wt.%, 0.8wt.% and 1.0wt.%) was evaluated. The compression tests were performed on the 4 different temperatures($20^{\circ}C$, $-50^{\circ}C$, $-110^{\circ}C$ and $-163^{\circ}C$) in consideration of the environmental characteristics as a cryogenic insulation used in LNG carrier. Besides, the effects of the fiber addition on polyurethane foam with closed cell structure were evaluated in a phenomenological approach through SEM analysis. All the results were compared to Neat-polyurethane foam. As a results, 0.8wt.% K-PUF showed the improved mechanical strength, and the addition of Kevlar pulp in a certain ratio improves the mechanical performance by enhancing the compression resistance.

Keywords

References

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