발포 복합재료 Pultrusion 공정에서의 발포 거동 해석

Analysis of the foaming behavior in pultrusion process of phenolic foam composites

  • 윤명석 (서울대학교 기계항공공학부 대학원) ;
  • 정재원 (서울대학교 기계항공공학부 대학원) ;
  • 이우일 (서울대학교 기계항공공학부 대학원)
  • 발행 : 2005.04.29

초록

An experimental and theoretical study was carried out to estimate the foaming characteristics in the pultrusion process of phenolic foam composite. For the experimental study, a lab-scale pultrusion apparatus was constructed. Methylene chloride(CH2Cl2) was used as a physical blowing agent, glass fiber roving was used as reinforcement and the polymer used was a resol type phenolic resin. Pultruded products were observed to count bubble size by a SEM(Scanning Electron Microscopy). For the theoretical study, a model for bubble growth in a gradually hardening resin was considered and solved for a few foaming conditions.

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