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아라미드섬유/페놀수지 프리프레그의 Tack성 분석

Analysis of Tack Properties of Aramid/Phenolic Prepreg

  • 홍태민 (충남대학교 유기소재섬유시스템공학과) ;
  • 이지은 (충남대학교 유기소재섬유시스템공학과) ;
  • 홍영기 (건양대학교 패션디자인산업학과) ;
  • 이정순 (충남대학교 의류학과) ;
  • 조대현 (충남대학교 의류학과) ;
  • 이승구 (충남대학교 유기소재섬유시스템공학과)
  • Hong, Tae Min (Department of Advanced Organic Materials & Textile System Engineering, Chungnam National University) ;
  • Lee, Ji Eun (Department of Advanced Organic Materials & Textile System Engineering, Chungnam National University) ;
  • Hong, Young Ki (Department of Fashion Design & Apparel Industry, Konyang University) ;
  • Lee, Jung Soon (Department of Clothing & Textiles, Chungnam National University) ;
  • Cho, Dae Hyun (Korea Textile Development Institute) ;
  • Lee, Seung Goo (Department of Advanced Organic Materials & Textile System Engineering, Chungnam National University)
  • 투고 : 2013.06.20
  • 심사 : 2013.09.17
  • 발행 : 2013.09.30

초록

섬유 프리프레그(prepreg)는 복합재료를 제조하기 위한 중간성형재료이다. 아라미드섬유직물에 범용 페놀수지와 polyvinyl butyral (PVB) 변성 페놀수지를 각각 40 wt%씩 도포하고, 열처리를 통해 B-stage 상태의 섬유 프리프레그를 제조하였다. 섬유 프리프레그의 표면형상을 주사전자현미경을 이용하여 관찰하였다. 프리프레그의 tack성은 복합재료 성형 시에 매우 중요한 특성으로 본 연구에서는 시험적 요인에 따른 tack성을 보기 위하여 probe tack 시험법을 적용하였다. 시험시의 contact time, contact force, debonding rate를 변수로 두었다. 섬유 프리프레그의 tack성은 시험적 요인의 증가에 따라 비례적으로 증가하다가 임계점에서부터는 일정한 값을 가지는 것을 확인하였다. 최종적으로 debonding rate에 따른 tack성의 변화와 프리프레그 표면에서의 fibrillation과의 상관관계를 고찰하였다.

The prepreg material is a sheet of the reinforcement pre-impregnated with a resin. In this study, two types of prepreg were prepared with a general phenolic resin and the polyvinyl butyral (PVB) modified phenolic resin, respectively, with resin content of 40 wt%. After resin impregnation, the prepregs were heat treated in an oven to make them the B-stage. Surface morphology of the prepreg was observed by using a scanning electron microscope (SEM). Tack property of the prepreg is one of the major properties that govern the ability of prepreg to be laid up. In this study, the tack of prepreg was measured under various test parameters by a probe tact test. Test parameters were contact time, contact force and debonding rate. Most of the tack properties of the prepreg increased with the test parameters. Then tack properties exhibited a linear behavior with test parameters before a saturation point. Also, the tack of prepreg was investigated in relation with the fibrillation phenomena involved in the prepreg surface with the debonding rate.

키워드

참고문헌

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