Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Effect of Ozone Treatment of Carbon Fibers on the Crack Resistance Properties of Epoxy Matrix Composite

탄소섬유의 오존 처리가 에폭시 기지 복합재료의 크랙저항 특성에 미치는 영향

  • 박수진 (한국화학연구원 화학소재연구부) ;
  • 김병주 (한국화학연구원 화학소재연구부) ;
  • 이종문 (전북대학교 고분자공학과)
  • Published : 2003.06.01
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Abstract

In this work, the ozone treatment of carbon fiber surfaces was carried out to enhance the mechanical interfacial properties of carbon fiber-reinforced epoxy matrix composites. The surface properties of carbon fibers before and after treatments were studied by FT-IR, XPS, and contact angle measurements. Crack resistance of the composites was investigated using two types of testing methods, namely critical stress intensity factor (K$_{IC}$) and critical energy release rate (G$_{IC}$). FT-IR and XPS results showed that the number of oxygen functional groups such as OH, O-C=O, C=O, and C-O, increased on the carbon fiber surfaces after ozone treatment. The crack resistance of the ozone-treated carbon fiber composites also showed higher values than those of untreated carbon fiber composites. This may be attributed to the increase in the oxygen-containing functional groups or the degree of adhesion at interfaces between carbon fibers and the matrix resin in the composite system investigated.ted.

Keywords

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