Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Shear Behavior of Plasma-treated Graphite/Epoxy Laminated Composites Using Oxygen Gas

산소 플라즈마로 표면처리된 탄소섬유/에폭시 적층복합재의 전단거동

  • 김민호 (경희대학교 일반대학원 기계공학과) ;
  • 이경엽 (경희대학교 기계산업시스템공학부) ;
  • 백영남 (경희대학교 기계산업시스템공학부) ;
  • 정동호 (해양심층수연구센터) ;
  • 김현주 (해양심층수연구센터)
  • Published : 2008.09.01
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Abstract

In-plane shear tests were performed to investigate the shear property change of FRP by plasma modification. Graphite/epoxy prepreg was used as a test material and plasma source was a microwave (2.4GHz) type. Plasma was induced by oxygen gas and its flow rate was kept $4{\sim}5$sccm with low vacuum state of $10^{-3}$ Torr. Prepreg was stacked unidirectionally ($[0^0]_8$) after plasma modification. Wettability was determined by measuring a contact angle. The results showed that the contact angle was decreased from $86^0$ to $45^0$ after plasma modification. Shear strength was also improved by ${\sim}10%$. SEM examination was made on the fracture surface and functional group produced by the plasma modification was investigated by XPS.

Keywords

References

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