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Effects of oil absorption on the wear behaviors of carbon/epoxy woven composites

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2011, 12(4), pp.249-251
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General

LEEJAEHA 1 Jae S. Lee 2 Rhee Kyong Yop 1

1경희대학교
2Kyung Hee University

Candidate

ABSTRACT

Carbon/epoxy woven composites are prominent wear-resistant materials due to thestrength,stiffness, and thermal conductivity of carbon fabric. In this study, the effect of oilabsorption on the wearbehaviors of carbon/epoxy woven composites was investigated. Wear tests were performed ondry and fully oil-absorbed carbon/epoxy woven composites. The worn surfaces of the test specimenswere examined via scanning electron microscopy to investigate the wear mechanisms of oil-absorbed carbon/epoxy woven composites. It was found that the oil absorption rate was 0.14% when the carbon/epoxy woven composites werefully saturated. In addition, the wear properties of the carbon/epoxy woven composites were found to beaffected by oilabsorption. Specifically, the friction coefficients of dry and oil-absorbed carbon/epoxy woven composites were 0.25-0.30 and 0.55-0.6, respectively. The wear loss of the oilabsorbed carbon/epoxy woven composites was 3.52 × 10-2 cm3, while that of the dry carbon/epoxy woven composites was 3.52 × 10-2 cm3. SEM results revealedthat the higher friction coefficient and wear loss of the oil-absorbed carbon/epoxy woven composites can beattributed tothe existence of brokenand randomly dispersed fibers due to the weak adhesion forces between the carbon fibers and the epoxy matrix.

Citation status

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This paper was written with support from the National Research Foundation of Korea.