Tribological Properties of Laminated Fiber Orientation in Carbon Fiber/Epoxy Composites for Reflecting Material of the Electromagnetic Wave

전자파 반사재료로 사용되는 탄소섬유/에폭시 복합재료의 적층 탄소섬유 방향성이 마찰특성에 미치는 영향

  • Chun, Sang-Wook (Department of Chemical Engineering, Dankook University) ;
  • Gimm, Youn-Myoung (Department of Electronic Engineering, Dankook University) ;
  • Kang, Ho-Jong (Department of Polymer Science & Engineering, Dankook University)
  • 천상욱 (단국대학교 화학공학과) ;
  • 김윤명 (단국대학교 전자공학과) ;
  • 강호종 (단국대학교 고분자공학과)
  • Received : 1999.06.01
  • Accepted : 1999.07.07
  • Published : 1999.08.10


The effect of carbon fiber orientation on the tribological properties of carbon fiber/epoxy composites used as a reflecting material for the electromagnetic wave has been investigated. It was found that the carbon fiber/epoxy composite which slides normal to prepreg lay-up direction had less friction and wear that those slides parallel to prepreg fiber lay-up direction due to the increase of delamination between carbon fiber and epoxy. Composite with unidirectional orientation($0/0^{\circ}$) had higher tribological properties than those with multidirectional orientation($0/45/90/-45^{\circ}$ and $0/90^{\circ}$) when the sliding direction was normal to prepreg lay-up direction. This was caused by the debonding between carbon fiber and epoxy which is proportional to contact area between the sliding surface and carbon fiber. Opposite results have been found when the sliding direction was parallel to prepreg lay-up direction due tot he tensile force applied on carbon fiber. In addition, it was shown that wear factor increased with increasing sliding velocity but the friction coefficient did not depend upon the sliding velocity.


Supported by : 한국과학재단


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