섬유

influence of the surface treatment of graphitized carbon fibers on the curing of an amine-catalyzed epoxy-anhydride system

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 305
the surface of graphitized carbon fibers is oxidatively treated by nitric acid. fourier transform infrared attenuated total reflection spectroscopy has been utilized to monitor the influence of the surface species on the curing of an epoxy system. a curve-fitting program is used to deconvolve the overlapped infrared bands. the integrated intensities of the ester, anhydride, epoxy, and carboxylic acid, plotted against the curing time, clearly show the dependence of the crosslinking process on the concentration of the surface species the surface groups themselves act as a catalyst: there exists an optimal concentration below which an activation of the curing process occurs. above that concentration, a retardation of the curing process has been detected. (author abstract) 20 refs
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