Radiation Resistance and Fabrication of Carbon Fiber Reinforced Thermoplastic Composites by Electropolymerization

전기중합법에 의한 열가소성 수지 탄소섬유 강화 복합재료의 제조와 내방사선성

  • Park, Minho (Dept. of Chemical Engineering, Pusan National University) ;
  • Kim, Minyoung (Dept. of Chemical Engineering, Pusan National University) ;
  • Kim, Wonho (Dept. of Chemical Engineering, Pusan National University) ;
  • Cho, Wonjei (Dept. of Polymer Science and Engineering, Pusan National University)
  • 박민호 (부산대학교 공과대학 화학공학과) ;
  • 김민영 (부산대학교 공과대학 화학공학과) ;
  • 김원호 (부산대학교 공과대학 화학공학과) ;
  • 조원제 (부산대학교 공과대학 고분자공학과)
  • Received : 1997.02.15
  • Accepted : 1997.05.28
  • Published : 1997.06.10

Abstract

Electropolymerization of 2-vinylnaphthalene (2-VN) and methylmethacrylate (MMA) with high radiation resistance property was conducted on the surfaces of carbon fibers by using a nonaqueous solution of comonomers dissolved in N,N-dimethylformamide containing sodium nitrate as a supporting electrolyte. The fabrication of carbon fiber/2-VN/MMA prepreg was performed electrochemically in 1:1 comonomer solution. Electropolymerization was conduced by changing the current density, initial comonomer concentration, and reaction time. The weight gain on the surface of the carbon fibers was measured by thermogravimetric analyser (TGA). The highest weight gain of 50 wt% was obtained at 600mA/g~800mA/g current density range, but the weight gain was rapidly decreased above 800mA/g current density. The weight gain was increased with the concentration of comonomer, while the concentration of electrolyte had almost no effect on the weight gain. At 300mA/g current density, weight gain rate was increased abruptly to the initial 30 minutes of reaction time. After that the rate was decreased due to the generation of gas bubbles. In order to check the effect of coated polymers on the radiation resistance, morphology changes before and after $\gamma$-ray irradiation was investigated for the composites.

Keywords

Acknowledgement

Supported by : 교육부

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