Proceedings of the Korean Society For Composite Materials Conference (한국복합재료학회:학술대회논문집)

The Korean Society for Composite Materials (한국복합재료학회)
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A Study on the Improvement of Microcrack Resistance of Carbon/Epoxy Composites at Cryogenic Temperature

극저온에서 탄소 섬유/에폭시 복합재료의 군열 저항성 향상에 관한 연구

  • 홍중식 (한국과학기술원 항공우주공학 대학원) ;
  • 김명곤 (한국과학기술원 항공우주공학 대학원) ;
  • 김천곤 (한국과학기술원 항공우주공학) ;
  • 공철원 (한국항공우주연구원 구조그룹)
  • Published : 2005.11.18
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Abstract

In the development of a propellant tank using liquid oxygen and liquid hydrogen, the improvement of microcrack resistance of carbon/epoxy composites is necessary for the application of a composite material to tank structures. In this research, two types of carbon/epoxy composites with different matrix systems were tested to measure interlaminar shear strength (ILSS), one of the material properties to evaluate fiber-matrix interface adhesion indirectly. Short beam specimens were tested inside an environmental chamber at room temperature(RT) and at cryogenic temperature( - 150 $^{\circ}C$) respectively. Results showed that the matrix system with large amount of bisphenol-A and CTBN modified rubber had good performance at cryogenic temperature.

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