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논문 기본 정보

자료유형
동향자료
저자정보
Park, Jong-Min (Department of polymer Science and Engineering, Chungnam National University) Ahn, Chong-Jin (Department of polymer Science and Engineering, Chungnam National University) Joo, Hyeok-Jong (Department of polymer Science and Engineering, Chungnam National University)
저널정보
한국탄소학회 Carbon letters Carbon letters 제9권 제4호
발행연도
2008.1
수록면
316 - 323 (8page)

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The factors that influence ablation resistance in fiber composites are properties of the reinforced fiber and matrix, plugging quantity of fiber, geometrical arrangement, crack, pore size, and their distributions. To examine ablation resistance according to distribution of crack and pore size that exist in carbon/carbon composites, this study produced various sizes of unit cells of preforms. They were densified using high pressure impregnation and carbonization process. Reinforced fiber is PAN based carbon fiber and composites were heat-treated up to $2800^{\circ}C$. The finally acquired density of carbon/carbon composites reached more than $1.932\;g/cm^3$. The ablation test was performed by a solid propellant rocket engine. The erosion rate of samples is below 0.0286 mm/s. In conclusion, in terms of ablation properties, the higher degree of graphitization is, the more fibers that are arranged vertically to the direction of combustion flame are, and the less interface between reinforced fiber bundle and matrix is, the better ablation resistance is shown.

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