Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Preparation and Characteristic of Carbon/Carbon Composites with Coal-tar and Petroleum Binder Pitches

석탄계 및 석유계 피치가 함침된 탄소/탄소 복합재료 제조 및 특성

  • Received : 2015.05.07
  • Accepted : 2015.06.18
  • Published : 2015.08.10
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Abstract

Unidirectional carbon/carbon (C/C) composites were manufactured using phenolic resins as a precursor of the carbonized matrix throughout a one-step manufacturing process. Also, molybdenum oxide ($MoO_3$) and binder pitches were impregnated with phenolic resins to improve the bulk density and mechanical property of the C/C composites. In this study, the influence of $MoO_3$ and binder pitches on mechanical properties of the C/C composites were investigated by measuring flexural strength (${\sigma}_f$) and interlaminar shear strength (ILSS). The results show that the enhancement of interfacial adhesions between the fibers and matrix resins of the C/C composites with $MoO_3$ and binder pitches which led to the improvement of mechanical properties of the C/C composites. This indicates that the presence of $MoO_3$ and binder pitches in C/C composites can develop the graphite structure and increase the bulk density.

일방향의 탄소/탄소 복합재료는 탄화 매트릭스의 전구체인 페놀수지를 사용하여 단일 공정을 통하여 제조하였으며, 탄소/탄소 복합재료의 밀도와 기계적 물성을 향상시키기 위하여 페놀수지에 산화몰리브덴($MoO_3$)과 바인더 피치를 첨가하였다. 본 연구에서는 $MoO_3$와 바인더 피치 첨가로 인한 탄소/탄소 복합재료의 기계적 물성에 미치는 영향에 대해 굴곡강도와 층간전단강도 측정을 통하여 고찰하였다. 결과적으로 $MoO_3$와 바인더 피치가 첨가된 탄소/탄소 복합재료들은 탄소섬유와 매트릭스간의 계면결합력 증가로 인하여 기계적 물성이 향상됨을 관찰할 수 있었다. 이는 $MoO_3$와 바인더 피치를 첨가함으로써 탄소/탄소 복합재료의 흑연구조가 발달함과 동시에 밀도를 향상시킬 수 있음을 나타낸다.

Keywords

References

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