以液相含浸製程摻雜不同碳原料強化材製作針軋三維碳/碳複合材料性質研究

Study of Different Carbon Reinforcement Materials Doping on Three-Dimensional Needled Carbon/Carbon Composites Prepared Through Liquid Infiltration

陳昌毅(Chang-Yi Chen)

指導教授 ： 李國榮

義守大學/理工學院/材料科學與工程學系/碩士(2017年)

摘要

本研究嘗試以針軋碳纖維布之方式製作碳纖維骨架，將碳纖維骨架含浸添加不同碳原料(石墨、奈米碳管、石墨烯、碳黑)之液相酚醛樹脂混合含浸液，經過含浸、熱壓、碳化等製程後製備成多孔性預型材。後續再分別以緻密化循環製作碳/碳複合材料，藉此探討含浸液中所添加不同碳強強化材對試片各項性質之影響。
實驗結果顯示，添加的各類碳原料除碳黑之外，皆可提升碳/碳複合材料試片之機械性質、熱傳導性質及磨耗性質。但在韌性方面，所有的碳原料並沒有成為所想的二次碳強化材，使材料的韌性並未提升。磨耗性質部分，添加的各類碳原料皆有提升碳/碳複合材料的磨擦係數，添加石墨烯的試片其磨耗量約為其他試片的一半是所有試片中最低磨耗量，但磨耗穩定性就不如其他試片。

關鍵字

石墨 ； 奈米碳管 ； 石墨烯 ； 碳黑碳/碳複合材料 ； 液相含浸 ； 快速碳化

並列摘要

This study was first to fabricate carbon fiber skeletons through needled punch method. Secondly, carbon fiber skeletons were impregnated in liquid phenolic resin doped with different carbon reinforcement material (graphite, carbon nanotube, grapheme, carbon black) and vacuum impregnation process was operated. After impregnation process, hot pressing and carbonization processes were adopted to prepare porous carbon preforms. And then, carbon preforms were operated with subsequent densification cycles and impregnation processes to fabricate carbon/carbon composites respectively. The objective of this study is to investigate interrelationships among additions of different carbon reinforcement material properties of carbon/carbon composites.
The results indicate that, addition of different carbon reinforcement material can enhance the mechanical, tribological properties, thermal and electric conductivity of the specimens. However, the different carbon reinforcement material additions did not improve the toughness of carbon/carbon composites obriously. The results aiso shoes carbon reinforcement can improve the wear properties of specimens significantly. The specimens added with graphene showed the minimum weight losses, and specimens added with carbon black showed the best triction stability.

並列關鍵字

graphite ； carbon nanotube ； graphene ； carbon black ； carbon/carbon composite ； liquid infiltration ； fast carbonization

參考文獻

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