| 三维机织预制体增密速率分析 |
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| 引用本文： | 杨彩云,胡振英,周红英.三维机织预制体增密速率分析[J].固体火箭技术,2009,32(2). |
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| 作者姓名： | 杨彩云 胡振英 周红英 |
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| 作者单位： | 1. 天津工业大学纺织学院天津市和教育部共建先进纺织复合材料重点实验室,天津,300160
2. 西安航大复合材料研究所,西安,710025 |
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| 摘 要： | 研究了三维机织预制体孔隙结构对CVI及树脂浸渍增密速率的影响,并利用偏光显微镜和电镜对三维机织微观结构进行观察.结果发现,三向正交机织(SZJ)预制体由于孔隙分布较窄,且气孔平直,使其致密化速度较快;角联锁机织(JLS)预制体由于经纬交织成网状结构,孔隙分布较宽,且气孔弯曲,使其致密化速度较慢.在偏振光下观察,二者虽然都获得粗糙层结构热解炭,但微观结构仍存在差别,三维角联锁C/C复合材料与三向正交C/C复合材料比较,前者消光角大,形貌更为粗糙,更富有层次感.
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| 关 键 词： | C/C复合材料 三维机织预制体 致密化 微观结构 |
Research on densification of 3D woven preform C/C composites |
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| YANG Cai-yun,HU Zhen-ying,ZHOU Hong-ying.Research on densification of 3D woven preform C/C composites[J].Journal of Solid Rocket Technology,2009,32(2). |
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| Authors: | YANG Cai-yun HU Zhen-ying ZHOU Hong-ying |
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| Institution: | YANG Cai-yun~1,HU Zhen-ying~1,ZHOU Hong-ying~2 (1.Tianjin and Ministry of Education Key Laboratory of Advanced Textile Composite Materials,Textile College,Tianjin Polytechnic University,Tianjin 300160,China,2.Xi an Aerospace Composite Research Institute,Xi an 710025,China) |
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| Abstract: | The influence of pore-structure in 3D woven preform on CVI and resin densification rate was studied.The microstructures of two kinds of C/C composites were observed by means of polarized light microscopy and SEM.The results show that densification rate of the 3D orthogonai preform is faster because of its narrow and parallel cavity,whereas that of the 3D angle interlock preform is lower because of its wide and curve cavity.The observation with polarized light microscopy shows that the microstructures of two... |
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| Keywords: | carbon/carbon composites 3D woven preform densification rale microstructure |
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