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材料工程  2013, Vol. Issue (2): 93-98    DOI: 10.3969/j.issn.1001-4381.2013.02.019
  工艺 本期目录 | 过刊浏览 | 高级检索 |
炭纤维复合材料共固化液体成型工艺及层间性能研究
王炯, 李敏, 顾轶卓, 王绍凯, 张佐光
北京航空航天大学 空天材料与服役教育部重点实验室,北京 100191
Investigation of Co-cured Liquid Composite Molding and Interlaminar Property for Carbon Fiber Composites
WANG Jiong, LI Min, GU Yi-zhuo, WANG Shao-kai, ZHANG Zuo-guang
Key Laboratory of Aerospace Materials and Performance (Ministry of Education), Beihang University, Beijing 100191, China
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摘要 采用共固化液体成型工艺制备了炭纤维/环氧树脂基复合材料层板,分析了层板的密实和两种树脂的相互扩散情况,采用Ⅰ型层间断裂韧性(能量释放率GⅠC)和短梁抗剪强度研究了共固化液体成型层板的层间性能,并与预浸料成型层板和液体成型层板进行了比较。进一步研究了共固化层板中预浸料/液体成型层界面处的纤维取向对GⅠC的影响。结果表明:所制备的共固化液体成型层板,层内密实程度高、层间富树脂区不明显,预浸料/液体成型层的层间处两种树脂有一定程度的相互扩散;受界面处树脂相互扩散的影响,共固化层板的层间断裂韧性处于预浸料层板、液体成型层板的平均水平,而层板的短梁抗剪强度由性能较低的一方决定;预浸料/液体成型层界面处的纤维取向对GⅠC有明显影响,其中[45/90]的情况有着较高的抵抗开裂和裂纹扩展的能力。
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王炯
李敏
顾轶卓
王绍凯
张佐光
关键词 炭纤维复合材料共固化液体成型工艺预浸料Ⅰ型层间断裂韧性    
Abstract:The carbon fiber/epoxy resin matrix composite laminates were fabricated using co-cured liquid composite molding (LCM). The compaction of laminates and diffusion of the two kinds of resins were investigated. Mode-I delamination fracture toughness and short beam shear strength were measured to evaluate the interlaminar property of the co-cured laminates and were compared with those of laminates processed by prepreg molding and liquid composite molding. Moreover, the effects of fiber orientation at the interface between prepreg part and LCM part on GⅠC were studied. The results show that the laminates processed by co-cured LCM have high compacting degree in the intralaminar plies and have no obvious resin-rich area between plies. The two kinds of resins at the interface between prepreg part and LCM part diffuse to some extent. Affected by the diffusion of the two kinds of resins at the interface, the interlaminar fracture toughness of co-cured laminate is equivalent to the average of those of the prepreg laminate and LCM laminate, while short beam shear strength is determined by the weaker part. The fiber orientation at the interface between prepreg part and LCM part has significantly influence on GⅠC, and [45/90] fiber orientation has a better resistance to interlaminar fracture and propagation of delamination.
Key wordscarbon fiber composite    co-cured liquid composite molding    prepreg    mode-Ⅰ interlaminar fracture toughness
收稿日期: 2011-09-05      出版日期: 2013-02-20
中图分类号: 

TB332

 
基金资助:

国家973项目(2010CB631104)

作者简介: 王炯(1987—),女,硕士研究生,从事树脂基复合材料方面研究工作,联系地址:北京航空航天大学材料科学与工程学院(100191),E-mail:sallywang2005@foxmail.com
引用本文:   
王炯, 李敏, 顾轶卓, 王绍凯, 张佐光. 炭纤维复合材料共固化液体成型工艺及层间性能研究[J]. 材料工程, 2013, (2): 93-98.
WANG Jiong, LI Min, GU Yi-zhuo, WANG Shao-kai, ZHANG Zuo-guang. Investigation of Co-cured Liquid Composite Molding and Interlaminar Property for Carbon Fiber Composites. Journal of Materials Engineering, 2013, (2): 93-98.
链接本文:  
http://jme.biam.ac.cn/CN/10.3969/j.issn.1001-4381.2013.02.019      或      http://jme.biam.ac.cn/CN/Y2013/V/I2/93
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