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Analysis of the Microstructure and Permeability of the Laminates with Different Fiber Volume Fraction
作者姓名:马悦  李炜  梁子青
作者单位:College of Textiles,Donghua University,National Key Lab of Advanced Composites,Institute of Aeronautical Materials
基金项目:教育部海外归国学者科研基金
摘    要:Microstructures of laminates produced by epoxy/ carbon fibers with different fiber volume fraction were studied by analyzing the composite cross-sections. The main result of the compaction of reinforcement is the flatting of bundle shape, the reducing of gap and the embedment of bundles among each layer. The void content outside the bundle decreased sharply during the compaction until it is less than that inside the bundle when the fiber volume fraction is over 60%. The resin flow velocity in the fiber tow is 10^2 - 10^4 times greater than the flow velocity out the fiber tow no matter the capillary pressure is taken into account or not.

关 键 词:非金属复合材料  显微结构  磁导性  毛细管  胶合布

Analysis of the Microstructure and Permeability of the Laminates with Different Fiber Volume Fraction
MA Yue,LI Wei,LIANG Zi-qing.Analysis of the Microstructure and Permeability of the Laminates with Different Fiber Volume Fraction[J].Journal of Donghua University,2008,25(3):282-285.
Authors:MA Yue  LI Wei  LIANG Zi-qing
Institution:1. Collegeof Textiles, Oonghua University, Shanghai 201620, China
2. National Key Lab of AdvancedComposites, Institute of Aeronautical Materials, Beijing 100095, China
Abstract:Microstructures of laminates produced by epoxy/carbon fibers with different fiber volume fraction were studied by analyzing the composite cross-sections.The main result of the compaction of reinforcement is the flatting of bundle shape,the reducing of gap and the embedment of bundles among each layer.The void content outside the bundle decreased sharply during the compaction until it is less than that inside the bundle when the fiber volume fraction is over 60%.The resin flow velocity in the fiber tow is 102-104 times greater than the flow velocity out the fiber tow no matter the capillary pressure is taken into account or not.
Keywords:microstructure  fiber volume fraction  permeability  capillary pressure  void
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