为了比较尼龙线法和上浆剂法两种织物定型方式对T800级薄型碳纤维织物及其预浸料性能的影响,对应制备了两种薄型织物环氧预浸料及其复合材料层合板。利用3D光学影像测量仪、金相显微镜等手段对纤维排布情况进行表征分析,并对层合板力学性能进行对比测试。结果表明:相较于仅局部固定纬向纤维束的尼龙线法,上浆剂法定型的薄型碳纤维织物经纬纤维束排列结构更加紧密稳定,透光率更小,由其制备的复合材料经向力学性能更优,其中经向拉伸强度高出前者30.2%。但两种复合材料纬向纤维偏移角的波动无较大差异,纬向力学性能基本相当。纤维排布情况的不同造成了上述力学性能的波动。
In order to compare the effects of two setting methods,nylon thread setting and sizing agent setting,of T800 thin carbon fabric(CF),two kinds of epoxy prepregs and composites were prepared.The fiber arrangement was characterized and analyzed by 3D optical image projector and metallographic microscope.The mechanical properties of the composites were tested and compared.The results shown that compared with the thin fabric shaped in nylon thread setting method that only the fiber bundles in weft direction were partially fixed,the other one shaped by sizing agent had smaller light transmittance with more compact and stable fiber arrangement,and its composite performed better mechanical property in warp direction,whose tensile strength in warp direction was 30.2% higher than that of the former.However,there was no significant difference in the fluctuation of weft deviation angle and the mechanical properties in weft direction of two kinds of composites were basically same.The different arrangement of warp and weft fibers resulted in the fluctuation of the above mechanical properties.
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