芳纶捆绑对纬编双轴向多层衬纱织物增强环氧树脂复合材料层间性能的影响

Acta Materiae Compositae Sinica(2020)

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Abstract
将芳纶作为捆绑纱制备纬编双轴向多层衬纱(MBWK)织物增强环氧树脂复合材料,研究了MBWK织物增强环氧树脂复合材料层间性能及芳纶捆绑纱对其层间性能的影响.通过三点弯曲和短梁剪切测试,得到MBWK织物增强环氧树脂复合材料的弯曲性能和层间剪切性能,并通过Aramis V6三维场应变测量系统观察实验过程中层间应变变化.与传统涤纶低弹丝捆绑的MBWK织物增强环氧树脂复合材料相比,芳纶捆绑MBWK织物增强环氧树脂复合材料的弯曲性能和层间剪切性能明显提升,弯曲强度和层间剪切强度分别提高了14.21%和12.70%;弯曲模量提高了25.49%.芳纶捆绑MBWK织物增强环氧树脂复合材料在受到面外载荷时,纵向应变(Epsilon X)和层间剪切应变(Epsflon XZ)在中性面区域内较大,且在受到面外载荷时,芳纶捆绑纱起到有效抑制复合材料分层的作用.
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