玻璃短纤维对多层多轴向经编复合材料层间撕裂性能影响

EFFECT OF SHORT GLASS FIBER ON LAYER TEARING PROPERTIES OF MULTI AXIAL WARP KNITTED LAYER COMPOSITES

以玻璃纤维多轴向经编针织物为增强体,以环氧树脂为基体,将玻璃短纤维添加到玻纤织物增强体层之间,制备层间含有玻璃短纤维的多层多轴向经编复合材料。利用万能力学材料试验机对复合材料的层间撕裂性能进行测试和电镜扫描,对撕裂后的复合材料层间形态进行了观察,研究了玻璃短纤维对复合材料层间性能的影响。结果表明,玻璃短纤维增韧处理的复合材料层间撕裂性能明显增强,载荷-位移曲线初始斜率大,复合材料不易被以撕裂形式为主的载荷破坏。

By using the glass fiber multi axial warp knitted fabric as reinforcement, epoxy resin as matrix and adding, short glass fiber to glass fiber fabric reinforced layer, multi-axial warp knitted fabric for composites contai- ning short glass fiber between glass fiber layer was prepared. The short glass fibers between glass fiber fabrics were observed by using SEM after tests, the tensile and tear strength of the composite was tested and studied by the uni- versal mechanical testing machine. The results show that under the same conditions, the layer tearing property of composites treated was obviously enhanced. The load displacement curve of initial slope is large, and the composites are not easy to be destroyed by tearing load form.