玄武岩纤维机织针织复合织物增强复合材料的弯曲性能

根据新型的机织针织复合织物的结构特点，分别选用不同线密度的高强高模玄武岩纤维作为经纱、纬纱和针织纱编织这种织物，以其作为增强体，采用VARTM工艺制作了玄武岩纤维/乙烯复合材料。为提供该新型织物增强复合材料的应用依据，测试了复合材料的横向、纵向和斜向弯曲性能，并对各个方向的弯曲载荷-挠度特征曲线及其弯曲断裂形态进行了分析。研究结果表明：这种复合材料具有较好的轴向弯曲性能，横向和纵向的弯曲性能均优于斜向，其弯曲断裂都表现一定的塑性，弯曲能量基本相近。

Bending properties of co-woven-knitted basalt fiber fabric reinforced composites

According to the structural features of co-woven-knitted fabric（CWK）, high tenacity and high modulus basalt fiber filaments with different linear density were used as warp, weft and stitch yarn to produce the CWK fabric, which was used as reinforcement in making basalt filament/ethylene composite by VARTM process. For exploring the application fields of the CWK reinforced composites, the cross, longitudinal, and diagonal bending was tested. The mechanical properties of the composites were investigated by analyzing the load-deflection curves and breaking forms. The strength comparison was made between the warp and weft of the composites. The results revealed that the bending strength in the axial direction was relatively higher, and the bending strength in weft and warp directions was better that in diagonal direction. Plastic fracture breaking was observed and bending energy absorbing is similar.