论文部分内容阅读
以碳纤维和芳纶纤维为原料制备了三维四层浅交弯联机织物,将酚醛树脂和其他填料组成树脂体系,并与浅交弯联机织物以1∶1(wt,质量比)的比例进行复合成型,制成三维浅交弯联复合材料。通过改变织物的纬密获得3种浅交弯联机复合材料,探究不同纬密对复合材料在经纬向弯曲性能的影响。结果表明,复合材料的经向弯曲强度先减小后增大,纬向弯曲性能先增大后减小。在纬密相同的条件下,纬向弯曲强度和模量均大于经向。复合材料中的纬密变化会影响预制体的经纱状态,织物孔径和最后与树脂复合的状态从而影响复合材料的弯曲性能。
The carbon fiber and the aramid fiber were used as the raw materials to prepare the three-dimensional four-layer shallow cross-jointing woven fabric, and the phenolic resin and other fillers were compounded into the resin system and compounded with the shallow cross-linking woven fabric in the ratio of 1: 1 (wt, mass ratio) Forming, made of three-dimensional light cross-bend composite materials. By changing the weft density of the fabric, three types of shallow cross-jointing composite materials were obtained to investigate the effect of different weft density on the warp and weft bending properties of the composite materials. The results show that the warp bending strength of the composites decreases first and then increases, and the warp bending property firstly increases and then decreases. In the same conditions of weft density, weft bending strength and modulus are greater than the warp. The change of weft density in the composite will affect the warp state of the preform, the pore size of the fabric and finally the state of the composite with the resin, thereby affecting the bending properties of the composite.