碳纤维/涤纶三维机织复合材料的拉伸性能

Tensile properties of carbon fiber/polyester hybrid 3-D woven composite plates

为研究碳纤维/涤纶复合材料中各组分纤维体积含量对复合材料纵向拉伸性能的影响,通过改变碳纤维与涤纶的混合比例,设计了5种纱线并对其织制的复合材料板材拉伸性能进行研究。结果表明:混杂纤维增强复合材料的拉伸断裂过程与增强纤维各组分的拉伸强度、断裂伸长关系密切;随着涤纶含量的增加,试样的断裂伸长率逐渐增加;抗拉强度、拉伸弹性模量均与涤纶的含量呈三次方的关系;试样的抗拉强度和拉伸弹性模量均产生了明显的混杂效应。

In order to obtain the relationship between fiber volume fraction and tensile fracture of carbon fiber /polyester hybrid fiber reinforced plastics（HFRP）,five kinds of yarns were designed through varying the mixed ratio,and the tensile property of the resulting composites was studied.The results indicated that there is a close relationship between stretching-breaking process and tensile strength of the fiber content of reinforced fibes.The elongation at break of HFRP increased as the content of polyester increases.The tensile strength and tensile elasticity modulus show a cubic equation relationship with the percentage content of polyester.There is an obviously hybrid effect for the sample′s tensile strength and tensile elasticity modulus.