2.5维机织复合材料经纬向力学性能实验研究  

Experimental Study on the Mechanical Properties of 2.5D Woven Composites

作　　者：李姗姗 张雷 王京红 罗欣 LI Shanshan;ZHANG Lei;WANG Jinghong;LUO Xin(China Textile Academy Co.,Ltd,Beijing 100025,China;State Key Laboratory of Biobased Fiber Manufacturing Technology,Beijing 100025,China)

机构地区：[1]中国纺织科学研究院有限公司研究开发中心,北京100025 [2]生物源纤维制造技术国家重点实验室,北京100025

出　　处：《材料导报》2020年第S02期603-606,共4页Materials Reports

摘　　要：本文基于2-2带衬经结构的层-层正交角联锁织物结构优势,制备了相应的复合材料,进行了拉伸性能和剪切性能试验,分析了2.5维机织复合材料经纬向的力学性能。研究发现,在经向增强2/2角联锁织物增强复合材料拉伸试验中,试件纬向的最大拉伸强度较经向大,且经纬向拉伸断口都较为规整;在经向增强2/2角联锁织物复合材料短梁弯层间剪切强度测试中,纬向达到最大破坏载荷时,试件的破坏程度较经向大,部分纤维从层间被剥离出来,而经向没有明显的破坏痕迹,且纬向最大层间剪切强度大于经向。In this paper,based on the structural advantages of 2-2 layer by layer orthogonal angle interlock fabric with lining warp structure,the corresponding composite materials were prepared,the tensile and shear properties were tested,and the mechanical properties of 2.5D woven composite materials in warp and weft direction were analyzed.It was found that the maximum tensile strength of the specimen in the longitudinal direction is larger than that in the longitudinal direction,and the longitudinal and latitudinal tensile fractures are more regular in the tensile test of the warp reinforced 2/2-angle interlock fabric reinforced composite;in the interlaminar shear strength test of the short beam of the warp reinforced 2/2-angle interlock fabric composite,when the longitudinal direction reaches the maximum failure load,the damage degree of the specimen is larger than that in the longitudinal direction,and some fibers are from the layer.The maximum interlaminar shear strength in the latitudinal direction is greater than that in the meridional direction.

关 键 词：2.5维机织 复合材料 经纬向 拉伸性能 剪切性能 

分 类 号：TB332[一般工业技术—材料科学与工程]