2.5D角联锁织物厚向压缩特性的实验研究  

Experimental study on compaction characteristics of 2.5D angle-interlock woven fabric

作　　者：万喜莉 孙颖[1] 陈利[1] 李嘉禄[1] 

机构地区：[1]天津工业大学先进纺织复合材料教育部和天津市省部共建重点实验室,天津300387

出　　处：《纺织学报》2015年第2期49-54,70,共7页Journal of Textile Research

基　　金：国家自然科学基金青年基金项目(11102133);国家质量监督检验检疫总局项目(201210260)

摘　　要：以碳纤维2.5D衬经结构织物为例,初步研究了2.5D角联锁织物厚度方向压缩特性,利用万能材料试验机测得织物厚度与压缩应力的关系。研究发现,当压缩应力小于3 MPa时,经验指数取为3的多层平纹织物压缩模型可用于2.5D衬经织物厚度与压缩应力关系估算。在4种不同压缩应力下制备2.5D衬经结构复合材料,进一步观测经向和纬向截面内经纱、衬经纱和纬纱屈曲变化情况,引用纱线段局部屈曲角分布定量表征纱线的屈曲程度。结果发现:经纱的屈曲程度最高,随压缩应力的增加,经纱的屈曲程度降低;当压缩应力超过一定范围时,经纱屈曲程度反而增加,衬经纱和纬纱基本呈伸直状态,衬经纱屈曲程度增加,纬纱伸直度增加。Taking 2.5D with stuffer warp carbon woven fabric for example, the compaction characterization of 2.5D angle-interlock woven fabric had been studied preliminarily, and the relationship between thickness and compaction pressure could be acquired by using island ferry universal material testing machine;. The research showed that the compaction modelling of multilayer plain fabrics with empirical index of 3 could approximately reflect the relationship between thickness and compaction pressure of 2.5D with stuffer warp carbon woven fabric when the compaction pressure was less than 3 MPa. Further more, the 2.5D with stuffer warp woven composites were manufactured under four different compaction pressure, then the distribution of local crimp angle of yarn segment were applied to represent the degree of yarn waviness by observing the warp, stuffer warp and weft structure in warp and weft cross-section, it was found that the degree of warp crimp was the highest, and the warp crimp decreased with the increase of compaction pressure, when the pressure was over a certain range, the warp crimp increased ; The stuffer warp and weft were basically straight, but the crimp of stuffer warp increased while the pressure was over the certain range, and the weft became more straight.

关 键 词：2.5D角联锁织物 厚向压缩 织物厚度-压缩应力曲线 局部屈曲角 

分 类 号：TB332[一般工业技术—材料科学与工程]