多层多向机织复合材料细观结构建模及其性能

doi:10.13475/j.fzxb.20180800408

纺织学报 ›› 2019, Vol. 40 ›› Issue (02): 45-52.doi: 10.13475/j.fzxb.20180800408

多层多向机织复合材料细观结构建模及其性能

王心淼¹^,², 陈利¹^,²(), 张典堂³, 陈冬¹^,²

1.天津工业大学纺织科学与工程学院, 天津 300387
2.天津工业大学先进纺织复合材料教育部重点实验室,天津 300387
3.生态纺织教育部重点实验室(江南大学), 江苏无锡 214122

收稿日期:2018-08-01 修回日期:2018-11-16 出版日期:2019-02-15 发布日期:2019-02-01
通讯作者: 陈利
作者简介:王心淼(1989—),女,博士生。主要研究方向立体机织复合材料。
基金资助:
天津市高等学校创新团队项目(TD13-5043)

Micro-structure and properties of multilayer multiaxial woven composites

WANG Xinmiao¹^,², CHEN Li¹^,²(), ZHANG Diantang³, CHEN Dong¹^,²

1. College of Textile Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China
2. Key Laboratory of Advanced Textile Composites, Ministry of Education, Tianjin Polytechnic University, Tianjin 300387, China
3. Key Laboratory of Eco-Textiles (Jiangnan University), Ministry of Education , Wuxi, Jiangsu 214122, China

Received:2018-08-01 Revised:2018-11-16 Online:2019-02-15 Published:2019-02-01
Contact: CHEN Li

摘要/Abstract

摘要：

为分析多层多向机织复合材料的细观结构,基于多层多向机织工艺及不同于传统机织结构的纱线空间运动规律,推导了工艺参数与结构参数之间的关系,建立了细观结构分析模型;为研究多层多向机织复合材料的拉伸性能和失效机制,采用多层多向机织工艺、树脂传递模塑复合工艺,以碳纤维和环氧树脂为原材料制备了2种不同结构的多层多向机织复合材料,采用万能试验机和非接触全场应变仪对材料进行了0°和90°方向的准静态拉伸性能测试,并与正交三向机织复合材料进行了对比分析。结果表明:斜向纱的存在对多层多向机织复合材料的拉伸破坏模式和断口形貌有较大影响,斜向纱一定程度上阻碍了裂纹和应变沿承载方向扩展,0°方向拉伸试样断口处经纱层内经纱全部断裂,90°方向拉伸试样断口处纬纱层内纬纱全部断裂,2个方向的拉伸试样斜向纱层中均存在部分斜向纱纤维未断裂,拉伸试样非完全断裂。

关键词: 多层多向机织, 机织复合材料, 细观结构, 拉伸性能

Abstract:

In order to study the tensile property and failure mechanism of multilayer multiaxial woven composites, based on the multilayer multiaxial weaving process and the spatial movement rule of yarn in the structure, the relationship between process parameters and structure parameters were deduced. Two kinds of multilayer multiaxial woven composites of different structures were prepared from carbon fibers and epoxy resin as raw materials by the multilayer multiaxial weaving process and the resin transfer molding composite process. The quasi-static tensile property of the material were measured by universal testing machine and a non-contact all-field stain meter, and was compared with that of three-dimensional orthogonal composite. The results show that the content of bias yarn in the structure has certain influence of the warpwise tensile property of the multilayer multiaxial woven composites. Bias yarn blocks cracks and strain from extending along the warpwise direction to a certain extent, and influences the failure modes of the material to a great extent. All the warps in the warp layer at the fracture of the sample are broken, and some of yarn in the bias yarn layer are not broken, and the tensioned samples are not completely broken.

Key words: multilayer multiaxial woven preform, woven composite, micro-structure, tensile property

中图分类号:

TB332

王心淼, 陈利, 张典堂, 陈冬. 多层多向机织复合材料细观结构建模及其性能[J]. 纺织学报, 2019, 40(02): 45-52.

WANG Xinmiao, CHEN Li, ZHANG Diantang, CHEN Dong. Micro-structure and properties of multilayer multiaxial woven composites[J]. Journal of Textile Research, 2019, 40(02): 45-52.

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试样编号	纱线层排列	密度/(根·(10 cm)^-1)		纤维体积含量/%		实际厚度/mm
试样编号	纱线层排列	经向	纬向	纤维体积含量/%		实际厚度/mm
WB4	90/0/45/-45/90/ -45/45/0/90	50	50	48.89	6.0
WB2	90/0/90/45/90/ -45/90/0/90	50	50	49.14	5.5
WB0	90/0/90/0/90/0/ 90/0/90	50	50	49.43	5.0

试样编号	方向/ (°)	拉伸强力/ kN	拉伸强度/ MPa	弹性模量/ MPa	泊松比	厚度计算值/ mm
WB4	0	45.38	302.50	39 427	0.275	5.98
WB2	0	37.13	270.46	41 120	0.210	5.51
WB0	0	70.12	561.00	45 887	0.051	5.05
WB4	90	50.06	333.75	29 087	0.281	5.98
WB2	90	52.50	381.82	34 897	0.157	5.51
WB0	90	80.37	643.00	57 078	0.081	5.05

多层多向机织复合材料细观结构建模及其性能

Micro-structure and properties of multilayer multiaxial woven composites

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