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材料研究学报  2015, Vol. 29 Issue (8): 613-621    DOI: 10.11901/1005.3093.2014.613
  本期目录 | 过刊浏览 |
多层连接碳纤维纬编双轴向衬纱织物增强复合材料的层间剪切性能
裴晓园1,2,尚博1,3,李嘉禄1(),陈利1,丁刚4,5
1. 天津工业大学复合材料研究所 教育部先进纺织复合材料重点实验室 天津 300387
2. 天津工业大学材料科学与工程学院 省部共建分离膜与膜过程国家重点实验室 天津 300387
3. 航天神舟飞行器有限公司 天津 300160
4. 天津工业大学纺织学院 天津 300387
5. 天津广播电视大学 天津 300191
Shear Properties of Resin Composites Reinforced with Multilayer-connected Biaxial Weft Knitted Fabric of Carbon Fibers
Xiaoyuan PEI1,2,Bo SHANG1,3,Jialu LI1,**(),Li CHEN1,Gang DING4,5
1. Composites Research Institute of Tianjin Polytechnic University & Tianjin and Education Ministry Key Laboratory of Advanced Textile Composite Materials, Tianjin 300387, China
2. School of Material Science and Engineering, Tianjin Polytechnic University & State Key Laboratory of Separation Membranes and Membrane Processes Tianjin Polytechnic University, Tianjin 300387, China
3. Aerospace Shenzhou Aerial Vehicle Ltd., Tianjin 300160, China
4. College of Textile of Tianjin Polytechnic University, Tianjin 300387, China
5. Department of the Management and Construction of Teaching Resources, Tianjin Radio & TV University,Tianjin 300191, China
引用本文:

裴晓园,尚博,李嘉禄,陈利,丁刚. 多层连接碳纤维纬编双轴向衬纱织物增强复合材料的层间剪切性能[J]. 材料研究学报, 2015, 29(8): 613-621.
Xiaoyuan PEI, Bo SHANG, Jialu LI, Li CHEN, Gang DING. Shear Properties of Resin Composites Reinforced with Multilayer-connected Biaxial Weft Knitted Fabric of Carbon Fibers[J]. Chinese Journal of Materials Research, 2015, 29(8): 613-621.

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摘要: 

研究了三层连接、四层连接、五层连接的碳纤维纬编双轴向多层衬纱织物增强复合材料在0°和90°方向的层间剪切性能, 结果表明: 随着纤维体积含量的增加其层间剪切强度提高。复合材料的层间剪切载荷-挠度曲线趋于线性变化, 达到最大值后载荷突然下降, 表现出脆性断裂的特征。层间剪切试样断口形貌的分析结果表明, 增强体结构对复合材料的层间剪切性能有显著的影响, 试样的剪切破坏形式是分层破坏, 在各织物组之间产生的裂纹较多。
关键词 ： 复合材料,  纬编双轴向多层衬纱织物,  聚合物基复合材料,  剪切性能,  失效机理    
Abstract：

Interlaminar shear properties along directions of 0 ° and 90° of resin composites reinforced with multilayer-connected biaxial weft knitted(MBWK) fabrics of carbon fibers, were investigated by shear test. The test composites involve three, four and five layer-connected MBWK fabrics respectively. It was found that the shear strength increased with the increasing fiber volume fraction. The variation of the interlaminar shear load-deflection curves tended to be linear. When the load reached the maximum value the load-deflection curve dropped suddenly, and the composites showed brittle fracture. The analysis of fracture surface showed that the structure of reinforcement has significant effect on shear properties of MBWK fabrics reinforced composites. The shear failure mode of the composites was delaminating. Meanwhile, the cracking preferred mainly along the delaminating at the interface between the fabric groups.
Key words： composites    multilayered biaxial weft knitted fabric    polymer matrix composites    shear properties    failure mechanism
收稿日期: 2014-10-24     
基金资助:* 天津市科学技术基金项目11ZCKFSF00500和天津市应用基础与前沿技术研究计划13JCYBJC16800资助。
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裴晓园
尚博
李嘉禄
陈利
丁刚

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https://www.cjmr.org/CN/10.11901/1005.3093.2014.613      或      https://www.cjmr.org/CN/Y2015/V29/I8/613

图1  MBWK织物连接结构
Type No. Ply stacking sequence Fiber volume fraction/% in 0° Fiber volume fraction/% in 90° Fiber volume fraction/%
Three layers connection 1# 0/90/0/90 17.1 17.1 34.2
2# 0/90/0/90/0 24.0 20.6 44.6
3# 0/90/0/90/0/90 26.2 26.2 52.4
Four layers connection 4# 0/90/0 17.5 14.2 31.7
5# 0/90/0/90 21.7 21.7 43.4
6# 0/90/0/90/0 28.9 25.4 54.3
Five layers connection 7# 0/90 14.6 14.6 29.2
8# 0/90/0 23.5 19.9 43.4
9# 0/90/0/90 29.4 29.4 58.8
表1  MBWK 织物增强复合材料的铺层顺序和纤维体积分数(平均值)
Curing temperature/℃ 130 150 160 180
Curing time/h 2 1 6 1
表2  MBWK 织物增强复合材料的固化条件
图2  沿0°和90°方向剪切试验的载荷-挠度曲线
Type No. Strength along 0° /MPa Strength along 90° /MPa Load along 0° /kN Load along 90° /kN
Three layers connection 1# 38.5 38.10 1.75 1.73
2# 51.64 48.74 2.38 2.17
3# 56.65 56.87 2.67 2.71
Four layers connection 4# 43.89 42.89 1.90 1.87
5# 52.39 54.15 2.31 2.40
6# 57.33 58.19 2.55 2.59
Five layers connection 7# 48.83 49.18 1.39 1.38
8# 57.55 54.89 2.49 2.12
9# 61.03 58.73 2.37 2.31
表3  MBWK织物增强复合材料的剪切强度和载荷(平均值)
图3  纤维体积含量和剪切强度之间的关系
图4  沿0°和90°方向碳纤维体积分数和剪切强度之间的关系拟合曲线
Type R2 along 0° R2 along 90°
Three layers connection 0.997 0.914
Four layers connection 0.822 0.990
Five layers connection 0.968 0.853
表4  碳纤维体积分数和剪切强度之间的关系拟合曲线的相关系数
图5  双轴向织物增强复合材料试样纵向截面图
图6  铺层数为2的五层连接纬的复合材料的层间剪切破坏图
图7  三层连接的复合材料的层间剪切破坏图
Source Dependent variable: compression strength in the direction of 0 °
Type III sum of squares df Mean square F P
Corrected model 2222.964a 8 277.870 29.542 0.000
Intercept 120473.166 1 120473.166 12808.294 0.000
Reinforced structure 69.590 1 69.590 7.399 0.010
Fiber volume fraction 1956.263 6 326.044 34.664 0.000
Error 338.611 36 9.406
Total 126279.074 45
Corrected total 2561.575 44
表5  在0°方向剪切强度主体间效应的检验
Source Dependent variable: compression strength in the direction of 0 °
Type III sum of squares df Mean square F P
Corrected model 2291.114a 8 286.389 52.404 0.000
Intercept 112583.784 1 112583.784 20600.850 0.000
Reinforced structure 214.091 1 214.091 39.175 0.010
Fiber volume fraction 2209.489 6 368.248 67.383 0.000
Error 196.740 36 5.465
Total 116861.592 45
Corrected total 2487.855 44
表6  在90°方向剪切强度主体间效应的检验
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