碳纳米纤维/环氧树脂复合材料损伤自监测性能研究
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- 英文论文题名：DAMAGE SELT-MONITORING OF CARBON NANOFIBER/EPOXY RESIN COMPOSITES
- 论文作者：王言磊 ; 常瑞娟
- 英文论文作者：WANG Yan-lei ; CHANG Rui-juan ; State Key Laboratory of Coastal and Offshore Engineering ; Dalian University of Technology
- 年：2016
- 作者机构：大连理工大学海岸和近海工程国家重点实验室;
- 论文关键词：CNFs ; 环氧树脂 ; 电阻 ; 自监测
- 英文论文关键词：CNFs ; epoxy resin ; resistance ; self-monitoring
- 会议召开时间：2016-09-22
- 会议录名称：第二十一届全国玻璃钢/复合材料学术年会论文集（《玻璃钢/复合材料》2016增刊）
- 语种：中文
- 分类号：TQ323.5;TB332
- 学会代码：EUGQ
- 会议名称：第二十一届全国玻璃钢/复合材料学术年会
- 会议地点：中国黑龙江哈尔滨
- 主办单位：中国硅酸盐学会玻璃钢分会
- 学会名称：中国硅酸盐学会
- 页数：4
- 文件大小：450k
- 原文格式：O
- 会议级别：全国
摘要
使用机械搅拌和超声水浴相结合的方法将不同掺量的碳纳米纤维均匀分散在环氧树脂中,制备出碳纳米纤维/环氧树脂复合材料。通过电阻测量法研究了该种复合材料在单调拉伸、等幅循环拉伸和递增循环拉伸下的自感知特性及其对环氧树脂基体破坏的自监测能力。试验结果表明,在单轴拉伸荷载下随着材料内部损伤的产生,该复合材料中CNFs网络呈现出不同的导电机制,材料破坏时电阻值会突增,可提供有效的预警作用;在循环拉伸荷载下该复合材料应变-电阻响应的重复性良好;在递增循环拉伸荷载下材料本体电阻值不断增大,表明材料内部损伤的不断积累。以上试验结果证实了该两相复合材料可满足智能材料损伤自监测的要求。
The different contents of carbon nanfibers(CNFs) were dispersed uniformly in an epoxy resin using the method of combing mechanical agitation and ultrasonic water bath to prepare the CNFs/EP composites.Studing their property of self-sensing and the ability of damage self-testing in the matrix under quasi-static single tension,constant amplitude cyclic tension and incremental cyclic loading using electrical resiatance measurement.The results showed that CNFs network presents different conduction mechanism with the emergence of internal material damage in the loading process,a sharp increase in resistance with the destruction of the material,providing an effective early warning for damage;the response of strain/resistivity of the material under constant amplitude cyclic loading are good reproducibility;the increaing of bady resistance in incremental cyclic loading show that the accumulation of material internal injury.These results confirmed that the two-phase composite material meet the requirements of smart materials for self-monitoring.
The different contents of carbon nanfibers(CNFs) were dispersed uniformly in an epoxy resin using the method of combing mechanical agitation and ultrasonic water bath to prepare the CNFs/EP composites.Studing their property of self-sensing and the ability of damage self-testing in the matrix under quasi-static single tension,constant amplitude cyclic tension and incremental cyclic loading using electrical resiatance measurement.The results showed that CNFs network presents different conduction mechanism with the emergence of internal material damage in the loading process,a sharp increase in resistance with the destruction of the material,providing an effective early warning for damage;the response of strain/resistivity of the material under constant amplitude cyclic loading are good reproducibility;the increaing of bady resistance in incremental cyclic loading show that the accumulation of material internal injury.These results confirmed that the two-phase composite material meet the requirements of smart materials for self-monitoring.
引文
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[3]Huigang Xiao,Gangbing Song,Hui Li,et al.Improved Tensile Properties of Carbon Nanotube Modified Epoxy and Its Continuous Carbon Fiber Reinforced Composites[J].Polymer Composites,2013,62(15):1993-1998.
[4]Sun L H,Ounaies Z,Gao XL,et al.Preparation,characterization and modeling of carbon nanofiber/epoxy nanocomposites[J].Journal of Nanomaterials,2011,12.
[5]乐正想.碳纳米纤维复合材料电阻—应变传感性能研究[D].武汉:武汉理工大学.2007.
[6]Tetsuo Yasuoka,Yoshinobu Shimamura,Akira Todoroki.Electrical Resistance Change under Strain of CNF/Flexible-Epoxy Composite[J].Advanced Composite Materials,2010,19:123-138.
[7]Kenneth J Loh,Junhee Kim,Jerome P Lynch,et al.Multifunctional layer-by-layer carbon nanotube-polyelectrolyte thin films for strain and corrosion sensing[J].Smart Materials And Structures,2007,16:429-438.