智能复合材料中碳纳米管纱线参数设计及其变化特征  

Parameter design and variation characteristics of carbon nanotube yarns in intelligent composites

作　　者：万振凯 李鹏 贾敏瑞 包玮琛 裘旭光 WAN Zhenkai, LI Peng, JIA Minrui, BAO Weiehen, QIU Xuguang(Information Center, Tianjin Polytechnic University, Tianjin 300387, China)

机构地区：[1]天津工业大学信息化中心,天津300387

出　　处：《纺织学报》2018年第6期58-63,共6页Journal of Textile Research

基　　金：教育部博士点基金资助课题(200800580004)

摘　　要：为将碳纳米管纱线传感器嵌入复合材料中,利用三维编织技术构建了智能三维编织复合材料。针对三维六向编织复合材料编织结构,构建了编织机携纱器运动数学模型;提出了智能复合材料嵌入碳纳米管纱线的数量、长度的计算方法;分析了碳纳米管纱线在承载下的电阻变化特征。实验证明:通过Bezier曲线计算的碳纳米管纱线长度值与实际长度的误差小于1%;当拉伸应变超过2%时,嵌入的碳纳米管纱线的应力与应变开始出现非线性;试件的加载-卸载对碳纳米管纱线的电阻变化具有一定影响,试件承受大负荷卸载后,碳纳米管纱线会产生剩余电阻。In order to embed carbon nanotube yarn sensor into composite material. Intelligent 3／｜D braided composites using 3／｜D braided technology was constructed. According to the braiding structure of three-dimensional six-direction braided composites, the mathematic model of carriers movement of braiding machine was constructed. The method of calculating the number and length of embedded carbon nanotube yarns with intelligent composites proposed. The characteristics of resistance changing for carbon nanotube yarns under the loading were analyzed. Experiments show that the error of the length and actual length of the carbon nanotube yarn calculated by the Bezier-curve is less than 1%. When the tensile strain exceeds 2%, the strain of the embedded carbon nanotube yarns begin to appear nonlinear. The loading and unloading of the specimen has some influence on the resistance change of the carbon nanotube yarn. After the load is unloaded, the carbon nanotube yarn will produce the residual resistance.

关 键 词：智能三维复合材料 碳纳米管纱线 矩阵论 BEZIER曲线 传感器应变系数 

分 类 号：TS101.2[轻工技术与工程—纺织工程]