基于FFT方法的碳纳米管增强复合材料微尺度力电行为研究  

Study on Micro-Scale Force and Electrical Behaviors of Carbon Nanotube Reinforced Composites Based on FFT Method

作　　者：赵一帆 柯弈名 王跃丹[1] 李沐芳[1] 王栋[1] 贾康昱 ZHAO Yi-fan;KE Yi-ming;WANG Yue-dan;LI Mu-fang;WANG Dong;JIA Kang-yu(Key Laboratory of Textile Fibers and Products,Ministry of Education,Wuhan Textile University,Wuhan 430200,China)

机构地区：[1]武汉纺织大学纺织纤维及制品教育部重点实验室,湖北武汉430200

出　　处：《塑料科技》2023年第7期7-12,共6页Plastics Science and Technology

基　　金：国家自然科学基金资助项目(U20A20257);国家重点研发计划项目(2022YFB3805803);湖北省教育厅科研计划项目(Q20211701;T2021007)。

摘　　要：为揭示碳纳米管空间非均匀分布效应对碳纳米管增强复合材料微尺度力学、电学性能的影响规律,采用快速傅里叶变化(FFT)方法,建立了FFT微尺度力-电耦合模型,并与文献中实验数据与理论计算结果进行对比,验证该模型的高效性、准确性和适用性。探究一维纳米导电填料(1D-NCF)的弯曲、取向等空间非均匀分布对复合材料力学、电学性能的影响。结果表明:当1D-NCF体积分数≤2%,等效电导率随着1D-NCF团聚率的增加先减小后增大,随最大取向角的增加而增加。当1D-NCF体积分数≥3%,饱和等效电导率随着团聚率、最大取向角的增加而减小。研究可为纤维基柔性力学传感材料的优化设计及构筑提供参考。In order to reveal the influence of spatial non-uniform distribution effect of carbon nanotubes on micro-scale mechanical and electrical properties of carbon nanotube reinforced composites,the fast Fourier transform(FFT)method was used to establish FFT micro-scale mechanical-electrical coupling model.Compared with the experimental data and theoretical calculation results in the literature,the efficiency,accuracy and applicability of the model were verified.The effects of spatial non-uniform distribution of bending and orientation of one-dimensional nano-conductive fillers(1D-NCF)on the mechanical and electrical properties of composites were investigated.The results show that when the volume fraction of 1D-NCF is≤2%,equivalent conductivity decreases first and then increases with the increase of 1DNCF agglomeration rate,and increases with the increase of maximum orientation angle.When the volume fraction of 1DNCF is≥3%,saturated equivalent conductivity decreases with the increase of agglomeration rate and maximum orientation angle.The study provides a reference for optimal design and construction of fiber-based flexible mechanical sensing materials.

关 键 词：碳纳米管复合材料 快速傅里叶变化方法 力-电耦合模型 力学性能 电学性能 

分 类 号：TB332[一般工业技术—材料科学与工程] TB303