电热效应对碳纳米管修饰碳纤维复合材料剪切性能的影响

doi:10.19936/j.cnki.2096-8000.20210328.013

复合材料科学与工程 ›› 2021, Vol. 0 ›› Issue (3): 82-87.DOI: 10.19936/j.cnki.2096-8000.20210328.013

电热效应对碳纳米管修饰碳纤维复合材料剪切性能的影响

王炳琛, 刘玲^*

同济大学航空航天与力学学院复合材料与结构研究所,上海200092

收稿日期:2020-07-10 出版日期:2021-03-28 发布日期:2021-04-30
通讯作者: 刘玲(1973-),女,博士,教授,主要从事复合材料方面的研究,lingliu@tongji.edu.cn。
作者简介:王炳琛(1995-),男,硕士,主要从事复合材料方面的研究。
基金资助:
中国国家自然基金(11772233)

INFLUENCE OF ELECTROTHERMAL EFFECT ON THE SHEAR PROPERTIES OF CARBON NANOTUBE MODIFIED CARBON FIBROUS COMPOSITES

WANG Bing-chen, LIU Ling^*

School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China

Received:2020-07-10 Online:2021-03-28 Published:2021-04-30

摘要/Abstract

摘要： 随着在航空航天领域的广泛应用,碳纤维增强树脂基复合材料(CFRPs)既要求可以作为结构件,也要求具有导热导电等功能特性。因此,CFRPs往往面临着复杂的多场耦合环境,其中电热耦合是伴随着高导电CFRPs的应用而产生的。为分析CNTs的加入对CFRPs电热性能和剪切性能的影响,本文制备了碳纳米管(CNT)多孔薄膜,将其引入[±45°₂]_s层合板的±45°界面,研究了CNT薄膜对层合板面内电导率以及电热效应对面内剪切性能的影响,并与相应的温度载荷情况进行了对比。研究表明,CNT薄膜的引入使CFRPs电导率提升了65%~180%,使表面温度提升了10.8%~29.5%,其剪切强度、模量也均有所提高,同时,温度的升高可以提高CFRPs的力学性能,但CNTs改性CFRPs后这一现象并不明显。这充分表现出CNTs薄膜不仅可以改善CFRPs的电热性能,还可以对层间力学性能起到充分的增强作用。

关键词: 电热效应, 碳纳米管(CNTs), CFRP, 电导率, 复合材料

Abstract: With the wide application in the aerospace engineering, carbon fiber reinforced resin matrix composites (CFRPs) are required not only to be used as structural parts, but also have thermal and electrical conductivity and other functional characteristics. Therefore, CFRPs often face a complex multi-field coupling environment, in which electrothermal coupling is accompanied by the application of highly conductive CFRPs. To analyze the influence of the introduction of CNTs on the electrothermal and shear properties of CFRPs, a porous film of carbon nanotube (CNTs) was prepared and introduced into the ±45° interface of the [±45°₂]_s laminate in this paper. Studies have shown that the introduction of CNTs films has increased the conductivity of CFRPs by 65%~180%, the surface temperature has increased by 10.8%~29.5%, and the shear strength and modulus have also been improved. At the same time, the increase of temperature can improve the mechanical properties of CFRPs, but this phenomenon is not obvious in CFRPs with CNTs films. This result shows that the CNTs films can not only improve the electrical and thermal properties of CFRPs, but also enhance the interlayer mechanical properties.

Key words: electrothermal effect, carbon nanotubes (CNTs), CFRP, conductivity, composites

中图分类号:

TB332

王炳琛, 刘玲. 电热效应对碳纳米管修饰碳纤维复合材料剪切性能的影响[J]. 复合材料科学与工程, 2021, 0(3): 82-87.

WANG Bing-chen, LIU Ling. INFLUENCE OF ELECTROTHERMAL EFFECT ON THE SHEAR PROPERTIES OF CARBON NANOTUBE MODIFIED CARBON FIBROUS COMPOSITES[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(3): 82-87.

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电热效应对碳纳米管修饰碳纤维复合材料剪切性能的影响

INFLUENCE OF ELECTROTHERMAL EFFECT ON THE SHEAR PROPERTIES OF CARBON NANOTUBE MODIFIED CARBON FIBROUS COMPOSITES

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