CNTs/TDE85环氧复合材料的热物理和力学性能

复合材料科学与工程 ›› 2015, Vol. 0 ›› Issue (7): 33-38.

CNTs/TDE85环氧复合材料的热物理和力学性能

杨乔馨¹, 刘玲^1*, 王晓蕾²

1.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;
2.上海复合材料科技有限公司,上海 201112

收稿日期:2015-03-16 出版日期:2015-07-28 发布日期:2021-09-13
通讯作者: 刘玲(1973-),女,博士,教授,主要从事复合材料与结构、纳米复合材料的研究,lingliu@tongji.edu.cn。
作者简介:杨乔馨(1990-),女,硕士研究生,主要从事碳纳米管复合材料的研究。
基金资助:
国家自然科学基金(11172211)

THERMAL PHYSICS AND MECHANICAL PROPERTIES OF CNTs/TDE85 EPOXY COMPOSITES

YANG Qiao-xin¹, LIU Ling^1*, WANG Xiao-lei²

1. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China;
2. Shanghai Composite Material Science and Technology Co., Ltd., Shanghai 201112, China

Received:2015-03-16 Online:2015-07-28 Published:2021-09-13

摘要/Abstract

摘要： 将功能化碳纳米管(CNTs)通过超声和离心分散方法添加到TDE85环氧树脂中,制备出了CNTs质量含量不同的CNTs/TDE85复合材料;开展了CNTs含量对其电导率、热导率以及力学性能影响规律的实验研究;同时还采用DM软件对该复合材料的电导率和热导率进行了预测分析。结果表明,CNTs/TDE85复合材料电导率与热导率对应CNTs含量的渗流阈值均为0.2wt%左右,当CNTs含量为0.5wt％,相比纯环氧试样,电导率提高了6个数量级,热导率从0.180W·(m·K)^-1提高到了0.211W·(m·K)^-1;CNTs含量为0.2%~2%的试样其电导率为10^-7~10^-5S·cm^-1数量级,均具有良好的抗静电能力。CNTs在复合材料中的有效长径比在10~100,与实验结果吻合。添加0.5wt%含量CNTs时,玻璃化转变温度(Tg)、弯曲强度和模量分别提高了约6%、47％和5％。

关键词: 碳纳米管, 环氧树脂, 电导率, 热导率, 力学性能

Abstract: CNTs were added into TDE85 epoxy and formed CNTs/TDE85 composites with various CNTs mass fraction by the aid of ultrasonic and centrifugal dispersion method. Electrical and thermal conductivity, and mechanical properties of the composites were measured. Results show that the electrical and thermal conductivity were improved by 10⁶ times and 17.2%, respectively, with a CNTs weight loading of 0.5%. The obtained percolation threshold was nearly 0.2% for the CNTs/TDE85 composites. Prediction from DM software have shown that the results with aspect ratio of 10~100 was coherent with the experimental result. The glass transition temperature (Tg), flexural strength and modulus were improved by 6%, 47% and 5%, respectively, with CNTs loading of nearly 0.5%.

Key words: carbon nanotubes, epoxy, electrical conductivity, thermal conductivity, mechanical properties

中图分类号:

杨乔馨, 刘玲, 王晓蕾. CNTs/TDE85环氧复合材料的热物理和力学性能[J]. 复合材料科学与工程, 2015, 0(7): 33-38.

YANG Qiao-xin, LIU Ling, WANG Xiao-lei. THERMAL PHYSICS AND MECHANICAL PROPERTIES OF CNTs/TDE85 EPOXY COMPOSITES[J]. COMPOSITES SCIENCE AND ENGINEERING, 2015, 0(7): 33-38.

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