Mechanical and electrical properties of a MWNT/epoxy composite
Mechanical and electrical properties of a MWNT/epoxy composite
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DOI：
10.1016/s0266-3538(02)00129-x
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发表时间：
2002-01-01
影响因子：
9.1
通讯作者：
Bai, JB
中科院分区：
文献类型：
--
作者：
Allaoui, A;Bai, S;Bai, JB
制备了多壁碳纳米管/环氧树脂复合材料。通过选择一种过老化的固化剂，得到了一种相对柔软和延展性较好的橡胶状环氧树脂基体。这使得可以评估纳米管添加对整个应力-应变曲线的影响，直到高应变水平。研究了纳米管含量对复合材料力学性能和电学性能的影响。复合材料的杨氏模量和屈服强度分别为1和4 wt.%的两倍和四倍纳米管，与纯树脂基质样品相比。复合材料样品的电导率测量表明，绝缘体到导体的转变发生的纳米管浓度为0.5%和1重量%之间。(C)2002年由Elsevier Science Ltd.出版
Multi-walled carbon nanotube/epoxy resin composites have been fabricated. By choosing an over-aged hardener, relatively soft and ductile matrix, a rubbery epoxy resin, has been obtained. This made possible to evaluate the effect of nanotube addition on the whole stress-strain curve up to high strain level. The mechanical and electrical properties of the composite with different weight percentages of nanotubes have been investigated. The Young's modulus and the yield strength have been doubled and quadrupled for composites with respectively 1 and 4 wt.% nanotubes, compared to the pure resin matrix samples. Conductivity measurements on the composite samples showed that the insulator-to-conductor transition took place for nanotube concentration between 0.5% and 1 wt.%. (C) 2002 Published by Elsevier Science Ltd.