Electrical Properties of an Ultralight Conductive Carbon Nanotube/Polymer Composite Foam Upon Compression

Electrical Properties of an Ultralight Conductive Carbon Nanotube/Polymer Composite Foam Upon Compression
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超轻导电碳纳米管/聚合物复合泡沫压缩后的电性能

DOI:
10.1080/03602559.2011.639327
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发表时间:
2012-01
期刊:
Polymer - Plastics Technology and Engineering
影响因子:
--
通讯作者:
Li, Zhong-Ming
Li, Zhong-Ming
中科院分区:
其他
文献类型:
--
作者:
Dai, Kun;Ji, Xu;Xiang, Zhi-Dong;Zhang, Wei-Qin;Tang, Jian-Hua;Li, Zhong-Ming

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研究了超轻导电碳纳米管/聚合物复合泡沫材料在压缩过程中的电性能变化。发现体积电阻率和应变的急剧增加是由相同的微观结构变化产生的,即,泡沫支柱的损坏。即使应变增加到高达50%,最终电阻率仍然保持稳定。在恒定的外加机械力作用下,泡沫体的体积电阻率基本保持不变。碳纳米管接触形成的导电网络的稳定微观结构和样品核心区域的高耐久性赋予了超轻导电泡沫更稳定的电性能。
The variations of electrical property of an ultralight conductive carbon nanotube/polymer composite foam upon compression were investigated. It was found the sharp increase of volume resistivity and strain was generated by the same microstructural change, i.e., the damage of foam struts. Even the strain was increased to as high as 50%, the ultimate resistivity remained stable. Volume resistivity of the foam kept almost changeless under an invariant external mechanical field. The stable microstructure of the conductive network formed by contact of CNTs and the high endurance of samples' core regions endow the ultralight conductive foam with much stable electrical properties.
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