Ultralight conductive carbon-nanotube-polymer composite
Ultralight conductive carbon-nanotube-polymer composite
复制标题
超轻导电碳纳米管聚合物复合材料
DOI：
10.1002/smll.200600348
复制
发表时间：
2007-03-01
期刊：
影响因子：
13.3
通讯作者：
Xiang, Zhi-Dong
中科院分区：
文献类型：
--
作者：
Xu, Xiang-Bin;Li, Zhong-Ming;Xiang, Zhi-Dong
导电聚合物包括本质导电聚合物（ICPs）和导电聚合物复合材料（CPCs）在电子工业中得到了广泛的应用，[1-10]在电磁干扰（EMI）屏蔽，[4,5]静电放电（ESD）保护，[6,7]防雷飞机面板，[5]致动器，[8,9]和光电导体等领域减轻重量对电子设备，特别是飞机、宇宙飞船和汽车上的电子设备具有重要意义，因为它可以节省材料和能源，也更容易操作。通过掺入气体发泡通常是减少材料重量或密度的有效方法。不幸的是，由于icp具有较差的亲achtungtrennability和机械性能，因此几乎不可能发泡。另一种方法是在开孔吹制塑料的内表面涂上一层icp，可以制造轻质导电材料。[11,12]然而，界面结合弱、生产效率低、开孔吹制塑料有限等问题严重限制了该方法的应用。相比之下，基于cpc的泡沫具有多种结构设计、良好的化学稳定性、低成本和易于在大范围内调节电导率等优点。然而，cpc泡沫的制造遇到了很大的实际挑战，因为多孔结构的性质限制了有效导电网络的形成。这可能就是为什么在公开文献中没有报道传统碳形式（炭黑，石墨等）填充具有足够导电性的聚合物泡沫的原因
Conductive polymers including intrinsically conductive polymers (ICPs) and conductive polymer composites (CPCs) have found wide application in the electronics industry,[1–10] in areas such as electromagnetic interference (EMI) shielding,[4, 5] electrostatic discharge (ESD) protection,[6, 7] lightning-protection aircraft panels,[5] actuators,[8, 9] and photoconductors.[10] A reduction in weight is of great significance for electronic devices, especially those in aircraft, spacecraft, and automobiles, because it leads to savings in materials and energy, as well as easier manipulation. Foaming through the incorporation of gas is usually an effective way to reduce the weight or density of materials. Unfortunately, ICPs are nearly impossible to foam due to their poor pro-ACHTUNGTRENNUNGcessability and mechanical properties. An alternative method, in which a layer of ICPs is coated on the inner surfaces of an open-cell blown plastic, can create lightweight conductive materials.[11, 12] However, the weak interfacial bonding, low production efficiency, and limited open-cell blown plastics significantly restrict the applications of this method. By contrast, CPC-based foams have great advantages, such as varied structure design, good chemical stability, low cost, and easy tuning of electrical conductivity over a wide range. However, fabrication of CPC-based foams encounters a great practical challenge, since the nature of the porous structure limits the formation of an effective conductive network. This might be the reason why no conventional carbon form (carbon black, graphite, etc.) filled polymer foam with adequate electrical conduction has been reported in the open literature.[13]