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填充型导电高分子材料的研究进展 总被引:6,自引:0,他引:6
简要介绍了导电聚合物的分类及特点.重点论述了填充型导电高分子材料的分类、导电机理以及提高其导电稳定性的方法,并对填充型导电复合材料的发展方向提出了建议。 相似文献
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导电高分子材料研究进展 总被引:5,自引:0,他引:5
综述导电高分子材料的发展及应用。介绍导电高分子材料的分类,复合型及结构型导电高分子材料的导电机理,以及它们在膜分离技术、微波焊接、防腐、电致变色器件等方面的应用。并指出了导电高分子材料目前的研究趋势。 相似文献
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炭黑对复合型导电高分子材料电性能影响 总被引:1,自引:0,他引:1
阐述了炭黑填充型导电高分子复合材料的导电机理,讨论了炭黑基本物性、填充量以及分散状态对材料导电性的影响,并探讨了影响炭黑分散状态的因素。 相似文献
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以逾渗理论、隧道效应理论和场致发射效应理论为例分析介绍了填充复合型导电高分子材料的导电机理;以炭黑、碳纳米管、石墨烯填充环氧树脂复合材料为例,综述了影响复合材料导电性能的主要因素,并重点介绍了相关研究人员在改善碳系材料分散性、降低复合材料渗流阙值等方面的研究进展。 相似文献
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可加工导电高分子材料的研究进展 总被引:1,自引:0,他引:1
综述了可加工导电高分子的研究进展,着重叙述了制备可溶导电高分子及导电高分子复合材料的方法,并介绍了加工工艺对结构和性能的影响。 相似文献
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高分子基导电复合材料非线性导电行为及其机理(Ⅰ)——导电通道理论 总被引:1,自引:0,他引:1
简述了高分子基导电复合材料非线性导电行为的概念,详细讨论了高分子基导电复合材料非线性导电行为的机理——导电通道理论,并分析比较了统计逾渗模型、界面热力学模型、有效介质理论等不同理论模型之间的适用范围及其优点与不足。 相似文献
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高分子基导电复合材料非线性导电行为及其机理(Ⅱ)量子力学隧道效应理论 总被引:1,自引:0,他引:1
简述了高分子基导电复合材料非线性导电行为的概念,详细讨论了高分子基导电复合材料非线性导电行为的机理——量子力学隧道效应理论及其它理论。高分子基导电复合材料的非线性导电行为是几种效应的综合过程:当导电填料的体积分数较小时,导电粒子无法形成导电通道,此时只有量子力学隧道效应在起作用;当导电填料的体积分数较大时,复合材料的导电行为是导电通道和隧道效应共同作用的结果。 相似文献
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Semiconductive polymer shielding layers of power cable require stable volume resistivity to protect the insulation layer from stress enhancements when carbon black (CB)/polymer composite undergoes thermal cycles. For the CB-filled polymer composites, CB would often re-aggregate when temperature is close to the melting point of polymer matrix, so that the conductive network would be destroyed. Re-distribution of CB and re-formation of conductive CB network under thermal cycles might be the main reason for the instability of volume resistivity. In this work, the re-aggregation of CB in the CB/polymer composites was disclosed. Besides, a small amount of multi-walled carbon nanotubes (MWNTs) was employed as cofiller with CB to improve the stability of volume resistivity of the polymer composites under thermal cycles. The total weight fraction of conductive fillers (CB or CB cofilled with MWNTs) was set as 35 wt%. Compared with the polymer composites loaded with CB solely, the volume resistivity of the composites filled with CB-MWNTs was much more stable with changing temperature. This can be attributed to the enhancement of conductive networks when the MWNTs are employed as second conductive filler. 相似文献
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The rise of miniaturized, integrated, and functional electronic devices has intensified the need for heat dissipation. To address this challenge, it is necessary to develop novel thermally conductive polymer composites as packaging materials. In this paper, a number of factors for the construction and design of thermally conductive polymers are concluded. Special attention is focused on the analysis and comparison of the thermally conductive composites prepared by various fillers or strategies to provide guidelines and references for future design of composite materials. The current commonly used preparation strategies of thermally conductive polymer are summarized, such as using a variety of fillers, vacuum filtration, template method, and so on. The challenges of thermally conductive polymer composites are finally sketched. This review can inspire the design of polymer composites with brilliant thermal conductivity. 相似文献