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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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用聚合填充法合成导电型聚烯烃复合料 总被引:2,自引:0,他引:2
提出了制备导电型聚烯烃复合料的新工艺-聚合填充法;综述了导电填料的活化方法、聚合填充导电复合料的制备、结构、性能;并对聚合填充导电复合料与机械掺混合料的性能进行了比较。 相似文献
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导电聚合物复合材料技术进展 总被引:9,自引:1,他引:8
本文介绍了导电聚合物复合材料的种类及其特性,重点讨论了填充和共混型导电聚合物复合材料的制备方法、研究现状及最新进展,并且展望了它们的发展方向和应用前景。 相似文献
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导电复合橡胶用导电填料的应用研究进展 总被引:2,自引:0,他引:2
对导电复合橡胶用导电填料如炭系、金属系、颗粒表面镀金属等的种类、性质等因素对复合橡胶材料导电率的影响及应用进行了综述。也对采用新型的填料即本征导电聚合物主要是聚苯胺填充制备导电复合橡胶的研究进展进行了综述。炭系是目前制备导电复合橡胶主要的导电填料,但有污染,不适合制备有颜色要求的导电材料,金属系、颗粒表面镀金属的比重大,在聚合物中分散较困难,也不太适合于有比重要求的制品。本征导电聚合物导电填充填料是制备导电复合橡胶发展的一个重要方向,可以解决不熔难溶造成的在聚合物中分散性差的问题。 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
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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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Thermal management is critical to the performance, lifetime, and reliability of electronic devices. With the miniaturization, integration and functionalization of electronics and the emergence of new applications such as light emitting diodes, thermal dissipation becomes a challenging problem. Addressing this challenge requires the development of novel polymer-based composite materials with enhanced thermal conductivity. In this review, the fundamental design principles of highly thermally conductive composites were discussed. The key factors influencing the thermal conductivity of polymers, such as chain structure, crystallinity, crystal form, orientation of polymer chains, and orientation of ordered domains in both thermoplastics and thermosets were addressed. The properties of thermally conductive fillers (carbon nanotubes, metal particles, and ceramic particles such as boron nitride or aluminum oxide) are summarized at length. The dependence of thermal conductivity of composites on the filler loading, filler aggregate morphology and overall composite structure is also discussed. Special attention is paid to recent advances in controlling the microstructure of polymer composites to achieve high thermal conductivity (novel approaches to control filler orientation, special design of filler agglomerates, formation of continuous filler network by self-assembly process, double percolation approach, etc.). The review also summarizes some emerging applications of thermally conductive polymer composites. Finally, we outline the challenges and outlook for thermally conductive polymer composites. 相似文献