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电磁屏蔽用导电涂料的研制 总被引:6,自引:0,他引:6
叙述了一种低成本、高抗氧化铜粉填料的制备方法。以及用该填料制造的导电涂料的组成、优良的耐老化性能和很好的屏蔽效果,并展望了铜粉填料的应用前景。 相似文献
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Conductive Papers Containing Metallized Polyester Fibers for Electromagnetic Interference Shielding 总被引:7,自引:0,他引:7
Conductive papers were developed for preventing or reducing electromagnetic interference (EMI), and their shielding efficiency was evaluated. This type of conductive paper consists of wood pulp, synthetic pulp and metallized polyester fibers (0.5–2.0 mm long and 14 m in diameter) whose surfaces are coated with nickel alone (Ni-PET) or copper and nickel double layers (Ni-Cu-PET) by electroless plating. In this report, the effect of the characteristics of these metallized fibers, such as their conductivity, geometry and the concentration of fibers in paper, which lead to high efficiency for shielding effectiveness is discussed. For instance, one of the conductive papers (80 g/m2) which was prepared by mixing 40% Ni-Cu-PET and 60% synthetic polyethylene pulp showed over 40 dB shielding effectiveness between 10 MHz and 1 GHz. 相似文献
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屏蔽电磁波干扰聚合物材料的研究进展 总被引:6,自引:0,他引:6
本文研究屏蔽电磁波干扰的方法及其屏蔽效果,着重讨论了导电涂料和导电塑料等屏蔽电磁波干扰聚合物材料的种类、特性、应用和发展。 相似文献
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电磁屏蔽材料及导电填料的研究进展 总被引:7,自引:1,他引:7
比较了电磁屏蔽涂料用各类填料的优缺点,较全面地介绍了铜系及镍系填料的性能改进研究进展及各种改进方法的机理;并介绍了结构型复合电磁屏蔽材料及填充型复合电磁屏蔽材料的制造方法及其优缺点。 相似文献
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导电电磁屏蔽塑料研究新进展 总被引:1,自引:0,他引:1
介绍了电磁屏蔽的基本理论,重点综述了3类主要的导电塑料即:表层导电型复合塑料、填充型复合塑料和本征导电高分子材料的研究应用现状,介绍了各类导电高分子电磁屏蔽材料的特点,并对其发展趋势做了展望。 相似文献
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Shielding materials are becoming increasingly important, but present materials suffer from either insufficient mechanical stability or limited shielding properties. In this study, 3D flexible copper sulfide (CuxS)/polyacrylonitrile (PAN) nanofiber mats are developed via air spinning followed by chemical reaction with copper salt. The CuxS/PAN nanofiber mats exhibit an ultra‐lightweight density of 0.044 g cm?3 and a thickness of 0.423 mm. Stable electromagnetic interference (EMI) shielding effectiveness (SE) (29–31 dB) of the CuxS/PAN composite is achieved in the frequency range of 500–3000 MHz. EMI SE per unit surface density of 16 655.92 dB cm2 g?1 is several orders of magnitude higher than most copper sulfide containing EMI shielding materials reported in literature. In addition, the introduction of the CuxS improves the thermal stability and launderability of the PAN mats giving the mats thermal, mechanical, and aqueous stability. Finally, the shielding mechanism of the CuxS/PAN nanofiber mats for electromagnetic waves is proposed 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