• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Facile preparation of asymmetric Ni/PVC film with controlled structure: Application as a high-performance EMI shielding material
【24h】

Facile preparation of asymmetric Ni/PVC film with controlled structure: Application as a high-performance EMI shielding material

机译：易于制备结构可控的不对称Ni / PVC膜：用作高性能EMI屏蔽材料

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Controlling the spatial configuration of conductive fillers in thin composites by a facile strategy is critical to widely commercial use these materials for electromagnetic interference (EMI) shielding applications. In this work, a series of free-standing thin Ni/polyvinyl chloride (PVC) films with the same composition just systematically varied Ni particles dispersion states was prepared by solution casting method. The relationships between the structure and properties were also investigated. Ni particles motion was governed by evaporation and sedimentation during solvent evaporation with the presence of soluble PVC influencing the casting solution viscosity. The experimental results fit the 1D model. In dilute casting system, the effective concentration of Ni particles in the lower part of the film was significantly enhanced and a dense, closed packed conductive network was formed. This special distribution of Ni particles was found to play a key role in the corresponding properties. Compared to the uniform film, the film which was fabricated from the casting solution containing 0.03 g/mL PVC, exhibited much better electrical conductivity and EMI shielding performance. Furthermore, the detailed study shows that the obtained thin film exhibited excellent EMI SE values per unit film thickness of 200 dB/mm. Meanwhile, the resultant films possessed thermal conductivity of 0.32 approximate to 0.59 W/(mK) depended on whether a Ni continuous network formation throughout the whole film in the temperature range of 30 approximate to 60 degrees C. Our study results pave thus the way for scalable fabrication of substrate-free systems that have advantages in multifunctional complex devices. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42560.
机译：通过简便的策略控制薄复合材料中导电填料的空间构型对于将这些材料广泛用于电磁干扰（EMI）屏蔽应用具有至关重要的意义。在这项工作中，通过溶液流延法制备了一系列具有相同组成，只是系统地改变了Ni颗粒分散状态的独立Ni /聚氯乙烯（PVC）薄膜。还研究了结构和性能之间的关系。 Ni粒子的运动由溶剂蒸发过程中的蒸发和沉降控制，可溶性PVC的存在会影响流延溶液的粘度。实验结果符合一维模型。在稀流延系统中，膜下部镍颗粒的有效浓度显着提高，并形成了致密的，密堆积的导电网络。发现镍颗粒的这种特殊分布在相应的性能中起关键作用。与均匀薄膜相比，由包含0.03 g / mL PVC的流延溶液制成的薄膜具有更好的导电性和EMI屏蔽性能。此外，详细研究表明，所获得的薄膜每单位膜厚200 dB / mm表现出极好的EMI SE值。同时，所得薄膜的热导率为0.32，约为0.59 W /（mK），取决于在30摄氏度至60摄氏度的温度范围内整个薄膜上是否连续形成Ni连续网络。可扩展制造的无基板系统，在多功能复杂设备中具有优势。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，42560。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号