...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ACS applied materials & interfaces >Flexible, Robust, and Multifunctional Electromagnetic Interference Shielding Film with Alternating Cellulose Nanofiber and MXene Layers
【24h】

Flexible, Robust, and Multifunctional Electromagnetic Interference Shielding Film with Alternating Cellulose Nanofiber and MXene Layers

机译：具有交替纤维素纳米纤维和MXENE层的柔性，鲁棒和多功能电磁干扰屏蔽膜

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

Flexible, lightweight, robust, and multifunctional characteristics are greatly desirable for next-generation wearable electromagnetic interference (EMI) shielding materials. In this work, an alternating multilayered structure with robust polymer frame layers and directly contacted conducting layers was designed to prepare high-performance EMI films. Especially, the multilayered films containing alternating cellulose nanofiber (CNF) layers and MXene layers are fabricated via a facile and efficient alternating vacuum 100 filtration-approach. Deriving from the mechanical frame effect acted by CNF layers in, which is capable of preventing the nanosized "zigzag" crack in MXene layers from growing to the whole film, the alternating multilayered film (CNF@MXene) revealed the improved mechanical strength (112.5 MPa) and toughness (2.7 MJ m(-3 )) compared to both freestanding MXene film and homogeneous CNF/MXene film. Meanwhile, the directly contacted MXene layers resulted in the increased electrical conductivity from 2 (homogeneous MXene film) to 621-82 S m(-1)(CNF@MXene films). In conjunction with the extra "reflection-absorption-zigzag reflection" mechanism among the alternating multilayers, CNF@MXene films demonstrated an exceptional EMI shielding effectiveness of similar to 40 dB in the X-band and K-band and high specific shielding effectiveness up to 7029 dB cm(2) g(-1) at a thickness of only 0.035 mm. Besides, the excellent mechanical flexibility ensured the stable EMI shielding and electrical properties, which can withstand the folding test more than 1000 times without obvious reduction. Moreover, the excellent electrical conductivity endows the alternating multilayered film with an outstanding and steady Joule heating performance, which could reach more than 100 degrees C at only 6 V impressed voltage to within 10 s. As a result, our alternating multilayered film with reinforced EMI shielding and Joule heating performance is promising in the next-generation intelligent protection devices applying in cold and complex practical environments.
机译：灵活，轻巧，稳健和多功能特性对于下一代可穿戴电磁干扰（EMI）屏蔽材料非常适合。在这项工作中，设计了具有鲁棒聚合物框架层和直接接触导电层的交替的多层结构以制备高性能EMI膜。特别地，含有交替纤维素纳米纤维（CNF）层和MxENE层的多层膜通过容易和有效的交替的真空100过滤 - 方法制造。从CNF层作用的机械框架效果中，能够防止蒙薄层中的纳米化“锯齿形”裂缝生长到整个膜，交替的多层膜（CNF @ MXENE）显示出改善的机械强度（112.5MPa与独立式蒙蛋白膜和均相CNF / mxENE膜相比，韧性（2.7MJ m（-3））。同时，直接接触的偏烯层导致从2（均匀MxENE膜）到621-82 s m（-1）（CNF @ mxene薄膜）增加的电导率增加。结合交替多层的额外“反射吸收 - 锯齿反射”机制，CNF @ MXENE薄膜在X波段和K波段中显示出类似于40dB的特殊EMI屏蔽效果，以及高度的特定屏蔽效果7029dB cm（2）g（-1）的厚度仅为0.035mm。此外，优异的机械灵活性确保了稳定的EMI屏蔽和电气性能，可承受折叠测试超过1000倍而无明显减少。此外，优异的导电性赋予交替的多层薄膜，具有出色和稳定的焦耳加热性能，其在10秒内仅达到超过100摄氏度。因此，我们的交替的多层薄膜具有增强的EMI屏蔽和焦耳热性能在下一代智能防护装置中具有良好的智能和复杂的实用环境。

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