Selective electromagnetic interference shielding performance and superior mechanical strength of conductive polymer composites with oriented segregated conductive networks
Selective electromagnetic interference shielding performance and superior mechanical strength of conductive polymer composites with oriented segregated conductive networks
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具有定向隔离导电网络的导电聚合物复合材料的选择性电磁干扰屏蔽性能和优异的机械强度
DOI：
10.1016/j.cej.2019.05.074
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发表时间：
2019-10
影响因子：
15.1
通讯作者：
Li Zhong Ming
中科院分区：
文献类型：
--
作者：
Yu Wan Cheng;Zhang Guo Qiang;Liu Ya Hui;Xu Ling;Yan Ding Xiang;Huang Hua Dong;Tang Jian Hua;Xu Jia Zhuang;Li Zhong Ming
导电聚合物复合材料的电磁干扰屏蔽性能取决于导电网络的调控，在解决现代电子产品电磁污染问题方面具有广阔的应用前景。本文通过固相拉伸法在碳纳米管（CNT）/超高分子量聚乙烯（UHMWPE）复合材料中获得了取向偏析结构，并通过采用不同的拉伸比来控制偏析网络的取向。得益于独特的定向偏析结构，复合材料提供了突出的EMI屏蔽性能与有趣的频率选择性，这是没有发生在传统的偏析复合材料。此外，取向偏析复合材料还获得了显著的力学增强，这归因于界面结晶沿着偏析路径和高度取向层状结构的形成。当拉伸比为6时，含有2wt%CNTs的定向偏析复合材料的电磁屏蔽效能最大，达到33.5dB，拉伸强度最大，达到216.1MPa，分别比常规偏析复合材料提高了69.2%和455.5%。这一努力证明了一个简单的，可行的，有效的方法，机械鲁棒性，带宽选择性的EMI屏蔽复合材料的设计和制造。
Manipulation of the conductive network is essential for the electromagnetic interference (EMI) shielding performance of conductive polymer composites, which have broad application prospects to address the concerns of electromagnetic pollution emitted by modern electronics. In this work, the oriented segregated structure was achieved in carbon nanotube (CNT)/ultrahigh molecular weight polyethylene (UHMWPE) composites via solid-phase stretching and the orientation of segregated network was controlled by adopting different draw ratios. Benefiting from the unique oriented segregated structure, the composites delivered prominent EMI shielding performance with intriguing frequency selectivity, which did not occur in conventional segregated composites. Moreover, remarkable mechanical reinforcement was obtained in the oriented segregated composites, which was attributed to the interfacial crystallization along segregated pathways and the formation of highly oriented lamellae. At a draw ratio of 6, the oriented segregated composite with 2 wt% CNTs showed the maximum EMI shielding effectiveness of 33.5 dB and tensile strength of 216.1 MPa, which surpassed the conventional segregated composite by 69.2% and 455.5%, respectively. This effort demonstrates a simple, feasible, and effective approach for the design and fabrication of mechanically robust, bandwidth-selective EMI shielding composites.
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通过再生纤维素作为支撑基底和碳纳米管/聚合物作为功能层的多层组装可调节电磁干扰屏蔽效果
影响因子：
6.4
作者：
Liang-Qing Zhang;Biao Yang;Jian Teng;Jun Lei;Ding-Xiang Yan;Gan-Ji Zhong;Zhong-Ming Li
通讯作者：
Zhong-Ming Li
DOI：
10.1109/tcpmt.2016.2606161
发表时间：
2016-09
期刊：
IEEE Transactions on Components, Packaging and Manufacturing Technology
影响因子：
--
作者：
Yang Tian;Hong Wang;Kokyan Lee;K. Ang
通讯作者：
Yang Tian;Hong Wang;Kokyan Lee;K. Ang
影响因子：
9.5
作者：
Weili Song;Congcheng Gong;Huimin Li;Xiaodong Cheng;Mingji Chen;Xujin Yuan;Haosen Chen;Yazheng Yang-Yazh
通讯作者：
Weili Song;Congcheng Gong;Huimin Li;Xiaodong Cheng;Mingji Chen;Xujin Yuan;Haosen Chen;Yazheng Yang-Yazh
影响因子：
10.9
作者：
Liang, Jiajie;Wang, Yan;Chen, Yongsheng
通讯作者：
Chen, Yongsheng
影响因子：
6.4
作者：
Kai Zhang;Gen-Hui Li;La-Mei Feng;Ning Wang;Jiang Guo;Kai Sun;Kai-Xin Yu;J. Zeng;Tingxi Li-Tin
通讯作者：
Kai Zhang;Gen-Hui Li;La-Mei Feng;Ning Wang;Jiang Guo;Kai Sun;Kai-Xin Yu;J. Zeng;Tingxi Li-Tin