Improved mechanical and electromagnetic interference shielding performance of segregated UHMWPE/CNTs via microwave-assisted sintering
Improved mechanical and electromagnetic interference shielding performance of segregated UHMWPE/CNTs via microwave-assisted sintering
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通过微波辅助烧结提高分离 UHMWPE/CNT 的机械和电磁干扰屏蔽性能
DOI：
10.1177/0954008320933322
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发表时间：
2020-07
影响因子：
2.1
通讯作者：
Liu Pengju
中科院分区：
文献类型：
--
作者：
Tang Jiahong;Ye Fan;Xie Yeping;Liu Pengju
在导电聚合物复合材料（CPC）中构建隔离网络是同时实现高导电性和电磁干扰（EMI）屏蔽性能的有效策略。本文提出了一种基于微波辅助烧结的先进成型技术制备偏聚半分子量聚乙烯/碳纳米管（UHMWPE/CNT）复合材料。扫描电子显微镜和光学显微镜的图像表明，通过球磨的UHMWPE颗粒的表面富集的CNT，并在随后的MW烧结过程中观察到UHMWPE/CNT复合材料的清晰和完整的导电网络，表明成功地构建了一个完美的偏析结构。分离的UHMWPE/CNT复合材料表现出优异的电导率和EMI屏蔽性能，分别为49.3 S/m和50 dB，沿着具有0.10体积%的低逾渗阈值。同时，由于微波烧结过程中的体积加热作用，微波烧结复合材料也获得了理想的力学性能。与传统成型方法相比，微波辅助烧结法具有结构更好、加工时间更短、能耗更低等独特优势，为制备具有上级导电性能和电磁屏蔽性能的CPC提供了一种高效、环保的方法。
Constructing the segregated networks is an efficient strategy to simultaneously achieve the high electrical conductivity and electromagnetic interference (EMI) shielding performance in conductive polymer composites (CPCs). Herein, an advanced molding technique based on microwave (MW)-assisted sintering was proposed to prepare the segregated ultrahigh molecular weight polyethylene/carbon nanotube (UHMWPE/CNT) composites. Scanning electron microscopy and optical microscopy images indicated that CNTs enriched on the surfaces of UHMWPE granules through ball milling, and the clear and complete conductive networks were observed in UHMWPE/CNT composites in the following MW sintering process, revealing that a perfect segregated structure was successfully constructed. The segregated UHMWPE/CNT composites exhibited an excellent electrical conductivity and EMI shielding performance of 49.3 S/m and 50 dB, respectively, along with a low percolation threshold of 0.10 vol%. Meanwhile, benefiting from the volumetric heating, an ideal mechanical property was also obtained in prepared composite by MW sintering. Compared with the conventional molding method, MW-assisted sintering shows its unique advantages, including better structural construction, shorter processing time, and lower energy consumption, which provides an efficient and environment-friendly method to fabricate CPCs with superior conductive and EMI shielding performance.
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影响因子：
15.1
作者：
Cui, Cheng-Hua;Yan, Ding-Xiang;Li, Zhong-Ming
通讯作者：
Li, Zhong-Ming
柱塞式注射成型制备分离导电碳纳米管/HDPE/UHMWPE复合材料
影响因子：
3
作者：
Zhai Wei;Sun Ruizhou;Sun Hongling;Ren Miaoning;Dai Kun;Zheng Guoqiang;Liu Chuntai;Shen Changyu
通讯作者：
Shen Changyu
具有协同电气和机械性能的分离导电聚合物复合材料
DOI：
10.1016/j.compositesa.2017.11.008
发表时间：
2018
期刊：
Composites Part A: Applied Science and Manufacturing
影响因子：
--
作者：
Zhai Wei;Zhao Shuaiguo;Wang Yan;Zheng Guoqiang;Dai Kun;Liu Chuntai;Shen Changyu
通讯作者：
Shen Changyu
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