Effect of carbon nanotube reinforcement on the mechanical and EMI shielding properties of CF/PEEK composites

被引：0
|
作者：
Qu M. [1 ,2 ]
Zhang L. [1 ,2 ]
Zhou J. [1 ,3 ]
Liu X. [1 ,2 ]
Zhang J. [1 ,2 ]
Yang L. [1 ]
Zhu S. [1 ,2 ]
机构：
[1] State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Key Laboratory of High Performance Fibers & Products, Ministry of Education, College of Material Science and Engineering, Donghua University, Shanghai
[2] Shanghai, Shanghai Key Laboratory of Lightweight Composite, Center for Civil Aviation Composites, Donghua University, Shanghai
[3] Research Center for Analysis and Measurement, Donghua University, Shanghai
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2022年 / 39卷 / 07期
关键词：
carbon fiber; composite material; electromagnetic interference shielding effectiveness (EMI SE); interface modification; mechanical property; polyether ether ketone (PEEK);
D O I：
10.13801/j.cnki.fhclxb.20211126.001
中图分类号：
学科分类号：
摘要：
In order to prepare a high temperature resistant thermoplastic composite material with integrated structure and function, which has excellent mechanical properties and electromagnetic interference shielding effectiveness at the same time, the mechanical properties, electrical conductivity and electromagnetic interference shielding effectiveness (EMI SE) of continuous carbon fiber reinforced polyether ether ketone composites (CF-CNT/PEEK) with different components of carbon nanotubes (CNT) were studied. The mechanical properties, interface morphology and shielding effectiveness of SCF-SCNT/PEEK laminates prepared with CNT modified PEEK sizing agent (SCNT) as conductive fillers were investigated, and the effect of the CNT (ACNT) without surface modification and only activation comparative experiment were compared. The results show that an appropriate amount of CNT will improve the mechanical properties, electrical conductivity and shielding effectiveness of the CF/PEEK laminate. SCNT is easier to uniformly disperse in PEEK than ACNT, and has a better combination with SCF and PEEK. In all samples, the tensile strength of SCF-SCNT/PEEK laminates with only 1wt%SCNT increased by 20.8% to 778 MPa compared with laminates without CNTs. Bending strength is increased by 25.9% to 1 684 MPa. The conductivity is increased by 5 times, reaching 0.15 S/cm. The electromagnetic interference shielding efficiency is increased by 69.76%, with an average value of 34.97 dB. © 2022 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.
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页码：3257 / 3267
页数：10
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