文献类型：期刊文献

中文题名：具有电磁波屏蔽能力的高强短切碳纤维增强聚醚醚酮材料

英文题名：High-Strength Short-Cut Carbon Fiber Reinforced Polyether Ether Ketone Material with Electromagnetic Shielding Capability

作者：赖礼汇 明星星 韦啸 瞿进 刘珊 秦舒浩 张家宝

第一作者：赖礼汇

机构：[1]重庆长安汽车股份有限公司,重庆400021;[2]贵州理工学院材料与能源工程学院,贵州贵阳550003;[3]贵州省材料产业技术研究院,贵州贵阳550014;[4]江林(贵州)高科发展股份有限公司,贵州安顺561000

第一机构：重庆长安汽车股份有限公司,重庆400021

年份：2025

卷号：41

期号：11

起止页码：136-144

中文期刊名：高分子材料科学与工程

外文期刊名：Polymer Materials Science & Engineering

收录：;北大核心:【北大核心2023】；

基金：贵州省科技计划项目(黔科合中引地(2024)012,黔科合服企[2023]001,黔科合中引地[2024]042,黔科合支摄[2023]一般146)。

语种：中文

中文关键词：聚醚醚酮;碳纤增强;电磁屏蔽;复合材料

外文关键词：polyether ether ketone;carbon fiber;electromagnetic shielding;composite material

摘要：随着电子通信、航空航天和新汽车材料技术的迅速发展,高强轻质电磁屏蔽材料成为人们研究的热点。聚醚醚酮(PEEK)以其耐高低温,耐腐蚀,不水解,V0级阻燃,能适应各种严苛环境等特性受到研究者的青睐。文中使用熔融共混及注塑成型的方法制备了不同含量的碳纤增强PEEK复合材料,通过扫描电镜、X射线衍射、差示扫描量热分析、矢量网络分析仪及万能试验机对该复合材料进行分析。结果表明,当碳纤含量达到50%时,PEEK复合材料在8.2~12.4GHz下的电磁屏蔽效率(SE_(T))为37.57d B,其中吸收屏蔽效率(SE_(A))达到28.18d B。相比较于纯的PEEK材料,复合材料的拉伸强度提高230%,弯曲模量提高744%,冲击强度提高62%。碳纤的加入及良好的界面结合使得碳纤在基体内形成了互通的导电网络,使得电磁波进入之后以电损耗和界面极化损耗的方式耗散,复合材料的刚性和韧性同步提高。提出了一种高性能电磁屏蔽材料的简单的制备策略,同时拓宽了PEEK材料在电磁波屏蔽领域的应用。
With the rapid advancement of electronic communication,aerospace,and novel automotive materials technologies,high-strength lightweight electromagnetic shielding materials have emerged as a significant research focus.Polyether ether ketone(PEEK),renowned for its exceptional resistance to high and low temperatures,corrosion,hydrolysis,and its V0 flame-retardant properties,has garnered considerable attention from researchers due to its adaptability to various extreme environments.In this study,carbon fiber-reinforced PEEK composites with varying contents were fabricated through melt blending and injection molding techniques.The resulting composites were characterized by scanning electron microscopy(SE_(M)),X-ray diffraction(XRD),differential scanning calorimetry(DSC),vector network analysis,and universal testing machine evaluations.The findings indicate that when the carbon fiber content reaches 50%,the electromagnetic shielding effectiveness(SET)of PEEK composite within the frequency range of 8.2~12.4 GHz is 37.57 dB,with an absorption shielding effectiveness(SE_(A))of 28.18 dB.Compared to pure PEEK material,the tensile strength of the composite increases by 230%,the bending modulus by 744%,and the impact strength by 62%.The incorporation of carbon fibers,coupled with strong interfacial bonding,facilitates the formation of interconnected conductive networks within the matrix.Consequently,upon entering the material,electromagnetic waves are dissipated via mechanisms such as electrical loss and interfacial polarization loss,thereby enhancing both the rigidity and toughness of the composite.This work proposes a straightforward preparation strategy for high-performance electromagnetic shielding(EMI)materials,thus expanding the application potential of PEEK in the field of electromagnetic shielding.