轻质高导电金属化碳纳米管薄膜的制备及其雷击防护性能  

Preparation and lightning strike protection properties of lightweight high conductive metallized carbon nanotube film

作　　者：席佳琦 戴亚光[2] 夏雷[1] 王玉琼 杨文刚 吕卫帮 XI Jiaqi;DAI Yaguang;XIA Lei;WANG Yuqiong;YANG Wengang;LYU Weibang(School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China;AVIC Aircraft Design and Research Institute,Shenyang 110035,China;Innovation Center for Advanced Nanomaterials,Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences,Suzhou 215123,China)

机构地区：[1]上海大学材料科学与工程学院,上海200444 [2]沈阳飞机设计研究所,沈阳110035 [3]中国科学院苏州纳米技术与纳米仿生研究所先进纳米复合材料创新中心,苏州215123

出　　处：《复合材料学报》2024年第1期196-206,共11页Acta Materiae Compositae Sinica

基　　金：科技部重点研发计划(2022YFA1205400)。

摘　　要：碳纤维增强树脂基复合材料(CFRP)导电性差,无法满足飞机航行过程中的雷击防护需求。金属化碳纳米管薄膜具备轻质、高导电、高载流的特点,可应用于复合材料雷击防护。采用电化学沉积工艺成功制备了一种碳纳米管(CNT)/Cu复合薄膜,并对其微观结构、电学性能及载流失效行为进行了表征分析。结果表明,CNT/Cu复合薄膜柔性较好,具有明显的梯度结构,铜的含量在薄膜厚度方向上逐渐递减。复合薄膜电导率与Cu同一量级,比电导率为Cu的2倍,载流量及比载流量分别为商用铜网的1.4倍和7倍。复合薄膜中的CNT抑制了Cu在大载流作用下电迁移的发生,进而延长其载流失效时间。基于CNT/Cu复合薄膜制备了CFRP雷击防护试样,进行人工模拟雷击试验及高精度损伤分析,评估雷击防护效果。与商用铜网雷击防护材料相比,CNT/Cu复合薄膜质量减轻61%,且表现出更为优异的雷击防护性能。Due to the poor conductivity,carbon fiber reinforced resin matrix composites(CFRP)cannot meet the lightning strike protection requirement of aircrafts.The metallization of carbon nanotube(CNT)films are lightweight,and possess high conductivity and high current-carrying capacity,making them promising for lightning strike protection of composite materials.CNT/Cu composite films were successfully prepared by electrochemical deposition process,and its microstructure,electrical properties and current-carrying failure behavior were characterized and analyzed.The results show that CNT/Cu composite films are flexible and have gradient microstructures,where the content of Cu gradually decreases from one side to another.The electrical conductivity of the composite films is 2.16×107 S/m,and their specific conductivity is 2 times of pure Cu,and the current carrying capacity and specific current carrying capacity are 1.4 times and 7 times of copper mesh,respectively.CNTs in the composite film can inhibit the electromigration of Cu,thus prolonging its current-carrying failure time.CFRPs for lightning strike protection testing were prepared by using CNT/Cu composite films,and the lightning strike protection performance was evaluated by artificial simulation lightning test and damage analysis.Compared with copper mesh,CNT/Cu composite films are 61%lighter and showed more excellent lightning protection performance.

关 键 词：CNT/Cu 复合材料 电学性能 金属化 雷击防护 无损分析 碳纤维增强树脂基 

分 类 号：TB333[一般工业技术—材料科学与工程]