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
席佳琦 1戴亚光 2夏雷 3王玉琼 4杨文刚 4吕卫帮4
作者信息
- 1. 上海大学 材料科学与工程学院,上海 200444;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
- 2. 沈阳飞机设计研究所,沈阳 110035
- 3. 上海大学 材料科学与工程学院,上海 200444
- 4. 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
- 折叠
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.
Abstract
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 light-weight,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 charac-terized 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 perform-ance 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Key words
CNT/Cu/composite materials/electrical properties/metallized/lightning strike protection/non-destructive examination/CFRP引用本文复制引用
基金项目
科技部重点研发计划(2022YFA1205400)
出版年
2024
NETL
NSTL
维普
万方数据