碳纤维复合材料基体改性/铜网组合雷击防护性能的研究
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空军工程大学航空机务士官学校,信阳 464000

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TB332

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Lightning Protection Performance of Carbon Fiber Composite Matrix Modification/Copper Mesh Combination
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Aviation Maintenance NCO Academy,Air Force Engineering University,Xinyang 464000

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    摘要:

    传统碳纤维复合材料(CFRP)树脂基体导电性差易遭受雷击损伤,本文使用石墨烯-镀镍碳纤维粉作为导电填料,对树脂基体进行电导率改性,并在表面铺设铜网,进行模拟雷电流冲击试验,检验基体改性/铜网组合雷击防护效果。试验结果表明,树脂基体改性后CFRP层压板在0°、90°纤维方向及厚度方向电导率分别为1.1571×104、1.0871×104、204.2 S/m,分别提高1.54倍、1.16倍、433.47倍。200 kA模拟雷电流A波冲击下,无防护试件雷击附着后明火燃烧,次生效应持续,而单一铜网防护和组合防护则能抑制次生效应;无防护表面最大损伤直径14.62 cm,此能量下铜网被击穿,单一铜网防护表面最大损伤直径19.05 cm,而组合防护表面最大损伤直径8.93 cm,下降53.12%;相比无防护试件,单一铜网和组合防护内部损伤面积分别下降66.2%和96.7%。单一铜网击穿后,树脂烧蚀后产生汽化反冲,增大损伤铜网脱落面积;组合防护铜网击穿后,改性树脂迅速导走电流,减小铜网脱落和内部烧蚀面积。

    Abstract:

    The traditional carbon fiber reinforced material ( CFRP ) resin matrix has poor conductivity and is prone to lightning damage. In this paper, grapheno-nickel plated carbon fiber powder is used as a conductive filler to modify the conductivity of the resin matrix, and a copper mesh is laid on the surface to conduct simulated lightning current impact tests to test the lightning protection of the matrix modification/copper mesh combination.The conductivity of CFRP laminates with modified resin matrix in the 0°, 90° fiber direction, and thickness direction is 1.1571×104 S/m,1.0871×104 S/m,204.2 S/m,which increased by 1.54 times, 1.16 times, and 433.47 times respectively. Under the impact of simulated lightning current A wave of 200 kA, the unprotected specimen is ignited by an flame after being struck by lightning, and the secondary effect persists, while both single copper mesh and combined protection can suppress the secondary effect. The maximum damage diameter of the unprotected surface is 14.62 cm, and the copper mesh is broken down under this energy.The maximum damage diameter of a single copper mesh protective surface is 19.05 cm, while the maximum damage diameter of a combined protection surface is 8.93 cm, a decrease of 53.12%.Compared with no protection, the internal damage area of single copper mesh and combined protection can be reduced by 66.2% and 96.7% respectively.After the breakdown of a single copper mesh, the resin undergoes vaporization and recoil after ablation, increasing the detachment area of the damaged copper mesh. After the combined protective copper mesh is broken down,the modified resin quickly conducts the current, reducing the detachment of the copper mesh and the internal ablation area.

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肖尧,张献逢,董俊,刘晓山,梁赟.碳纤维复合材料基体改性/铜网组合雷击防护性能的研究[J].宇航材料工艺,2023,53(3):69-75.

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  • 收稿日期:2021-09-05
  • 最后修改日期:2021-11-13
  • 录用日期:2021-11-16
  • 在线发布日期: 2023-06-26
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