CNT的表面改性对Cu基复合材料力学和电学性能的影响

doi:10.19976/j.cnki.43-1448/TF.2024060

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Abstract Improving the dispersion of carbon nanotubes (CNT) in the Cu matrix and their interfacial bonding can effectively improve the properties of carbon nanotube enhanced Cu-based (CNT/Cu) composite material. This paper employed a one-step hydrothermal method to in situ generate carbonized polymer dots (CPD) on the surface of CNT for surface modification. Subsequently, CNT@CPD/Cu composites were prepared through a sintering process, and the mechanical and electrical properties of the composites were tested. The results indicate that after surface modification treatment, the structure of acid-treated CNT₁ is severely damaged, leading to a weakened enhancement effect. In contrast, after surface modification of non-acid-treated CNT₂, CPD is loaded onto CNT₂, which not only preserves the structural integrity of the CNT but also significantly improves their dispersion in the matrix and enhances the bonding with Cu. Furthermore, the addition of CPD and CNT effectively refines the Cu

Key words： Cu-based composite carbonized polymer dot carbon nanotube mechanical property electrical property

Received: 01 July 2024 Published: 18 November 2024

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	Articles by authors
	LI Yikun
	ZHANG Yifan
	ZHAO Wenmin
	LIU Baixiong
	ZHANG Xuehui
	ZENG Longfei

Cite this article:

LI Yikun,ZHANG Yifan,ZHAO Wenmin, et al. Effects of surface modification of CNT on the mechanical and electrical properties of Cu-based composites[J]. Materials Science and Engineering of Powder Metallurgy, 2024, 29(5): 396-402.

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http://pmbjb.csu.edu.cn/EN/10.19976/j.cnki.43-1448/TF.2024060 OR http://pmbjb.csu.edu.cn/EN/Y2024/V29/I5/396

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