The Effect of Surface Treatment on the Resistance Welding Technology for Carbon Fiber/Epoxy Resin Composites

IF 2.3 4区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES Applied Composite Materials Pub Date : 2023-10-24 DOI:10.1007/s10443-023-10165-1

Yi Zhao, Gang Zhao, Mingzhuan Li, Yaqiong Ge, Jian Xu

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Abstract

In this research, a high-efficiency joining technique of resistance welding is proposed to achieve high-quality joining of carbon fiber/epoxy (CF/Epoxy) composites. The effects of mechanical sanding and dielectric barrier discharge (DBD) plasma surface modification were investigated on joint properties. Through morphology observation, wettability research, and surface chemical element analysis, it was found that both methods effectively improved joint performance. Mechanical sanding increased surface roughness, facilitating mechanical interlocking between composite layers. DBD plasma treatment enhanced surface wettability, promoting better adhesion between the materials. Notably, the failure mode of the welded joint transformed from interface failures to interlayer failures, indicating improved joint integrity and strength. The combined treatment method, using both mechanical sanding and plasma treatment, yielded the highest single lap shear strength (LSS) of 25.78 MPa, which was an impressive 141.2% higher than the untreated sample.

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表面处理对碳纤维/环氧树脂复合材料电阻焊接技术的影响

本研究提出了一种电阻焊接的高效连接技术，以实现碳纤维/环氧（CF/Epoxy）复合材料的高质量连接。研究了机械打磨和介质阻挡放电（DBD）等离子体表面改性对接合性能的影响。通过形态观察、润湿性研究和表面化学元素分析发现，这两种方法都能有效改善接合性能。机械打磨增加了表面粗糙度，有利于复合材料层之间的机械互锁。DBD 等离子处理增强了表面润湿性，促进了材料之间更好的粘合。值得注意的是，焊接接头的失效模式从界面失效转变为层间失效，这表明接头的完整性和强度得到了改善。机械打磨和等离子处理相结合的处理方法产生了最高的单搭接剪切强度（LSS），达到 25.78 兆帕，比未经处理的样品高出 141.2%。

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来源期刊

Applied Composite Materials 工程技术-材料科学：复合

CiteScore

4.20

自引率

4.30%

发文量

审稿时长

1.6 months

期刊介绍： Applied Composite Materials is an international journal dedicated to the publication of original full-length papers, review articles and short communications of the highest quality that advance the development and application of engineering composite materials. Its articles identify problems that limit the performance and reliability of the composite material and composite part; and propose solutions that lead to innovation in design and the successful exploitation and commercialization of composite materials across the widest spectrum of engineering uses. The main focus is on the quantitative descriptions of material systems and processing routes. Coverage includes management of time-dependent changes in microscopic and macroscopic structure and its exploitation from the material''s conception through to its eventual obsolescence.