| XU Yuqiong,ZHENG Qiansong,YANG Qibiao,ZHONG Zishan.Research Progress of Adhesive Bonding Properties Based on Laser Surface Micro and Nano Structures[J],53(8):11-24 |
| Research Progress of Adhesive Bonding Properties Based on Laser Surface Micro and Nano Structures |
| Received:April 21, 2023 Revised:September 19, 2023 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2024.08.002 |
| KeyWord:laser surface treatment adhesive bonding micro and nano structures joint strength surface property mechanism of action |
| Author | Institution |
| XU Yuqiong |
School of Mechanical Engineering, Hubei University of Technology, Wuhan , China;Hubei Key Laboratory of Modern Manufacturing Quality Engineering, Wuhan , China |
| ZHENG Qiansong |
School of Mechanical Engineering, Hubei University of Technology, Wuhan , China;Hubei Key Laboratory of Modern Manufacturing Quality Engineering, Wuhan , China |
| YANG Qibiao |
School of Mechanical Engineering, Hubei University of Technology, Wuhan , China |
| ZHONG Zishan |
School of Mechanical Engineering, Hubei University of Technology, Wuhan , China;Hubei Key Laboratory of Modern Manufacturing Quality Engineering, Wuhan , China |
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| Abstract: |
| Adhesive bonding has been widely concerned with its unique properties, but in practical applications, it often leads to premature failure of the joint in service due to insufficient interfacial bonding strength. Laser surface treatment is a method to effectively improve the surface performance of the adhesive joint, which will make the surface of the bonding material form a different surface micro nano structure, thus improving the performance of the joint. Firstly, the principle of laser surface treatment and the classification of lasers are introduced, which are mainly divided into short-pulse lasers (nanosecond lasers) and ultrashort-pulse lasers (picosecond lasers and femtosecond lasers), and the advantages and disadvantages of different lasers and the processing quality characteristics are compared. The nanosecond laser is the most widely used in the field of adhesive bonding due to its low cost and excellent stability, the picosecond laser is suitable for the processing of surface micrometer structure due to its characteristics, and the femtosecond laser is suitable for the processing of surface delicate structure. Meanwhile, the effect of parameters such as the laser power, spot overlap rate, pulse energy and wavelength on the strength of the joint is analyzed. Secondly, starting from laser processing of different surface micro structures, a variety of micro and nano structures such as surface pits, grooves, grids, rings, and their processing methods are expounded. The effects of laser processing parameters on the morphology of micro and nano structures and the effects of different surface micro and nano structures on the joint strengths of different materials are analyzed and the enhancement effect and applicable scenarios in comparison with the characteristics of micro and nano structures are investigated. In addition, for different surface micro and nano structures, their structural parameters such as width, depth, diameter, density, etc. are different, resulting in different chemical composition and wettability properties of the joint surface, which makes the contact area between the adhesive and the joint surface different. It is found that these micro and nano structural parameters can effectively improve joint strength within a certain range, but beyond this range, they often lead to bubbles retained in the micro and nano structures, resulting in defects in the joints and thus reducing the strength of the joints. At the same time, the mechanism of action between the adhesive layers is inextricably linked to the strength of the joint. Different surface micro and nano structures have significantly different mechanisms of action on the adhesive layer. According to the research literature in recent years in China and abroad, it is summarized and found that after laser treatment can form surface micro and nano structures and change the surface roughness of the joint, thereby increasing the surface of the joint and the contact area of the adhesive, increasing the surface of the joint and the number of mechanical interlocking with the adhesive, promoting the joint surface and adhesive to form chemical bonding cooperation, enhancing the adhesive in the joint surface wettability and surface micro and nano structures, inhibiting crack emergence and expansion, and having a certain effect on the enhancement of joint strength. Finally, based on the current problems and technical applications of laser surface treatment of micro and nano structures, the development of adhesive bonding performance of laser surface treatment of micro and nano structures is prospected. |
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