压力注胶对硅烷接枝Ni/CFRP粘接的影响

doi:10.3901/JME.2023.06.084

机械工程学报 ›› 2023, Vol. 59 ›› Issue (6): 84-94.doi: 10.3901/JME.2023.06.084

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压力注胶对硅烷接枝Ni/CFRP粘接的影响

王辉^1,2, 黄开^1,3, 孙展鹏¹, 华林¹, 陈一哲²

1. 武汉理工大学现代汽车零部件技术湖北省重点实验室武汉 430070;
2. 武汉理工大学汽车零部件技术湖北省协同创新中心武汉 430070;
3. 武汉理工大学湖北省新能源与智能网联车工程技术研究中心武汉 430070

收稿日期:2022-06-08 修回日期:2022-10-19 出版日期:2023-03-20 发布日期:2023-06-03
通讯作者: 华林(通信作者),男,1962年出生,博士,教授,博士研究生导师。主要研究方向为现代汽车设计制造,汽车轻量化技术,汽车工业工程。E-mail:hualin@whut.edu.cn
作者简介:王辉,男,1984年出生,博士,副教授,博士研究生导师。主要研究方向为汽车碳纤维零部件轻量化成形与连接。E-mail:huiwang@whut.edu.cn;黄开,男,1998年出生,硕士研究生。主要研究方向为汽车轻量化连接技术。E-mail:kaihuang@whut.edu.cn;陈一哲,男,1990年出生,博士,副教授,博士研究生导师。主要研究方向为汽车轻量化制造技术,新能源汽车碳纤维复合材料先进成型技术,轻质高强板材流体介质成型技术。E-mail:yzchen@whut.edu.cn
基金资助:
国家自然科学基金(51775398，51805392)、111计划(B17034)、教育部创新团队发展计划(IRT_17R83)和中央高校基础研究(2018III067GX，2018III074GX)资助项目。

Effect of Adhesive Injection on Adhesion of Silane Grafted Ni/CFRP

WANG Hui^1,2, HUANG Kai^1,3, SUN Zhanpeng¹, HUA Lin¹, CHEN Yizhe²

1. Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan 430070;
2. Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan University of Technology, Wuhan 430070;
3. Hubei Research Center for New Energy & Intelligent Connected Vehicle, Wuhan University of Technology, Wuhan 430070

Received:2022-06-08 Revised:2022-10-19 Online:2023-03-20 Published:2023-06-03

摘要/Abstract

摘要： 针对复合材料(Carbon fibre reinforced plastics, CFRP)叶片镍包边粘接强度不足，稳定性不高的问题，提出压力注胶强化KH550接枝Ni/CFRP粘接方法。通过气缸压力推动注胶活塞，将胶粘剂注入密封处理后的待粘接区域，完成充填后在压力作用下实现初步固化粘合，以增强Ni/CFRP的粘接性能。通过单搭接剪切试验测试试样剪切强度，利用扫描电子显微镜(Scanning electron microscope, SEM)、X射线能谱(X-ray energy spectroscopy, EDS)和傅里叶红外光谱(Fourier transform infrared spectroscopy, FTIR)表征镍板表面和粘接界面的形貌变化和化学成分变化，采用分子动力学方法分析压力作用对粘接界面分子间化学反应的影响。结果表明，1% KH550接枝处理可提高Ni/CFRP粘接试样剪切强度15.7%，压力注胶工艺可进一步提升剪切强度4.8%，提升粘接稳定性29.3%。压力作用有效减少气泡、胶层裂纹的产生，促进胶粘剂微结构渗透，减小界面处胶粘剂/偶联剂分子距离，增强界面相互作用，同时促进胶粘剂分子与偶联剂分子反应，提高界面分子间的化学键合率。压力注胶方法可以促进粘接界面机械嵌合、物理吸附和化学键合，从而改善粘接性能，为复杂曲面轮廓件的胶粘连接强化提供参考。

关键词: 硅烷偶联剂, 压力注射, 粘接, 分子动力学

Abstract: For the problem of insufficient bonding strength and low stability of Ni shields of composite (Carbon fibre reinforced plastics, CFRP) blades, an adhesive injection method is proposed to strengthen KH550 grafted Ni/CFRP bonding. The adhesive, pushed by a piston, is injected into the sealed bonding area. After the filling, a packing process is conducted to enhance the bonding. The morphology and chemical composition of the surface and the interface are characterized by scanning electron microscopy (SEM), X-ray energy spectroscopy (EDS) and Fourier transform infrared spectroscopy (FTIR). Molecular dynamics simulation is used to analyze the effect of pressure on the chemical reaction processes at the bonding interface. The results show that the shear strength of Ni/CFRP samples grafted with 1% KH550 is increased by 15.7%. The shear strength and bonding stability are further increased by 4.8% and 29.3% respectively through the adhesive injection method. Bubbles and cracks in the adhesive layer are effectively reduced with the method. The penetration of adhesive into micro structure is promoted. The molecular distance at the interface is reduced, and the physical adsorption is enhanced. Furthermore, the reaction between the adhesive molecules and the coupling agent molecules is promoted, and the chemical bonding ratio between the interface molecules is increased. The adhesive injection method, promoting the mechanical interlocking, physical adsorption and chemical reaction at the interface, improves the bonding property, which provides a reference for strengthening the bonding of complex parts.

Key words: silane coupling agent, pressure injection, adhesive bond, molecular dynamics

中图分类号:

TG496

王辉, 黄开, 孙展鹏, 华林, 陈一哲. 压力注胶对硅烷接枝Ni/CFRP粘接的影响[J]. 机械工程学报, 2023, 59(6): 84-94.

WANG Hui, HUANG Kai, SUN Zhanpeng, HUA Lin, CHEN Yizhe. Effect of Adhesive Injection on Adhesion of Silane Grafted Ni/CFRP[J]. Journal of Mechanical Engineering, 2023, 59(6): 84-94.

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压力注胶对硅烷接枝Ni/CFRP粘接的影响

Effect of Adhesive Injection on Adhesion of Silane Grafted Ni/CFRP

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