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Fusion Bonding Possibility for Incompatible Polymers by the Novel Ultrasonic Welding Technology: Effect of Interfacial Compatibilization
Fu, Xie1,2; Wu, Xueli3; Huang, Guigang4; Li, Wenquan5; Kang, Shuai1; Wang, Liang1; Luo, Jinling1; Pan, Ziwei1; Lu, Wenqiang1
2022-05-03
摘要Fusion bonding for polymers has been successfully welded for the same and dissimilar materials. However, it is difficult to bond incompatible polymers due to poor interfacial adhesion. Usually, interfacial compatibilization can resolve this problem. According to the mechanism, an interlayer solder sheet (ISS) consisting of maleic anhydride-functionalized polypropylene (PP-g-MAH) and polyamide6 (PA6) was introduced into the ultrasonic welding (USW) device. In this way, it successfully realized the weldability between PP and PA6. The welding strength of PP-PA6 reached 22.3 MPa, about 84% welding strength for the PP body and 63% tensile strength for PP. Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and scanning electron microscopy (SEM) showed the formation of PP-g-PA6 copolymer in blends. This copolymer played the role of an emulsifier, which enhanced the interfacial adhesion between PP and PA6 in two phases, leading to micron-scale homogeneity. In the USW process, the copolymer could act as a bridge between PP and PA6 molecular chains to realize the fusion bonding of incompatible polymers. Finally, we proposed the fusion bonding model for PP-PA6 interfaces.
DOI10.1021/acsomega.2c00255
发表期刊ACS OMEGA
ISSN2470-1343
卷号7期号:17页码:14797-14806
通讯作者Fu, Xie(fuxie@cigit.ac.cn) ; Lu, Wenqiang(wqlu@cigit.ac.cn)
收录类别SCI
WOS记录号WOS:000813218000001
语种英语