Micro-nano interfacial mechanical interlocking structure-property of the ultrasonic-assisted hot press molded polypropylene/aluminum alloy hybrid. Issue 3 (1st February 2023)

• Record Type: Journal Article
• Authors: Wen, Yi; Li, Sulan; Huang, Jin; Gao, Ning; Hu, Wenjin; Jiang, Yu; Li, Youbing; Yang, Chaolong; Qu, Lunjun; Xia, Tian; Tang, Hailong
• Is Part Of: Journal of adhesion science and technology. Volume 37:Issue 3(2023)
• Page Start: 452
• Page End: 468
• Publication Date: 2023-02-01
• Subjects: Plastic-metal hybrid -- ultrasonic-assisted hot press molding technology -- crystallization -- mechanical interlocking structure -- micro-nano structure; Adhesion -- Periodicals; Adhesives -- Periodicals; 668.3
• DOI: 10.1080/01694243.2022.2034711
• Languages: English
• ISSNs: 0169-4243

Abstract

Abstract: An isotactic polypropylene/aluminum alloy hybrid was fabricated by a self-made ultrasonic-assisted hot press molding (UAHPM) technology, and the properties and structure at the plastic-metal interface were explored. The surface of aluminum alloy was chemically etched and anodized to form micro- and nano- pore structures. The field emission scanning electron microscopy (FE-SEM) was used to observe the strong micro-nano two-scale mechanical interlocking structures formed at the interface of PP/aluminum hybrid. The element diffusion at the plastic-metal interface was detected by the energy dispersive spectrum. The results showed the stronger isotactic polypropylene/aluminum hybrids were manufactured by the UAHPM technology compared with the traditional press-molded samples. The maximal tensile shear strength of the UAHPMed hybrid reached up to 18.96 MPa, compared with 9.77 MPa for the conventional hybrid. The bonding layer between isotactic polypropylene and the aluminum alloy was 3.7um prepared by the UAHPM technique against 6.2 um for the conventional press molding technology. The thermal property of polypropylene was examined by differential scanning calorimetry (DSC), and crystal structure was characterized by X-ray diffraction (XRD), and the β-crystal of PP existence at the PMH's interface contributes to the excellent plasticity and strong bonding strength.