Volume 7, 2020
Special Issue – Advanced Joining Processes
|Number of page(s)||9|
|Published online||02 March 2020|
Evaluation of the properties of plastic-metal interfaces directly bonded via injection molding
Research Laboratory for Adhesion and Interfacial Phenomena, AIST, 1-1-1, Higashi, Tsukuba, Ibaraki 305-8565, Japan
2 Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 807-1 Shuku-machi, Tosu, Saga 841-0052, Japan
3 Taisei Plas, Co., Ltd., 10-5-1, Honcho, Nihonbashi, Chuo-ku, Tokyo 103-0023, Japan
* e-mail: firstname.lastname@example.org
Accepted: 15 January 2020
Plastic and metal can be directly bonded via insert injection molding by creating surface porous structures with 30–50 nm sizes on metal surface. Molten polymers can be penetrated into the small pores created on metal surface in the short molding process, and strong joint can be obtained. The bonding mechanism of aluminum alloy (Al5052) and polyphenylene sulfide (PPS) with two different surface features of Al5052 was studied. Scanning transmission electron microscopy (STEM) was performed to investigate the interfacial structures in terms of elemental distributions and three-dimensional (3D) inter-connectivity of the pores on the Al5052, and the chemical reaction which takes place during the joint process was investigated by X-ray photon spectroscopy (XPS). The properties of the joint interfaces were evaluated to discuss the effect of interfacial structures on the joint properties.
Key words: Plastic / metal / bonding mechanism / fracture / electron microscopy
© S. Horiuchi et al., Published by EDP Sciences 2020
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