Influence of surface microstructure on bonding strength of modified polypropylene/aluminum alloy direct adhesion

Microstructures and bonding strength between the treated aluminum alloy and modified polypropylene (PP) were systemically investigated in this study. The results show that an increase in the surface energy of PP by grafting maleic anhydride(MAH) will result in better wetting of the resin on the alum...

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Bibliographic Details
Published in:Applied surface science Vol. 489; pp. 392 - 402
Main Authors: Chen, Jing, Du, Kunpeng, Chen, Xiumin, Li, Youbing, Huang, Jin, Wu, Yutao, Yang, Chaolong, Xia, Xiaochao
Format: Journal Article
Language:English
Published: Elsevier B.V 30.09.2019
Subjects:
Microstructures
Plastic-metal hybrids
Shear strength
Surface treatments
Shear strength
Surface treatments
Microstructures
Plastic-metal hybrids
ISSN:0169-4332, 1873-5584
Online Access:Get full text
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Summary:Microstructures and bonding strength between the treated aluminum alloy and modified polypropylene (PP) were systemically investigated in this study. The results show that an increase in the surface energy of PP by grafting maleic anhydride(MAH) will result in better wetting of the resin on the aluminum alloy layer. The porous microstructures were produced by polishing and anodizing. The interfacial bonding strength of specimens was increased rapidly after anodizing, and the maximum tensile shear strength and work of fracture of P/P-AlP specimen reach up to 10.05 MPa and 14.82 KJ/m2, respectively. The great increase in bonding strength was attributed to porous microstructures and large roughness on the aluminum alloy surface which resulted in resin melt flew into nano holes to from micro mechanical interlocking. •Polypropylene random copolymer was modified by grafted with maleic anhydride to increase the surface energy.•Modified PP/aluminum alloy direct joining of using micro-nano pressing technology(MNPT).•Experimentally investigation of effects of surface microstructure on bonding strength of plastic-metal hybrid(PMH)
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2019.05.270