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Title: Joining of metal and non-polar polypropylene composite through a simple functional group seeding layer
Polypropylene (PP) and its composites are one of the hardest to directly join with metals due to their inherent chemical incompatibility. This paper presents a simple, efficient, and cost-effective method for joining PP composite to aluminum alloy in spot welding configuration by seeding the functional groups via an insert layer of PA6 thin film without requiring surface or material pre-treatment. The resulting joint loading capacity is shown to be sufficiently high to consistently develop failures in PP substrates in lap shear tensile tests away from the bonded area. Joint interface microstructure features are examined in detail. Bonding mechanisms are then described based on the detailed observations obtained in this study.  more » « less
Award ID(s):
2126163
PAR ID:
10475454
Author(s) / Creator(s):
; ;
Publisher / Repository:
Elsevier
Date Published:
Journal Name:
Journal of Manufacturing Processes
Volume:
85
Issue:
C
ISSN:
1526-6125
Page Range / eLocation ID:
90 to 100
Subject(s) / Keyword(s):
Polymer composites Metal to polymer joining Friction spot welding Aluminum alloy Multi-material Surface pre-treatment Bonding interface Hybrid structures
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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