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The Influence of Nanofillers and Additives on the Adhesion Strength of Aluminum

[+] Author Affiliations
C. S. Goh, S. C. Tan, S. L. Ngoh, J. Wei

Singapore Institute of Manufacturing Technology, Singapore

Paper No. IMECE2010-38547, pp. 591-594; 4 pages
doi:10.1115/IMECE2010-38547
From:
  • ASME 2010 International Mechanical Engineering Congress and Exposition
  • Volume 3: Design and Manufacturing, Parts A and B
  • Vancouver, British Columbia, Canada, November 12–18, 2010
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4427-4
  • Copyright © 2010 by ASME

abstract

In this study, adhesives with Al2 O3 nanofillers or silane additives incorporated have been developed. Functionalization of the Al2 O3 nanofillers has been carried out to improve the bonding of the fillers to both the adhesive and Al substrate. The silane coupling agents on the nanofillers can react with the Al2 O3 , Al substrate and adhesive through their functional end groups and form strong covalent and hydrogen bonds which can improve the lap shear strength of the adhesive substantially. An improvement in lap shear strength has also been achieved when glycidoxypropyltrimethoxysilane is added directly into Epon 160 adhesive. There is also an obvious change in fracture mode from adhesive to cohesive due to the effect of silane addition which facilitates bond formation between the adhesive and Al substrate.

Copyright © 2010 by ASME

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