Enhancement of adhesion between copper and vinyl ester in glass fiber-vinyl ester composites

The paper describes surface treatment methods to improve adhesion between copper and vinyl ester in glass fiber-vinyl ester composites. Surface treatment methods were developed for commercially available copper that was optimized for epoxies and adhesion performance was compared based on 90° peel st...

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Bibliographic Details
Published in:Composite interfaces 2007-01, Vol.14 (2), p.99-116
Main Authors: Obaid, A. Abu, Gokce, A., Yarlagadda, S., Advani, S. G.
Format: Article
Language:English
Subjects:
GLASS FIBER/VINYL ESTER
PEEL STRENGTH
SURFACE TREATMENT OF COPPER
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Summary:The paper describes surface treatment methods to improve adhesion between copper and vinyl ester in glass fiber-vinyl ester composites. Surface treatment methods were developed for commercially available copper that was optimized for epoxies and adhesion performance was compared based on 90° peel strength measurements. Four surface treatments for copper were tested: (i) co-cured Epon/vinyl ester; (ii) fully cured Epon; (iii) epoxy film adhesive; and (iv) γ-MPS silane along with two baseline systems: copper/vinyl ester and copper/epoxy. Measured average peel strengths for the surface treatments were 21%, 101%, 110% and 91% of the baseline copper/vinyl ester system, respectively. Compared to the copper/epoxy system, fully cured Epon, epoxy film adhesive and the silane treatment generated comparable adhesion between copper and vinyl ester. For all samples tested, mixed cohesive/adhesive failure modes were observed. Overall, the surface treatment with the silane coupling agent is the most appropriate method for obtaining comparable and uniform performance compared to copper/glass fiber/epoxy system (FR4 materials).
ISSN:0927-6440
1568-5543
DOI:10.1163/156855407779819008