Evaluation of 350F Curing Adhesive Systems on Phosphoric Acid Anodized Aluminum Substrates.
Interim rept. Sep 82-Jun 84,
DAYTON UNIV OH RESEARCH INST
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Ten different 350 F 177 C curing adhesiveprimer systems were used to bond phosphoric acid anodized aluminum test specimens. The objective of the program was to compare the compatibility of these adhesiveprimer systems, with phosphoric acid anodized and sulfuricdichromate acid etched aluminum surfaces. All the specimens were prepared by Douglas Aircraft Company during the PABST program and tested at the University of Dayton. Lap shear, peel, and stress-durability tests were carried out. The test results indicated several general types of behavior. Firstly, the predominate failure mode for most of the adhesiveprimer systems in all three types of tests was an interfacial failure between the primer and adhesive. Secondly, little to no difference is observed between the results for the anodized adn aciddichromate etched surface treatments, although a few of the specific adhesiveprimeralloytest type combinations exhibited better or worse properties for one surface type than the other. Keywords Phosphoric acid Anodize Optimized Etch Lap Shear Peel Stress Durability Adhesive.
- Adhesives, Seals and Binders