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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.

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Environmental effects on the ageing of epoxy adhesive joints

Doyle, G. and Pethrick, R.A. (2009) Environmental effects on the ageing of epoxy adhesive joints. International Journal of Adhesion and Adhesives, 29 (1). pp. 77-90. ISSN 0143-7496

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Abstract

Adhesive bonded joints are exposed to a range of different environments in aerospace applications. This paper reports dielectric and mechanical analysis of aluminium-epoxy bonded adhesives joints exposed to de-ionized water, aqueous urea solution and salt water at 65 degrees C. The changes observed are the results of plasticization and corrosion. In the case of the aqueous urea solution, passivation of the oxide by the urea reduced the rate of corrosion. Sea water contains mobile ions and a new feature is detected associated with filiform corrosion. The non-polar media aviation fuel and hydraulic fluid are able to plasticize the adhesive and there is a consequent reduction in the strength of the joint. Propylene glycol, although it is polar solvent, produces limited plasticization and degradation of the joints. Dichloromethanc was very aggressive and produced a rapid loss of strength of the joints.