ABSTRACT
Of all the adhesive systems developed for structural bonding of aluminum alloys, by far the most common are the epoxies. Epoxy adhesives have a great affinity for properly prepared aluminum alloys, with the ability to flow and attach to the oxide layers formed by the surface preparation processes. Nitrile epoxy adhesives are formulated to be used with primers, many of them of the corrosion resistant type. The epoxy polyamide adhesives can be obtained in both liquid and film form. Epoxy adhesives are available in a number of different forms. All film epoxy adhesives employ fillers of various kinds to control thixotrophy, regulate flow of the adhesive during the cure cycle, and modify the adhesive mechanical properties. The durability of structural modified epoxy adhesives can generally be described as good to excellent; however, any discussion of durability must necessarily involve many factors other than the adhesive.
