Phosphorus based epoxy terminated structural adhesive 2. Curing, adhesive strength and thermal stability

The curing behavior of phosphorus based epoxy terminated polymers was studi ed using diaminodiphenyl ether, diaminodiphenyl sulfone, benzophenone tetra carboxylic dianhydride and the commercial hardener of Ciba-Geigy's two-pack araldite, as curing agent. The adhesive strength of these adhesives was me asured by various ASTM methods like lap-shear, peel, and cohesive tests on metal-metal, wood-wood and wood-metal interfaces. All these results were co mpared with the synthesized epoxy resins prepared from bisphenol-A and epic hlorohydrin having the epoxy equivalent value of 0.519. The thermal stabili ty of both the virgin resin and its cured form was also studied by thermogr avimetric analysis. (C) 2001 Published by Elsevier Science Ltd.