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The use of dihydrazides as latent curing agents in diglycidyl ether of bisphenol A coatings
Tomuta, Adrian; Ramis Juan, Xavier; Ferrando Piera, Francesc; Serra, Angels
Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics; Universitat Politècnica de Catalunya. TERFIQ - Grup de Termodinàmica i Fisico-Química
Dihydrazides of different structure were synthesized and tested as curing agents for DGEBA epoxy coatings. By calorimetric studies their latent characteristics were proved and the kinetics of the curing studied. The temperatures of activation are usually dependant on the melting point of the dihydrazide. The acceleration by base and Lewis acids was proved, but the latent character was diminished. FTIR/ATR allowed characterizing the final structures of the thermosets and confirming that the fully cured was achieved. The thermal stability of the materials and their thermomechanical characteristics were evaluated by TGA and DMTA, respectively. Mechanical properties of the thermosets were also determined.
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
Epoxy resins
Crosslinking (Polymerization)
Resines epoxídiques
Attribution-NonCommercial-NoDerivs 3.0 Spain

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