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Estudo da influência do diluente reativo PGE na cinética de cura de resina epóxi utilizada em compósitos estruturais

By Costa Michelle Leali, Rezende Mirabel Cerqueira and Pardini Luiz Claudio

Abstract

Phenil glycidyl ether (PGE), a monofunctional diluent, has been used in epoxy resins formulations in order to increase the toughness of the epoxy molded composite. In a systematic study concerning its influence in the cure kinetics of the epoxy resin, it was used in concentrations of 2,5; 5,0; 10 and 20% in relation to a diglycidyl ether bisphenol-A (DGEBA)/diamino diphenil-sulfone (DDS) base matrix. Dynamic and isothermal scanning analysis were carried out using a differential scanning calorimety (DSC) equipment. For all the concentrations of PGE, a n order kinetics was observed, with n varing between 0,35 -- 0,91 as a function of the increase in the PGE concentration

Topics: kinetic of cure, epoxy resin, reactive diluent, Chemistry, QD1-999, Science, Q, DOAJ:Chemistry (General), DOAJ:Chemistry
Publisher: Sociedade Brasileira de Química
Year: 2000
OAI identifier: oai:doaj.org/article:329cd0ca8b8d49f3873bdfa5c792ef90
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