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Indexed by:期刊论文

Date of Publication:2014-11-10

Journal:THERMOCHIMICA ACTA

Included Journals:SCIE、EI、Scopus

Volume:595

Page Number:22-27

ISSN No.:0040-6031

Key Words:Aromatic amine; Phthalide structure; Epoxy resin; Curing kinetics; Thermal-mechanical properties

Abstract:The use of novel aromatic diamine containing phthalide structure (BAPP) as curing agent of diglycidylether of bisphenol A (DGEBA) epoxy resin has been studied. BAPP can react with epoxy monomers by an epoxy-amine condensation mechanism, which renders phthalide cardo incorporate into the network structure of the thermoset. The curing behavior and kinetics have been investigated by differential scanning calorimetry (DSC) and the kinetic analysis of non-isothermal cure shows that autocatalytic model is suitable to describe the cure mechanism. The thermal-mechanical properties have been determined with dynamic mechanical analysis (DMA) and the activation energies for relaxation were calculated according to the Arrhenius law. Thermogravimetric analysis exhibits a lower initial decomposition temperature, decreased rate of decomposition and higher char yield compared with DGEBA cured with commercially available 4,4'-diaminodiphenylsulfone (DDS). (C) 2014 Published by Elsevier B.V.