Paper Information

Journal:   IRANIAN POLYMER JOURNAL (ENGLISH)   MAY 2006 , Volume 15 , Number 5 (71); Page(s) 425 To 432.
 
Paper: 

CURING KINETICS OF O-CRESOL-FORMALDEHYDE EPOXY RESIN/3-METHYL-TETRAHYDROPHTHALIC ANHYDRIDE/ORGANIC-MONTMORILLONITE NANOCOMPOSITE BY ISOCONVERSIONAL METHODS

 
 
Author(s):  GAO J.*, ZHAO M., QIN J.
 
* COLLEGE OF CHEMISTRY AND ENVIRONMENTAL SCIENCE, HEBEI UNIVERSITY, HEBEI, BAODING 071002, P.R. CHINA
 
Abstract: 

The cure reaction for a system of o-cresol-formaldehyde epoxy resin (o-CFER), with 3-methyl-tetrahydrophthalic anhydride (MeTHPA), N,N-dimethyl-benzylamine, and organic montmorillonite (org-MMT), as a curing reagent, an accelerator and an additive, respectively, was investigated by means of X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The XRD result indicates that an exfoliated nanocomposite was obtained. The curing kinetic data of o-CFER/MeTHPA and o-CFER/MeTHPA/org-MMT nanocomposites were obtained by non-isothermal differential scanning calorimetry. The nanocomposite has a slightly higher average value of activation energy than that of pure o-CFER due to the epoxy resins chains are inserted into the galleries of montmorillonite and the movement and diffusion of reactive groups are hindered. The curing kinetics analysis was performed by the isoconversional methods of Ozawa, Friedman, and Kissinger-Akahira-Sunose. The results showed that the Ozawa method is the best of the three models studied.

 
Keyword(s): O-CRESOL-FORMALDEHYDE EPOXY RESIN, MONTMORILLONITE, CURING KINETICS, THERMAL ANALYSIS
 
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