Journal
THERMOCHIMICA ACTA
Volume 593, Issue -, Pages 30-36Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.tca.2014.06.014
Keywords
Silicone-phenyl contained polyamine; Non-isothermal curing reaction; Isoconversional kinetics
Funding
- Zhejiang Province - Science and Technology Department of Zhejiang Province, PR China [2009R50016]
- Program for Changjiang Scholars and Innovative Research Team in the university [IRT09412]
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A novel type of silicone-phenyl contained aliphatic polyamine (PSPA) was originally synthesized and employed as the curing agent for bisphenol A epoxy resin (DGEBA). The non-isothermal curing behavior of DGEBA/PSPA was systematically characterized with differential scanning calorimetry (DSC), showing that the reaction exothermic peak temperature increased with the increasing heating rate. The isoconversional Vyazovkin method was used to analyze the curing kinetics, giving the effective activation energy E alpha. The E alpha rapidly decreased at the initial curing stage, after which it kept stable and decreased quickly to the end. In addition, thermo gravimetric analysis (TGA) showed that the cured DGEBA/PSPA network was thermally stable up to 380 degrees C. (C) 2014 Elsevier B.V. All rights reserved.
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