Effect of functionalized kaolinite on the curing kinetics of cycloaliphatic epoxy/anhydride system

Tao, Qi, Su, Linna, Frost, Ray L., He, Hongping, & Theng, Benny K.G. (2014) Effect of functionalized kaolinite on the curing kinetics of cycloaliphatic epoxy/anhydride system. Applied Clay Science, 95, pp. 317-322.

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Silane grafted kaolinite (KGS) was prepared through grinding kaolinite and then grafting with 3-aminopropyltriethoxysilane. The influence of KGS on the curing kinetics of cycloaliphatic epoxy resin was studied by non-isothermal differential scanning calorimetry at different heating rates. The reaction activation energy (Ea) was determined based on the Flynn–Wall–Ozawa method. The results of dynamic differential scanning calorimetry (DSC) kinetic analysis show that the surface hydroxyl groups of clay decreases the Ea from 70.6 kJ mol− 1 to 62.8 kJ mol− 1 and accelerates the curing reaction of the epoxy resin. The silane grafting reactions consume the surface hydroxyl groups of kaolinite and lead to a decrease in the catalytic efficiency of KGS in the curing of epoxy resin.

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ID Code: 83645
Item Type: Journal Article
Refereed: Yes
Keywords: Cure kinetics, Epoxy resin, Kaolinite, Silylation, Differential scanning calorimetry (DSC)
DOI: 10.1016/j.clay.2014.04.034
ISSN: 0169-1317
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 Elsevier B.V.
Deposited On: 16 Apr 2015 23:25
Last Modified: 16 Apr 2015 23:25

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