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Citation: GAO Jun-Gang, DONG Shuang-Liang, JIANG Chao-Jie, DONG Xi-Hua. Isothermal Curing Kinetics of POSSER and 4,4'-Diaminodiphenylsulfone System[J]. Chinese Journal of Applied Chemistry, ;2008, 25(7): 787-791. shu

Isothermal Curing Kinetics of POSSER and 4,4'-Diaminodiphenylsulfone System

1.
College of Chemistry and Environmentai Science, Hebei University, Baoding 071002

Corresponding author: GAO Jun-Gang,
Received Date: 24 July 2007
Available Online: 29 September 2007
Fund Project: 河北省自然科学基金(2007000204)资助项目 (2007000204)

The isothermal curing kinetics of polyhedral oligomeric silsesquioxane-epoxy resin (POSSER) with 4,4'-Diaminodiphenylsulfone (DDS) as a curing agent was studied by means of differential scanning calorimetry (DSC).Analysis of DSC data indicates that an autocatalytic behavior occurred in the overall curing process,which can be described with the model proposed by Kamal that includes two rate constants,k₁,k₂,and two reaction orders,m and n.Rate constants k₁ and k₂ were observed to be greater when curing temperature increased.The overall reaction order,m+n,is in a range of 1~1.6.The activation energies for k₁ and k₂ were 79.67 kJ/mol and 59.84 kJ/mol,respectively.
- polyhedral oligomeric silsesquioxane-epoxyresin,
- diamino diphenyl sulfone,
- curing kinetics,
- diffe-rential scanning calorimetry
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