4

4'-tetraglycidyldiaminodiphenyl methane(TGDDM)epoxy resins are widely used in the fields of aviation and airspace owing to their excellent properties

but the physical properties of the cured epoxy resins depend on their structure

the extent of cure

the curing conditions

the time and temperature of care．So it is necessary to study the curing kinetics in order to obtain the optimal curing process．The Curing kinetics of TGDDM in presence of 3

3'-diaminodiphenylsylfone(DDS)as the curing agent was studies by differential scanning calorimetry(DSC) technique at different heating rates．The kinetic mechanism funetioin was determined using n order reaction and the most probability mechanism functioin method given by Malek respectively

the kinetic parameters of curing reaction were determined with the kinetic analysis of the data obtained by the thermal treatment

then the kinetic model was built．The results indicated that the n order model deduced from Kissinger and Crane equation

by which the parameters of curing reaction

the reaction order and activity energy were obtained

had great distinction with the experimental data．While the Malek analytical mechanism showed that the curing process of the curing reactions followed an autocatalytic reaction．The two—parameter(m

n)autocatalytic model can well describe the curing reaction processs of the studied epoxy resins．The DSC curves obtained using the experimental data showed a good agreement with that theoretically calculated under 5～20 K／min heating rate．The research results will provide theoretical basis for the choice of manufacturing process and the optimization of processing window．