STUDY ON CURING OF NOVOLAC EPOXY-RESIN - POLYAMIDE HARDENER SYSTEMS

The optimization of proportions of novolac epoxy resin, Dobeckot E4 an d polyamide hardener, EH411 has been established by DSC and the data i ndicates that resin-polyamide, 100:40 and 100:50, appear to be optimum where 'extent of cure' is maximum. The kinetic parameters for these f ormulations have been evaluated using isothermal and dynamic modes by employing DSC. The rate constants have been evaluated for curing proce ss of these formulations using isothermal DSC mode in the temperature range of 70-degrees-90-degrees-C. These have also been predicted at 20 -degrees+/-1-degrees-C (room temperature) by extrapolating the data ob tained at elevated temperatures. A comparison of the predicted values with the experimental values shows that there is a good agreement betw een them.