The curing process and cure kinetics of a high-temperature cured adhesive foam have been investigated by dynamic differential scanning calorimetry (DSC) experiments. In the DSC measurements，heating rates of 1, 2.718, 7.389 and 20 K·min^-1 were used such that lnβ would be 0, 1, 2 and 3, therefore, values of T₁ and ΔT could be easily and quickly determined so as to estimate the apparent activation energy more easily. Linear relationships have been proven to frequently exist between T_p with lnβ by means of a series of reference data from papers about heating cure, thermal decomposition and crystallization of some polymers. The obtained linear equation of T_p versus lnβ can be used to explain some laws for higher or lower of apparent activation energies (E_a), and the apparent activation energy (E_a) can be quickly determined.

adhesive foam  /  curing process  /  apparent activation energy  /  T_p-lnβ extrapolation method  /  method of mathematical limit