摘要: Polyamide 1010 is a γ-radiation crosslinkable polymer. After irradiation, it is possible to raise its service temperature up to 240℃ . Network formation greatly changes the crystallization behaviour of the polymer. In the present work, DSC was used to examine its isothermal crystallization kinetics. It is found that in addition to the necessity of more undercooling and the lowering of crystallization rate, the primary crystallization stage of the irradiated polymer is shortened. This effect is more evident increasing radiation dose and content of enhanced difunctional crosslinking agent.However,the crystallization mechanism of the orimary stage is not changed as evidenced by the constancy of Avrami exponent.The lamella end surface free energy σecalculated according to Hoffman's equation is very sensitive to γ-radiation.It increases abruptly in 2-3 fold even though the radiation dose is not high enough.The origin of this phenomenon may be accounted for in terms of network structure of the polymer.