利用经典成核理论模型对微细发泡注塑成型的成核机理进行了深入的分析,总结了经典成核理论与实际成核过程存在的差异。主要考虑了聚合物成核前后自由能的改变,对经典成核理论模型进行修正,并将改进的成核理论模型应用于PS/N2发泡模型中,结果表明:修正的成核理论模型能够很好地描述聚苯乙烯的成核过程。 Based on the classical nucleation theory model, the nucleation mechanism of micro-foam injection molding was analyzed in depth. The differences between the classical nucleation theory and the actual nucleation process were summarized. The changes of free energy before and after nucleation of polymer are mainly considered. The classical nucleation theory model is modified. The modified nucleation theory model is applied to PS / N2 foaming model. The results show that the modified nucleation theory model can The polystyrene nucleation process is well described.