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制备高质量的大尺度聚-α-甲基苯乙烯微球是激光惯性约束聚变靶丸的关键技术之一。针对其工艺过程,建立了双重乳液固化过程中微球直径随时间变化的理论预测模型。采用该模型,对PAMS质量分数为6%微球固化过程中直径随时间的演化进行了预测;探讨了油相密度对公式精确性的影响。结果表明:预测结果与实验数据吻合较好;因本体系油相密度匹配较高,所以由物质组成的改变引起的固化过程中油相密度的变化,对预测精度影响不大。
Preparation of high-quality large-scale poly-α-methylstyrene microsphere is one of the key technologies of laser inertial confinement fusion pill. In view of the process, the theoretical prediction model of the diameter of the microspheres with time during the double emulsion solidification was established. The model was used to predict the evolution of the diameter of the microspheres with the mass fraction of PAMS 6% over time. The influence of oil density on the accuracy of the formula was also discussed. The results show that the predicted results are in good agreement with the experimental data. Due to the high oil density matching, the change of oil density caused by the change of material composition has little effect on the prediction accuracy.