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为提高惯性约束聚变(ICF)点火靶尺度(约2mm)聚苯乙烯(PS)空心微球的球形度,研究了油相与外水相界面张力、初始油相质量分数和固化旋转流场转速对PS微球球形度的影响。结果表明,将双重乳液体系外水相中的表面活性剂聚乙烯醇(PVA)替换为聚丙烯酸(PAA)后,油相与外水相之间的界面张力增大了约10倍,PS空心微球的球形度显著提高,球形偏离度小于1μm的微球比例由5%增加至约50%;但是,在较宽范围内改变油相初始质量分数及旋转固化流场转速,对PS微球球形度的影响并不显著,球形偏离度值小于1μm的PS微球比例介于40%~60%之间。
In order to improve the sphericity of polystyrene (PS) hollow microspheres with inertial confinement fusion (ICF) target, the interfacial tension between oil phase and external aqueous phase, the initial oil phase mass fraction and the rotational speed Effect on Sphericity of PS Microspheres. The results showed that the interfacial tension between the oil phase and the external aqueous phase increased by about 10 times after the surfactant PVA (PVA) was replaced by polyacrylic acid (PAA) in the external aqueous phase of double emulsion system. PS hollow The sphericity of the microspheres increased significantly from 5% to 50% with the spherical deviations of less than 1 μm. However, the microspheres with PS spheres were modified in a wide range by changing the initial mass fraction of the oil phase and the rotational curing flow rate. The effect of sphericity is not significant. The proportion of PS microspheres with sphericity less than 1μm is between 40% and 60%.