CAJ | 학술논문

采用聚苯乙烯微球臭氧化改性技术和搅拌桨叶轮结构优化技术，提高聚苯乙烯（PS ）与聚乙烯醇（PV A ）之间的作用强度，优化体系容器内的流场运动环境，制备了500～700μm直径的PS-PV A双层空心微球，并考察了液滴初始密度与溶剂密度匹配关系对最终PVA涂层均匀性的影响。结果表明，固化温度为37℃、溶剂-液滴初始密度差在0.010 g/cm3附近及固化温度为20℃、溶剂-液滴初始密度差在0.015～0.020 g/cm3附近能获得较好的PVA壁厚均匀性。
채용취분을희미구취양화개성기술화교반장협륜결구우화기술，제고취분을희（PS ）여취을희순（PV A ）지간적작용강도，우화체계용기내적류장운동배경，제비료500～700μm직경적PS-PV A쌍층공심미구，병고찰료액적초시밀도여용제밀도필배관계대최종PVA도층균균성적영향。결과표명，고화온도위37℃、용제-액적초시밀도차재0.010 g/cm3부근급고화온도위20℃、용제-액적초시밀도차재0.015～0.020 g/cm3부근능획득교호적PVA벽후균균성。
Adopting ozone modified polystyrene (PS) microsphere technique and optimi-zing technique of the structure of lobed wheels ,the interaction between PS and poly-vinyl alcohol (PVA) was improved ,and the flow field movement was also ameliorated . PS-PVA double hollow microspheres with diameter of 500-700 μm were prepared ,and the influence of density matching between initial emulsion particle and solvent on the uniformity of PVA layer was systematically studied . The results show that density contrast of solvent-particle about 0.015-0.020 g/cm3 at 20 ℃ and 0.010 g/cm3 at 37 ℃can form well homogeneous PVA layers .