原子能科学技术
原子能科學技術
원자능과학기술
ATOMIC ENERGY SCIENCE AND TECHNOLOGY
2014年
4期
751-756
,共6页
刘一杨%李洁%李婧%苏琳%刘梅芳%陈素芬%张占文
劉一楊%李潔%李婧%囌琳%劉梅芳%陳素芬%張佔文
류일양%리길%리청%소림%류매방%진소분%장점문
聚苯乙烯%聚乙烯醇%臭氧改性%空心微球
聚苯乙烯%聚乙烯醇%臭氧改性%空心微毬
취분을희%취을희순%취양개성%공심미구
polystyrene%polyvinyl alcohol%ozone modification%hollow microsphere
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。
採用聚苯乙烯微毬臭氧化改性技術和攪拌槳葉輪結構優化技術,提高聚苯乙烯(PS )與聚乙烯醇(PV A )之間的作用彊度,優化體繫容器內的流場運動環境,製備瞭500~700μm直徑的PS-PV A雙層空心微毬,併攷察瞭液滴初始密度與溶劑密度匹配關繫對最終PVA塗層均勻性的影響。結果錶明,固化溫度為37℃、溶劑-液滴初始密度差在0.010 g/cm3附近及固化溫度為20℃、溶劑-液滴初始密度差在0.015~0.020 g/cm3附近能穫得較好的PVA壁厚均勻性。
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 .