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摘要：本课题采用模板法制备纳米球型氧化锌颗粒，用锌盐为原材料，通过催化剂作用以及后期煅烧制备出纳米球型氧化锌颗粒。以紫外吸光性能和粒径大小为指标优化制备工艺，并通过透射电镜和红外光扫描对煅烧前后进行测定。结果表明，制备球型氧化锌颗粒的最佳工艺为，聚合物球粒径为395nm，反应温度为60℃，催化剂用量为200ul，锌盐用量为3%，煅烧时间为3h，煅烧温度为500℃。此时制备出来的球型氧化锌颗粒粒径为647nm左右,紫外吸光性能最优。29438
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毕业论文关键词：模板法 纳米球型氧化锌 紫外屏蔽性能
Preparation and Properties of Nano UV Shielding Agent
Abstract: This paper mainly adopts a certain proportion of styrene, ammonium persulfate, acrylic acid, polyvinyl pyrrolidone (PVP) fully stirring and nitrogen into the and oil bath heating to a certain temperature, later joining initiator potassium persulfate, isothermal reaction 10 hours, after centrifugation washing system for preparation of anionic PS template. Take 0.1ps template (solid content is 1%) by adding a certain amount of water, with magnetic stirring heating to 60 ℃, constant temperature reaction 1 hour, with injection machine into a certain amount of Zn(NO3)2•6H2O, isothermal reaction 3 hours, with injection molding machine into a certain amount of ammonia, reaction for 2 hours, centrifugal washing and finally into the muffle furnace up to calcined at a certain temperature for 3 hours. The results showed that the nano zinc oxide hollow spheres of the optimum preparation process for, PS template particle size in 393-399nm, Zn(NO3)2•6H2O dosage for 0.2975g and ammonia of the injection volume 200ul, calcination temperature to 500 ℃, then prepared zinc oxide hollow spheres UV shielding performance is the best.
Keywords: Template Nano-type zinc oxide UV Shielding Agent
目录
1 绪论 1
1.1 纳米材料.. 1
1.1.1 纳米材料的发展 ..1
1.1.2 纳米材料的制备.2
1.1.3 纳米材料的光学性质 2
1.2 紫外屏蔽剂..3
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