太阳光反射材料NaZnPO_4的制备与性能  

Preparation and Performance of Solar Reflection Material NaZnPO_4

作　　者：苏达根[1] 付文祥[1] 钟明峰[1] 

机构地区：[1]华南理工大学材料科学与工程学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2011年第11期104-108,共5页Journal of South China University of Technology(Natural Science Edition)

基　　金：广东省重大科技专项(2010A080804018)

摘　　要：以Zn(NO3)2.6H2O、H3PO4和无水碳酸钠为原料,采用直接沉淀法获得前驱体,经热处理后制得太阳光反射材料NaZnPO4,采用紫外–可见近红外分光光度计、XRD、TG/DSC对其进行表征.结果表明:原料的磷锌摩尔比对产物的组成起重要的作用,宜控制在1.7～2.0之间;制备NaZnPO4的热处理温度为400～800℃,热处理温度对NaZnPO4的太阳光反射性能有重要影响,其中600℃热处理所得产物的太阳光反射性能最佳,太阳光平均反射率达95.2%.A kind of solar reflection material,NaZnPO4,was prepared by heat-treating the precursor obtained via the direct precipitation,with Zn（NO3）2·6H2O,H3PO4 and anhydrous sodium carbonate as raw materials.The product was then characterized by means of UV-Vis,XRD and TG/DSC.The results show that the phosphorus-to-zinc molar ratio of the raw materials plays an important role in the structure of NaZnPO4,that the appropriate phosphorus-to-zinc molar ratio ranges from 1.7 to 2.0,that the heat treatment temperature for preparing NaZnPO4,which is important to the solar reflection,should be controlled in the range from 400 to 800 ℃,and that the product with the heat treatment at 600 ℃ is of the best solar reflection property,with its average reflection rate being up to 95.2%.

关 键 词：直接沉淀法 热处理 磷酸锌钠 太阳光反射 

分 类 号：TQ050.421[化学工程]