Journal of South China University of Technology(Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (11): 104-108.

• Materials Science & Technology • Previous Articles     Next Articles

Preparation and Performance of Solar Reflection Material NaZnPO4

Su Da-gen  Fu Wen-xiang  Zhong Ming-feng   

  1. School of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2011-05-10 Revised:2011-08-14 Online:2011-11-25 Published:2011-10-03
  • Contact: 苏达根(1948-) ，男，教授，博士生导师，主要从事生态环境材料与土木工程材料研究． E-mail:dgsu@ scut.edu.cn
  • About author:苏达根(1948-) ，男，教授，博士生导师，主要从事生态环境材料与土木工程材料研究．
  • Supported by:

    广东省重大科技专项( 2010A080804018)

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Abstract:

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-tozinc 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%.

Key words: direct precipitation, heat treatment, sodium zinc phosphate, solar reflection