Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (2): 111-116.doi: 10.3969/j.issn.1000-565X.2013.02.018

• Materials Science & Technology • Previous Articles     Next Articles

Preparation and Reflection Characteristics of ZnO-Fe2O3-Na2O-P2O5 Solar Heat Reflection Materials

Wang Da1,2 Zhou Xi-ya2 Su Da-gen2   

  1. 1.Physics Teaching and Experiment Center of South Campus,South China University of Technology,Guangzhou 510006,Guangdong,China;2.School of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2012-04-06 Revised:2012-06-11 Online:2013-02-25 Published:2013-01-05
  • Contact: 王达(1978-)，男，在职博士生，实验师， 主要从事隔热材料研究． E-mail:wangda@scut.edu.cn
  • About author:王达(1978-)，男，在职博士生，实验师， 主要从事隔热材料研究．
  • Supported by:

    广东省科技重大专项(2010A080804018)

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Abstract:

A kind of solar heat reflection material,Na2O-ZnO-Fe2O3-P2O5,was prepared via coprecipitation and was characterized by means of UV-Vis-—NIR spectroscopy and XRD.The results show that(1)when the Zn/Fe no-lar ratio is 9.00,the phase composition of the products calcined at 700℃ varies with the Zn/P molar ratio(1.52,1.02,0.76 and 0.61),in which a Zn/P molar ratio of 0.61 may result in a single-phase NaZnPO4 structure while the other ratios may result in multiphase structures;(2)when the Zn/P molar ratio is 0.61,the phase composition of the products calcined at 700 oC is independent of the Zn/Fe molar ratio(19.00,9.00,5.67 and 4.00),with all the products being of a single-phase NaZnPO4 structure,however,these products become dark and the reflee-tance decreases with the decrease of the Zn/Fe molar ratio;and(3)at a Zn/P molar ratio of 0.61 and a Zn/Fe molar ratio of 9.00,the products calcined at 500～800℃ are all of a single-phase NaZnPO4 structure,and the Droducts become dark and the reflectance decreases with the increase of the calcination temperature,for instance,the DIl0ducts calcined at 600 and 700℃ are respectively orange and red,with their reflectance being 80.7% and 72.2%,respectively.

Key words: heat reflection material, coprecipitation, near infrared spectrum, pigments

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