UV-Vis-NIR Reflectance Spectra Characterization of AbsorptanceProperties of Colored Powdery Materials

Chem. J. Chinese Universities ›› 2003, Vol. 24 ›› Issue (8): 1482.

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UV-Vis-NIR Reflectance Spectra Characterization of AbsorptanceProperties of Colored Powdery Materials

GUO Hong-You¹, LI Xiu-Yan², WU Nian-Zu³, WANG Ping¹

1. College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
2. Department of Materials Engineering, Beijing Institute of Clothing Technology, Beijing 100029, China;
3. State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Peking University, Beijing 100871, China

Received:2002-04-23 Online:2003-08-24 Published:2003-08-24

Abstract

Abstract: UV-Vis-NIRreflectance spectra were used to characterize the absorptivities of colored powdery materials to solar radiation.It was found that the plots of lg(1/R)(Rmeans the reflectance of coating to solar radiation) against Vcolored/V(TiO₂)(volume ratio of the colored powdery materials to TiO₂) were straight lines in the range of Vcolored/V(TiO₂) less than 0.05.From the slopes and intercepts of the straight lines, the absorption coefficients and the maximum depth of penetration can be measured quantitatively.The method can be applied to characterization of the colored powdery materials.

Key words: Powdery materials, UV-Vis-NIR reflectance spectra, Absorption coefficients

CLC Number:

O657.32

TrendMD:

GUO Hong-You, LI Xiu-Yan, WU Nian-Zu, WANG Ping . UV-Vis-NIR Reflectance Spectra Characterization of AbsorptanceProperties of Colored Powdery Materials[J]. Chem. J. Chinese Universities, 2003, 24(8): 1482.

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UV-Vis-NIR Reflectance Spectra Characterization of AbsorptanceProperties of Colored Powdery Materials

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