Controlled Preparation and Characterization of Titanium Series Functional Pigment and its Application in Coatings

Abstract:

In our recent work, we synthesize several spherical rutile TiO₂ powders with different average particle size though hydrothermal method using TiCl₄ under lower temperature in a shorter reaction period. Afterwards, solar heat-reflection coatings were prepared by using the TiO₂ as pigment. The TiO₂ powders were characterized by XRD to determine the phase of crystal. The morphology and particle size were observed by using SEM, and the spectral reflectance of the powder samples and coatings were measured using UV/VIS/NIR spectrophotometer. In order to measure the temperature on the back of coatings, the self-assembled equipment which consisted of solar lamps and surface temperature sensors connected to a data logging system was invented. The test results showed that the shape, average particle size and size distribution were closed-packed state and a bigger mean particle size had higher reflectance intensity. Meanwhile, the reflectance was closely connected to the particle size distribution. Actually, the coatings dispersed TiO₂ powder with desired size distribution had excellent performance.

• Periodical: Key Engineering Materials (Volume 726)
• Pages: 308-315
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.726.308
• Online since: January 2017
• Authors: Yu Deng*, Jian Xun Zheng, Qiang Qiang Wang, Wei Bo Yang, Song Song Zhang
• Keywords: Characterization, Solar Heat-Reflection Coating, Spherical Rutile TiO₂

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