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Development of high dispersed TiO2 paste for transparent screen-printable self-cleaning coatings on glass

  • Yuanhao Wang
  • Lin LuEmail author
  • Hongxing Yang
  • Quande Che
Brief Communication

Abstract

This paper reports a cheap and facile method to fabricate transparent self-cleaning coatings on glass by screen-printing high dispersed TiO2 paste. Three kinds of ZrO2 beads with diameter of 2, 1, and 0.1–0.2 mm were utilized to investigate their influence on the grinding and dispersion of the commercial TiO2 powder in the ball mill. From the SEM images, surface profiler and transmittance spectrum it could be demonstrated that the smallest ZrO2 bead with the diameter of 0.1–0.2 mm was the best candidate to disperse the TiO2 powder into nanoscale size to make the high dispersed TiO2 paste which was the key factor to achieve a smooth, high transparent TiO2 coating. The surface wettability measurement showed that all the screen-printed coatings had super hydrophilic surfaces, which was independent to the surface morphology. However, the coating with the highest transparency showed the lowest photocatalytic activity which is mainly due to the light loss.

Keywords

Self-cleaning coating Powder technology Screen-printing Ball mill process 

Notes

Acknowledgments

The work described in this paper was supported by a Grant from the PolyU Postdoctoral Fellowships Scheme (G-YX4X) and the support from the Sun Hung Kai Properties Group based in Hong Kong.

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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Yuanhao Wang
    • 1
  • Lin Lu
    • 1
    Email author
  • Hongxing Yang
    • 1
  • Quande Che
    • 1
  1. 1.Renewable Energy Research Group (RERG), Department of Building Service EngineeringThe Hong Kong Polytechnic UniversityHong KongChina

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