2011•Xiandai huagongRequires access

Study on hollow glass microspheres coated with titanium dioxide

Rui Ying-yu

Abstract

The surface active treating and process conditions of hollow glass microspheres coated with TiO2 is studied.SEM analysis shows that treating the surface of hollow glass microspheres by sodium hydroxide and silane coupling agent can significantly improve the coating compared with unactivatied microspheres.The coating of TiO2 is compact and uniform.The chemical analysis shows that after activation,the best coating conditions are as follows:pH=6,m[Ti(SO4)2]∶m(microspheres)=1.2∶1.0,4 hours of coating time,70℃ of coating temperature.Under above conditions,the utilization of titanium sulfate is up to 84.3%.

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Key concepts: Coating, Glass microsphere, Microsphere, Materials science, Sodium hydroxide, Titanium dioxide, Chemical engineering, Titanium