FABRICATION OF TRANSPARENT PU/ZrO_2 NANOCOMPOSITE COATINGS WITH HIGH REFRACTIVE INDEX  

作　　者：徐坤 

机构地区：[1]Department of Materials Science and Advanced Coatings Research Center of Ministry of Education,China,Fudan University

出　　处：《Chinese Journal of Polymer Science》2010年第1期13-20,共8页高分子科学（英文版）

基　　金：supported by the Shanghai Leading Academic Discipline Project(No.B 113)

摘　　要：Transparent ZrO2-polyurethane nanocomposites with high refractive index were prepared by dispersing ZrO2 nanoparticles in a polyurethane matrix via ligand molecule engineering. TEM showed that the inorganic particles were well dispersed within the polymeric network with no significant macroscopic agglomeration. By controlling the phase separation it was possible to obtain transparent zirconia nanostructured coatings, characterized by improved mechanical and thermal properties. UV-Vis spectra indicated that the coatings still maintained transparency in the visible light. The refractive index of the UV-cured films depends linearly on the ZrO2 content and varies from 1.475 to 1.625 （20 wt%） at 633 nm. These coatings could find advanced applications in coatings of optical and electronic devices.Transparent ZrO2-polyurethane nanocomposites with high refractive index were prepared by dispersing ZrO2 nanoparticles in a polyurethane matrix via ligand molecule engineering. TEM showed that the inorganic particles were well dispersed within the polymeric network with no significant macroscopic agglomeration. By controlling the phase separation it was possible to obtain transparent zirconia nanostructured coatings, characterized by improved mechanical and thermal properties. UV-Vis spectra indicated that the coatings still maintained transparency in the visible light. The refractive index of the UV-cured films depends linearly on the ZrO2 content and varies from 1.475 to 1.625 （20 wt%） at 633 nm. These coatings could find advanced applications in coatings of optical and electronic devices.

关 键 词：Coatings NANOCOMPOSITES PHOTOPOLYMERIZATION Refractive index ZRO2 

分 类 号：TB383.1[一般工业技术—材料科学与工程]