Nghiên cứu đặc trưng và tính chất của màng sơn polyurethan chứa nano CeO2‐TiO2

Abstract

AbstractPolymer nanocomposites are relatively new class of materials. Incorporation of inorganic nanoparticles into a polymer matrix can significantly influence the properties of the matrix. The obtained composite might exhibit improved thermal, mechanical and optical properties. In this study, the CeO2–TiO2 nanoparticles have been applied to modify properties of polyurethane matrix in order to improve the ultra‐violet (UV) absorption property of polyurethane thin films. The interdependence of mechanical properties, UV absorption property and the dispersed concentration of CeO2‐TiO2 nanoparticles were investigated. Results showed that, the mechanical properties of polyurethane thin films coating CeO2‐TiO2 nanoparticles in testing conditions such as film‐forming ability, bonded coating and hardness, modulus, adhesion, impact resistance almost unaffected when the containing CeO2‐TiO2 nanoparticles ≤2 %. The survey sample was qualified; the scratches do not change the composition CeO2‐TiO2 ≤ 1 %. Samples containing 0.2 % CeO2‐TiO2 nanoparticles showed the best resistance to discoloration and most influential causes less of gloss paint. The aim of the present work is to investigate the mechanical properties and UV absorption property of CeO2‐TiO2 nanoparticles/urethane thin films. It is expected that the CeO2‐TiO2 nanoparticles would enhance the UV absorption properties of resulting CeO2‐TiO2 nanoparticles/urethane thin films.