Study of POSS Modified Polyurethane Aqueous Dispersions Emulsions

Abstract:

Polyurethane aqueous dispersions chemically doped by polyhedral oligomeric silsesquioxane(POSS) were prepared in this paper.The resulting polyurethane dispersions and their thin films were characterized and investigated by transmission electron microscopy(TEM),scanning electron microscope(SEM) based on the particle size measurements,thermo gravimetric analysis(TGA),UV-Vis and basic mechanical tests.The results show that the POSS has good compatibility and synergistic enhancement performance with polyurethane dispersions,and the resulting doping polyurethane dispersions emulsions have good solution stability at room temperature (> 90 d).By introducing POSS,polyurethane dispersions films have enhanced heat resistance,water resistance and mechanical strength as well as much more UV resistance than pure polyurethane film.