Study on preparation and properties of POSS modified polyurethane aqueous dispersions emulsions

Abstract:

Polyurethane aqueous dispersions chemically doped by POSS were prepared in this paper. The resulting polyurethane dispersions and their thin films were characterized and investigated by TEM, SEM, particle size measurements, TGA, UV-ViS and basic mechanical tests. The results indicated that the POSS have good compatibility and synergistic enhancement performance with polyurethane dispersions, and the resulting doping polyurethane dispersions emulsions have good solution stability at room temperature (> 3 months). By introducing POSS, polyurethane dispersions films have enhanced heat resistance, water resistance and mechanical strength, as well as over much more UV resistance than pure polyurethane film.

Key words:polyurethane aqueous dispersions; POSS; modified; preparation; performance