Study on the Functionalized Graphene Modified Waterborne Polyurethane Materials

A new type of waterborne polyurethane (WPG) is fabricated using the functionalized graphene. The mechanical properties, wear resistance, and heat aging resistance of the modified polyurethane materials were tested. The results show that the initial thermal decomposition temperature (Td5) of polyurethane films increased from 217°C to 244°C, the mechanical property of modified polyurethane film firstly decreases and then increases with the increase of functionalized grapheme. In addition, the wear resistance of modified polyurethane film decreases following the increase of functionalized grapheme. Furthermore, the heat aging resistance is best when the content of functionalized grapheme is 0.02% (wt). The centrifugal stability test shows when the content is less than 0.04%, the products are stable.