The Study Of Waterborne Polyurethane Modified By Graphene-based Hybrid Materials

In recent years, as global warming and environmental pollution is getting worse, people began to focus on the problem of environmental safety issues,In particular, the problem of marine fouling has been attracted widespread attention.Traditional organotin self-polishing antifouling paints cause the pollution of marine biological environment.Waterborne polyurethane has the advantage of environment-friendly, safe and clean. It is the more rapid development of new green materials However, It also has the shortcoming of water resistance, heat resistance, poor mechanical properties. People use waterborne polyurethane modified by nano-titanium to improve its anti-fouling properties. Nano-titanium is easy to form the light-generated electron-hole pairs during the reaction of photocatalytic, making TiO2 lower utilization.In order to further improve the performance of waterborne Polyurethane, This article was prepared by hydrothermal synthesis of waterborne polyurethane modified by graphene-based hybrid materials. Based on the higher conductivity of graphene, electronic can be exported in a time. so it can suppress the recombination of electrons and holes in the reaction, improving the efficiency of photocatalytic reaction. Thereby it can enhance the antifouling properties of modified waterborne polyurethane coatings.The graphene group/titanium dioxide was added to the aqueous polyurethane,By comparison Composite coating degradate methylene blue. The resurts showed that different GT content, photocatalytic degradation of composite coatings are also different. when GT content is five percent, the photocatalytic properties of composite coating is the best; on this basis, making the partial reduction of graphite oxide, preparation polyurethane coating modified by acidification graphene/titanium dioxide, make the degradation experiments of methylene blue. The results showed that acidification graphene coating has a higher degradation rate in the light conditions, and coating has excellent antifouling performance.