Controlled Release Mechanism of Waterborne Polyurethane Marine Antifouling Coating
In order to meet the environmental requirements for marine antifouling coatings,a series of biodegradable waterborne polyurethanes were synthesized by controlling the amounts of polycaprolactone and polytetramethylene ether glycol.The water absorption and degradation rates of the waterborne polyurethane films increased with an increase in the polycaprolactone segment dosage.Furthermore,the degradation rate of the water-based polyurethane increased with temperature.The release rates of DCOIT in the waterborne polyurethane marine antifouling coatings were positively correlated with its degradation rate.Therefore,by regulating the degradation rate of WPU-PCLX,the release rate of DCOIT in the WPU-PCLX marine antifouling coatings can be controlled.
NETL
NSTL
万方数据
