Novel light stabilisers for waterborne epoxy coatings

An experiment was conducted to show that EV-EP-5 can be used directly and homogeneously disperses very well in waterborne epoxy resin and water systems. Screening design was used to identify factors that affect residual in mixing with three types of light stabilizers and two types of solution systems. After mixing together, filter paper is used to test. A mathematical model derived from data indicates all factors, three light stabilizers and two solution systems. If the residual is less, the performance is better. On the other hand, it can be used directly and homogeneously dispersed in waterborne epoxy resin and water systems. According to screening design, EV-EP-5 is the best performance in both systems. The prediction profiler shows that effect of EV EP-5 and film thickness after weathering test for 110hr. The data also suggested that by increasing 3% EP-5 in waterborne epoxy coat and 20μm coating thickness can get the best performance.