用于防护涂料应用的抗紫外线环氧树脂的评估

Advanced MaterialsEvaluation of UV Resistant Epoxies for Protective Coating ApplicationsMitch BuchananTechnical Account Manager, InfrastructureHuntsman Advanced Materials▪Safety Share ▪Experiment purpose and overview▪Low yellowing epoxies▪Experiment plan▪Evaluation results▪System properties▪QUV-A results▪Conclusion and questionsAgendaCTT Summit2Safety ShareCTT Summit3Experiment purpose and overview4▪Epoxy based protective coatings –▪Typically provide excellent adhesion, chemical resistance, strength, and durability▪Limited gloss retention and yellowing resistance under UV exposure ▪Most common epoxides have aromatic chemical structure▪In use often aliphatic polyurethane, polyurea or acrylic topcoats are specified▪Cycloaliphatic resins and hardeners allow formulation of epoxies for maximized UV stability▪Cycloaliphatic systems have better gloss retention and reduced yellowing compared to standard aromatic epoxies but are often hindered by slow cure times without heat▪Low yellowing epoxy