配方变量对水性金属直接涂料性能的影响.pdf

1、Influence of Formulation Variables on thePerformance of Water-BasedDirect-to-Metal CoatingsAndy BalgemanR&D Technical ManagerEPS Engineered Polymer SolutionsTrends and performance challenges in waterborne direct-to-metal coatingsPerformance properties a balancing actIntroduction to EPS 100 g/L DTM P

2、olymerAdditives experiment outlineResults and discussionConclusionsAgendaThe data in this presentation represents typical values.Since application variables are a major factor in product performance,this informationshould serve only as a general guide.EPS assumes no obligation or liability for use o

3、f this information.Direct-to-Metal CoatingsIndustry trends Customer preferences driving transitionfrom solvent-borne to waterborne systems Current challenges facing alkyd resins Addressing ever-changing VOC regulations Reducing applied costs Obtaining anti-blocking properties whilemaintaining corros

4、ion resistance Balancing multi-substrate adhesion withhigh corrosion resistancePerformance Needs of aDirect-to-Metal Coating Coating needs to be block resistant forquick return to service Coating needs to adhere to a variety ofmetal substrates Coating needs to protect the substratefrom corrosion It

5、is desirable to have a coating that retainscolor and glossCommercial Direct-to-Metal Coating EvaluationPerformance Attribute Balance20 commercial high glossDTM coatings ranging from50-250g/L were benchmarked.Gap in performance forblock resistance andcorrosion resistance1513EPS 100 g/L VOCCorrosion v

6、s.Block ResistanceEPS 50 g/L VOCCorrosion(hrsSalt Spray)Block Resistance RatingDirect-to-Metal Coatings Challenges(Corrosion and Block Resistance)840Block Rating300hr B117 2mil DFTDecreasing corrosionresistance with improvedblock resistanceDirect-to-Metal Coatings Challenges(Corrosion and Adhesion)A