A Review of Surface Modification of Aluminum Pigments Applied in Coatings

Aluminum,as one of the important metal pigments,can be easily corroded and tarnished when it is utilized in the waterborne paints.Therefore it is necessary to modify its surface.Now,two methods have been adopted,i.e,corrosion inhibitor and encapsulation.It is reported that the encapsulation could protect the aluminum pigments more efficiently,and is a prospect method for protection of aluminum pigments.The mechanism,methods and development of the aluminum pigment modification are reviewed in this paper.The deficiency of the present methods is pointed out and the improving ways are also suggested.