Optical phenomenon pearl pigments

These pearl pigments pigments also consist of mica flake coated with rutile TiO2, but they can create gold, orange, red, violet, blue and green colors when the titanium dioxide layer growing thicker and thicker. These pearl pigment are physical optical interference phenomenons caused by the light distance gap between the light reflected by the titanium dioxide with high refracted index and the one reflected by mica with low refracted index. The reflected color is complement to the transmitted color, so we should pay more attention to mix each other of this kind of pearl pigment for application

For epoxy resins applications, the addition proportion is around 5%-15%. It will depend on the effect that you want to achieve.