Due to the manufacturing process, crystal structure and surface treatment method is different, different types of titanium dioxide with different chemical composition and properties,Polyester epoxy powder coating of chemical reactivity and dispersion effects are also different,Powder coating of the gel time and level of molten liquid has obvious effect,Coating of liquidity, luster, color, and also has effect on the resistance to impact.

　　Data show that,anatase titanium dioxide prepared power coating have the activity of large,short gel time and level of molten liquidity small, poor film smoothness, gloss, low than the rutile type titanium dioxide.

　　The anatae titanium dioxide color include neutral and colours,the neutral is black,white and between the two different shades of gray.The color in black and white series the lightness of the reflectivity of representative object.The higher the reflectivity is close to white, the lower the close to black.Color series refers to the various color besides white black series.Spectrum of different wavelengths on the vision performance for different color, such as red, orange, yellow, green, blue, purple, etc.Clear exactly a certain color, must consider the color of the three basic attributes,that is hue, saturation and brightness,The three in visual form a unity of the total effect.

　　Hue is in the object reflected light wavelength advantage to decide,The basic characteristics of decision color is hue,Different wavelengths have different color feeling.Anatase titanium dioxide color’s saturation is a degree of bright color.Hue, lightness and saturation is the three basic attribute of color, the color is only the difference of brightness, and there is no hue and saturation of these two attributes.

　　The mixture of coating color follow a subtractive process principle,Primary colors are yellow, green, purple, their complementary color is blue, red, and green.So-called complementary the two colours mixed in certain proportion to get white color, red color is cyan, yellow color is blue, green color is purple.