Optical properties of aluminum powder

Aluminium hydroxide by a light color, high- gloss aluminum metal , its smooth surface that reflects visible light, 60% -90% ultraviolet and infrared light , with the object containing aluminum powder paint coating , the surface of silver white light , this is the aluminum light reflection characteristics.
" Color effect" characteristic of aluminum powder
Since aluminum has a metallic luster and a characteristic to be coated parallel to, a vector containing a transparent pigment , a change in the gloss and color shades with aluminum angle of incidence of the incident light and the viewing angle of the light and color change , such feature is called " two-tone effect ." Aluminum in the coating film are arranged at different levels , when the incident light is irradiated to the layers of aluminum flakes , because by passing through the film thickness of the different type of weakening of the light reflected brightness is obviously different . When the inner light into the white fused alumina suppliers -containing layer and a transparent pigment , the pigment particles become incident through the colored light , and then after reflected different levels of aluminum , light metal , and a hue change will occur , and the viewing angle of the incident light gradual angle from the vertical position to move through the different light color and the number of particles of different particle sizes of aluminum , the hue of light reflected light can occur and the metal endless changes . This feature aluminum has been widely used in the paint, as hammer paint or metallic paint .
Floating aluminum powder characteristics
Pigment with a large variety of aluminum and aluminum paste is floating type , which is characterized by scaly film floating on the surface .
5 Application
Applications
Because aluminum has a silver-white metallic luster, so called aluminum silver or silver , its chemical composition is indeed " aluminum" , not " silver ." Applications: powder coating , ink, plastic masterbatch , printing, paper imitation gold , imitation Gold, gold film , textiles, but the use of water-based paints and paint with a pH of oxidized black. Not recommended for applications requiring a combination of acid rain and the occasion .