Need to pay attention to the purchase of aluminum pigments

Aluminium pigments produce a special hard-to-measure, metallic effect that is resolved by the naked eye through the reflection and scattering of light that strikes the pigment surface. This effect has a combination of many effects. In the procurement of aluminum pigments must be carefully analyzed according to the requirements to identify, the following will make a brief introduction to the purchase points.

Aluminum pigments to buy appearance factors 1. Brightness/Whiteness The coarser the pigment particles, the rounder the shape, the higher the proportion of reflected light, and therefore the brighter and the more white 2 . Glittering refers to the change in whiteness when viewed at different angles. The thicker the pigment particles are, the more round the shape is, and the stronger the glittering effect of different colors is. 3. The finer the hiding power and distinct image pigment particles, the more irregular the particle structure, the higher the proportion of scattered light, the more homogeneous the appearance, and the higher the hiding power, the better the DOI. The higher the distinctness of the image, the more mirror effect the clearer the image of the coating surface will be.

Aluminum pigments to buy the main technical parameters 1. The coarser the particle size of the aluminum particle of the particle size, the brighter the whiteness and the flashiness, and the finer the particle size of the aluminum pigment, the better the hiding power and the distinctness of the image.

2. The particle size distribution of aluminum pigments is not only related to the pigment particle size but also to the particle size distribution system. The narrower the particle size distribution indicates that the more uniform the particle size in the product, the better the optical characteristics.

3. The metal used for surface treatment and particle shape production is ductile, so grinding in a ball mill to grind the atomized ball ** can form flaky particles with a form factor (thickness-to-height ratio) up to 1:50 ~1:500. The particle shape can be irregular (flake type), or completely round (silver circle type).

Silver round pigments are the latest generation of products with excellent optical properties. They use special, very fine materials, and they are manufactured through extremely fine processing techniques.