Pearlescent Pigment | Pearl Pigment
Pearlescent pigments (pearl pigment) are a special type of pigment. It falls into a similar category as fluorescent and phosphorescent pigments. Pearlescent pigment is a pigment that can show pearl shine when covered with metallic oxide out of mica slice. The appearance is transparent and flat powder, having longer diameter, smoother plane and higher refractive coefficient than common pigment.
Pearlescent pigment is able to bear acid, alkali and temperature to 800 C; it has the characteristics such as no spontaneous combustion, no combustion-supporting, no electric conduction and nonarcing; good stability of light; some products are able to bear ultraviolet radiation, suiting used in the open air; it is innocuous to human, can be used for the pack material of food (Stipulating by the rules of the counties)
Pearlescent pigment has many different products according to the color and size. The size of the particle may affect the pearl shine; Bigger the particle is, stronger the shine of the pearl, weaker the power of shade is; smaller the particle is, the shine of the pearl is like silk, and having stronger power of shade.
The shine of pearl is produced by mulriple reflection of light. So the pearlescent pigment being mixed with more transparent material, there can has more beautiful pearl shine. The pearlescent pigment also can have suitable light that mixed by transparent pigment or dye. That should avoid mixed with opaque element or the pigment that has better coverage together, such as titanium dioxide and ferric oxide, so that will not affect the pearl shine. Color pearlescent pigment can produce all kinds of particular shines according to the principle of color mix.
Being add right carbon black, the pearlescent pigment can has good metallic shine. There can has argent shine when the white pearlescent pigment being add 0.01% carbon black. There can has different effects by adjusting the content of carbon black properly
The pearlescent pigment has good decentralization; It can be detract equably by simple mix. Must be avoid use the mixing machine that has high cutting power of long time, that will destroy the particles and effect the pearl shine.
Nonarcing: the pearlescent pigment is not electric and nonarcing. Some powdery mental pigments have much safe restriction when deposited, so they are processed as liquid metallic pigments. But the pearlescent pigment can be processed as powder, so it has its advantage to replace common metallic powder.
The excellent chemical, thermal and mechanical properties of the pigments provide universal application possibilities in paints, printing inks, plastics and many other uses. They provide the products with a new color quality. The pigments are physiologically harmless and can also be used in food packaging and toys for children. Diluted acids and alkalis do not damage them. The pigments are environmentally harmless as they are practically insoluble in water and do not contain any heavy metals. They are generally classified as not detrimental to water quality. The pigments are non-combustible and not self-igniting. They do not conduct electricity and can tolerate temperatures up to 800 C.They can also be used as luster pigments for reactive paints such as radiation cured systems(electron beam curing ,UV curing).Their chemical structure allows for excellent dispersion making them appropriate for water based coatings.
Pearl Luster Pigments used in plastic
The pearlescent pigment can be used in the transparent and semitransparent plastic resin, using The pearlescent pigment will bring a kind of pleasant color and luster vision result. The resin with a better transparency can fully represent the peculiar gloss and color result of the pearlescent pigment As for the resin not very transparent., because of their processing characteristics ,
they can also represent the gloss and color result of the pigment. The pearlescent pigment is extensively applied to plastic products, such as cosmetics container, all kinds of packages, toys, ornament materials, various kinds of membrane,etc..
Pearl Luster Pigments used in Plants
The pearlescent pigment has good dispersiveness and good physics, chemical characteristic, So it is applied to coating industry extensively. No matter which kind of monochromatic coating mixing with the pearlescent pigment can become the coating with pearl light for automobile, locomotive, daily articles, building materials,etc.. Its pearl light and result of metallic luster leave a deep impressions on people. The pearlescent pigment is in the slice structure, therefore it is simple and rapidly to get wet, considering the surface of the polarity of the system and chemical nature of the medium or the solvent. The pearlescent pigment is a king of chip, so it can be easily damaged while being dispersed. usually The pearlescent pigment can be dispersed by mixing briefly. If dispersed in a machiner, it will take only a short time. It is suggested that the pigment be dispersed in advance to make the thick liquid before mixing with the paint materials.
Pearl Luster Pigments used in printing
The pearlescent pigment can not only produce the result of pearl lightbut also keep the original tone in the printing-ink. And it can bring out many kinds of metallic luster results and iridescence gloss results . The pearlescent pigment has already been extensively used for printing the articles such as various kinds of wrapping paper, magazine, poster, fabrics,etc. The pearlescent pigment has extremely good dispersiveness, so generally it can sneak into the low viscosity printing-ink after being mixed slightly . Because the pigment is in layer structure , it can only be mixed slightly when mixing with printing ink. Avoid the strong mechanical treatment, otherwise the surface of the pearlescent pigment will be damaged.