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Pearlescent Pigments
Pearlescent Pigments belong to the same group of
fluorescent and phosphorescent pigments. Pearlescent pigments are special
kind of pigments. These pigments are also known as Pearl Pigments. The name
Pearl has given to these pigments because they possess pearl like shine,
when these pigments are covered with any metallic oxide out of mica slice.
These pigments have high transparent appearance, more smoother plane and
higher refractive co-efficient than other common pigments. These pigments
simply look like flat powder.
 Characteristics
of Pearlescent Pigments |
- Have high acid resistance capacity.
- Have high alkali resistance capacity.
- Can bear temperature up to 800 degree C.
- No spontaneous combustion nor support the combustion.
- Bad conductor of electricity.
- Have good light stability.
- Some products of these pigments can have the ability to resist the
ultra-violet radiation.
- Not harmful for human beings as these are used to pack materials of
food.
| Shinning
intensity of Pearlescent Pigments |
"Multiple Reflection" process is used to
produce pearl like shine in these pigments. Based on this method,
Pearlescent pigments are mixed with greater transparent materials.
Sometimes, to get suitable light in the materials, these pigments are mixed
with transparent pigment or dye. Pearlescent pigments should not be mixed
with opaque objects or with such pigments those have better coverage,
because these pigments will affect the pearl shine. By adding few carbon
black powder (say 0.01%), the shinning effect of these pigments can be
increased.
| Application
of Pearlescent Pigments |
The chemical, mechanical and thermal properties of
pearlescent pigments are excellent. Due to these excellent properties,
today, pearlescent pigments have universal applications. The products get a
new color quality through these pigments. These pigments are completely safe
for eatable purpose, hence, these are used for food packing purpose. In toy
industries also, these pigments are used. These pigments are insoluble in
water and commonly don't contain any heavy metals. Therefore, these are
considered as environment friendly. In manufacturing of transparent as well
as semi-transparent plastic products, these pigments are used. The
Pearlescent pigments are also used in coating industries in a large extent.
Any kind of monochromatic coating mixing is used with these pigments and
pearl light coating is produced. These pigments are also used in printing
industry. Printing-ink having of different color and luster are manufactured
with these pigments.
