PIGMENTS -Types

PIGMENTS -Types

Pigment ussually divide into some categories : White and colored pigment; metallic pigment; and functional pigment.
White pigments : lithopone and titanium dioxide
Colored pigments : red/yellow - iron oxide, blue/green-phtalocyanine, black-carbon or lamp black.
Metallic pigment : metallic appearance-alluminium flake, pearlescene-titania and surface modified talc
Functional pigments : filler-limestone and clay, UV stabilizer-lithopone and zinc sulfide, conductive ability-nickel/copper/silver powder and barium titanate.

Pigment (Colorant)

Pigments are solid particle that are dispersed in paints to provide characteristics such as, color, opacity, durability, mechanical strength, and corrosion protection for metallic substrates. 

Pigments may be inorganic and organic materials.

Organic pigments are used primarily for decorative purposes, while inorganic materials are used for protective properties.

Extenders are used together with pigments to modify the properties of the paint. The extender has little color strength compared to pigment.

Pigments have to be uniformly dispersed in the binder to provide good appearance. They have to be in suspension or be easy to disperse if it is settle.

A wide variety of coloring agents can be used to provide a considerable range of colors. The number of pigments used and the amount of each is related to color, hiding, and many other film properties. 

What is Paint??

Paint has been used for art for thousands of years. The oldest civilizations such as the Greeks, Romans, and Egyptians used paint
made with a mixture of mineral pigments (copper, iron, etc.),
beeswax, and resin and then fixed with heat. The caveman use to decorated their cave with the picture of their dailiy activity (like hunting).

In nowadays modern live, paint has lot of function, as protection, decorative, and some special purpose.
As protection, paint will protect the material that its covered by giving insulation or barrier from the environtment (water, chemical, UV, etc.), so the material will not be affected by the environment.
As decorative purpose, paint gives color, gloss, or texture to the product that it is applied.
And some time paint was applied to have some special purpose such as corrosion resistance, insulation, wear resistance, etc.

Paint was made by four component : resin, pigment, solvent, and additive.