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What is pigment? Give its two functions
1 Answer
written 5.5 years ago by |
Pigment: Solid substance which is essential constituent of paint It provides capacity, strength & desired color to paint. It also gives pleasing look. It gives protection to the surface by reflecting UV rays It increases resistance towards moisture.
Example:
White - Zn & Ti oxide
Red - Iron oxide
Green - chromium oxide
Pigment should be opaque, nontoxic, chemically inert & freely mixable with oil.
Vehicle: It is called as drying oil. It is film forming constituent of paint. These are esters of fatty acids generally present in animal & vegetable oil like linseed & soya bin oil
Functions: