MIL-HDBK-1110
The resin is responsible for many of the properties of
the coating. Thus, coatings are usually identified generically
by the types of their resins. Important film properties related
to the resin chemistry are:
a)
Mechanism and time of curing
b)
Performance in different environments
c)
Performance on different substrates
d)
Compatibility with other coatings
e)
Flexibility and toughness
f)
Weather resistance
g)
Adhesion
h)
Ease of topcoating and repair
i)
Application properties (wetting, build, pot life,
etc.)
2.1.3
Pigment. The pigment constitutes the solid portion of
a wet paint. Pigments are insoluble in the vehicle and are
generally heavier than the liquid vehicle portion. They may
settle to the bottom of a container upon prolonged standing.
Natural earth pigments are generally much more stable to light
than synthetic organic pigments.
a) The pigment portion of coatings contributes to the
following desirable properties:
(1)
Opacity (hiding)
(2)
Color
(3)
Corrosion inhibition
(4)
Weather resistance
(5)
Moisture resistance
(6)
Level of gloss and hardness
(7)
Film build and reinforcement
8
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