POLYFLUO 540 is a very fine grade of micronized
modified fluorocarbon which has been specially processed
for easier dispersion, better gloss, and faster particle
migration. POLYFLUO 540 has been micronized to
a 1-2 NPIRI grind gauge reading which eliminates the need
for prior compounding, grinding or melting.
Due to its very fine particle size, POLYFLUO 540
can be incorporated into most coatings using conventional
mixing equipment. As with Polyfluo 190, POLYFLUO
540 will impart an excellent combination of film
toughness (rub resistance) and lubricity (slip) when
added into printing inks, paints or other types of surface
coatings.
POLYFLUO 540 is recommended for use in offset,
letterpress, ultra-violet, flexo and gravure inks as
well as solvent based paints and coatings. Rub and slip
properties of overprint varnishes are greatly enhanced
when POLYFLUO 540 is added at 1/2-1% loadings.
UV inks and coatings have shown improvement in rub resistance
and slip due to the fast particle migration of POLYFLUO
540 to the ink surface before curing.
Optimum properties for most inks, paints and surface
coatings are usually achieved by adding 1-3% by weight.
The amount will vary depending upon the type of application
and the end use requirements.
At temperatures above 600oF some polymer fumes may
be emitted due to decomposition of the fluorocarbon
polymer. Therefore, smoking should not be permitted
when working with this material.