Diamond
K's plastic-chemical grade calcium sulfate dihydrate
is a high purity product manufactured specifically
for the chemical and plastics industries. The
product quality, sizing, and formulation are
specifically tailored to your needs
and specifications.
Calcium
sulfate fillers can offer the following advantages:
Less wear and abrasion of equipment
because of their relative softness (2.0 to
2.5 on MOHS scale.)
Non-toxic CaSO4 is used in food and pharmaceutical
formulations.
Improved fire retardancy has been noted when
CaSO4. 2H20 was used.
Less shrinkage occurs, especially in polyesters
and epoxies, when compared with unfilled resin
systems.
Equal tensile strength for equal filler loading.
Lowers formulation costs while maintaining
physical properties.
A comparison of CaSO4 with CaCO3 fillers shows
important advantages for CaSO4
Improved impact strengths were
obtained in thermoset resins.
In cellular vinyl and rigid vinyl extrusions,
CaSO4 has the advantage of higher filler loading
while maintaining lower compound cost and smoother
extrudate.
CaSO4 also gives more uniform cell structure
in cellular vinyl extrusions.
Greater translucency was observed in epoxy
resins.
Calcium
sulfate fillers offer four advantages to the
compounder and purchasing agent
