Calcium carbonate have long been recognized as useful additives for thermoplastics
and particularly in PVC for many applications. Ground calcium carbonate
is generally used as a filler with an interesting ratio performance/price.
Precipitated Calcium Carbonate (PCC) however exhibits a much smaller particle size.
The specific structure and granulometry of PCC (see description)
allows this materials to fullfil additional functions like Processing
aid, impact modification and better weatherability.
PCC is much more than a filler
Precipitated calcium carbonate is a versatile additive for
use in a wide range of plastic and elastomeric applications. Its regular
and controlled crystalline shape and ultrafine particle size together
with the hydrophobic surface coating, combine to the benefit of both polymer
processing and subsequent physical properties.
PCC is one of a unique class of additives which can be classified as
being multi functional providing the end user with an outstanding cost/performance
opportunity.
The main effects of PCC in PVC are listed in the
table below.
Some applications in rigid PVC and plasticized
PVC will be described shortly to show the level of performances achievable
with PCC.
If you need fast and efficient assistance for your problems with
Precipitated Calcium Carbonate, you are welcome to use TechDirect,
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