Calcium carbonate

Carboplast Ltd. Complements its offer to its clients with Calcium Carbonate.

  • Coated,
  • Uncoated,
  • Talк,
  • In various granules sizes for different sectors and applications.

Calcium Carbonate Application

  • Calcium carbonate is widely used as an extender.
  • Paints – matte emulsion paint where usually 30% by weight of the paint is either chalk or marble.
  • Plastics- typical examples contain around 15 to 20% loading of chalk.
  • Unplasticized polyvinyl chloride (uPVC) drain pipe, 5 to 15% loading of stearate coated chalk or marble.
  • PVC window profile.
  • PVC cables can use calcium carbonate at filling of up to 70 % (parts per hundred parts of resin) to improve mechanical properties (tensile strength and elongation) and electrical properties (volume resistivity).
  • Polypropylene compounds are often filled with calcium carbonate to improve rigidity, a requirement that becomes important at high use The percentage is often between 20–40%.

Thermosetting resins-sheet and bulk molding compounds.