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Ground Calcium Carbonate:

According to the need for different particle size requirements of :
Ground Calcium Carbonate (GCC) , also named as Heavy Calcium Carbonate, (China Standard: HG/T 3249-2001, Heavy Calcium Carbonate and Actived Heavy Calcium Carbonate for industrial use.)
 (China Standard: HG/T 3249-2013 Heavy Calcium Carbonate for industrial use. )
Standard HG/T 3249-2013 is seperated as:
i) HG/T3249.1-2013 For papermaking industrial use;
ii) HG/T3249.2-2013 for paint and coating industrial use;
iii) HG/T3249.3-2013 for plastic industrial use;
iv) HG/T3249.4-2013 for rubber industrial use.
According to high fineness of particle size, we call as Ultrafine Ground Calcium Carbonate, or, Nano-calcium carbonate (NGCC); (China Standard: GB/T 19590-2004)

Calcium Carbonate for Plastic.

Calcium Carbonate is a popular mineral fillers used in the plastics industry. It is used to manufacture unplasticized polyvinyl chloride (uPVC) drain pipe, uPVC window profile, PVC cables, ABS, and for other plastic industries as ingredients.

Calcium carbonate (CaCO3) is widely available around the world, easy to grind or reduce to a specific particle size, compatible with a wide range of polymer resins and economical. As an additive in plastic compounds, CaCO3 helps decrease surface energy and provides opacity and surface gloss, which improves surface finish. In addition, when the particle size is carefully controlled, CaCO3 helps increase both impact strength and flexural modulus (stiffness).

Calcium carbonate may be used with a myriad of thermoplastic resins. Polypropylene compounds are often filled with calcium carbonate to increase rigidity, an important requirement for operations at high temperatures. In PVC, calcium carbonate is used with flexible compounds such as tubing, wire and cable insulation, latex gloves, trash bags and in rigid compounds such as extruded pipes, conduits and window profiles.

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