What is the difference between talc and calcium carbonate in plastics?
Talc and calcium carbonate are used as fillers in plastics, mainly to increase dimensional stability; Increase material stiffness; Increase the heat resistance of materials; There are four aspects to reduce material cost. Talc powder shape is flake, has higher stiffness, dimensional stability and heat resistance temperature, enhance the effect of good, and calcium carbonate is generally granular, so its stiffness and other aspects of talc powder, but its price is cheaper, and high whiteness, while the impact toughness of plastic is small; In addition, talc has a nucleation effect on polypropylene, while calcium carbonate has no obvious effect in this respect.
