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Coated Calcium Carbonate Powder

Our high-performance Coated Calcium Carbonate Powder is meticulously surface-treated with a precise layer of organic fatty acid (Stearic Acid). Uncoated calcium carbonate naturally possesses hydrophilic (water-loving) properties, which causes severe dispersion issues and moisture-induced defects during high-temperature polymer compounding. The surface coating chemically transforms the particles, rendering them entirely hydrophobic (water-repellent) and highly organophilic. This crucial surface modification dramatically lowers the surface tension of the mineral powder, allowing it to rapidly wet-out and fuse homogeneously with organic polymer resins like Polypropylene (PP), Polyethylene (PE), and PVC. It acts as an active coupling agent, radically improving the interfacial adhesion between the inorganic filler and the synthetic polymer matrix. The result is a substantial increase in the impact resistance, tensile strength, and elongation at break of the final plastic or rubber product. By utilizing Coated Calcium Carbonate, manufacturers can safely maximize their filler loading percentages without sacrificing the mechanical integrity of their product. It significantly reduces extruder torque, lowers machine wear, and completely eliminates the risk of die-drool or surface blistering. It is the definitive choice for masterbatches, PVC compounding, and high-end automotive plastics.