Titanium dioxide (TiO2) is widely used in the paint industry as a white pigment. To reduce the high cost of TiO2, mineral fillers such as different calcites are usually added to the paint. However, this addition affects the quality and properties of paints. In the present article, the precipitated Vietnam Calcium Carbonate (PCC) and the Ground Vietnam Calcium Carbonate (GCC) that coated with the stearic acid, were added into the epoxy paint at two different volume concentrations as fillers. The optical observation and paint properties such as the reflectness, the hardness, the scratch and the bending resistance and wear properties were investigated. Results showed that paint properties depended on the PCC or GCC content in the paint. GCC filler (10 wt %) raised the reflectance of the pure epoxy paint to 85%, relatively. The best filler for increasing the hardness and the scratch test was 20 wt % PCC. The specimen with 10 wt % PCC showed the best wear resistance. The presence of the coated calcium carbonate could change the wear mechanism from cutting to gouging.
We offers a wide range of Vietnam Calcium Carbonate of different particle size assuring that our different clients will receive suitable quality material with cost-efficiency. We have the purest and brightest source of calcium carbonate and exploit the high standard of sustainability with uncoated and coated Calcium Carbonate (Stearic acid coating Calcite Powder). Raw materials are chosen carefully and the production process is conducted in ISO standard factories to ensure the most consistent quality for end-users.
Uncoated calcium carbonate is natural calcium carbonate obtained from high purity Vietnam lime stone. It is used in many industries as filler to reduce production cost. We can provide a wide range of particle size from 5 to 450 microns.
Coated calcium carbonate is made from uncoated calcium carbonate with 1% stearic acid. It is used for replacing some expensive polymers and additives to reduce production cost with particle size ranging from 5 to 45 microns.