Paints and coatings products, calcium carbonate ultra-fine white calcium carbonate ultrafine activity

PCC traits Description :: white powder or colorless crystals. Odorless. Tasteless. 825 ℃ decomposed into calcium oxide and carbon dioxide. The release of carbon dioxide dissolved in acid, insoluble and alcohol. There are two types of crystals, one is orthogonal crystal aragonite A hexagonal rhombohedral calcite crystals. Calcite, irritating. Calcium carbonate widely used in plastics, to give the plastics industry attention is not accidental, compared to other non-metallic mineral powder material, calcium carbonate has obvious advantages. 1) cheap either calcium carbonate or calcium carbonate in various non-ore materials is the lowest price, which means that any kind of non-ore materials merely trying to replace the use of calcium carbonate as a plastic filler, rather than to highlight the characteristics of this powder material itself, that makes no sense. 2) good color, easy to color can be light-colored plastics. The downside is that colored plastic color bright enough, in most cases still acceptable. 3) low hardness Mohs hardness of 3, far below the manufacturing and processing machinery and mold the hardness of steel (such as nitriding steel, high speed steel) by filling plastic parts in contact with the device (screw, barrel, etc. Therefore, ) and mold wear lighter. 4) Good thermal stability and chemical stability in the thermal decomposition temperature of calcium carbonate above 800 ℃, in all of plastic processing temperature (300 ℃ or less) thermal decomposition will not occur. Calcium carbonate is a strong base weak acid salt, except in case of an acidic medium, the good chemical stability. 5) easy to dry, no crystal water, moisture absorption easily removed by heating. 6) non-toxic, non-irritating, tasteless, especially in our country calcite, marble, rich limestone resources, you can choose a large room, excellent quality and the vast majority of resources, especially heavy metal content is very low, up to the national sanitary requirements. Contact: Chen Yu Mobile: 15070539588 Tel: 0795-5288016,5288026 Fax: 0795-5219969 QQ: 2058167539 Company official website: www.gfcaco3.com public Micro Signal: brcaco3