Hebei Messi Biology Co., Ltd. stated that hydromagnesite is used as raw material and carbonized to produce magnesium carbonate through a special process. The performance of basic magnesium carbonate used as a transparent rubber filler depends on the chemical purity, the difficulty of processing when combined with rubber, the color and transparency of the sulfurized rubber when combined, and the enhancement effect. These characteristics are often dominated by the physical properties of magnesium carbonate such as particle size, specific gravity, content converted into magnesium oxide, degree of development of crystal structure, and refractive index, which are in turn limited by the crystallization characteristics and shape of magnesium carbonate before conversion. Our special process has become an indispensable condition for manufacturing excellent rubber fillers.
Magnesium carbonate, molecular formula MgCO3, relative molecular weight 467.64, is a white amorphous powder. Its chemical composition is a composite of magnesium carbonate and magnesium hydroxide, and it is relatively stable in the air. Its molecular formula varies slightly with changes in production conditions. It is slightly soluble in water, weakly alkaline, easily soluble in dilute acid, and decomposes and releases carbon dioxide when it encounters acid. It can be decomposed into magnesium oxide and carbon dioxide when heated and calcined.
Hebei Messi Biology Co., Ltd. said that magnesium carbonate is mainly used as a filler and reinforcing agent for transparent or light-colored rubber products. After mixing with rubber, it hardly changes the refractive index of the rubber itself, and can enhance the wear resistance, flexural resistance and tensile strength of the rubber. It is mainly used as an additive for paints, inks and coatings, and is also widely used in toothpaste, medicine and cosmetics industries.