What are the properties

Some indexes of active MgO are different from those of ordinary MgO, for example, it is necessary to have appropriate particle size distribution, and the micro morphology is irregular particles or near spherical particles or flake crystals. Due to its high activity and dispersion, it can even be made into fibrous magnesium oxide, which can be easily compounded with polymers or other materials. Because of its high dispersibility, this kind of ultra-fine magnesium oxide can also be used as filler of paint, paper and cosmetics, filler and reinforcing agent of plastics and rubber, and auxiliary material of various electronic materials.


The activity of MgO is mainly determined by two factors


The first is the particle size of MgO. The smaller the particle size is, the greater the surface free energy is and the higher the activity is; the second is the crystallization of MgO. The more complete the crystallization is, the less defects are, the more stable and the lower the activity is. The higher the calcination temperature, the more complete the crystallization and the lower the activity.


Industrial magnesia can be roughly divided into light magnesium oxide and active magnesium oxide in China


The main industrial application industries of active magnesium oxide are adhesives, glass fiber reinforced plastics, medical rubber plugs, fluororubber and other industries. Active magnesium oxide can be used in the adhesive industry, mainly used in the chloroprene rubber type adhesive, the common are all-purpose adhesive, Dali glue, a90 chloroprene glue, etc., which mainly appear in the decoration material market and shoe material market. The activity value of magnesium oxide for adhesive is ≥ 150, that for FRP is ≥ 60-120, that for medical stopper is ≥ 150, and that for fluororubber is ≥ 120-150. It can also be customized according to different manufacturers, different processes and different formulas to produce the special magnesium oxide suitable for our company.


Ultra fine and highly active MgO is a new kind of fine inorganic material with high function. Superfine powder is generally the aggregate of nano particles, the size of which is between 1 and 2000 nm. Because of its fine particles, it has special functions such as heat, light, electricity, mechanics and chemistry, which are different from the bulk materials. The composite of ultrafine MgO powder with polymer or other materials has good microwave absorption properties. Using superfine MgO powder, it can be sintered at low temperature without using sintering aids. It is expected to be developed into a cutting-edge material for high temperature, high corrosion and other harsh conditions.


It can also be used as a kind of high-quality ceramic materials such as nano-sized alumina, nano-sized magnesium oxide and other materials. High activity magnesium oxide generally refers to magnesium oxide with iodine absorption value above 120mg / g. it is mainly used as accelerator and activator of chloroprene rubber, butyl rubber, nitrile rubber and fluororubber, and is the filler of adhesives, plastics, paints and papers. Ultra fine and highly active MgO has strong adsorption and high surface chemical activity, and can be used as an efficient dissociation adsorbent to adsorb toxic chemicals.