Magnesium oxide in three special morphologies

　　1. Spherical magnesium oxide

　　Since the spherical powder is easy to achieve tight accumulation, so the compressive ability is strong, and because of its isotropy, so its properties are stable, the current preparation of spherical magnesium oxide is mainly through two methods: magnesium salt as raw material to first obtain the precursor to the preparation of spherical magnesium oxide precursor, the precursor heat treatment to obtain spherical magnesium oxide; After mixing the magnesium oxide powder with the solvent and the binder, the spherical magnesium oxide is obtained by mechanical molding, and the spherical magnesium oxide product is obtained by heat treatment.

　　2. Tablet magnesium oxide

　　Flake magnesium oxide has a two-dimensional structure and is relatively easy to achieve during preparation. Applying flake magnesium oxide can increase its contact area with other materials, making the performance easier to perform. For the preparation method of flake magnesium oxide, the basic reports are to first prepare a flaky magnesium hydroxide precursor by precipitation, and then calcinate to obtain a flake magnesium oxide.

　　3. Magnesium oxide whiskers

　　Whiskers are needle-like or fibrous crystals with a very small diameter and very few defects. The performance indicators of whiskers mainly include: whisker size, whisker strength, surface chemistry of whiskers, etc. As a new type of multifunctional inorganic material, magnesium oxide whisker has good heat resistance, insulation, alkali resistance, stability and reinforcement characteristics, can be used with resin, cement, etc., is a superior reinforcing material, and it can also be used as an adsorbent, thermal insulation material, sound absorbing material, corrosion-resistant material, flame retardant material and unsaturated polyurethane thickener and reinforcing agent, its use is many and extensive.