Innovative Application Of Magnesium Hydroxide Flame Retardant In Industry

by Hu Yanchao Magnesium oxide manufacturers in China

　Magnesium hydroxide flame retardant has the properties of colorless, non-toxic, tasteless, non-corrosive and so on.

　　Magnesium hydroxide with good lamellar or fibrous crystal shape can be well matched with the raw material, without affecting the strength of the raw material and other physical properties, effectively improve the flexural strength and elongation of polymer materials.

　　Therefore, magnesium hydroxide flame retardant with special morphology has better properties and wider application.

　　As an important chemical product, magnesium hydroxide has been widely used in the fields of ceramics, flame retardant, catalysis, medicine and environmental protection.

　　The morphology, size and dispersion of magnesium hydroxide nanomaterials will affect their application performance, so it is necessary to regulate them.

　　Taking magnesium hydroxide as the research object, the morphology, size and dispersion of magnesium hydroxide products were successfully controlled by adjusting the synthesis conditions.

　　The aluminum-magnesium composite coating was prepared by plasma spraying with magnesium hydroxide powder as one of the starting materials.

　　(1) a process was designed for the preparation of magnesium hydroxide nanometer powder by ammonia diffusion at room temperature.

　　Under the guidance of S042- ion and PEG, magnesium hydroxide nanoparticles can crystallize into spherical crystals with good morphology.

　　The effects of reaction concentration, reaction time, solvent and additives on the final morphology of globular products were studied by different comparative experiments.

　　By changing the type of additives, the average diameter of spherical crystals can be adjusted to meet the requirements of various specific applications.

　　By changing the type of magnesium salt reactants and additives, the product of magnesium hydroxide, which is different from the spherical morphology, can be obtained by using the ammonia diffusion system.

　　(2) taking the synthesized magnesium hydroxide product as the raw material, the aluminum magnesium composite ceramic coating was prepared on the matrix surface of Q235 steel by plasma spraying equipment using the melting point difference between magnesium hydroxide and magnesium oxide.

　　The phase composition and microstructure of the composite coating were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM).

　　Aluminum-magnesium composite ceramic coating is mainly composed of a-a1203, m-a1203 and MgO.

　　Magnesium hydroxide has a better economic and social benefits and a wider application prospect in the field of composite coating.