Why magnesium hydroxide is used as flame retardant

Magnesium hydroxide decomposes when heated (340-490 degrees) to absorb the heat on the surface of combustibles and play a flame retardant role; At the same time, a large amount of water is released to dilute the oxygen on the surface of the combustor, and the active magnesium oxide formed by decomposition adheres to the surface of the combustor, which further prevents the combustion. Magnesium hydroxide not only does not produce any harmful substances in the whole flame-retardant process, but also its decomposed products can absorb a large number of harmful gases and smoke generated by the combustion of rubber, plastics and other polymers. Active magnesium oxide constantly absorbs the melting residues of incomplete combustion, eliminating smoke and preventing droplet while stopping combustion quickly. It is a new environmental friendly inorganic flame retardant.