Magnesium hydroxideIs a new type of filled flame retardant, in the process of thermal decomposition of the release of combined water, absorb a large amount of latent heat, in order to reduce the surface temperature of the filling of synthetic materials in the flame, with the inhibition of polymer decomposition and the effect of the production of combustible gas cooling.

For a long time, magnesium hydroxide flame retardant in China are high-end products, basically belong to the blank. my country imports about 30000 tons per year, most of which are used by foreign-funded enterprises in China. They are mainly used for high-end materials, such as wires and cables for nuclear power plants, insulation materials for high-speed railways, and communication equipment.

The magnesium oxide generated by the thermal decomposition of magnesium hydroxide is an ideal refractory material. In addition to helping to optimize the fire resistance of the synthetic material, the water vapor released by the decomposition also has the effect of smoke suppression. Therefore, in the rubber industry, magnesium hydroxide is recognized as a high-quality flame retardant with three functions of smoke suppression, filling and flame retardant. At present, in the field of communication cables, foreign countries such as Japan, the European Union, and the United States have used more than 64% of inorganic flame retardants, while China only accounts for 8%.

Magnesium hydroxide as an inorganic flame retardant, in addition to the flame retardant effect, but also has the function of smoke suppression. In the fire, more than 80% of the victims were not burned to death, but suffocated by smoke. The addition of magnesium hydroxide flame retardant can greatly reduce the smoke density during combustion and reduce the risk factor of people being choked to death. Secondly, the polymer material will have the effect of heat insulation after the addition of magnesium hydroxide. Once burned, magnesium hydroxide forms a thin film of magnesium oxide. This layer of magnesium oxide film is resistant to high temperatures, which can prevent further combustion, isolate air and other flammable materials, and improve people's survival probability in case of fire.

Foreign high-end villa wall materials will add magnesium hydroxide, heat insulation effect is very ideal. And most of the airport, large supermarket roofs will also use magnesium hydroxide flame retardant materials, heat insulation in summer and winter to keep warm. Although the amount of magnesium hydroxide flame retardant abroad is very large, the use of magnesium hydroxide flame retardant in China is not much.