The main flame retardants used in flame retardant field are halogen series, organophosphorus series and inorganic antimony series, aluminium series, magnesium series, boron series and molybdenum series. Halogen-based (mainly bromine-based) flame retardants are one of the most productive organic flame retardants in the world. Synthetic materials using organic flame retardants emit toxic gases and smoke during combustion, which threaten the safety of human life and property. Moreover, the production process of organic flame retardant is difficult to control, waste is easy to pollute the environment, high production cost and high price. Magnesium hydroxide (brucite) is a halogen-free flame retardant, which produces water by thermal decomposition and absorbs heat, and produces no corrosive and harmful substances after decomposition. Magnesium hydroxide not only improves the decomposition temperature of the added materials, but also does not pollute the environment. Magnesium hydroxide can be widely used in flame retardant and smoke suppression of polypropylene, polyvinyl chloride and unsaturated resins. Magnesium hydroxide has high thermal decomposition temperature, which is conducive to accelerating extrusion speed, shortening molding time and improving flame retardant efficiency. It can be widely used in polyester, epoxy resin, coatings, fiber products, polypropylene, polyacrylonitrile, polyvinyl ester, wire, cable, wood, rubber, paint, polyvinyl chloride and other fields.
