Flame retardants, also known as flame retardants, fire retardants, fire retardants, exert their flame retardant effects through several mechanisms, such as endothermic action, covering action, inhibition of chain reaction, suffocation of non-combustible gases, etc. Most flame retardants pass Several mechanisms work together to achieve flame retardant purposes. Flame retardants are mainly classified into organic and inorganic, halogen and non-halogen. Organic compounds are some flame retardants represented by bromine, phosphorus and nitrogen, nitrogen and red phosphorus and compounds. The inorganic substances are mainly flame retardant systems such as antimony trioxide, magnesium hydroxide, aluminum hydroxide and silicon. According to the composition, the additive flame retardant mainly includes inorganic flame retardants, halogen flame retardants (organic chlorides and organic bromides), phosphorus flame retardants (red phosphorus, phosphates and halogenated phosphates, etc.) and nitrogen. It is a flame retardant.