Nylon flame retardants are also called flame retardants, fire retardants or fire retardants: functional additives that impart flame resistance to flammable polymers; they are divided into additive flame retardants and reactive flame retardants according to the application. Depending on the composition, the additive flame retardants mainly include inorganic flame retardants, halogen flame retardants (organic chlorides and organic bromides), phosphorus flame retardants (red phosphorus, phosphates, and halogenated phosphates, etc.) and nitrogen. Department of flame retardants. Flame retardants are currently mainly organic and inorganic, halogen and non-halogen. Organic is some flame retardants represented by bromine, phosphorus and nitrogen, nitrogen and red phosphorus and compounds. Inorganic is mainly flame retardant systems such as antimony trioxide, magnesium hydroxide, aluminum hydroxide, and silicon. Generally speaking It is said that organic flame retardants have good affinity. Among plastics, brominated flame retardants occupy an absolute advantage in organic flame retardant systems. Although environmental issues are "disputable", it has been difficult to replace other flame retardant systems. Among non-halogen flame retardants, red phosphorus is a better flame retardant, which has the advantages of less addition, high flame retardant efficiency, low smoke, low toxicity, and wide range of uses; red phosphorus and aluminum hydroxide, expanded graphite Non-halogen flame retardants such as phosphorus / magnesium; phosphorus / aluminum; phosphorus / graphite, etc. . However, ordinary red phosphorus is easy to oxidize and absorb moisture in the air, easily cause dust explosion, transportation difficulties, poor compatibility with polymer materials, and other defects, and its application range is limited. In order to make up for this deficiency and expand the scope of application of red phosphorus, we have adopted advanced foreign microcapsule coating technology to make it into microencapsulated red phosphorus. In addition to overcoming the inherent disadvantages of red phosphorus, microencapsulated red phosphorus has high efficiency, low smoke, and does not generate toxic gases during processing. Its dispersibility, physical, mechanical properties, thermal stability, and flame retardancy have been improved. improve.