Generally speaking, organic flame retardants have a good affinity. Among plastics, bromine 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 Shanghai flame retardant, which has the advantages of less addition, high flame retardant efficiency, low smoke, low toxicity, and wide use; red phosphorus and aluminum hydroxide, swelling Inorganic flame retardants such as graphite are used in combination to make composite phosphorus / magnesium; phosphorus / aluminum; non-halogen flame retardants such as phosphorus / graphite. The flame retardant dosage can be greatly reduced, thereby improving the processing performance and physical machinery of plastic products performance. 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.