What do flame retardants have

Generally speaking, organic flame retardants have good affinity. In plastics, brominated flame retardants occupy an absolute advantage in organic flame retardants. Although there are many criticisms on environmental protection, it is difficult to be replaced by other flame retardants.


Among the non halogen flame retardants, red phosphorus is a better flame retardant, which has the advantages of small addition, high flame retardant efficiency, low smoke, low toxicity and wide application. When red phosphorus is combined with inorganic flame retardants such as aluminum hydroxide and expandable graphite, it can be made into composite phosphorus / magnesium, phosphorus / aluminum, phosphorus / graphite and other non halogen flame retardants, and the flame retardant dosage can be greatly reduced, so as to improve the processing of plastic products Performance and physical and mechanical properties. But the common red phosphorus is easy to be oxidized and hygroscopic in the air, easy to cause dust explosion, difficult to transport, poor solubility with polymer materials and other defects, so its application scope is limited. In order to make up for this deficiency, microcapsule coating process can be used to make it microencapsulated red phosphorus. Microencapsulated Red Phosphorus not only overcomes the inherent disadvantages of red phosphorus, but also has high efficiency, low smoke, no toxic gas in processing, and its dispersibility, physical and mechanical properties, thermal stability and flame retardancy are improved.