Bromine-containing flame retardants have the advantages of good flame retardancy, small additions, excellent processability, small impact on the physical and mechanical properties of polymer materials, abundant raw materials, and cheaper prices. Therefore, bromine flame retardants have been It has become one of the fastest growing organic flame retardants in the world, with the largest variety, the largest output and the widest application range, and has received widespread attention. Although bromine-based flame retardants have many advantages, bromine-based flame retardants will reduce the UV resistance of the flame retardant substrate. At the same time, toxic substances will be generated during processing, under high temperature and burning conditions. In 1986, a Swiss researcher found that polybrominated diphenyl ether (PBDPE) and its flame-retardant materials can produce highly toxic and carcinogenic polybrominated dibenzo-oxin (PBDD) when thermally decomposed at 510 ~ 630 ° C. And polybrominated dibenzofuran (PBDF), the so-called "dioxin" problem. In addition, when the bromine flame retardant is burned, it may generate more smoke, corrosive and toxic gases, including HX, CO, 2CO, 2SO, 2NO, 3NH, HCN, etc.

Bromine-based environmentally friendly flame retardants, as a large class of organic flame retardants, are mainly obtained by reacting brominated agents (commonly bromine) with related organic substances, and their output accounts for about 40% of organic flame retardants. At present, the bromine flame retardants with large consumption abroad mainly include: tetrabromobisphenol A and its derivatives, decabromodiphenyl ether and its homologs, aliphatic polybromides, brominated aromatic hydrocarbons, bromophenols and Its derivatives and high-molecular flame retardants, among them, tetrabromobisphenol A is the bromine-containing flame retardant with the largest production and consumption. It can be used as a reactive flame retardant in epoxy resins, polycarbonates, etc. It can also be used as an additive flame retardant for ABS, phenolic resin, etc. [1]; Decabromodiphenyl ether is another additive-type bromine-containing flame retardant with large output.