Halogenated flame retardant refers to a flame retardant mixture composed of a halogen-containing polymer or a halogen-containing flame retardant. It mainly includes antimony trioxide and decabromodiphenyl ether, which is also commonly referred to as a bromine antimony flame retardant. Bromine antimony flame retardant has excellent flame retardancy and has been widely used as a material for blocking olefins. However, when a fire occurs, such materials made of halogen-containing flame retardants will generate a large amount of smoke and toxic corrosive hydrogen halide when heated, causing secondary hazards. In February 2003, the European Union issued two directives, WEEE and RoHs. WEEE is a directive on recycling of waste electrical and electronic equipment, and rohs is a directive on restricting and banning the use of certain toxic and harmful substances and elements in electrical and electronic equipment. In August 2004, these two directives were converted into laws (regulations) of the 15 member states of the European Union. Western Europe has begun to implement new flame retardant classification methods and testing standards in industries such as wire and cable, building materials, and coatings. China has also started to approve national standards for the combustion performance grades of building materials and products. China's flame retardant performance levels and national standards have many of the same characteristics as the new standards in Western Europe, that is, the flame retardant performance is judged by emphasizing the rate of fire development, heat release, smoke generation, and the corrosion and toxicity of combustion products standard. In order to pass such new standards, the traditional halogen-based flame retardant materials such as antimony trioxide will be powerless.

The new flame retardant system has a small amount of smoke during combustion and does not produce corrosive and toxic gases. Halogen-free flame retardants are mainly phosphorus-based compounds and metal hydroxides.

Halogen-free flame retardant JLH-W666 is a high-performance phosphorus-nitrogen organic flame retardant. It is a triazine trione compound and a triazine triamine compound. After special surface treatment, it is easy to be used in plastic materials. Disperse without precipitation, and has good flame retardant effect. W666 has a decomposition temperature of about 450 ° C, a maximum particle size (D50%) of 20 / um, and a white powder appearance. It is a high-temperature, high-performance, halogen-free flame retardant that does not affect the color of the product. It is recommended for polyamide (nylon) ) It is widely used in epoxy resin, polyurethane, polystyrene, polyester (PET, PBT), polyolefin and halogen-free wire and cable. It is recommended to add 15% -30% of halogen-free flame retardant W666, and it can reach V0 at 94UL. -V2 standard.