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Analysis of the difference between halogen-free flame retardants and halogenated flame retardants


Release time:

Jul 12,2021

[Summary]Analysis of the difference between halogen-free flame retardants and halogenated flame retardants:

  halogen-free flame retardantwith halogenated flame retardant difference analysis:

Halogenated flame retardants refer to halogen-containing polymers or flame-retardant mixtures combined with halogen-containing flame retardants, mainly including antimony trioxide and decabromodiphenyl ether, also known as bromine antimony flame retardants, which have excellent flame retardancy. It has been widely used as a barrier material. However, when a fire occurs, such materials made of halogen-containing flame retardants are heated to generate a large amount of smoke and toxic corrosive hydrogen halide gas, causing secondary hazards.

China's flame retardant performance grades and national standards have many of the same characteristics as the new Western European standards, namely: emphasis on fire development speed, heat release rate, smoke, corrosion and toxicity of combustion products as a criterion for judging flame retardant performance. In order to pass such a new standard, the traditional halogen-based flame retardant materials such as antimony trioxide will be inadequate.

The new flame retardant system produces a small amount of smoke when burning, and does not produce corrosive and toxic gases. Halogen-free flame retardants are mainly phosphorus compounds and metal hydroxides.

Halogen-free flame retardant JLH-W666 is a high-performance phosphorus-nitrogen organic flame retardant. It is a triazine triketone compound and triazine triamine compound. After special surface treatment, it is easy to disperse in plastic materials, does not precipitate, and has good flame retardant effect. The decomposition temperature of W666 is about 450 ℃, the maximum particle size (D50%) is 20/um, and the appearance is white powder, it is a high-temperature resistant high-performance halogen-free flame retardant that does not affect the color of the product. It is recommended to be applied to polyamide (nylon) and widely used in epoxy resin. It is recommended to add 15%-30% halogen-free flame retardant W666 to polyurethane, polystyrene, polyester (PET, PBT), polyolefin and halogen-free wires and cables, and 94UL can reach V0-V2 Standard.


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