Plastic flame retardant technology progress

Plastic application domain expands unceasingly, but the flammable and calorific value is high, easy to ignite, brought unexpected dangers to human beings and loss. Therefore from the late 60 s, people began to pay attention and emphasis on natural and synthetic materials of flame retardant, flame retardant began as a kind of important auxiliary first rise in chemical fiber, injection molding processing industry. Since the 70 s, flame retardant abroad began to rapid development, a sharp rise in consumption and variety, about 6% a year The rate of 8% growth.

bromine flame retardants although large amount of smoke, but as a result of good flame retardant performance, less dosage, small impact on product performance, so in the future quite a long time to throw to the main flame retardants. As technology advances, the international on new characteristics in the development of bromine flame retardants is continue to improve the bromine content and molecular weight. Some flame retardants suitable for all kinds of special engineering plastics, the migration, compatibility, thermal stability, flame retardancy, etc are much better than many small molecules flame retardant, has the potential to be the updated products in the future.

antimony product price high, large amount of smoke, and antimony trioxide is an essential part of halogen flame retardant synergistic agent, therefore to antimony trioxide particle fineness requirement is more and more thin, not only can greatly reduce the consumption, improve the flame retardancy, and smoke volume is greatly reduced. In addition, using antimony trioxide and aluminum hydroxide, zinc borate and so on, not only can reduce the amount of antimony trioxide, and smoke volume is greatly reduced. All in all, antimony, seeking substitutes ultrafine and reduce the amount of smoke is a hot spot in the development of antimony flame retardant.

phosphorus-containing flame retardants is liquid, mostly small molecule phosphorus-containing flame retardants are the main disadvantages of volatile and the high heat resistance. With flame retardant and plasticizing, flame retardant and crosslinking of many functional phosphorus-containing flame retardants is another major aspect of development. Flame retardant plasticizer is mainly used for PVC products. Flame retardant crosslinking agent are some of the phosphorus polyols with reaction activity class, not only can be used as a PU reactive flame retardant, but also with and bromine flame retardants used in epoxy resin, can greatly reduce the dosage of the bromide flame retardants. Phosphorus-containing flame retardants in the future to low poison development, not only solve the toxicity of the product itself, but also the combustion decomposition product of the toxicity and environmental pollution of the waste, and even consider production, sales, order the toxic problem in the process of storage and transportation.

in the plastic industry many additives, flame retardants, consumption has become the second be behind the large varieties of plasticizer. Flame retardants are usually divided into add type and reaction type. Additive flame retardants used in thermoplastics, is currently the world production of a lot of flame retardants, accounting for 90% of the flame retardant production. More reactive flame retardant used in thermosetting plastic. Fire retardant agents according to the chemical structure can be divided into inorganic flame retardants and organic flame retardant.

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