Flame retardant, a functional additive that imparts flame-retardant properties to flammable polymers, is mainly designed for the flame-retardant of polymer materials; there are many types of flame-retardant, which are divided into additive flame-retardant and reactive flame-retardant according to the method of use.

Additive flame retardant is added to the polymer by mechanical mixing method to make the polymer flame retardant. Additive flame retardant mainly includes organic flame retardant and inorganic flame retardant, halogen flame retardant (organic chloride and organic bromide) and non-halogen.Organic is a group of flame retardant represented by bromine, phosphorus and nitrogen, nitrogen, red phosphorus and compounds, while inorganic is mainly antimony trioxide, magnesium hydroxide, aluminum hydroxide, silicon and other flame retardant systems.

Reactive flame retardant participates in the polymerization reaction as a monomer, so that the polymer itself contains flame-retardant components. Its advantage is that it has little impact on the performance of polymer materials and long-lasting flame-retardant properties.

Flame retardant science and technology is a science developed to meet the needs of social safety in production and life, prevent fires, and protect people's lives and property.Flame retardant is the application of flame retardant technology in real life. It is a special chemical additive used to improve the combustion performance of combustible and flammable materials. It is widely used in the flame retardant processing of various decoration materials.The material processed by the flame retardant can effectively prevent, delay or terminate the spread of the flame when it is attacked by an external fire source, so as to achieve the effect of flame retardant.

Flame retardant is divided into two categories: physically mixed additive flame retardant and chemically bonded reactive flame retardant.The basic requirements for the physical properties of flame retardant are: ① Good compatibility with plastics and synthetic fibers; ② Does not change the inherent excellent properties of the original substance;③The dosage is small and the effect is large;不分It does not decompose at the processing temperature;小It is less toxic and does not produce toxic gases when burned;低廉 The cost is low.There are many substances that can be used as flame retardant, such as alkyl phosphate esters: tributyl phosphate, Tris (2-ethylhexyl) phosphate, tris (2-chloroethyl) phosphate, tris (2,3-dichloropropyl) phosphate, Tris (2,3-dibromopropyl) phosphate, Pyrol99, etc.; Aryl phosphate esters: toluene phosphate-diphenylate, trimethylphenylate phosphate, triphenylate phosphate, phosphoric acid (2-ethylhexyl)-diphenylate, etc.Dicyclopentadienes: chlordanoic anhydride, etc.Aliphatic halogenated hydrocarbons, especially bromides: dibromomethane, trichlorobromomethane, dichlorobromomethane and octabromodiphenyloxide, pentabromoethylbenzene, tetrabromobisphenol A and other aromatic bromides and other halogenates.In addition, there are Tris (dibromopropyl) phosphate, halocyclohexane and its derivatives, decabromobiphenyl ethers and their derivatives.Inorganic flame retardant include tellurium compounds, aluminum hydroxyl, magnesium hydroxide, borate, etc.Organic nitrogen-based flame-retardant agents such as triazine and its derivatives, melamine, etc. have unsatisfactory effects when used alone, but when used in combination with phosphorus-based flame-retardant agents, they can have a synergistic effect.There are two types of composite flame retardant like this kind. One is a compound flame retardant that is mechanically mixed with two flame retardant; the other is a compound that contains nitrogen and phosphorus at the same time.The former is a flame retardant composed of melamine and polyphosphate, and a flame retardant composed of urea, dicyandiamide and phosphate; the latter is a melamine salt of pentaerythritol phosphate, cyclophosphamide polymer, etc.

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Features:
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