Flame retardant for plastics

plastic flame retardant Flame retardants Overview
Most plastics are flammable. With the plastic in the construction, furniture,

transportation, aviation, aerospace, electrical and other aspects of the widely used to

improve the flame retardancy of plastics has become a very urgent issue. Burning flame

retardant to inhibit a class of polymer additives, they are mostly

Of the Periodic Table Ⅴ, Ⅶ Ⅲ group elements and compounds; especially phosphorus,

bromine, chlorine, antimony and aluminum compounds. Sub-additive flame retardants and

reactive types. Flame retardant halogen-containing primarily phosp hate and phosphate, a

halogenated hydrocarbon, antimony oxide, aluminum hydroxide

And so on. Advantage is easy to use and adaptable. However, the addition of capacity of 10%

to 30%, often affect the performance of plastics. Reactive flame retardant containing the

elements actually monomer, it has little effect on the plastic properties. Common reactive

flame retardant, eg for poly-

Halogenated ester anhydrides, for epoxy resins of tetrabromobisphenol A, and phosphorus for

polyurethane polyol. Initially flame retardants used in the U.S., after the 1960s, the

amount of surge current usage after plasticizer. Consumption of flame retardants in PVC

plastic varieties most

, Polystyrene, polyurethane foam, unsaturated polyester, ABS resin and polypropylene.
Most plastic is flammable, its products, which brought a lot of application security risks.

Pr ecisely, flame retardants, flame retardants known as more appropriate, because "flame"

contains two meanings flame retardant and smoke suppression, compared with the broader

concept of flame retardants. However, long-

Period, people have become accustomed to the concept of use of flame retardants, so the

current literature is actually referred to flame retardant and smoke suppression effect

functional additives in general.
Classification of flame retardants
Flame retardants can be classified according to their use additive flame retardant and

reactive flame retardant. Flame retardant additives usually added to the manner in

conjunction with the base resin, and the resin between them just a simple physical mixture;

reactive flame retardant resistance generally contained within the molecule

Fuel elements and the reactive group-containing monomer, such a s a halogenated anhydrides,

halogenated bisphenol-and phosphorus-containing polyols and the like, because of its

reactivity, can be chemically bonded to the molecular chain of the resin, a plastic resin

part, most reactions flame retardant barrier structure or synthetic additive

Flame retardant monomers. Chemical composition according to the different flame retardants

can be divided into inorganic and organic flame retardants. Inorganic flame retardants

include aluminum hydroxide, magnesium hydroxide, antimony oxide, zinc borate, and red

phosphorus, etc., halogenated organic flame mostly organic bromide, an organic

Chlorides, phosphates, halogenated phosphate, nitrogen and phosphorus flame retardant

intumescent flame retardants. Smoke suppressant effect is to reduce the amount of flame-

retardant materials and toxic smoke emission of harmful gases, mostly for molybdenum

compounds, tin compounds and iron-based compounds. Despite

Antimony trioxide and zinc borate also smoke suppression, but is often used as a flame

retardant synergist and therefore classified as a flame retardant system.
Flame retardant properties of the vast majority of a hard plastic indicator, conventional

flame retardant is used in halogen-containing flame retardant. Combustion of halogenated

flame retardant materials produce a lot of smoke and toxic corrosive gases will cause

secondary damage. Common ingredients are flame retardant phosphorus compound formula

, Silicone-based flame retardants, nitrogen-based flame retardants and metal hydroxides,

etc. Volatile combustion does not produce corrosive gases, pollution-free flame retardants

are known. Flame retardant is added to phase in the material suitable halogen flame

retardant to achieve the purpose, while avoiding contain halogens with

To secondary hazards.  plastic processing aid