2013年8月19日星期一

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 acrylic processing  flame retardancy of plastics has

become a very urgent issue. Inhibiting polymer flame retardant is a class

of flammability additives, they are mostly of the Periodic Table Ⅴ, Ⅶ Ⅲ

elements and compounds; especially phosphorus, bromine, chlorine, antimony

and aluminum compounds. Sub-additive flame retardants and reactive types.

Flame retardant halogen-containing primarily phosphate and phosphate, a

halogenated hydrocarbon, antimony oxide, and aluminum hydroxide. 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 retardants, halogenated

anhydrides such as for polyesters, for epoxy resins of tetrabromobisphenol

A, and phosphorus for polyurethane polyol. Initially flame retardants used

in the U.S., after the 1960s, the tio2 anatase  amount of surge current usage after

plasticizer. Consuming most varieties of plastic flame retardant polyvinyl

chloride, polystyrene, polyurethane foam, unsaturated polyester, ABS resin

and polypropylene.
Most plastic is flammable, its products, which brought a lot of application

security risks. Precisely, flame retardants, flame retardants known as more

appropriate, because "flame" contains two meanings flame retardant and

smoke suppression, compared with the yellow iron oxide  broader concept of flame retardants.

However, long time, people have become accustomed to the concept of use of

flame retardants, so the current literature is actually referred to in the

flame retardant and smoke suppression effect of functional additives in

general.

没有评论:

发表评论