plastic flame retardant technology introduction

Plastic applications continue to expand at the black iron oxide  same time increasing its heat and combustible and easily ignite, brought to mankind unexpected danger and loss. Therefore, from the late 1960s, people began to pay attention to and emphasizes natural and synthetic materials, flame resistance, flame retardant additives began as an important class of first chemical fiber, plastics industry rise. Retardants abroad since the 1970s began to develop rapidly, consumption and varieties rose sharply, there are around 6 to 8 percent growth rate. Many of the additives in the plastics industry in flame retardant consumption has moved up to No. 2, second only to the great variety of plasticizers. . Flame retardant additive and reaction is usually divided into types: additive flame retardant used for thermoplastics, is currently the world's largest production of flame retardants, flame retardants accounted for 90% of total. More reactive flame retardant for thermosetting plastics; flame retardants according to the chemical structure can be divided into inorganic and organic flame retardants, inorganic flame retardants are antimony compounds, inorganic boron compounds, inorganic phosphorus flame retardant, inorganic hydroxides, organic flame retardants include organic halogenated flame retardants and organic phosphorus flame retardant. Antimony flame retardants. Antimony prices high, heavy smoke, while halogen flame retardant antimony trioxide is essential gn3t}? ^. Bm
Synergists, so trioxide particle fineness requirement is getting smaller, not only can greatly reduce the amount of increase flame jf? V [{! K |
Sex, but also greatly reduce the amount of smoke. Are generally in the fineness of several microns to 0.01μm, as developed by Seiko Co., Ltd. of Japan Patox average particle size of 0 .01 ~ 0 .02 μm. Guizhou Rong Jiang Fenghua developed chemical antimony antimony oxide ultrafine pure activity, with an average particle size of 0.02μm, content of 99.999%. PolycomHuntsman developed "N% vVu` PNyacoIADP480 a particle size less than 0.1μm antimony pentoxide, adding 1% in the PP up a good flame retardant, and not?)? L? AVQIp
Be of PP impact strength, transparency, etc. impact. Another use of antimony trioxide and aluminum hydroxide, zinc borate, fluoride {C?? O @?? WS
Borate complex, not only can reduce the amount of antimony trioxide and the amount of smoke is also greatly reduced. In short ultrafine seek) E??. OaP
Antimony substitutes and reduce the amount of smoke is antimony flame retardantsdevelopment focus. ? G?} 7?? 50
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- Brominated flame retardants. Brominated flame retardants despite heavy smoke, because of environmental issues by the magnesium hydroxide  EU restrictions; but because flame-g?? NpH? YB
Performance is good, with less impact on product performance is small, quite a long time in the future is still the main flame. With? ~ PpN? DLFL
International technical progress the development of brominated flame retardants on the new feature is to continue to improve and increase the molecular weight of bromine content. Such as the U.S. Ferro's PB-68 is mainly composed of brominated polystyrene, the molecular weight 15000 containing 68% bromine. Belfast bromine chemical companies and Ameribrom companies were developed poly Pentabromophenol acrylate bromine content of 70.5% \ MW 30000 ~}-n? DdMa / -
80000. These flame retardants particularly suitable for all kinds of engineering plastics, migration, compatibility, thermal stability, flame resistance, etc. are much better than many small molecules flame retardants, may become future replacements. - Phosphorus flame retardant. Phosphorus flame retardants are mostly liquid, mainly used in PU, PVC and other plastics. United retardant properties of polymers is much better than the linear polymer, so thermoplastics plus $? _ZQ]?? F
Adding a small amount of a crosslinking agent work becomes part of the polymer network structure, not only can improve the dispersion of the flame retardant, there are benefits BqOve? S2xU
Combustion in the condensed phase polymer produced coking, effectively improve the flame retardancy and PVC stabilizer for cable  mechanical products can increase sexual? O-YGEjeG?
Energy, weathering, heat resistance, etc., such as soft PVC quaternary ammonium salt in a small amount, so that the heat of the fire-retardant material to form a crosslinked> a ~: z?-Jiz
Material. Radiation may also be used to join metal oxides and crosslinking methods, but also allows the polymer to pay. W #?? VTZE; d
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 - Directly generate retardant monomer technology. Directly before the polymerization of the monomer having a flame resistance, so that the resulting 1? Wo? FI?;
Polymer become retardant materials, but also flame retardant in a way.