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Flame retardant fiber

Flame retardant fiber includes two categories, 
The other is a high temperature resistant and refractory fiber, the melting point of this kind of fiber itself is very high, not easy combustion, this kind of fiber can also be used for special high temperature industrial nonwoven filter material, blanket and gaskets.  
Conventional synthetic fiber flame retardant 
One is through the regular chemical fiber (nylon, polyester, acrylic, polypropylene, etc.) add flame retardant dope, flame retardant can be based on copolymerization or blending with polymer fibers, resulting in permanent flame retardant fiber; 
By copolymerization flame retardant: after spinning and flame retardant monomer polymerization monomer copolymerization. Such as hurst TREVIRA type 271 of modified polyester fiber, Japan card card resistant nylon (CORDELON) modified whalen - d chlorofibre. The mainest is nitrile chlorofibre series products, it is of acrylonitrile and vinyl chloride vinylidene chloride or copolymer made by the wet or dry spinning fiber, in addition to the monomers such as acrylonitrile and vinyl chloride vinylidene chloride or, generally choose alkyl or alkenyl sulfonate as the third monomer, to improve the dyeing properties of the fiber.  
Blending method of flame retardant: through different polymer blending, mixed with a certain amount of flame retardant, the fiber has the flame retardant performance. Such as polyester or polypropylene fiber added with bromine, phosphide, can make flame retardant polyester fiber and polypropylene. The Finnish d silver (VISIL) flame retardant viscose fiber, containing silicate compound, the residue after burning, can still keep fibrous form. Our country has successfully trial-produced of flame retardant fiber flame retardant polyester, polypropylene, acrylic, whalen and viscose fiber, flame retardant polyester fiber and polypropylene fiber can be industrialized production. 
See table L part nitrile chlorofibre fiber products. Manufacturer name flame retardant monomer polymerization process spinning solvent KaiMi SiGuan N Japan agms VDC precipitation wet spinning low nitrate kanebo VDC/nylon/Japan/wet spinning/DMF solution well picked/Japan toray/VDC/card/wet spinning/DMSO solution resistance card Zhong Yuan/VC/nylon/Japan/acetone precipitation/wet spinning U.C.C. denar/America/VC/precipitation/wet spinning/acetone orlan FLR/American dupont VDC/precipitation/dry spinning/DMA Aztec nylon/British COURTAULDS VDC/precipitation/wet spinning/acetone waley g SNIAVISCOSE nylon FR/Italy/VDC/solution/wet spinning/DMF nylon Della C/Germany BAYER precipitation/dry spinning/DMF/VDC/nitrile chlorofibre/China fushun flame retardant JingGuanChang/VDC/solution/wet spinning DMF * DMA two methyl ethyl amide DMP two methyl formamide DMS0 dimethyl sulfoxide 
Between a polyamide with DUPONT NOMEX, teijin CONEX, polybenzimidazole P84, poly melamine BASOFII basf, aromatic heterocyclic group KERMEI, EKONOI, and PBO and PBZT fibers. 
High temperature resistant fiber functional nonwovens using high temperature resistant fibers are generally between the glass fiber, carbon fiber, an aromatic polyamide, polybenzimidazole, phenolic, polyphenylene sulfide, melamine and aromatic heterocyclic polymer fiber such as high temperature resistant fibers. GGHPWGAE9 
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