Flame retardant fiber textile development
China's textile flame retardant technology began in the 50s of last century to study the temporary flame retardant cotton fabric finishing, but the development is slow. Durable cotton flame-retardant textiles appeared only in the 1960s. After the 1970s developed a flame retardant began the synthetic fiber and blended fabric flame retardant technology research stage. In the 1980s, China's fire-retardant fabrics entered a new period of development. Some scientific research institutes, colleges and factories in Shanghai, Jilin, Shandong, Guangdong, Tianjin, Sichuan, Beijing, Jiangsu and other provinces and municipalities successively conducted fire retardant fibers Small pilot study, polyester and polypropylene have formed a mass production capacity, but overall, flame retardant fiber products are still in the research and pilot stage. This article describes the synthetic fiber flame retardant modification technology.
1, flame retardant polypropylene fiber modified
Flame retardant polypropylene fiber modified mainly by adding modified and flame retardant finishing preparation. At present, polypropylene mainly through the use of halogen flame retardants and antimony trioxide and other synergists to get the fire retardant effect, usually first in the polypropylene chips add high concentrations of flame retardants and other additives, after blending Flame-retardant masterbatch was made and then melt-spun with conventional polypropylene chips to prepare flame-retardant polypropylene fibers. Phosphoric-bromine synergistic flame retardant system for polypropylene fiber flame retardant has a good flame retardant effect, environmental pollution is small, and phosphorus-nitrogen synergistic flame retardant system for polypropylene fiber has a better flame retardant effect, but Polypropylene fiber in the application of relatively high conditions.
2, flame retardant polyamide fiber modified
Available as polyamide 6 and polyamide 66 Flame retardant modified flame retardant are mainly red phosphorus and dicarboxylic acid ethyl methyl phosphate and so on. Red phosphorus often with inert compounds, such as manganese hydroxide, aluminum hydroxide, such as the role of polyamide 6 and polyamide 66 flame retardant modified. Domestic flame retardant polyamide fiber for the production of better flame retardant copolymer is produced by Shanxi Chemical Fiber Institute NF-8702 polyamide fiber flame retardant. Intumescent flame retardant system has the potential market application value in flame retardant modification of polyamide fiber. Flame retardant used for polyamide blend modified more, such as low molecular weight phosphorus compounds, chlorinated polyethylene, brominated pentaerythritol and antimony trioxide. The use of boron, antimony and bromine composition of the ternary flame retardant polyamide flame retardant system, the flame retardant effect is better. In addition, red phosphorus or microencapsulated red phosphorus and polyamide blended spinning can also be obtained with self-extinguishing properties of flame-retardant polyamide fiber.
3. Polyacrylonitrile fiber flame retardant modification
Copolymerization flame retardant modification is mainly introduced into the polyacrylonitrile fiber containing halogen or phosphorus and other comonomers, such as vinyl chloride, vinylidene chloride, allyl phosphate alkyl, vinyl bis (2-chloro-B ) Phosphoric acid and other comonomers. At present, most of the flame-retardant polyacrylonitrile fibers that have been industrially produced in the world are manufactured by the copolymerization method. As the flame retardant polyacrylonitrile fiber blending flame retardant content can not be too high, so to choose a highly efficient flame retardant, and flame retardants in the spinning solution of liquid and uniform dispersion stability is better, and poly Acrylonitrile compatibility, the retention rate in the spinning process, washing resistance and toxicity, so the choice of flame retardant more difficult, the current industrialized blended flame retardant polypropylene bladder fiber varieties are few.
4. Flame retardant modified polyester fiber
Can be used to add more flame retardant polyester, flame retardant is also added the initial flame retardant modified polyester fiber. Flame retardants are mainly halogen flame retardants and phosphorus flame retardants. Among them, the flame retardants of brominated flame retardants are the best among the halogen flame retardants, and the synergistic effect with antimony compounds (such as antimony trioxide) can be formed to improve the flame retardant effect thereof. Phosphorus flame retardants in a variety of organic phosphate, phosphate, phosphorus compounds and phosphorus oxide and other flame retardants can be used for flame retardant polyester fiber modified. Among them, the aromatic phosphoric acid ester has good thermal decomposition stability and little influence on the thermal degradation of the polyester added to the polyester melt so as not to affect the spinning process and the fiber properties. At present, the addition of flame retardants in a number of small polyester fiber manufacturers have been widely used. Reactive flame retardant for polyester fiber refers to a molecule containing flame retardant elements (phosphorus, chlorine, bromine, nitrogen) and active groups (carboxyl, hydroxyl and anhydride, etc.) of small molecular flame retardants. Reactive flame retardant will gradually replace the additive flame retardant. Usually add a lower content (3% -8%) of the flame retardant can make the fiber has a good flame retardant effect. Reactive flame retardants that can be used in polyester fibers include halogen and phosphorus flame retardants. At present, the most commonly used international phosphorus-based copolymer flame retardant. Phosphorus flame retardants have a good flame retardant effect on polyester fibers, and no toxic gases are generated in the combustion process, and are environmentally friendly and flame retardant systems. Our country Shandong Qingdao University developed phosphorus flame retardant carboxylic acid alkyl phosphoric acid (SP-FR Ⅱ), is China's first successful development and commercial production of polyester fiber copolymerization phosphorus flame retardant, has reached the world The technical standards of similar products. Japan uses polyester and hypophosphorous acid derivatives and chemical elements in the table II, III, IV oxide of at least one metal element to produce flame-retardant polyester fiber.
At present, there are dozens of flame-retardant fibers in the market both at home and abroad. The traditional flame-retardant fibers are mainly flame retardant polyester, flame retardant acrylic and flame retardant vinylon. With the progress of science and technology, various countries have recently developed and produced a variety of flame retardant fibers, such as poly-m-phenylene isophthalamide fibers, polyamide imide fibers, polyimide 2080 fibers, heterocyclic polymers Polybenzimidazole fibers (PIM2080), phenolic fibers, Basofil fibers. The flame retardant effect of these fibers are better, in the industrial and special areas have great use.
How to buy good quality and cheap flame retardant fabrics, fluorescent fabrics, three functional fabrics Teflon and other functional fabrics?
Choose Xinxiang Yu Long Textile Co., Ltd. , we will provide you with the best fabrics, we will also provide you with the supply of flame retardant overalls.
1, flame retardant polypropylene fiber modified
Flame retardant polypropylene fiber modified mainly by adding modified and flame retardant finishing preparation. At present, polypropylene mainly through the use of halogen flame retardants and antimony trioxide and other synergists to get the fire retardant effect, usually first in the polypropylene chips add high concentrations of flame retardants and other additives, after blending Flame-retardant masterbatch was made and then melt-spun with conventional polypropylene chips to prepare flame-retardant polypropylene fibers. Phosphoric-bromine synergistic flame retardant system for polypropylene fiber flame retardant has a good flame retardant effect, environmental pollution is small, and phosphorus-nitrogen synergistic flame retardant system for polypropylene fiber has a better flame retardant effect, but Polypropylene fiber in the application of relatively high conditions.
2, flame retardant polyamide fiber modified
Available as polyamide 6 and polyamide 66 Flame retardant modified flame retardant are mainly red phosphorus and dicarboxylic acid ethyl methyl phosphate and so on. Red phosphorus often with inert compounds, such as manganese hydroxide, aluminum hydroxide, such as the role of polyamide 6 and polyamide 66 flame retardant modified. Domestic flame retardant polyamide fiber for the production of better flame retardant copolymer is produced by Shanxi Chemical Fiber Institute NF-8702 polyamide fiber flame retardant. Intumescent flame retardant system has the potential market application value in flame retardant modification of polyamide fiber. Flame retardant used for polyamide blend modified more, such as low molecular weight phosphorus compounds, chlorinated polyethylene, brominated pentaerythritol and antimony trioxide. The use of boron, antimony and bromine composition of the ternary flame retardant polyamide flame retardant system, the flame retardant effect is better. In addition, red phosphorus or microencapsulated red phosphorus and polyamide blended spinning can also be obtained with self-extinguishing properties of flame-retardant polyamide fiber.
3. Polyacrylonitrile fiber flame retardant modification
Copolymerization flame retardant modification is mainly introduced into the polyacrylonitrile fiber containing halogen or phosphorus and other comonomers, such as vinyl chloride, vinylidene chloride, allyl phosphate alkyl, vinyl bis (2-chloro-B ) Phosphoric acid and other comonomers. At present, most of the flame-retardant polyacrylonitrile fibers that have been industrially produced in the world are manufactured by the copolymerization method. As the flame retardant polyacrylonitrile fiber blending flame retardant content can not be too high, so to choose a highly efficient flame retardant, and flame retardants in the spinning solution of liquid and uniform dispersion stability is better, and poly Acrylonitrile compatibility, the retention rate in the spinning process, washing resistance and toxicity, so the choice of flame retardant more difficult, the current industrialized blended flame retardant polypropylene bladder fiber varieties are few.
4. Flame retardant modified polyester fiber
Can be used to add more flame retardant polyester, flame retardant is also added the initial flame retardant modified polyester fiber. Flame retardants are mainly halogen flame retardants and phosphorus flame retardants. Among them, the flame retardants of brominated flame retardants are the best among the halogen flame retardants, and the synergistic effect with antimony compounds (such as antimony trioxide) can be formed to improve the flame retardant effect thereof. Phosphorus flame retardants in a variety of organic phosphate, phosphate, phosphorus compounds and phosphorus oxide and other flame retardants can be used for flame retardant polyester fiber modified. Among them, the aromatic phosphoric acid ester has good thermal decomposition stability and little influence on the thermal degradation of the polyester added to the polyester melt so as not to affect the spinning process and the fiber properties. At present, the addition of flame retardants in a number of small polyester fiber manufacturers have been widely used. Reactive flame retardant for polyester fiber refers to a molecule containing flame retardant elements (phosphorus, chlorine, bromine, nitrogen) and active groups (carboxyl, hydroxyl and anhydride, etc.) of small molecular flame retardants. Reactive flame retardant will gradually replace the additive flame retardant. Usually add a lower content (3% -8%) of the flame retardant can make the fiber has a good flame retardant effect. Reactive flame retardants that can be used in polyester fibers include halogen and phosphorus flame retardants. At present, the most commonly used international phosphorus-based copolymer flame retardant. Phosphorus flame retardants have a good flame retardant effect on polyester fibers, and no toxic gases are generated in the combustion process, and are environmentally friendly and flame retardant systems. Our country Shandong Qingdao University developed phosphorus flame retardant carboxylic acid alkyl phosphoric acid (SP-FR Ⅱ), is China's first successful development and commercial production of polyester fiber copolymerization phosphorus flame retardant, has reached the world The technical standards of similar products. Japan uses polyester and hypophosphorous acid derivatives and chemical elements in the table II, III, IV oxide of at least one metal element to produce flame-retardant polyester fiber.
At present, there are dozens of flame-retardant fibers in the market both at home and abroad. The traditional flame-retardant fibers are mainly flame retardant polyester, flame retardant acrylic and flame retardant vinylon. With the progress of science and technology, various countries have recently developed and produced a variety of flame retardant fibers, such as poly-m-phenylene isophthalamide fibers, polyamide imide fibers, polyimide 2080 fibers, heterocyclic polymers Polybenzimidazole fibers (PIM2080), phenolic fibers, Basofil fibers. The flame retardant effect of these fibers are better, in the industrial and special areas have great use.
How to buy good quality and cheap flame retardant fabrics, fluorescent fabrics, three functional fabrics Teflon and other functional fabrics?
Choose Xinxiang Yu Long Textile Co., Ltd. , we will provide you with the best fabrics, we will also provide you with the supply of flame retardant overalls.
评论
发表评论