flame resistant and textile flame retardant technology in recent years, China's rapid economic development, the advent of a large number of new flame retardant fiber and multifunctional flame retardant textiles, but still large gap with foreign countries, especially the high-end market is basically dominated by foreign companies, and developed our own technology there are many difficulties to be overcome. According to the information, the public places in China use a very small proportion of flame retardant products, did not reach the proportion of the amount of 1% of the flame-retardant plastic and less proportion of the use of fire-retardant textiles.
The fire caused by the textile can not be ignored
Used in the daily life of most of the natural fibers, man-made fibers and synthetic fibers are flammable or combustible textile fiber processing burns easily. In recent years, due to increased fire measures, the number of fires has declined, but the total number is still about 150,000 to 200,000 (excluding forest, grassland, army, underground parts of mines fire) annual deaths due to fire about of about 1,500 people, about 10 billion direct property loss. According to data from abroad, half of the causes of fire and textiles. Of fires caused by the textile is also very serious, such as the December 8, 1994, fire broke out in Karamay City, Xinjiang Friendship Hotel, killing 323 students and teachers were killed and 130 people were injured. The cause of the fire is ignited veil stage lighting Mars dropped, and then the curtain ignited synthetic fabrics do, accompanied by a large number of toxic and combustible gas spread rapidly, causing heavy casualties. The large number of domestic and international statistics show, upholstery fabrics, bedding, sofa, electric blankets and so on, have the source of the fire, and thus the developed countries on the development of flame-retardant textiles have given high priority, and to develop strict regulations.
Status of textiles retardant technology
Flammability Characterization of textiles, can limit oxygen index (LOI), namely, to maintain the combusted materials continue to burn the oxygen-containing volume of the minimum required percentage. Limiting oxygen index (LOI) will be divided into four categories: non-combustible (LOI ≥ 35%) textiles, textile raw materials such as metal fibers, carbon fibers, asbestos, boron fiber, glass fiber, PBO fiber, PBI (polybenzimidazole) fiber , polyimide fibers; flame (LOI = 26 ~ 34%) of textiles, such as Kevlar, Teflon, polyvinyl chloride, modified acrylic modified polyester, modified polypropylene, modified polyvinyl alcohol, modified viscose PPS (polyphenylene sulfide), seaweed fiber; combustible (LOI ≥ 26% ≤ 34%) textiles such as polyester, nylon, polyvinyl alcohol, wool, silk, acetate fibers; flammable (LOI ≤ 20) textiles, such as polypropylene, acrylic, cotton, linen, viscose fiber, bamboo fiber, soybean protein fiber, milk protein fiber, etc.. Noncombustible fiber retardant effect is good, but most not suitable for wearing or home, most often used natural or chemical fibers are combustible or flammable, the only type of textile the modified or finishing in order to improve their fire-retardant fireproof retardant performance, that is, will have fire-retardant features added to textiles in order to achieve the flame-retardant effect through a variety of channels.
Fiber flame retardant way to prevent or reduce the fiber thermal decomposition, isolated or diluted oxygen, rapid cooling terminated burning. In order to achieve the above object, there will be retardant features a flame retardant polymer blend, copolymer, composite spinning, then technological transformation, etc. was added to the chemical fiber in the go or finishing method using the flame retardant coating The layer on the fiber surface, or to penetrate the interior of the fiber. In practical applications, often using a variety of flame retardant, a way synergistic effect of two or more of the flame-retardant effect.