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Flame retardant fiber synthesis and function of modified
2013-10-31 by bridge
Polysulfone amide as a new type of fire-retardant materials, high temperature fiber products with independent intellectual property rights in China, to break the monopoly of foreign companies of similar products, has an important significance. This article focuses on the current status of research of the synthesis and function of modified polysulfone amide fiber material.
Polysulfone amide resin general interface or low temperature solution polycondensation method:
Interfacial polycondensation of a monomer of high activity, fast response, most of the reaction is carried out in an organic solvent side and the monomer purity and when the ratio is not critical and the reaction is mainly concerned with the monomer concentration, trouble due to solvent recovery, the application is limited; The low temperature solution polycondensation method is homogeneous polymerization, the resulting polymer dispersion of smaller molecular weight, and can be prepared directly spinning slurry process route is shorter, easy operation, low consumption solvent.
Polysulfone amide with a high temperature, electrical insulation, resistance to burning, corrosion resistance, high resistance to radiation and good dimensional stability, after the textile processing and dyeing, available for industrial applications such as electric power, metallurgy, chemical industry, environmental protection, and aerospace engineering specific uses are summarized below:
(1) PSA fibers have a high temperature, electrical insulating properties and dimensional stability
Good qualitative EH grade high temperature electric edge paper can be used to produce a result, the use of the fiber production EH-level motor gasket material and
Conformal material can be achieved in the motor sizes small, light weight, high power, high efficiency in claim 14]. H class motor insulation paper the PSA fiber paper made of polyimide film composite can be used for lifting, metallurgy, mining DC motor, significantly prolong the life of the product, to improve performance.
(2) PSA fiber has excellent properties of high temperature, high strength, high modulus, etc., often used as a precipitator of high temperature flue gas purification filter.
PSA short fiber as 200-250 ℃ high temperature flue gas filtration material at higher temperatures, flue gas purification, can not only reduce pollution, improve the environment, and at the same time can save a lot of energy, and a large number of rare metals can be recycled to obtain significant economic benefits and social benefits.
(3) PSA fibers, no significant melting point, begin to decompose in the high temperature above 400 ℃, but not melted, no shrinkage or only showed a slight contraction from the flame, self-extinguishing, no continued burning or smoldering phenomenon, limiting oxygen index of 33_ applicable to the forest fire service, the live working subdue, the development of the aviation industry windproof clothing, ironing machine tablecloth, military heat-resistant, fire fighter clothing. PSA fabric has a soft, durable, and other aesthetic features, other inorganic ire fighter apparel fabric can not be compared.
The increasingly wide range of applications with the PSA and its fabric production technology and the improvement of product quality and performance, ¨. The destruction of the ozone layer, leading to the dramatic increase in the amount of ultraviolet radiation. Skin diseases are caused due to excessive ultraviolet radiation and growth rate of 5% per year, effectively blocking ultraviolet radiation health protection is very important.
In addition, the textile in the production, processing and use of the process, due to the mutual friction or friction with other materials will generate static electricity. Static electricity is not
Only lead to the textile processing difficulties, and easy vacuuming stain in the use of textiles, electrostatic severe cases may also cause fires, explosions and other disasters.
Polysulfone amide resin general interface or low temperature solution polycondensation method:
Interfacial polycondensation of a monomer of high activity, fast response, most of the reaction is carried out in an organic solvent side and the monomer purity and when the ratio is not critical and the reaction is mainly concerned with the monomer concentration, trouble due to solvent recovery, the application is limited; The low temperature solution polycondensation method is homogeneous polymerization, the resulting polymer dispersion of smaller molecular weight, and can be prepared directly spinning slurry process route is shorter, easy operation, low consumption solvent.
Polysulfone amide with a high temperature, electrical insulation, resistance to burning, corrosion resistance, high resistance to radiation and good dimensional stability, after the textile processing and dyeing, available for industrial applications such as electric power, metallurgy, chemical industry, environmental protection, and aerospace engineering specific uses are summarized below:
(1) PSA fibers have a high temperature, electrical insulating properties and dimensional stability
Good qualitative EH grade high temperature electric edge paper can be used to produce a result, the use of the fiber production EH-level motor gasket material and
Conformal material can be achieved in the motor sizes small, light weight, high power, high efficiency in claim 14]. H class motor insulation paper the PSA fiber paper made of polyimide film composite can be used for lifting, metallurgy, mining DC motor, significantly prolong the life of the product, to improve performance.
(2) PSA fiber has excellent properties of high temperature, high strength, high modulus, etc., often used as a precipitator of high temperature flue gas purification filter.
PSA short fiber as 200-250 ℃ high temperature flue gas filtration material at higher temperatures, flue gas purification, can not only reduce pollution, improve the environment, and at the same time can save a lot of energy, and a large number of rare metals can be recycled to obtain significant economic benefits and social benefits.
(3) PSA fibers, no significant melting point, begin to decompose in the high temperature above 400 ℃, but not melted, no shrinkage or only showed a slight contraction from the flame, self-extinguishing, no continued burning or smoldering phenomenon, limiting oxygen index of 33_ applicable to the forest fire service, the live working subdue, the development of the aviation industry windproof clothing, ironing machine tablecloth, military heat-resistant, fire fighter clothing. PSA fabric has a soft, durable, and other aesthetic features, other inorganic ire fighter apparel fabric can not be compared.
The increasingly wide range of applications with the PSA and its fabric production technology and the improvement of product quality and performance, ¨. The destruction of the ozone layer, leading to the dramatic increase in the amount of ultraviolet radiation. Skin diseases are caused due to excessive ultraviolet radiation and growth rate of 5% per year, effectively blocking ultraviolet radiation health protection is very important.
In addition, the textile in the production, processing and use of the process, due to the mutual friction or friction with other materials will generate static electricity. Static electricity is not
Only lead to the textile processing difficulties, and easy vacuuming stain in the use of textiles, electrostatic severe cases may also cause fires, explosions and other disasters.
keywords: Fire Fighter Apparel