WO2021049200A1 - 難燃性繊維複合体及び難燃性作業服 - Google Patents

難燃性繊維複合体及び難燃性作業服 Download PDF

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Publication number
WO2021049200A1
WO2021049200A1 PCT/JP2020/029498 JP2020029498W WO2021049200A1 WO 2021049200 A1 WO2021049200 A1 WO 2021049200A1 JP 2020029498 W JP2020029498 W JP 2020029498W WO 2021049200 A1 WO2021049200 A1 WO 2021049200A1
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Prior art keywords
fiber
flame
mass
retardant
acrylic
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Ceased
Application number
PCT/JP2020/029498
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English (en)
French (fr)
Japanese (ja)
Inventor
尾崎彰
中村晋也
内堀恵太
見尾渡
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Kaneka Corp
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Kaneka Corp
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Priority to KR1020227007078A priority Critical patent/KR102654523B1/ko
Priority to CN202080059886.0A priority patent/CN114364832B/zh
Priority to EP20863733.0A priority patent/EP4029977B1/en
Priority to JP2021545159A priority patent/JP7263527B2/ja
Publication of WO2021049200A1 publication Critical patent/WO2021049200A1/ja
Priority to US17/674,124 priority patent/US12144389B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • A41D31/08—Heat resistant; Fire retardant
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/54—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polymers of unsaturated nitriles
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/443—Heat-resistant, fireproof or flame-retardant yarns or threads
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/28—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/40—Modacrylic fibres, i.e. containing 35 to 85% acrylonitrile
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/04—Blended or other yarns or threads containing components made from different materials
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/513—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads heat-resistant or fireproof
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4282—Addition polymers
    • D04H1/43—Acrylonitrile series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/4334—Polyamides
    • D04H1/4342—Aromatic polyamides
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2211/00—Protein-based fibres, e.g. animal fibres
    • D10B2211/01—Natural animal fibres, e.g. keratin fibres
    • D10B2211/02—Wool
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/08—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated carboxylic acids or unsaturated organic esters, e.g. polyacrylic esters, polyvinyl acetate
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/10—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/10—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
    • D10B2321/101—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide modacrylic
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
    • D10B2331/021—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides aromatic polyamides, e.g. aramides
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]

Definitions

  • the present invention relates to a flame-retardant fiber composite containing acrylic fibers and flame-retardant work clothes.
  • a halogen-containing fiber such as an acrylic fiber
  • an antimony compound for example, Patent Document 1.
  • a zinc tinate compound is also used in addition to the antimony compound (for example, Patent Document 2).
  • the present invention contains a flame-retardant fiber composite and a flame-retardant work clothes which contain acrylic fibers and can exhibit high flame retardancy while suppressing the influence of the flame retardant on the environment. I will provide a.
  • the present invention is a flame-retardant fiber composite containing an acrylic fiber A composed of an acrylic copolymer and an aramid fiber, wherein the acrylic fiber A is an antimony compound.
  • the present invention relates to a flame-retardant fiber composite which is substantially free of and forms a surface-foamed carbonized layer during combustion.
  • the present invention relates to flame-retardant work clothes containing the flame-retardant fiber composite in one or more embodiments.
  • a flame-retardant fiber composite and flame-retardant work clothes containing acrylic fibers and having high flame retardancy capable of exhibiting high flame retardancy while suppressing the influence of flame retardants on the environment can be obtained.
  • the inventors of the present invention have repeatedly studied how to improve the flame retardancy of a fiber complex containing an acrylic fiber while suppressing the influence of the flame retardant on the environment.
  • the fiber composite contains an acrylic fiber composed of an acrylic copolymer and an aramid fiber, and a surface foamed carbonized layer is formed at the time of combustion to form an antimony compound or a tin acid. It has been found that high flame retardancy can be exhibited without using a flame retardant which is concerned about the influence on the environment due to the elution and discharge of zinc compounds and the like.
  • the acrylic-based copolymer is used. It has been found that a fiber composite containing an acrylic fiber and an aramid fiber composed of a copolymer easily forms a surface foamed carbonized layer at the time of combustion and exhibits high flame retardancy. Although the mechanism is not clear, when acrylic fibers composed of a copolymer of acrylonitrile and vinyl chloride are used, when the fiber composite is burned, the surface foamed carbonized layer is formed after the acrylic fibers containing magnesium oxide are melted. It is presumed that it will be easier to form and flame retardancy will increase.
  • combustion test sample A combustion test sample of 20 cm in length ⁇ 20 cm in width ⁇ 2 mm is cut out from the fiber complex.
  • Combustion test Prepare a pearlite plate with a diameter of 15 cm in the center of a pearlite plate with a length of 20 cm, a width of 20 cm, and a thickness of 1 cm. Fix the four sides with clips so that they do not shrink.
  • the flame-retardant fiber composite includes an acrylic fiber A composed of an acrylic copolymer and an aramid fiber.
  • the flame-retardant fiber composite "forms a surface-foamed carbonized layer at the time of combustion", that is, forms an intomesent at the time of combustion, thereby blocking oxygen supply and heat conduction, and has high flame retardancy. Demonstrate.
  • the acrylic copolymer preferably contains 20 to 85% by mass of acrylonitrile and 15 to 80% by mass of vinyl chloride when the acrylic copolymer is 100% by mass. , 30 to 70% by mass of acrylonitrile, 30 to 70% by mass of vinyl chloride, and 0 to 10% by mass of other vinyl-based monomers copolymerizable with these, and 40 to 70% by mass of acrylonitrile. , 30 to 60% by mass of vinyl chloride, and 0 to 3% by mass of other vinyl-based monomers copolymerizable therewith.
  • acrylonitrile is within the above range, the heat resistance becomes good. If the amount of vinyl chloride is within the above range, the flame retardancy becomes good.
  • the other copolymerizable vinyl-based monomer is not particularly limited, and for example, unsaturated carboxylic acids typified by acrylic acid and methacrylic acid, salts thereof, and methacrylic acid esters typified by methyl methacrylate.
  • unsaturated carboxylic acids typified by acrylic acid and methacrylic acid, salts thereof
  • methacrylic acid esters typified by methyl methacrylate.
  • Esters of unsaturated carboxylic acids typified by glycidyl methacrylate, vinyl esters typified by vinyl acetate and vinyl butyrate, sulfonic acid-containing monomers and the like can be used.
  • the sulfonic acid-containing monomer is not particularly limited, but includes allyl sulfonic acid, metallic sulfonic acid, styrene sulfonic acid, isoprene sulfonic acid, 2-acrylamide-2-methylpropane sulfonic acid, and metal salts such as sodium salts thereof. Amin salts and the like can be used. One of these other copolymerizable vinyl-based monomers may be used alone, or two or more thereof may be used in combination.
  • the acrylic copolymer can be obtained by a known polymerization method such as bulk polymerization, suspension polymerization, emulsion polymerization, or solution polymerization. Of these, emulsion polymerization or solution polymerization is preferable from an industrial point of view.
  • the acrylic fiber A contains 3 parts by mass of magnesium oxide with respect to 100 parts by mass of the acrylic copolymer. It is preferably contained in an amount of 4 parts by mass or more, more preferably 4 parts by mass or more, and further preferably 5 parts by mass or more. Further, in one or more embodiments of the present invention, from the viewpoints of strength, spinnability, anti-coloring, dyeability, etc., the acrylic fiber A contains 20 magnesium oxide with respect to 100 parts by mass of the acrylic copolymer. It is preferably contained in an amount of 10 parts by mass or less, more preferably 15 parts by mass or less, and further preferably 10 parts by mass or less.
  • the acrylic fiber A preferably has a critical oxygen coefficient (LOI) of 30 or more, more preferably 35 or more, and more preferably 40 or more, from the viewpoint of excellent flame retardancy. Is more preferable.
  • the LOI can be measured as follows. ⁇ LOI measurement method> Take 2 g of fiber (wat), divide it into 8 equal parts, make 8 pieces of about 6 cm, and stand them upright on the holder of the oxygen index type flammability tester (manufactured by Suga Test Instruments Co., Ltd .; ON-1M). The minimum oxygen concentration required for the sample to continue burning 5 cm is measured, and this is used as the LOI value. The larger the LOI value, the harder it is to burn and the higher the flame retardancy.
  • the acrylic fiber A is substantially free of antimony compounds.
  • substantially free of antimony compounds means that antimony compounds are not intentionally contained, and when antimony compounds are contained as impurities or the like. Will be “substantially free of antimony compounds”.
  • the acrylic fiber A does not substantially contain the zinc tinate compound.
  • substantially free of zinc succinate compound means that the zinc succinate compound is not intentionally contained, and the zinc succinate compound is a contaminant or the like. When it is contained as, it means that it "substantially contains no zinc phosphate compound”.
  • the acrylic fiber A may contain, if necessary, another flame retardant other than magnesium oxide, which is not concerned about the influence on the environment due to elution or discharge. Further, in one or more embodiments of the present invention, the acrylic fiber A may be an antistatic agent, a heat coloring inhibitor, a light resistance improving agent, a whiteness improving agent, a devitrification inhibitor, a coloring agent, etc., if necessary. Other additives may be included.
  • the acrylic fiber A preferably has a single fiber strength of 1.0 to 4.0 cN / dtex, preferably 1.5 to 3.5 cN /, from the viewpoint of durability, for example. It is more preferably dtex. In one or more embodiments of the present invention, the acrylic fiber A preferably has an elongation of 20 to 40%, more preferably 20 to 30%, for example, from the viewpoint of practicality. In one or more embodiments of the present invention, the single fiber strength and elongation can be measured according to JIS L 1015.
  • the acrylic fiber A may be a short fiber or a long fiber, and can be appropriately selected depending on the method of use.
  • the single fiber fineness is appropriately selected depending on the use of the fiber complex used, but is preferably 1 to 50 dtex, more preferably 1.5 to 30 dtex, still more preferably 1.7 to 15 dtex.
  • the cut length is appropriately selected depending on the application of the fiber complex. For example, shortcut fibers (fiber length 0.1 to 5 mm), short fibers (fiber length 38 to 128 mm), or long fibers (filaments) that are not cut at all can be mentioned.
  • the acrylic fiber A is not particularly limited, but preferably, the acrylic copolymer containing acrylonitrile and vinyl chloride and the composition containing magnesium oxide are spun and then heat-treated.
  • a wet spinning method the same as in the case of general acrylic fibers, except that the acrylic copolymer is dissolved in an organic solvent and then a spinning stock solution obtained by adding magnesium oxide to the copolymer is used.
  • It can be produced by coagulating the undiluted spinning solution by extruding it into a coagulation bath through a nozzle, then stretching, washing with water, drying, and heat-treating, and if necessary, crimping and cutting.
  • the organic solvent include dimethylformamide, dimethylacetamide, acetone, rodane salt aqueous solution, dimethyl sulfoxide, nitric acid aqueous solution and the like.
  • Magnesium oxide is not particularly limited, but from the viewpoint of being easily dispersed in acrylic fibers, the average particle size is preferably 3 ⁇ m or less, and more preferably 2 ⁇ m or less. Further, although not particularly limited, magnesium oxide preferably has an average particle size of 0.01 ⁇ m or more, and more preferably 0.1 ⁇ m or more, from the viewpoint of handleability and availability. In one or more embodiments of the present invention, the average particle size of magnesium oxide can be measured by laser diffraction in the case of powder, and in the case of a dispersion (dispersion liquid) dispersed in water or an organic solvent. , Can be measured by laser diffraction method or dynamic light scattering method.
  • the aramid fiber may be a para-aramid fiber or a meta-aramid fiber.
  • the flame-retardant fiber composite is 5 to 95% by mass of acrylic fiber A and 5 to 95% by mass of aramid fiber from the viewpoint of flame retardancy, although not particularly limited. %, More preferably 10 to 90% by mass of acrylic fiber A, and 10 to 90% by mass of aramid fiber, 30 to 90% by mass of acrylic fiber A, and 10 aramid fiber. It is more preferably contained in an amount of about 70% by mass, more preferably 50 to 90% by mass of the acrylic fiber A and 10 to 50% by mass of the aramid fiber, and 80 to 90% by mass of the acrylic fiber A. It is particularly preferable to contain 10 to 20% by mass of aramid fibers.
  • other fibers may be contained in addition to the acrylic fiber A and the aramid fiber, as long as the effect of the present invention is not impaired. ..
  • other fibers include natural fibers, regenerated fibers, other synthetic fibers and the like.
  • Natural fibers include cotton fiber, capoc fiber, flax fiber, cannabis fiber, ramie fiber, jute fiber, Manila hemp fiber, kenaf fiber and other natural cellulose fibers; wool fiber, mohair fiber, cashmere fiber, camel fiber, alpaca fiber, angora. Examples include natural animal fibers such as fibers and silk fibers.
  • regenerated fiber examples include regenerated cellulose fiber such as rayon, polynosic, cupra, and lyocell, regenerated collagen fiber, regenerated protein fiber, cellulose acetate fiber, and promix fiber.
  • Synthetic fibers include polyester fiber, polyamide fiber, polylactic acid fiber, acrylic fiber, polyolefin fiber, polyvinyl alcohol fiber, polyvinyl chloride fiber, polyvinylidene chloride fiber, polyclar fiber, polyethylene fiber, polyurethane fiber, polyoxymethylene fiber, and poly. Examples thereof include tetrafluoroethylene fiber, benzoate fiber, polyphenylene sulfide fiber, polyether ether ketone fiber, polybenzazole fiber, polyimide fiber, polyamideimide fiber and the like. Further, as the synthetic fiber, flame-retardant polyester, polyethylene naphthalate fiber, melamine fiber, acrylate fiber, polybenzoxide fiber and the like may be used. In addition, acrylic oxide fiber, carbon fiber, glass fiber, activated carbon fiber and the like can be mentioned.
  • natural fibers regenerated cellulose fibers, polyester fibers, and melamine fibers are preferable, and more preferably, they are selected from the group consisting of wool fibers, cellulose fibers, and polyester fibers from the viewpoint of flame retardancy, cost, texture, and the like.
  • One or more fibers more preferably polyester fibers.
  • the flame-retardant fiber composite may contain, for example, 90% by mass or less of other fibers, and 85% by mass or less, within the range of forming a surface foamed carbonized layer at the time of combustion. However, it may contain 65% by mass or less, and may contain 60% by mass or less.
  • the flame-retardant fiber composite includes, for example, 5 to 95% by mass of acrylic fiber A, 5 to 95% by mass of aramid fiber, and other fibers. It is preferable to contain 0 to 90% by mass of acrylic fiber A, 10 to 90% by mass of aramid fiber, and 0 to 85% by mass of other fibers, and acrylic fiber.
  • examples of the flame-retardant fiber composite include mixed cotton, mixed spinning, mixed fiber, pull-aligned yarn, synthetic yarn, composite yarn such as core sheath, mixed weaving, mixed knitting, and lamination.
  • Specific forms include cotton such as padding, non-woven fabrics, woven fabrics, knitted fabrics, braids and the like.
  • Examples of cotton such as stuffing include spread fiber cotton, ball cotton, web, molded cotton, and the like.
  • non-woven fabric examples include wet-made non-woven fabric, card non-woven fabric, air-laid non-woven fabric, thermal bond non-woven fabric, chemically bonded non-woven fabric, needle punch non-woven fabric, water flow entangled non-woven fabric, stitch bond non-woven fabric and the like.
  • Thermal bond non-woven fabric and needle punch non-woven fabric are industrially inexpensive.
  • the non-woven fabric may have any of a uniform structure, a clear laminated structure, and an unclear laminated structure in the thickness, width, and length directions.
  • Knitting includes round knitting, weft knitting, warp knitting, pile knitting, etc. Examples include chain tissue and insertion tissue.
  • the Tenjiku and Rib editions have excellent product texture.
  • the textile product comprises the flame-retardant fiber composite, and examples thereof include the following products.
  • Clothing and daily necessities materials Clothing including jackets, underwear, sweaters, vests, trousers, etc.
  • Special clothing Protective clothing, firefighting clothing , Work clothes, winter clothes, etc. (3) Interior materials Chair upholstery, curtains, wallpaper, carpets, etc.
  • the flame-retardant fiber composite can shield the supply of oxygen and the conduction of heat by forming a surface foamed carbide layer during combustion, and therefore, for example, the flame-retardant fiber composite can be flame-shielded.
  • bedding or furniture such as bed mattresses, pillows, comforters, bed spreads, mattress pads, futons, cushions, chairs and other flame-retardant upholstered products, it is intended to impart high flame retardancy.
  • bed mattresses include pocket coil mattresses and box coil mattresses in which metal coils are used inside, insulators in which styrene or urethane resin is foamed, and mattresses in which low-resilience urethane is used inside. Be done.
  • Chairs used indoors include stools, benches, side chairs, arm chairs, lounge chairs / sofas, seat units (separate chairs, separate chairs), locking chairs, folding chairs, stacking chairs, swivel chairs, or outdoors. Examples thereof include automobile seats, marine seats, aircraft seats, train seats, etc., which are used for vehicle seats and the like.
  • flame-shielding fabrics may be used in the form of woven or knitted fabrics on the surface, or woven or knitted fabrics between the surface fabrics and internal structures such as urethane foam or stuffed cotton. , May be sandwiched in the form of non-woven fabric.
  • the flame-shielding fabric may be used instead of the conventional surface fabric.
  • the surface fabric may be sandwiched in the manner of stacking two sheets, or the internal structure may be covered with the flame-shielding fabric.
  • the flame-shielding fabric When the flame-shielding fabric is sandwiched between the surface fabric and the internal structure, be sure to cover the entire internal structure with the flame-shielding fabric on the outside of the internal structure, at least for the portion in contact with the surface fabric. , It is preferable to stretch the surface fabric over it.
  • the flame-shielding fabric can be composed of, for example, the following flame-retardant fiber composite.
  • Acrylic fiber A is contained in an amount of 35 to 70% by mass, aramid fiber is contained in an amount of 5 to 20% by mass, and wool fiber is contained in an amount of 10 to 60% by mass.
  • Acrylic fiber A is contained in an amount of 35 to 80% by mass, aramid fiber is contained in an amount of 5 to 20% by mass, and natural cellulosic fiber and / or regenerated cellulose fiber is contained in an amount of 10 to 60% by mass.
  • Acrylic fiber A is contained in an amount of 45 to 70% by mass, aramid fiber is contained in an amount of 15 to 20% by mass, and polyester fiber is contained in an amount of 10 to 40% by mass.
  • the flame-retardant fiber composite can shield the supply of oxygen and the conduction of heat by forming a surface-foamed carbonized layer during combustion, and therefore, for example, the flame-retardant fiber composite was used.
  • Flame-retardant work clothes have high flame-retardant properties.
  • the flame-retardant work clothes can be made of, for example, the following flame-retardant fiber composite.
  • Acrylic fiber A is contained in an amount of 35 to 70% by mass, aramid fiber is contained in an amount of 5 to 20% by mass, and wool fiber is contained in an amount of 10 to 60% by mass.
  • Acrylic fiber A is contained in an amount of 35 to 70% by mass, aramid fiber is contained in an amount of 5 to 20% by mass, and natural cellulosic fiber and / or regenerated cellulose fiber is contained in an amount of 10 to 60% by mass.
  • Acrylic fiber A is contained in an amount of 45 to 70% by mass, aramid fiber is contained in an amount of 15 to 20% by mass, and polyester fiber is contained in an amount of 10 to 40% by mass.
  • Example 1 ⁇ Manufacturing of acrylic fiber> Acrylonitrile 50% by mass, vinyl chloride 49.5% by mass obtained by emulsion polymerization of acrylonitrile, vinyl chloride and sodium p-styrene sulfonate, and 0.5% by mass of sodium p-styrene sulfonate.
  • the coalescence was dissolved in dimethylformamide so that the resin concentration was 30% by mass.
  • 5 parts by mass of magnesium oxide (MgO, manufactured by Kyowa Chemical Industry Co., Ltd., product name "500-04R”) was added to 100 parts by mass of the resin to prepare a spinning stock solution.
  • MgO manufactured by Kyowa Chemical Industry Co., Ltd., product name "500-04R”
  • the magnesium oxide was added in advance in an amount of 30% by mass with respect to dimethylformamide, and was uniformly dispersed and used as a dispersion liquid.
  • the average particle size of magnesium oxide measured by the laser diffraction method was 2 ⁇ m or less.
  • the obtained spinning stock solution was extruded into a 50 mass% dimethylformamide aqueous solution using a nozzle having a nozzle hole diameter of 0.08 mm and a hole number of 300 holes to solidify it, then washed with water and dried at 120 ° C., and tripled after drying. After stretching, an acrylic fiber was obtained by further heat-treating at 145 ° C. for 5 minutes.
  • the obtained acrylic fiber of Example 1 had a single fiber fineness of 1.7 dtex, a strength of 2.5 cN / dtex, an elongation of 26%, and a cut length of 51 mm.
  • the fineness, strength and elongation of the acrylic fiber were measured based on JIS L 1015.
  • ⁇ Manufacturing of fiber complex 90 parts by mass of the acrylic fiber A obtained above and 10 parts by mass of a para-aramid fiber (Taparan (registered trademark), single fiber fineness 1.67 dtex, fiber length 51 mm) manufactured by Yantai Tayho Advanced Materials Co., Ltd.
  • a non-woven fabric having the basis weights shown in Table 1 was prepared by mixing cotton, opening the fibers with a curd, and then using a needle punching method.
  • Example 2 ⁇ Manufacturing of fiber complex> 50 parts by mass of acrylic fiber A obtained in the same manner as in Example 1, para-aramid fiber (manufactured by Yantai Tayho Advanced Materials Co., Ltd., Taparan (registered trademark), single fiber fineness 1.67 dtex, fiber length 51 mm ) 10 parts by mass and 40 parts by mass of regenerated cellulose fiber (Tencel, single fiber fineness 1.3 dtex, fiber length 38 mm) manufactured by Lenting Co., Ltd. A non-woven fiber having the above was prepared.
  • Example 3 ⁇ Manufacturing of acrylic fiber> Acrylic fiber A was produced in the same manner as in Example 1 except that 10 parts by mass of magnesium oxide was added to 100 parts by mass of the resin to prepare a spinning stock solution. ⁇ Manufacturing of fiber complex> A non-woven fabric having the basis weights shown in Table 1 was produced in the same manner as in Example 1 except that the acrylic fiber A obtained above was used.
  • the obtained acrylic fiber had a single fiber fineness of 1.76 dtex, a strength of 2.8 cN / dtex, an elongation of 29.2%, and a cut length of 51 mm.
  • a non-woven fabric having the basis weights shown in Table 1 was produced in the same manner as in Example 1 except that the acrylic fibers obtained above were used.
  • the obtained acrylic fiber had a single fiber fineness of 1.75 dtex, a strength of 1.66 cN / dtex, an elongation of 22.9%, and a cut length of 51 mm.
  • a non-woven fabric having the basis weights shown in Table 1 was produced in the same manner as in Example 1 except that the acrylic fibers obtained above were used.
  • Example 5 A non-woven fabric having the basis weights shown in Table 1 was prepared in the same manner as in Example 1 except that only 100 parts by mass of acrylic fibers prepared in the same manner as in Example 1 was used.
  • the thickness before the combustion test was measured at four points 1, 2, 3 and 4 where the distances L1 and L2 from the end of the sample were all 3 cm. , The average.
  • the thickness after the combustion test was measured at four points 5, 6, 7 and 8 where the distances L3 and L4 from the end of the sample were all 8 cm. , The average.
  • Thickness change rate (%) (Hb-Ha) / Ha ⁇ 100% Ha means the thickness of the combustion test sample before the combustion test, and Hb means the thickness of the combustion test sample before and after the combustion test.
  • the fiber composite of the example had a surface-foamed carbonized film formed at the time of combustion and had high flame retardancy.
  • the fiber composite of the comparative example did not form a surface foamed carbonized film at the time of combustion, and was inferior in flame retardancy.
  • the present invention can be implemented in a form other than the above as long as it does not deviate from the gist thereof.
  • the embodiments disclosed in the present application are examples, and the present invention is not limited thereto.
  • the scope of the present invention is interpreted based on the description of the claims, and all changes within the scope of the claims are included in the claims.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Artificial Filaments (AREA)
  • Woven Fabrics (AREA)
PCT/JP2020/029498 2019-09-10 2020-07-31 難燃性繊維複合体及び難燃性作業服 Ceased WO2021049200A1 (ja)

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CN202080059886.0A CN114364832B (zh) 2019-09-10 2020-07-31 阻燃性纤维复合体和阻燃性工作服
EP20863733.0A EP4029977B1 (en) 2019-09-10 2020-07-31 Flame-retardant fiber composite and flame-retardant working clothes
JP2021545159A JP7263527B2 (ja) 2019-09-10 2020-07-31 難燃性繊維複合体及び難燃性作業服
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