Classifications

• • 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
• • A—HUMAN NECESSITIES
  • A41—WEARING APPAREL
  • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
  • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
  • A41D13/0002—Details of protective garments not provided for in groups A41D13/0007 - A41D13/1281
• • D—TEXTILES; PAPER
  • D03—WEAVING
  • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
  • D03D1/00—Woven fabrics designed to make specified articles
  • D03D1/0035—Protective fabrics
• • 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
  • D03D15/20—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 material of the fibres or filaments constituting the yarns or threads
  • D03D15/208—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 material of the fibres or filaments constituting the yarns or threads cellulose-based
  • D03D15/225—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 material of the fibres or filaments constituting the yarns or threads cellulose-based artificial, e.g. viscose
• • 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
  • D03D15/20—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 material of the fibres or filaments constituting the yarns or threads
  • D03D15/283—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 material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
• • 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
• • A—HUMAN NECESSITIES
  • A41—WEARING APPAREL
  • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
  • A41D2500/00—Materials for garments
  • A41D2500/20—Woven
• • 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
  • D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
  • D10B2201/20—Cellulose-derived artificial fibres
  • D10B2201/22—Cellulose-derived artificial fibres made from cellulose solutions
• • 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
  • D10B2331/14—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polycondensates of cyclic compounds, e.g. polyimides, polybenzimidazoles
• • 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
  • D10B2401/00—Physical properties
  • D10B2401/04—Heat-responsive characteristics
• • 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
  • D10B2501/00—Wearing apparel
  • D10B2501/04—Outerwear; Protective garments
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
  • Y10T442/3179—Woven fabric is characterized by a particular or differential weave other than fabric in which the strand denier or warp/weft pick count is specified
  • Y10T442/3293—Warp and weft are identical and contain at least two chemically different strand materials

Definitions

• the present invention relates to a flame-retardant fabric and protective clothing using the same.
• Patent Document 1 describes a fabric mainly composed of aramid fibers such as para-based aramid fibers and meta-based aramid fibers.
• aramid fibers such as para-based aramid fibers and meta-based aramid fibers.
• Patent Document 2 describes a flame-retardant fabric containing modacrylic fiber, cellulose fiber, and polyimide fiber.
• the carbonization length may become long in the combustion test, and it is required to further improve the flame-retardant property.
• the present invention provides a flame-retardant fabric having a short carbonization length in a combustion test and having good flame retardancy, and protective clothing using the same.
• the present invention is a flame-retardant fabric containing one or more regenerated cellulose fibers selected from the group consisting of acrylic fibers, flame-retardant rayon fibers and lyocell fibers, and polyimide fibers, and the flame-retardant fabric is an acrylic fiber. 26 to 79% by weight, regenerated cellulose fiber 18 to 48% by weight, and polyimide fiber 3 to 26% by weight, and the fiber length of the polyimide fiber was 45 to 127 mm, based on GB / T 5455-1997.
• the present invention relates to a flame-retardant fabric characterized in that the carbonization length measured by a flammability test is 50 mm or less.
• the present invention also relates to protective clothing characterized by using the above-mentioned flame-retardant fabric.
• the present invention can provide a flame-retardant fabric having a short carbonization length in a combustion test and having good flame retardancy, and protective clothing using the same.
• the inventor of the present invention has repeatedly studied to improve the flame retardancy of flame-retardant fabrics containing acrylic fibers, cellulose fibers, and polyimide fibers.
• the cloth is surprisingly made.
• the combustion test was carried out using the fiber, it was found that the carbonization length was shortened, specifically, it was 50 mm or less.
• the carbonization length of the fabric in the combustion test is shortened even when the content of the polyimide is small, specifically, it is 50 mm or less.
• the "carbonization length" can be measured by a flammability test based on GB / T 5455-1997, respectively.
• GB means the national standard of China.
• the present inventor has the same blending amount of each fiber in a flame-retardant fabric composed of a spun yarn containing an acrylic fiber, a flame-retardant rayon fiber and / or a lyocell fiber, and a polyimide fiber.
• a flame-retardant fabric composed of a spun yarn containing an acrylic fiber, a flame-retardant rayon fiber and / or a lyocell fiber, and a polyimide fiber.
• the fiber length of the polyimide fiber it was found that by setting the fiber length of the polyimide fiber to 45 to 127 mm, the carbonization length is remarkably shortened in the combustion test, and the flame retardancy is remarkably improved.
• the type of fiber that imparts flame retardancy to the fabric and the blending amount thereof have been mainly adjusted, and the fiber length of the fiber has been adjusted.
• the flame-retardant fabric contains 26 to 79% by weight of acrylic fibers, 18 to 48% by weight of regenerated cellulose fibers selected from the group consisting of flame-retardant rayon fibers and lyocell fibers, and 3 to 26% by weight of polyimide fibers. .. From the viewpoint of cost and flame retardancy, the flame retardant fabric contains 44.5 to 79% by weight of acrylic fibers and 18 to 48% by weight of regenerated cellulose fibers selected from the group consisting of flame-retardant rayon fibers and lyocell fibers. , And the polyimide fiber is preferably contained in an amount of 3 to 7.5% by weight.
• the flame-retardant fabric contains 26 to 79% by weight of acrylic fibers, 18 to 48% by weight of regenerated cellulose fibers selected from the group consisting of flame-retardant rayon fibers and lyocell fibers, and 3 polyimide fibers. It can be composed of spun yarn containing ⁇ 26% by weight. From the viewpoint of cost and flame retardancy, the flame retardant fabric contains 44.5 to 79% by weight of acrylic fibers and 18 to 48% by weight of regenerated cellulose fibers selected from the group consisting of flame-retardant rayon fibers and lyocell fibers. , And a spun yarn containing 3 to 7.5% by weight of polyimide fiber is preferable.
• the spun yarn can be produced by a known spinning method. The spinning method is not particularly limited, and examples thereof include ring spinning, air spinning, and air jet spinning.
• the polyimide fiber has a fiber length of 45 to 127 mm.
• the fiber length of the polyimide fiber is 45 mm or more, the flame retardancy can be improved and the carbonization length of the fabric can be remarkably shortened in the combustion test.
• the fiber length of the polyimide fiber is 127 mm or less, the spun yarn can be produced by a general-purpose spinning apparatus, and the productivity is improved.
• the polyimide fiber preferably has a fiber length of 45 to 76 mm, more preferably 45 to 64 mm, and even more preferably 45 to 55 mm.
• the polyimide fiber is not particularly limited, and for example, a polyimide fiber composed of a polyimide obtained by polymerizing a tetracarboxylic acid component and a diamine component can be appropriately used.
• tetracarboxylic acid component examples include tetracarboxylic dianhydride.
• the tetracarboxylic acid dianhydride is not particularly limited, but for example, 3,3', 4,4'-biphenyltetracarboxylic acid dianhydride (BPDA), pyromellitic acid dianhydride (PMDA), oxydiphthalic acid anhydride. (ODPA) and the like can be preferably used.
• BPDA 3,3', 4,4'-biphenyltetracarboxylic acid dianhydride
• PMDA pyromellitic acid dianhydride
• ODPA oxydiphthalic acid anhydride
• the tetracarboxylic dianhydride may be used alone or in combination of two or more.
• diamine component examples include diisocyanate compounds and diamine compounds.
• the diisocyanate compound is not particularly limited, but for example, 2,4-toluene diisocyanate, 2,5-toluene diisocyanate, 2,6-toluene diisocyanate and the like can be preferably used.
• the diamine compound is preferably an aromatic diamine compound.
• the aromatic diamine compound is not particularly limited, and is, for example, para-phenylenediamine (PPD), 2,2'-dimethyl-4,4'-diaminobiphenyl (m-trizine), 4,4'-diaminodiphenyl ether (ODA).
• diamine component one type may be used alone, or two or more types may be used in combination.
• the flame-retardant fabric is not particularly limited, but for example, from the viewpoint of flame retardancy and cost, the polyimide fiber is preferably contained in an amount of 3 to 7.5% by weight, more preferably 4 to 7% by weight. It is more preferably contained in an amount of 4.5 to 6.5% by weight, and particularly preferably contained in an amount of 5 to 6.5% by weight.
• polyimide fiber for example, a commercially available product such as ASPI® polyimide fiber manufactured by China Jiangsu Aoshen Hi-Tech Materials Co., LTD may be used.
• the acrylic fiber is preferably composed of an acrylonitrile-based copolymer obtained by copolymerizing 35 to 85% by weight of acrylonitrile and another component of 15 to 65% by weight.
• the other component from the viewpoint of flame retardancy, for example, it is preferable to use one or more selected from the group consisting of a halogen-containing vinyl monomer and a halogen-containing vinylidene monomer.
• the content of acrylonitrile in the acrylonitrile-based copolymer is more preferably 35 to 65% by weight.
• the content of the halogen-containing vinyl monomer and / or the halogen-containing vinylidene monomer in the acrylonitrile-based copolymer is more preferably 35 to 65% by weight.
• the acrylonitrile-based copolymer may further contain a monomer containing a sulfonic acid group.
• the content of the monomer containing a sulfonic acid group in the acrylonitrile-based copolymer is preferably 0 to 3% by weight.
• the acrylonitrile-based copolymer contains 35 to 85% by weight of acrylonitrile, and 15 to 65% by weight of one or more halogen-containing monomers selected from the group consisting of halogen-containing vinyl monomers and halogen-containing vinylidene monomers. It is preferable to contain 0 to 3% by weight of a monomer containing a sulfonic acid group, and one or more selected from the group consisting of 40 to 75% by weight of acrylonitrile, a halogen-containing vinyl monomer and a halogen-containing vinylidene monomer. It is more preferable to contain 24.5 to 60% by weight of the halogen-containing monomer and 0.5 to 3% by weight of the monomer containing a sulfonic acid group.
• the content of acrylonitrile in the acrylonitrile-based copolymer is 35 to 85% by weight, the physical characteristics of the acrylic fiber become good, and the physical characteristics of the flame-retardant fabric containing the acrylic fiber become good.
• the flame retardancy of the acrylic fiber becomes good, and by extension, it The flame retardancy of the flame-retardant fabric containing the above is also improved.
• the halogen-containing vinyl monomer is not particularly limited, and examples thereof include vinyl chloride and vinyl bromide.
• the halogen-containing vinylidene monomer is not particularly limited, and examples thereof include vinylidene chloride and vinylidene bromide. These halogen-containing vinyls and halogen-containing vinylidene monomers may be used alone or in combination of two or more.
• the monomer containing a sulfonic acid group is not particularly limited, and examples thereof include methacrylic sulfonic acid, allyl sulfonic acid, styrene sulfonic acid, 2-acrylamide-2-methylpropane sulfonic acid, and salts thereof. Be done.
• examples of the salt include, but are not limited to, sodium salt, potassium salt, ammonium salt and the like.
• the monomer containing these sulfonic acid groups one type may be used alone, or two or more types may be used in combination.
• a monomer containing a sulfonic acid group is used as needed, but if the content of the monomer containing a sulfonic acid group in the acrylonitrile-based copolymer is 3% by weight or less, it is used in the spinning step. Excellent production stability.
• the acrylic fiber preferably contains an antimony compound.
• the content of the antimony compound in the acrylic fiber is 3.9 to 20% by weight, preferably 4.2 to 18% by weight, and more preferably 4.5 to 16% by weight, based on the total weight of the fiber. It is more preferably 4.7 to 14% by weight.
• the content of the antimony compound is in the above-mentioned range, the carbonization length in the combustion test tends to be shorter, and the residual smoldering time is also shortened.
• the antimony compound is not particularly limited, but is preferably one or more selected from the group consisting of antimony trioxide, antimony tetroxide and antimony pentoxide from the viewpoint of production stability in the spinning process.
• the acrylic fiber for example, from the viewpoint of strength and productivity of the spinning process, short fibers having a fiber length of 30 to 127 mm can be appropriately used, preferably 45 to 127 mm, and preferably 45 to 76 mm. Is more preferable, and 45 to 64 mm is even more preferable.
• the acrylic fiber preferably has a fiber length substantially equal to that of the polyimide fiber.
• the flame-retardant fabric preferably contains the acrylic fiber in an amount of 44.5 to 65% by weight, more preferably 50 to 65% by weight, still more preferably 50 to 60% by weight. Includes% by weight.
• the flame-retardant rayon fiber is preferably a rayon fiber containing a phosphorus-based flame retardant.
• the phosphorus-based flame retardant is not particularly limited, and examples thereof include a phosphoric acid ester-based compound, a halogen phosphoric acid ester-based compound, a condensed phosphoric acid ester-based compound, a polyphosphate-based compound, and a polyphosphoric acid ester-based compound.
• the flame-retardant rayon fiber containing the phosphorus-based flame retardant is not particularly limited, but for example, the phosphorus-based flame retardant is preferably contained in an amount of 0.5% by weight or more, preferably 0.8% by weight, based on the total weight of the fiber. It is more preferable to include the above.
• flame-retardant rayon fiber containing the phosphorus-based flame retardant examples include flame-retardant rayon "Lening FR (registered trademark)” manufactured by Lensing and flame-retardant rayon “JWELL FR (trademark)” manufactured by Jilin Chemical Fibers. Commercially available ones may be used.
• the flame-retardant fabric contains 0.3% by weight or more of phosphorus, preferably 0.4% by weight or more, and more preferably 0.5% by weight or more, based on the total weight of the fabric.
• the upper limit of the phosphorus content in the flame-retardant fabric is not particularly limited, but from the viewpoint of shortening the carbonization length of the flame-retardant fabric, phosphorus is contained in an amount of 1.1% by weight or less based on the total weight of the fabric. Is preferable.
• the phosphorus content can be measured by a fluorescent X-ray analysis method.
• the flame-retardant fabric contains an acrylic fiber composed of an acrylonitrile-based copolymer obtained by copolymerizing acrylonitrile and a vinyl halide monomer
• the regenerated cellulose is used from the viewpoint of further improving the flame retardancy. It is preferable to include flame-retardant rayon fiber as the fiber.
• the flame-retardant fabric can provide excellent texture and hygroscopicity while improving flame retardancy.
• the flame-retardant fabric preferably contains the regenerated cellulose fiber in an amount of 18 to 45% by weight, more preferably 20 to 40% by weight.
• the flame-retardant rayon fiber and the lyocell fiber for example, short fibers having a fiber length of 30 to 127 mm can be appropriately used from the viewpoint of strength and productivity in the spinning process, preferably 45 to 127 mm. It is more preferably 76 mm, and even more preferably 45 to 64 mm. It is preferable that the flame-retardant rayon fiber and the lyocell fiber have a fiber length substantially equal to that of the polyimide fiber. As a result, the spinnability can be improved and the yarn quality such as strength can be improved, and eventually the physical properties of the flame-retardant fabric can be improved. It is particularly preferable that the acrylic fiber, the flame-retardant rayon fiber and the lyocell fiber have a fiber length substantially equal to that of the polyimide fiber.
• the flame-retardant fabric may contain other fibers as long as the object and effect of the present invention are not impaired.
• other fibers include conductive fibers, nylon fibers, polyester fibers and the like.
• the flame-retardant fabric may contain 5% by weight or less of other fibers, 3% by weight or less, or 1% by weight or less.
• the other fibers for example, short fibers having a fiber length of 30 to 127 mm can be appropriately used from the viewpoint of strength and productivity in the spinning process, and 45 to 127 mm from the viewpoint of productivity in the spinning process. Is more preferably 45 to 76 mm, and even more preferably 45 to 64 mm.
• the other fibers preferably have a fiber length substantially equal to that of the polyimide fiber.
• the spinnability can be improved and the yarn quality such as strength can be improved, and eventually the physical properties of the flame-retardant fabric can be improved.
• all the fibers constituting the spun yarn have a fiber length substantially equal to that of the polyimide fiber.
• the single fiber fineness of the acrylic fiber, the flame-retardant rayon fiber, the lyocell fiber and the other fibers is preferably 1 to 20 dtex, more preferably. Is 1.5 to 15 dtex.
• the flame-retardant fabric is not particularly limited, but from the viewpoint of flexibility and tactile sensation, the basis weight is preferably 100 to 500 g / m 2 , more preferably 130 to 480 g / m 2 , and further preferably 150. It is ⁇ 460 g / m 2 .
• the form of the flame-retardant fabric is not particularly limited, and examples thereof include woven fabrics and knitted fabrics. From the viewpoint of durability and flame retardancy, a woven fabric is preferable.
• the structure of the woven fabric is not particularly limited, and may be a plain weave, a twill weave, a satin weave, or the like, or a patterned woven fabric using a special loom such as a dobby or a jacquard.
• the flame-retardant fabric has excellent flame retardancy, and the carbonization length measured by the flammability test based on GB / T 5455-1997 is 50 mm or less. If the carbonization length is 50 mm or less, the carbonization length A-class standard of the "flame-retardant protective clothing" specified in GB8965.1-2009 is satisfied.
• the flame-retardant fabric has a carbonization length of 50 mm or less as measured by a flammability test based on GB / T 5455-1997 after washing 50 times according to GB / T 17596-1998.
• the flame-retardant fabric is excellent in flame-retardant property, and it is preferable that the residual smoldering time measured by the flammability test based on GB / T 5455-1997 is 2.0 seconds or less. More preferably, after washing 50 times according to GB / T 17596-1998, the residual smoldering time measured by the combustibility test based on GB / T 5455-1997 is 2.0 seconds or less. If the remaining smoldering time is 2.0 seconds or less, the A-class or B-class standard for the remaining smoldering time of the "flame-retardant protective clothing" specified in GB8965.1-2009 is satisfied.
• the flame-retardant fabric preferably has a carbonization length of 50 mm or less and a residual smoldering time of 2.0 seconds or less, and has a carbonization length of 50 mm or less after washing 50 times according to GB / T 17596-1998. Moreover, it is particularly preferable that the residual carbonization time is 2.0 seconds or less.
• the flame-retardant fabric is excellent in flame-retardant property, and it is preferable that the residual flame time measured by the flammability test based on GB / T 5455-1997 is 2.0 seconds or less. More preferably, after washing 50 times according to GB / T 17596-1998, the residual flame time measured by the combustibility test based on GB / T 5455-1997 is 2.0 seconds or less. If the after-flame time is 2.0 seconds or less, the A-class or B-class standard for the after-flame time of the "flame-retardant protective clothing" specified in GB8965.1-2009 is satisfied.
• the flame-retardant cloth of the present invention can be suitably used as a protective clothing cloth that is required to be flame-retardant, and it is possible to provide a protective clothing having excellent flame-retardant properties using the flame-retardant cloth at low cost.
• the protective clothing of the present invention can be manufactured by a known sewing method using the above-mentioned flame-retardant fabric. Since the flame-retardant fabric has excellent flame-retardant properties, the protective clothing of the present invention also has excellent flame-retardant properties. Further, since the flame-retardant fabric has excellent flame-retardant property even after repeated washing, the protective clothing maintains its flame-retardant property even after repeated washing.
• the protective clothing of the present invention can be used as protective clothing during all work where flame retardancy is required.
• protective clothing worn at work sites where fires such as oil, petrification, coal mining, electric power and welding may occur, and protective clothing worn at work sites where dust explosion such as metal processing is expected. Can be used.
• the acrylic fiber I is composed of an acrylic copolymer composed of 49.5% by weight of acrylonitrile, 49.5% by weight of vinyl chloride and 1.0% by weight of sodium styrene sulfonate, and is an antimony trioxide with respect to the total weight of the fiber. 9.1% by weight of acrylic fiber was used.
• Acrylic fiber I Fineness 1.7dtex, fiber length 51mm Flame-retardant rayon fiber: "LensingFR” manufactured by Lenting, containing a phosphorus-based flame retardant, fineness 2.2 dtex, fiber length 51 mm Lyocell fiber: “Tencel (registered trademark)” manufactured by Lenting, fineness 1.3dtex, fiber length 51mm Polyimide fiber I: China Jiangsu Aoshen Hi-Tech Materials Co., LTD “ASPI (registered trademark)", fineness 1.67dtex, fiber length 51mm Polyimide Fiber II: China Jiangsu Aoshen Hi-Tech Materials Co., LTD “ASPI (Registered Trademark)", Fineness 1.67dtex, Fiber Length 38mm
• Examples 1 to 3, Comparative Examples 1 to 3 The acrylic fiber, flame-retardant rayon fiber, lyocell fiber and polyimide fiber described above were mixed in the blending amounts shown in Table 1 below to produce a spun yarn having a cotton count shown in Table 1 below. Using these spun yarns as warp yarns and weft yarns, a woven fabric having a 2/1 twill structure was produced by a usual manufacturing method. The number of driving was as shown in Table 1 below.
• the fabrics of Examples 1 to 3 had a carbonization length of 50 mm or less measured by a flammability test based on GB / T 5455-1997, and were excellent in flame retardancy.
• the fabrics of Comparative Examples 1 to 3 using polyimide fibers having a fiber length of less than 45 mm have a carbonization length of more than 50 mm as measured by a flammability test based on GB / T 5455-1997, and have flame retardancy. It was inferior.

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• 2020
  • 2020-09-28 JP JP2022551103A patent/JP7621369B2/ja active Active
  • 2020-09-28 US US18/044,737 patent/US20230270194A1/en active Pending
  • 2020-09-28 CN CN202080105332.XA patent/CN116249805B/zh active Active
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