Flame-retardant fabric and textile products

Abstract

To provide a flame-retardant fabric and a textile product excellent in not only flame retardancy but also abrasion resistance, and preferably, pilling resistance.SOLUTION: A flame-retardant fabric and a textile product are obtained by making a meta-type wholly aromatic polyamide fiber containing a flame retardant and having a breaking elongation of 40% or more into a spun yarn, and then making the spun yarn into the flame-retardant fabric and the textile product.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a flame-retardant fabric and a fiber product that are not only excellent in flame retardancy but also in abrasion resistance, and preferably also in pilling resistance.

Background Art

[0002] An all-aromatic polyamide produced from an aromatic diamine and an aromatic dicarboxylic acid dihalide is excellent in heat resistance and flame retardancy. Further, the all-aromatic polyamide is soluble in an amide-based polar solvent, and fibers can be formed from a polymer solution in which the all-aromatic polyamide is dissolved in the solvent by a method such as dry spinning, wet spinning, or semi-dry semi-wet spinning.

[0003] Among all-aromatic polyamides, fibers made of meta-type all-aromatic polyamides (sometimes referred to as "meta-aramids") typified by polymetaphenylene isophthalamide are particularly useful as heat-resistant and flame-retardant fibers, and are used in industrial applications such as filters and electronic components, and in disaster prevention safety clothing applications such as protective clothing where heat resistance, flame prevention, and flame resistance are emphasized. Recently, not only industrial applications, but also applications in fields where aesthetic and visual properties are required, such as bedding, clothing, and interiors, are rapidly expanding.

[0004] In these fields, the flame retardancy of meta-type all-aromatic polyamide fibers is required to be higher and more stable from the viewpoints of fire prevention and human life protection. Therefore, in order to improve the flame retardancy of meta-type all-aromatic polyamide fibers, methods of adding an organic phosphorus compound, a phosphorus-containing phenolic resin, a halogen compound, etc. to the polymer have been proposed. Further, a method of improving the flame retardancy by blending an organic phosphorus compound containing a halogen atom has been proposed (Patent Document 1). However, fabrics using meta-type all-aromatic polyamide fibers containing a flame retardant have a problem of low abrasion resistance.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] The present invention has been made in view of the above background, and an object thereof is to provide a flame-retardant fabric and a fiber product that are excellent not only in flame retardancy but also in abrasion resistance, and preferably in pilling resistance.

Means for Solving the Problems

[0007] As a result of intensive studies to achieve the above problems, the present inventor has found that a flame-retardant fabric excellent not only in flame retardancy but also in abrasion resistance can be obtained by skillfully devising the fibers constituting the fabric, and has further completed the present invention by repeating intensive studies.

[0008] Thus, according to the present invention, there is provided "a flame-retardant fabric containing a spun yarn containing meta-type wholly aromatic polyamide fiber, wherein the meta-type wholly aromatic polyamide fiber contains a flame retardant and the elongation at break of the meta-type wholly aromatic polyamide fiber is 40% or more, characterized by a flame-retardant fabric."

[0009] At that time, it is preferable that the breaking strength of the meta-type wholly aromatic polyamide fiber is in the range of 3.0 to 4.0 cN / dtex. Further, it is preferable that the breaking strength and the elongation at break have the relationship of the following formula. Y = -20X + 120 ± 10 However, X is the breaking strength and Y is the elongation at break.

[0010] Further, it is preferable that the meta-type wholly aromatic polyamide fiber is contained in the spun yarn at 20% by weight or more based on the weight of the spun yarn. Further, in the abrasion test defined in ISO12947-2 (Martindale), it is preferable that the number of times until two yarns constituting the fabric are broken is 20,000 times or more. Further, in the pilling test defined in JIS L 1076 A method, it is preferable that the judgment after 10 hours of the test time is grade 4 or higher. Further, in the combustion test defined in ISO15025 B method, it is preferable that the char length is 50 mm or less.

[0011] Further, according to the present invention, there is provided any fiber product selected from the group consisting of protective clothing, fireproof and fire-fighting clothing, fire-fighting activity clothing, rescue clothing, workwear, police uniforms, Self-Defense Force clothing, and military uniforms, which is made using the flame-retardant fabric described above.

Effect of the Invention

[0012] According to the present invention, a fabric excellent not only in flame retardancy but also in abrasion resistance and pilling resistance can be obtained.

Modes for Carrying Out the Invention

[0013] Hereinafter, embodiments of the present invention will be described in detail. First, the flame-retardant fabric of the present invention contains a spun yarn containing a meta-type wholly aromatic polyamide fiber (meta-aramid fiber) containing a flame retardant and having an elongation at break of 40% or more (preferably 40 to 60%).

[0014] Here, in such a meta-type wholly aromatic polyamide fiber, it is preferable that the limiting oxygen index LOI during combustion is 30 or more. Further, when such a meta-type wholly aromatic polyamide fiber does not contain a flame retardant, the flame retardancy of the fabric may decrease, which is not preferable.

[0015] In addition, if the elongation at break is less than 40%, the orientation degree of polyamide molecules in the fiber increases, making fibrillation likely to occur and there is a risk of not obtaining good abrasion resistance. A larger elongation at break is preferable. On the other hand, if the elongation at break exceeds 60%, pills generated during abrasion are unlikely to fall off, and there is a risk of not obtaining good pilling property.

[0016] Here, the meta-type wholly aromatic polyamide fiber is a fiber composed of a polymer in which 85 mol% or more of its repeating units are m-phenylene isophthalamide. Such a meta-type aramid (wholly aromatic polyamide) may be a copolymer containing a third component within a range of less than 15 mol%.

[0017] Such meta-type wholly aromatic polyamide fibers can be produced by the conventionally known interfacial polymerization method. As the degree of polymerization of the polymer, those having an intrinsic viscosity (I.V.) measured in an N-methyl-2-pyrrolidone solution with a concentration of 0.5 g / 100 ml in the range of 1.3 to 1.9 dl / g are preferably used. In addition, as the flame retardant to be contained in the meta-type wholly aromatic polyamide fiber, a phosphorus-based flame retardant is preferable.

[0018] In addition, the above-mentioned meta-type wholly aromatic polyamide may contain an alkylbenzene sulfonic acid onium salt. Examples of the alkylbenzene sulfonic acid onium salt preferably include compounds such as tetrabutylphosphonium hexylbenzene sulfonate, tributylbenzylphosphonium hexylbenzene sulfonate, tetraphenylphosphonium dodecylbenzene sulfonate, tributyltetradecylphosphonium dodecylbenzene sulfonate, tetrabutylphosphonium dodecylbenzene sulfonate, tributylbenzylammonium dodecylbenzene sulfonate, etc. Among them, tetrabutylphosphonium dodecylbenzene sulfonate or tributylbenzylammonium dodecylbenzene sulfonate is particularly preferably exemplified because they are easily available, have good thermal stability, and high solubility in N-methyl-2-pyrrolidone.

[0019] The content ratio of the above-mentioned alkylbenzene sulfonic acid onium salt is preferably 2.5 mol% or more (preferably 3.0 to 7.0 mol%) based on the poly-m-phenylene isophthalamide in order to obtain a sufficient effect of improving the dyeability.

[0020] As a method for mixing the poly-m-phenylene isophthalamide and the alkylbenzene sulfonic acid onium salt, a method of mixing and dissolving the poly-m-phenylene isophthalamide in a solvent and then dissolving the alkylbenzene sulfonic acid onium salt in the solvent can be used, and any of them can be used. The dope thus obtained is formed into fibers by a conventionally known method.

[0021] The polymer used for the meta-type wholly aromatic polyamide fiber may contain, in the aromatic polyamide skeleton containing the repeating structural unit represented by the following formula (1), an aromatic diamine component different from the main constituent unit of the repeating structure, or an aromatic dicarboxylic acid halide component, as a third component, copolymerized so as to be 1 to 10 mol% based on the total amount of the repeating structural units of the aromatic polyamide for the purpose of improving the dyeability and the resistance to color change and fading. -(NH-Ar1-NH-CO-Ar1-CO)- ··· Formula (1) Here, Ar1 is a divalent aromatic group having a bonding group other than the meta coordination or the parallel axis direction.

[0022] It is also possible to copolymerize as a third component. Specific examples of the aromatic diamines shown in formulas (2) and (3) include, for example, p-phenylenediamine, chlorophenylene diamine, methylphenylenediamine, acetylphenylenediamine, aminoanisidine, benzidine, bis(aminophenyl) ether, bis(aminophenyl) sulfone, diaminobenzanilide, diaminoazobenzene, and the like. Specific examples of the aromatic dicarboxylic acid dichlorides shown in formulas (4) and (5) include, for example, terephthalic acid chloride, 1,4-naphthalenedicarboxylic acid chloride, 2,6-naphthalenedicarboxylic acid chloride, 4,4'-biphenyldicarboxylic acid chloride, 5-chloroisophthalic acid chloride, 5-methoxyisophthalic acid chloride, bis(chlorocarbonylphenyl) ether, and the like.

[0023] H2N-Ar2-NH2 ··· formula (2) H2N-Ar2-Y-Ar2-NH2 ··· formula (3) XOC-Ar3-COX ··· formula (4) XOC-Ar3-Y-Ar3-COX ··· formula (5) Here, Ar2 is a divalent aromatic group different from Ar1, Ar3 is a divalent aromatic group different from Ar1, Y is at least one atom or functional group selected from the group consisting of an oxygen atom, a sulfur atom, and an alkylene group, and X represents a halogen atom.

[0024] Also, the crystallinity of the meta-type wholly aromatic polyamide fiber is preferably 5 to 35% in terms of good exhaustion of the dye and easy adjustment to the desired color with less dye or under milder dyeing conditions. Furthermore, it is more preferably 15 to 25% in terms of difficulty in surface uneven distribution of the dye, high fastness to change and fading, and ensuring the necessary dimensional stability in practical use.

[0025] Also, the residual solvent amount of the meta-type wholly aromatic polyamide fiber is preferably 0.1% by weight or less in terms of not impairing the excellent flame retardant performance of the meta-type wholly aromatic polyamide fiber and difficulty in surface uneven distribution of the dye and high fastness to change and fading.

[0026] The meta-type wholly aromatic polyamide fiber can be produced by the following method, and in particular, by the method described later, the crystallinity and the residual solvent amount can be within the above ranges. The polymerization method of the meta-type wholly aromatic polyamide polymer is not particularly limited, and for example, the solution polymerization method or the interfacial polymerization method described in Japanese Patent Publication No. 35-14399, U.S. Patent No. 3360595, Japanese Patent Publication No. 47-10863, etc. may be used.

[0027] The spinning solution is not particularly limited, but an amide-based solvent solution containing an aromatic copolyamide polymer and a flame retardant obtained by the above solution polymerization or interfacial polymerization may be used, or the polymer may be isolated from the above polymerization solution and dissolved in an amide-based solvent.

[0028] Examples of the amide-based solvent used here include N,N-dimethylformamide, N,N-dimethylacetamide, N-methyl-2-pyrrolidone, dimethyl sulfoxide, etc., and N,N-dimethylacetamide is particularly preferred.

[0029] The copolymerized aromatic polyamide polymer solution obtained as described above is further stabilized by containing an alkali metal salt or an alkaline earth metal salt, and it is preferable that it can be used at a higher concentration and at a lower temperature. Preferably, the alkali metal salt and the alkaline earth metal salt are 1% by weight or less (more preferably 0.1% by weight or less) based on the total weight of the polymer solution. In the spinning and coagulation step, the spinning solution obtained above (which is a meta-type wholly aromatic polyamide polymer solution containing a flame retardant) is spun into a coagulation liquid and coagulated.

[0030] The spinning device is not particularly limited, and a conventionally well-known wet spinning device can be used. Also, as long as it can stably perform wet spinning, there is no particular need to limit the number of spinning holes, arrangement state, hole shape, etc. of the spinneret. For example, a multi-hole spinneret for staple fibers (short fibers) with 1000 to 30000 holes and a spinning hole diameter of 0.05 to 0.2 mm may be used. Also, the temperature of the spinning solution (meta-type wholly aromatic polyamide polymer solution) when spinning from the spinneret is suitably in the range of 20 to 90°C.

[0031] As the coagulation bath used to obtain the fibers, an aqueous solution containing substantially no inorganic salts and having an amide-based solvent, preferably NMP, with a concentration of 45 to 60% by weight is used in the range of a bath solution temperature of 10 to 50°C. If the concentration of the amide-based solvent (preferably NMP) is less than 45% by weight, the skin will have a thick structure, resulting in a decrease in the washing efficiency in the washing process and difficulty in reducing the residual solvent amount in the fibers. On the other hand, when the concentration of the amide-based solvent (preferably NMP) exceeds 60% by weight, uniform coagulation cannot be achieved up to the inside of the fibers, and thus it may also be difficult to reduce the residual solvent amount in the fibers. The immersion time of the fibers in the coagulation bath is suitably in the range of 0.1 to 30 seconds.

[0032] Subsequently, stretching is performed at a stretching ratio of 3 to 4 times in a plastic stretching bath which is an aqueous solution containing an amide-based solvent, preferably NMP, with a concentration of 45 to 60% by weight and having a bath solution temperature in the range of 10 to 50°C. After stretching, thorough washing is performed through an aqueous solution of NMP with a concentration of 20 to 40% by weight at 10 to 30°C, followed by a warm water bath at 50 to 70°C. By changing this stretching ratio, the elongation at break of the meta-type wholly aromatic polyamide fiber can be changed. The washed fibers are subjected to dry heat treatment at a temperature of 270 to 290°C to obtain meta-type wholly aromatic polyamide fibers satisfying the above ranges of crystallinity and residual solvent amount.

[0033] In the meta-type wholly aromatic polyamide fiber, the fiber form may be long fiber (multifilament) or short fiber. In particular, short fibers with a fiber length of 25 to 200 mm are preferable for blending with other fibers. Also, the single fiber fineness is preferably in the range of 1 to 5 dtex. Examples of commercially available meta-type wholly aromatic polyamide fibers include Conex (registered trademark), Conex (registered trademark) Neo, Nomex (registered trademark), etc.

[0034] It is preferable that the breaking strength of the meta-type wholly aromatic polyamide fiber is in the range of 3.0 to 4.0 cN / dtex (more preferably 3.2 to 3.8 cN / dtex). If the breaking strength is less than 3.0 cN / dtex, the abrasion resistance is not good. The greater the breaking strength, the more preferable the characteristic value for improving abrasion resistance. On the other hand, if the breaking strength exceeds 4.0 cN / dtex, it may be difficult to make the elongation at break 40% or more, and thus the object of the present invention may not be achieved.

[0035] Also, in order to have not only excellent flame retardancy but also excellent abrasion resistance and pill resistance, it is preferable that the breaking strength and elongation at break of the meta-type wholly aromatic polyamide fiber satisfy the following relationship. If Y is less than -20X + 120 ± 10, there is a risk of reduced abrasion resistance. Also, if Y is greater than -20X + 120 ± 10, there is a risk of reduced pilling resistance. Y = -20X + 120 ± 10 (where X: breaking strength, Y: elongation at break) If Y is less than -20X + 110 or greater than -20X + 130, there is a risk that both abrasion resistance and pilling resistance cannot be achieved.

[0036] The flame-retardant fabric of the present invention contains a spun yarn containing the meta-type wholly aromatic polyamide fiber. At that time, it is preferable that the meta-type wholly aromatic polyamide fiber is contained in the spun yarn at 20% by weight or more (more preferably 90% by weight or more) based on the weight of the spun yarn.

[0037] In the present invention, the fabric may be composed only of the meta-type wholly aromatic polyamide fiber. Further, para-type wholly aromatic polyamide fibers, wholly aromatic polyester fibers, polybenzoxazole (PBO) fibers, polybenzimidazole (PBI) fibers, polybenzothiazole (PBTZ) fibers, polyimide (PI) fibers, polysulfonamide (PSA) fibers, polyetheretherketone (PEEK) fibers, polyetherimide (PEI) fibers, polyarylate (PAr) fibers, melamine fibers, phenol fibers, fluorine-based fibers, polyphenylene sulfide (PPS) fibers and other flame-retardant fibers, cellulose fibers (preferably flame-retardant rayon fibers), polyolefin fibers, acrylic fibers, cotton fibers, animal hair fibers, polyurethane fibers, polyvinyl chloride fibers, polyvinylidene chloride fibers, acetate fibers, polycarbonate fibers, conductive fibers, etc. may also be included. Here, it is preferable that these fibers are blended.

[0038] In the present invention, the method for manufacturing the fabric is not particularly limited, and any known method can be used. For example, after obtaining a spun yarn by blending the spun yarns of the above fibers, it is preferable to weave it into a texture such as twill weave or plain weave using a rapier loom or the like with single yarns or double yarns. The fabric thus obtained has not only flame retardancy but also excellent abrasion resistance, and more preferably pilling resistance.

[0039] As such abrasion resistance, in the abrasion test defined in ISO12947-2 (Martindale), it is preferable that the number of times until two yarns constituting the fabric are broken is 20,000 times or more. Further, in the pilling test defined in JIS L 1076, it is preferable that the judgment after 10 hours of the test time is grade 4 or higher. Further, in the combustion test defined in ISO15025 Method B, it is preferable that the char length is 50 mm or less.

[0040] Next, the textile product of the present invention is any textile product selected from the group consisting of protective clothing, fireproof and fire-fighting clothing, fire-fighting activity clothing, rescue clothing, workwear, police uniforms, Self-Defense Force clothing, and military uniforms, which is made using the above-mentioned flame-retardant fabric. Since such a textile product uses the above-mentioned flame-retardant fabric, it is excellent not only in flame retardancy but also in abrasion resistance and, more preferably, in pilling resistance.

Examples

[0041] Next, examples and comparative examples of the present invention will be described in detail, but the present invention is not limited thereto.

[0042] (1) Tensile strength, elongation at break Using a tensile testing machine (manufactured by Instron, model: 5565), measurements were taken under the following conditions based on JIS-L-1015. (Measurement conditions) Grip interval: 20 mm Initial load: 0.044 cN (1 / 20 g / dtex) Tensile speed: 20 mm / min

[0043] (2) Abrasion resistance An abrasion test specified in ISO12947-2 (Martindale) was conducted.

[0044] (3) Pilling property A pilling test specified in JIS L 1076 Method A was carried out.

[0045] (4) Carbonization length A combustion test specified in ISO15025 Method B was conducted. The carbonization length is defined as the distance passing through the center of the carbonized part from the edge of the test piece to the tear end formed in the longitudinal direction of the test piece when exposed to the flame.

[0046] [Example 1] Meta-aramid polymer powder with a weight average molecular weight of 470,000 synthesized by solution polymerization and washed and purified with water, and calcium chloride powder were dissolved in N-methyl-2-pyrrolidone (NMP) to obtain a transparent polymer solution. At this time, the mass concentration of the meta-aramid polymer in the polymer solution was adjusted to 25%, and calcium chloride was adjusted to 2.5%. Tristris(chloropropyl) phosphate was added thereto as a flame retardant so that the phosphorus content was 0.47% by weight based on the polymer component.

[0047] This polymer solution was heated to 80 °C to obtain a spinning dope, and was extruded from a spinneret with a circular discharge hole having a pore diameter of 0.1 mm and 100 holes into a coagulation bath at 80 °C for spinning. The composition of this coagulation bath was 35% by weight of calcium chloride, 3% by weight of NMP, and the remaining 62% by weight of water. After passing through at a yarn speed of 7.5 m / min at an immersion length (effective coagulation bath length) of 120 cm, it was once drawn out into the air.

[0048] This coagulated yarn was washed with water in the first to second water washing baths, and the total immersion time at this time was 250 seconds. The temperatures of the first to second aqueous washing baths were 20 and 30 °C water, respectively. Next, this washed yarn was stretched 2.4 times in boiling water at 90 °C, and then immersed in warm water at 90 °C for 40 seconds and washed.

[0049] Next, it was wound around a roller with a surface temperature of 170 °C for dry heat treatment, and then stretched 1.4 times on a hot plate with a surface temperature of 340 °C to obtain meta-type wholly aromatic polyamide fibers. The obtained fibers had a fineness of 2.3 dtex, a breaking strength of 3.6 cN / dtex, and a breaking elongation of 52.0%. A spun yarn (British count: 36 / 2) was obtained by mixing the above meta-type wholly aromatic polyamide fibers and para-phenylene terephthalamide fibers (Twaron® manufactured by Teijin Limited) at a mixing ratio of 95:5.

[0050] Next, a 2 / 1 twill weave with a fabric density of 100 warp ends per inch (2.54 cm) and 55 weft ends per inch (2.54 cm) was woven, and the areal density was 210 g / m 2A fabric was obtained. The abrasion resistance based on Martindale was 20,000 cycles or more, the pilling property was grade 4, and the char length was 44 mm in the warp direction and 43 mm in the weft direction.

[0051] [Example 2] It was carried out in the same manner as in Example 1 except that it was passed at a yarn speed of 6.3 m / min with an immersion length (effective coagulation bath length) of 120 cm and stretched 1.7 times with a hot plate. The obtained fiber had a fineness of 2.3 dtex, a breaking strength of 4.11 cN / dtex, and an elongation at break of 42.6%. A spun yarn (British count: 36 / 2) was obtained by mixing the above-mentioned meta-type wholly aromatic polyamide fiber and para-phenylene terephthalamide fiber ("Twaron (registered trademark)" manufactured by Teijin Limited) at a mixing ratio of 95:5.

[0052] Next, a 2 / 1 twill weave with a fabric density of 100 ends per inch (2.54 cm) in the warp and 55 picks per inch (2.54 cm) in the weft was woven, and a fabric with a basis weight of 210 g / m 2 was obtained. The abrasion resistance based on Martindale was less than 20,000 cycles, the pilling property was grade 4, and the char length was 46 mm in the warp direction and 42 mm in the weft direction.

[0053] [Comparative Example 1] It was carried out in the same manner as in Example 2 except that it did not contain a flame retardant, and a meta-type wholly aromatic polyamide fiber was obtained. The obtained fiber had a fineness of 2.3 dtex, a breaking strength of 4.62 cN / dtex, and an elongation at break of 43.9%. A spun yarn (British count: 36 / 2) was obtained by mixing the above-mentioned meta-type wholly aromatic polyamide fiber and para-phenylene terephthalamide fiber ("Twaron (registered trademark)" manufactured by Teijin Limited) at a mixing ratio of 95:5.

[0054] Next, a 2 / 1 twill weave with a fabric density of 100 ends per inch (2.54 cm) in the warp and 55 picks per inch (2.54 cm) in the weft was woven, and a fabric with a basis weight of 210 g / m 2 was obtained. The abrasion resistance based on Martindale was 20,000 cycles or more, the pilling property was grade 4, and the char length was 57 mm in the warp direction and 53 mm in the weft direction.

[0055] [Comparative Example 2] Meta-type aramid polymer powder with a weight average molecular weight of 470,000 synthesized by solution polymerization and purified by washing with water and calcium chloride powder were dissolved in N-methyl-2-pyrrolidone (NMP) to obtain a transparent polymer solution. At this time, the mass concentration of the meta-aramid polymer in the polymer solution was adjusted to 25%, and calcium chloride was adjusted to 2.5%. Tris(chloropropyl) phosphate was added thereto as a flame retardant so that the phosphorus content was 0.47% by weight based on the polymer component.

[0056] This polymer solution was heated to 80 °C to obtain a spinning dope, which was extruded from a spinneret with a circular orifice diameter of 0.1 mm and 100 holes into a coagulation bath at 80 °C for spinning. The composition of this coagulation bath was 35% by weight of calcium chloride, 3% by weight of NMP, and the remaining water was 62% by weight. After passing through at a thread speed of 5.5 m / min with an immersion length (effective coagulation bath length) of 120 cm, it was once drawn out into the air.

[0057] This coagulated yarn was washed with water in the first to second water washing baths, and the total immersion time at this time was 250 seconds. The temperatures of the first to second aqueous washing baths were 20 and 30 °C water, respectively. Next, this washed yarn was stretched 2.8 times in boiling water at 90 °C, and then immersed in warm water at 90 °C for 40 seconds for washing.

[0058] Next, it was wound around a roller with a surface temperature of 170 °C for dry heat treatment, and then stretched 1.7 times on a hot plate with a surface temperature of 340 °C to obtain meta-type wholly aromatic polyamide fibers. The obtained fibers had a fineness of 2.3 dtex, a breaking strength of 4.7 cN / dtex, and an elongation at break of 32.3%. A spun yarn (British count: 36 / 2) was obtained by mixing the above-mentioned meta-type wholly aromatic polyamide fibers and para-phenylene terephthalamide fibers (Twaron® manufactured by Teijin Limited) at a mixing ratio of 95:5.

[0059] Next, a 2 / 1 twill weave with a fabric density of 100 warp ends per inch (2.54 cm) and 55 weft ends per inch (2.54 cm) was woven with a basis weight of 210 g / m 2A fabric was obtained. The abrasion resistance based on Martindale was less than 20,000 cycles, the pilling property was grade 4, and the char length was 45 mm in the warp direction and 42 mm in the weft direction.

Industrial Applicability

[0060] According to the present invention, there are provided flame-retardant fabrics and textile products having not only flame retardancy but also abrasion resistance, and more preferably pilling resistance, and their industrial value is extremely high.

Claims

1. A flame-retardant fabric comprising a spun yarn containing a meta-type wholly aromatic polyamide fiber and a para-type wholly aromatic polyamide fiber, wherein the meta-type wholly aromatic polyamide fiber contains a flame retardant, the elongation at break of the meta-type wholly aromatic polyamide fiber is 52.0% or more, in the abrasion test defined in ISO 12947-2 (Martindale), the number of times until two yarns constituting the fabric are broken is 20,000 times or more, the breaking strength of the meta-type wholly aromatic polyamide fiber is in the range of 3.0 to 4.0 cN / dtex, the meta-type wholly aromatic polyamide fiber is contained in the spun yarn at 20% by weight or more based on the spun yarn weight, in the pilling test defined in JIS L1076 A method, the judgment after 10 hours of the test is grade 4 or higher, and in the combustion test defined in ISO 15025 B method, the char length is 50 mm or less. A flame-retardant fabric characterized by the above.

2. Any fiber product selected from the group consisting of protective clothing, fire-fighting and fire-preventing clothing, fire-fighting activity clothing, rescue clothing, workwear, police uniforms, Self-Defense Force clothing, and military uniforms, made using the fabric according to Claim 1.