JP7505946B2 - Heat-resistant protective clothing - Google Patents
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- JP7505946B2 JP7505946B2 JP2020154546A JP2020154546A JP7505946B2 JP 7505946 B2 JP7505946 B2 JP 7505946B2 JP 2020154546 A JP2020154546 A JP 2020154546A JP 2020154546 A JP2020154546 A JP 2020154546A JP 7505946 B2 JP7505946 B2 JP 7505946B2
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- 230000001681 protective effect Effects 0.000 title claims description 41
- 239000010410 layer Substances 0.000 claims description 71
- 239000000835 fiber Substances 0.000 claims description 63
- 239000004744 fabric Substances 0.000 claims description 59
- 229920002577 polybenzoxazole Polymers 0.000 claims description 34
- 239000002344 surface layer Substances 0.000 claims description 28
- 229920006231 aramid fiber Polymers 0.000 claims description 21
- 229920000742 Cotton Polymers 0.000 claims description 17
- 125000003118 aryl group Chemical group 0.000 claims description 16
- 239000004760 aramid Substances 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 9
- 230000014759 maintenance of location Effects 0.000 claims description 6
- 230000004907 flux Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 239000000306 component Substances 0.000 claims description 3
- 239000008358 core component Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 3
- -1 polymetaphenylene isophthalamide Polymers 0.000 description 13
- 239000002759 woven fabric Substances 0.000 description 12
- 229920001494 Technora Polymers 0.000 description 11
- 239000004950 technora Substances 0.000 description 11
- 238000011156 evaluation Methods 0.000 description 9
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 6
- 239000003063 flame retardant Substances 0.000 description 6
- 238000009941 weaving Methods 0.000 description 6
- 230000008642 heat stress Effects 0.000 description 5
- 229920003235 aromatic polyamide Polymers 0.000 description 4
- 239000012210 heat-resistant fiber Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 229920006376 polybenzimidazole fiber Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- YCGKJPVUGMBDDS-UHFFFAOYSA-N 3-(6-azabicyclo[3.1.1]hepta-1(7),2,4-triene-6-carbonyl)benzamide Chemical compound NC(=O)C1=CC=CC(C(=O)N2C=3C=C2C=CC=3)=C1 YCGKJPVUGMBDDS-UHFFFAOYSA-N 0.000 description 1
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229920000544 Gore-Tex Polymers 0.000 description 1
- 206010019345 Heat stroke Diseases 0.000 description 1
- 239000004693 Polybenzimidazole Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229920000561 Twaron Polymers 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
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- 229910052731 fluorine Inorganic materials 0.000 description 1
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- 238000007654 immersion Methods 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
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- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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- 230000009993 protective function Effects 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 230000035900 sweating Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- MHSKRLJMQQNJNC-UHFFFAOYSA-N terephthalamide Chemical compound NC(=O)C1=CC=C(C(N)=O)C=C1 MHSKRLJMQQNJNC-UHFFFAOYSA-N 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000004762 twaron Substances 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Professional, Industrial, Or Sporting Protective Garments (AREA)
- Laminated Bodies (AREA)
- Woven Fabrics (AREA)
Description
本発明は、表地層、中間層、および遮熱層を含み、優れた難燃性、遮熱性、機械的性能、軽量性および着用快適性を兼ね備えた耐熱性防護服に関するものである。 The present invention relates to a heat-resistant protective garment that includes a surface layer, an intermediate layer, and a heat-shielding layer, and that combines excellent flame retardancy, heat-shielding properties, mechanical performance, light weight, and wearing comfort.
従来から、人体保護用の防護服の分野においては、様々なタイプの織物が使用されており、強度、耐熱性等に関する要求特性を満たすことによって、各衣料着用者に対する必要かつ十分な保護を確保している。 Traditionally, various types of textiles have been used in the field of protective clothing for protecting the human body, and by satisfying the required characteristics regarding strength, heat resistance, etc., they ensure necessary and sufficient protection for each wearer.
耐熱性防護服においては、着用者の安全と快適性を確保するため、耐熱性防護服を構成する織物が複数の特性を兼備する必要が非常に重要であることを示唆している。一般に、防護服用織物に求められる特性の組み合わせは、機械的性能（引張強度及び引裂強度）、耐熱性能、難燃性能、化学的安定性能、帯電防止性能等である。 This suggests that in order to ensure the safety and comfort of the wearer, it is extremely important that the fabric that makes up heat-resistant protective clothing must have multiple properties. In general, the combination of properties required for protective clothing fabrics includes mechanical properties (tensile strength and tear strength), heat resistance, flame retardancy, chemical stability, antistatic properties, etc.
例えば、消防士が着用する消防服に使用される難燃性織物では、熱的性質（放射性及び対流性の熱に対する耐性、熱的安定性、難燃性等）だけでなく、機械的性能、防水性、化学的安定性能等も考慮されなければならない。 For example, in the case of flame-retardant fabrics used in firefighting uniforms worn by firefighters, not only thermal properties (resistance to radiative and convective heat, thermal stability, flame retardancy, etc.) must be taken into consideration, as well as mechanical properties, waterproofness, chemical stability, etc.
消防士が着用する消防服を構成する繊維としては、アラミド繊維、ポリフェニレンスルフィド繊維、ポリイミド繊維、ポリベンズイミダゾール繊維などの難燃性の有機繊維からなる布帛に輻射熱を防止する目的から金属アルミニウム等をコーティングあるいは蒸着等により、表面加工したものが多く使用されている。近年、この輻射熱の防止も非常に重要な特性となってきており、消防隊用防護服の最低性能要件を定めた国際基準ＩＳＯ１１９９９－３のレベル１には、耐火炎試験（ＩＳＯ９１５１）、耐輻射熱試験（ＩＳＯ６９４２）の要求性能がそれぞれ１３秒以上と１８秒以上であることと記載されている。 The fibers that make up the firefighting uniforms worn by firefighters are often fabrics made of flame-retardant organic fibers such as aramid fiber, polyphenylene sulfide fiber, polyimide fiber, and polybenzimidazole fiber, which are surface-treated by coating or vapor deposition with metal aluminum or the like to prevent radiant heat. In recent years, preventing radiant heat has become a very important characteristic, and Level 1 of ISO 11999-3, the international standard that sets out the minimum performance requirements for protective clothing for firefighters, states that the required performance for the fire flame resistance test (ISO 9151) and radiant heat resistance test (ISO 6942) is 13 seconds or more and 18 seconds or more, respectively.
また、消防服は耐熱性だけでなく、消火活動等の際の着用者の体温上昇や発汗により、衣服内に熱や湿気がこもり易く、ヒートストレスによる熱射病等を予防することが求められる。近年では、内層にアイスパックを使用したり、縫製にて通気性を確保するという手段が用いられている。中でも、軽量化はヒートストレスを軽減する一手段であり、従来から種々の検討がなされてきた（例えば特許文献１参照）。近年、このヒートストレス低減も非常に重要な特性となってきており、総務省が消防隊用防護服の最低性能要件を定めた「消防隊員用個人防火装備に係るガイドライン」には、ＡＳＴＭ Ｆ １８６８ ＰａｒｔＣで規定する全熱損失ＴＨＬが３００Ｗ／ｍ２以上であることと記載されている。 In addition, firefighting suits are required to be not only heat-resistant, but also to prevent heatstroke and the like caused by heat stress, since heat and moisture are easily trapped inside the suit due to the wearer's body temperature rise and sweating during firefighting activities. In recent years, measures such as using ice packs on the inner layer and ensuring breathability by sewing have been used. Among these, weight reduction is one measure for reducing heat stress, and various studies have been conducted in the past (see, for example, Patent Document 1). In recent years, this reduction in heat stress has also become a very important characteristic, and the "Guidelines for Personal Fire Protection Equipment for Firefighters," which specifies the minimum performance requirements for protective clothing for firefighters by the Ministry of Internal Affairs and Communications, states that the total heat loss THL specified in ASTM F 1868 Part C is 300 W/m 2 or more.
しかしながら、消防服用として現在用いられている布帛は、機械的性能および遮熱性を高めるために、目付の高い織物が使われることが多く、消防服として重量が重くなり、風合いが硬くなり活動にしにくいという問題があった。また、ヒートストレス対策にはまだ改良の余地があった。また、それらの布帛は、消防活動中に火炎や熱に一度でも暴露されると、その暴露を受けた部位が硬化、炭化して脆化してしまい、防護機能を著しく損ねるといった問題を有している。特許文献２および特許文献３では、耐熱性、軽量性、耐候性、および火炎暴露炭化後の布帛柔軟性を兼ね備えた布帛が提案されているが、熱曝露後の強度についてはまだ十分とはいえなかった。 However, the fabrics currently used for firefighting uniforms are often highly dense in order to improve mechanical performance and heat insulation, which makes the firefighting uniforms heavy and stiff, making them difficult to use. There is also room for improvement in heat stress countermeasures. Furthermore, if these fabrics are exposed to flames or heat even once during firefighting activities, the exposed areas harden, carbonize, and become brittle, significantly impairing their protective function. Patent Documents 2 and 3 propose fabrics that combine heat resistance, light weight, weather resistance, and fabric flexibility after flame exposure and carbonization, but the strength after heat exposure is still insufficient.
本発明は上記の背景に鑑みなされたものであり、その目的は、表地層、中間層、および遮熱層を含み、優れた難燃性、遮熱性、機械的性能、軽量性および着用快適性を兼ね備えた耐熱性防護服を提供することにある。 The present invention has been made in consideration of the above background, and its object is to provide a heat-resistant protective garment that includes a surface layer, an intermediate layer, and a heat-shielding layer, and that combines excellent flame retardancy, heat-shielding properties, mechanical performance, light weight, and wearing comfort.
本発明者らは上記の課題を達成するため鋭意検討した結果、布帛を構成する繊維種類などを巧みに工夫することにより所望の耐熱性防護服が得られることを見出し、さらに鋭意検討を重ねることにより本発明を完成するに至った。 As a result of extensive research into achieving the above-mentioned objectives, the inventors discovered that the desired heat-resistant protective clothing could be obtained by skillfully adjusting the type of fibers that make up the fabric, and further extensive research led to the completion of the present invention.
かくして、本発明によれば「表地層、中間層、および遮熱層を含む耐熱性防護服であって、前記表地層が下記（１）～（４）の要件を同時に満たすことを特徴とする耐熱性防護服。」が提供される。
（１）芳香族アラミド繊維とポリベンズオキサゾール繊維とを含む。
（２）目付けが１５０～２１５ｇ／ｍ２である。
（３）ＩＳＯ１３９３４－１で規定する引張強さが２０００Ｎ以上である。
（４）ＩＳＯ１７４９２で規定される試験装置を用いて熱流束８４ｋＷ／ｍ２の火炎で１０秒間曝露した後の引張強さ保持率が１０％以上である。
Thus, according to the present invention, there is provided "a heat-resistant protective suit comprising a surface layer, an intermediate layer, and a heat shielding layer, wherein the surface layer simultaneously satisfies the following requirements (1) to (4)."
(1) Contains aromatic aramid fibers and polybenzoxazole fibers.
(2) The basis weight is 150 to 215 g/ m2 .
(3) The tensile strength specified in ISO 13934-1 is 2000 N or more.
(4) The tensile strength retention rate after exposure to a flame with a heat flux of 84 kW/ m2 for 10 seconds using a test device specified in ISO 17492 is 10% or more.
その際、前記表地層において、芳香族アラミド繊維とポリベンズオキサゾール繊維の混合比率が、６０：４０～９０：１０であることが好ましい。また、前記表地層に、ポリベンズオキサゾール繊維からなる牽切紡績糸が含まれることが好ましい。その際、前記牽切紡績糸において、英式綿番手３０～８０の範囲内であることが好ましい。また、前記表地層に、芯成分が牽切紡績されたポリベンズオキサゾール繊維であり、鞘成分が芳香族アラミド繊維である多層構造紡績糸が含まれることが好ましい。その際、前記多層構造紡績糸において、英式綿番手１０～２０の範囲内であることが好ましい。また、前記表地層が、織物の表面を構成する基布部と、該織物の裏面を構成し該織物全体を補強する補強布部とからなり、かつこれらが一体構造を形成している二層構造織物であることが好ましい。 In this case, it is preferable that the mixture ratio of aromatic aramid fiber and polybenzoxazole fiber in the surface layer is 60:40 to 90:10. It is also preferable that the surface layer contains stretch-break spun yarn made of polybenzoxazole fiber. In this case, it is preferable that the stretch-break spun yarn has a British cotton count in the range of 30 to 80. It is also preferable that the surface layer contains multi-layered spun yarn whose core component is stretch-break spun polybenzoxazole fiber and whose sheath component is aromatic aramid fiber. In this case, it is preferable that the multi-layered spun yarn has a British cotton count in the range of 10 to 20. It is also preferable that the surface layer is a two-layered woven fabric consisting of a base fabric part that constitutes the surface of the woven fabric and a reinforcing fabric part that constitutes the back surface of the woven fabric and reinforces the entire woven fabric, and these form an integral structure.
本発明の耐熱性防護服において、前記中間層が、芳香族アラミド繊維からなる布帛に透湿防水層を積層してなることが好ましい。また、前記遮熱層が、芳香族アラミド繊維からなる布帛であり、目付けが１８０ｇ／ｍ２以下であることが好ましい。また、防護服を構成する表地層、中間層、および遮熱層の合計の目付けが、３８０～５００ｇ／ｍ２であることが好ましい。また、防護服において、ＩＳＯ６９４２で規定する耐輻射熱試験においてセンサー温度が２４℃上昇するまでの時間ＲＨＴＩ２４が１８秒以上、かつＡＳＴＭ Ｆ １８６８ ＰａｒｔＣで規定する全熱損失ＴＨＬが３００Ｗ／ｍ２以上であることが好ましい。 In the heat-resistant protective clothing of the present invention, the intermediate layer is preferably formed by laminating a moisture-permeable waterproof layer onto a fabric made of aromatic aramid fiber. The heat-shielding layer is preferably a fabric made of aromatic aramid fiber and has a basis weight of 180 g/ m2 or less. The total basis weight of the outer layer, intermediate layer, and heat-shielding layer constituting the protective clothing is preferably 380 to 500 g/ m2 . In addition, in the protective clothing, it is preferable that the time RHTI24 until the sensor temperature rises by 24°C in the radiant heat resistance test specified in ISO6942 is 18 seconds or more, and the total heat loss THL specified in ASTM F 1868 Part C is 300 W/ m2 or more.
本発明によれば、表地層、中間層、および遮熱層を含み、優れた難燃性、遮熱性、機械的性能、軽量性および着用快適性を兼ね備えた耐熱性防護服が得られる。 According to the present invention, a heat-resistant protective garment is obtained that includes a surface layer, an intermediate layer, and a heat-shielding layer, and that combines excellent flame retardancy, heat-shielding properties, mechanical performance, light weight, and wearing comfort.
以下、本発明の実施の形態について詳細に説明する。まず、本発明の耐熱性防護服は、表地層、中間層、および遮熱層の３層を外気側からこの順序に含む。 The following is a detailed description of an embodiment of the present invention. First, the heat-resistant protective clothing of the present invention includes three layers, an outer layer, an intermediate layer, and a heat-shielding layer, in that order from the outside air side.
まず表地層について説明する。表地層は、下記（１）～（４）の要件を同時に満たす。（１）芳香族アラミド繊維とポリベンズオキサゾール繊維とを含む。
（２）目付けが１５０～２１５ｇ／ｍ２である。
（３）ＩＳＯ１３９３４－１で規定する引張強さが２０００Ｎ以上である。
（４）ＩＳＯ１７４９２で規定される試験装置を用いて熱流束８４ｋＷ／ｍ２の火炎で１０秒間曝露した後の引張強さ保持率が１０％以上である。
First, the surface layer will be described. The surface layer simultaneously satisfies the following requirements (1) to (4): (1) It contains aromatic aramid fibers and polybenzoxazole fibers.
(2) The basis weight is 150 to 215 g/ m2 .
(3) The tensile strength specified in ISO 13934-1 is 2000 N or more.
(4) The tensile strength retention rate after exposure to a flame with a heat flux of 84 kW/ m2 for 10 seconds using a test device specified in ISO 17492 is 10% or more.
ここで、前記芳香族アラミド繊維としては、メタ系アラミド繊維やパラ系アラミド繊維を挙げることができる。その際、メタ系アラミド繊維は、その繰返し単位の８５モル％以上がｍ－フェニレンイソフタルアミドであるポリマーからなる繊維である。市販品では「コーネックス」（商標名）などが例示される。パラ系アラミド繊維、パラフェニレンテレフタラミド繊維またはコパラフェニレン・３、４’オキシジフェニレンテレフタルアミド繊維が好ましく、市販品では「トワロン」（商標名）、「テクノーラ」（商標名）などが例示される。また、ポリベンズオキサゾール繊維は、市販品では「ザイロン」（商標名）などが例示される。 Here, examples of the aromatic aramid fiber include meta-aramid fiber and para-aramid fiber. In this case, meta-aramid fiber is a fiber made of a polymer in which 85 mol% or more of the repeating units are m-phenylene isophthalamide. An example of a commercially available product is "Conex" (trade name). Para-aramid fiber, paraphenylene terephthalamide fiber, or coparaphenylene-3,4'-oxydiphenylene terephthalamide fiber is preferred, and examples of commercially available products include "Twaron" (trade name) and "Technora" (trade name). Also, an example of a commercially available polybenzoxazole fiber is "Zylon" (trade name).
前記表地層は、芳香族アラミド繊維とポリベンズオキサゾール繊維のみで構成されていてもよいし他の繊維を含んでいてもよい。その際、他の繊維としては、ポリベンズイミダゾール繊維、酸化ポリアクリロニトリル繊維、難燃アクリル繊維、難燃レーヨン繊維、難燃ポリエステル繊維などがあげられる。 The surface layer may be composed of only aromatic aramid fibers and polybenzoxazole fibers, or may contain other fibers. In this case, the other fibers may include polybenzimidazole fibers, oxidized polyacrylonitrile fibers, flame-retardant acrylic fibers, flame-retardant rayon fibers, flame-retardant polyester fibers, etc.
ここで、前記表地層において、芳香族アラミド繊維とポリベンズオキサゾール繊維の混合比率が、６０：４０～９０：１０であることが好ましい。
前記芳香族アラミド繊維とポリベンズオキサゾール繊維とは、フィラメント、混繊糸、紡績糸等の形で使用できるが、混紡して紡績糸の形態で使用するものが好ましい。
In the surface layer, the blend ratio of the aromatic aramid fiber and the polybenzoxazole fiber is preferably 60:40 to 90:10.
The aromatic aramid fiber and the polybenzoxazole fiber can be used in the form of filaments, mixed yarns, spun yarns, etc., but it is preferable to use the mixed aramid fiber and the polybenzoxazole fiber in the form of spun yarns.
例えば、前記表地層に、ポリベンズオキサゾール繊維からなる牽切紡績糸が含まれることが好ましい。その際、前記牽切紡績糸において、英式綿番手３０～８０の範囲内であることが好ましい。また、前記表地層に、芯成分が牽切紡績されたポリベンズオキサゾール繊維であり、鞘成分が芳香族アラミド繊維である多層構造紡績糸が含まれることが好ましい。その際、前記多層構造紡績糸において、英式綿番手１０～２０の範囲内であることが好ましい。 For example, the surface layer preferably contains stretch-break spun yarn made of polybenzoxazole fiber. In this case, the stretch-break spun yarn preferably has a British cotton count in the range of 30 to 80. Also, the surface layer preferably contains multi-layered spun yarn in which the core component is stretch-break spun polybenzoxazole fiber and the sheath component is aromatic aramid fiber. In this case, the multi-layered spun yarn preferably has a British cotton count in the range of 10 to 20.
前記表地層は、単層でもよいし多層でもよい。また、編物でもよいが織物が好ましい。特に、前記表地層が、織物の表面を構成する基布部と、該織物の裏面を構成し該織物全体を補強する補強布部とからなり、かつこれらが一体構造を形成している二層構造織物であることが好ましい。 The surface layer may be a single layer or multiple layers. It may be a knitted fabric, but a woven fabric is preferred. In particular, it is preferred that the surface layer is a two-layered fabric consisting of a base fabric portion that forms the surface of the fabric and a reinforcing fabric portion that forms the back surface of the fabric and reinforces the entire fabric, and that these form an integral structure.
該表地層に対しては、コーティング法、スプレー法、または、浸漬法などの加工法により、フッ素系の撥水樹脂を付与して加工することが、より高い耐水性能や耐薬品性能を有する防護服を得るためには好ましい。 To obtain protective clothing with higher water resistance and chemical resistance, it is preferable to apply a fluorine-based water-repellent resin to the outer layer by a processing method such as coating, spraying, or immersion.
本発明において中間層は、透湿防水性を有するものであることが好ましく、メタ系および／またはパラ系アラミド繊維からなる織物に透湿防水性の薄膜フィルムを積層したものが最も好ましく用いられる。特に、最適な中間層として、難燃性素材であるポリメタフェニレンイソフタルアミド等のメタ系アラミド繊維からなる織布を用い、該織布に透湿防水性のあるポリテトラフルオロエチレン等からなる薄膜フィルムをラミネート加工したもの
が例示される。
In the present invention, the intermediate layer is preferably moisture-permeable and waterproof, and is most preferably a layer made of a woven fabric made of meta- and/or para-aramid fibers laminated with a moisture-permeable and waterproof thin film. In particular, an example of an optimal intermediate layer is a layer made of a woven fabric made of meta-aramid fibers such as polymetaphenylene isophthalamide, which is a flame-retardant material, laminated with a moisture-permeable and waterproof thin film made of polytetrafluoroethylene or the like.
このような中間層の挿入により、透湿防水性や耐薬品性が向上し、着用者の汗の蒸散を促進するので、着用者のヒートストレスを減少することができる。
該布帛を構成する繊維は紡績糸、フィラメントであってもよく、形態としては織物、ニット、または不織布であってもよい。
The insertion of such an intermediate layer improves moisture permeability, waterproofness and chemical resistance and promotes the evaporation of sweat from the wearer, thereby reducing heat stress on the wearer.
The fibers constituting the fabric may be spun yarn or filament, and may be in the form of woven, knitted, or nonwoven fabric.
本発明において遮熱層はメタ系および／またはパラ系アラミド繊維からなる、織物、不織布、またはニットであることが好ましく、特に織物が好ましい。また、ポリエステル繊維など他の繊維と混用してもよい。
かかる遮熱層において、目付けは軽量性の点で目付けが１８０ｇ／ｍ２以下（好ましくは５０～１８０ｇ／ｍ２）であることが好ましい。
In the present invention, the heat shield layer is preferably a woven fabric, nonwoven fabric or knitted fabric made of meta- and/or para-aramid fibers, and more preferably a woven fabric, which may be mixed with other fibers such as polyester fibers.
In such a heat shield layer, the basis weight is preferably 180 g/m 2 or less (preferably 50 to 180 g/m 2 ) in terms of light weight.
本発明は、前記の表地層、中間層、および遮熱層を外気側からこの順に積層してなる。その際、前記の表地層、中間層、および遮熱層の合計の目付けが、３８０～５００ｇ／ｍ２であることが好ましい。 The present invention is formed by laminating the surface layer, intermediate layer, and heat shielding layer in this order from the outside air side. In this case, it is preferable that the total basis weight of the surface layer, intermediate layer, and heat shielding layer is 380 to 500 g/ m2 .
本発明の耐熱性防護服は前記の構成を有するので、優れた難燃性、遮熱性、機械的性能、軽量性および着用快適性を有する。ここで、防護服において、ＩＳＯ６９４２で規定する耐輻射熱試験においてセンサー温度が２４℃上昇するまでの時間ＲＨＴＩ２４が１８秒以上（より好ましくは１８～５０秒）であることが好ましい。また、ＡＳＴＭ Ｆ １８６８ ＰａｒｔＣで規定する全熱損失ＴＨＬが３００Ｗ／ｍ２以上（より好ましくは３００～８００Ｗ／ｍ２）であることが好ましい。
本発明の耐熱性防護服は消防服、防火服、作業服などとして好適に使用される。
The heat-resistant protective clothing of the present invention has the above-mentioned configuration, and therefore has excellent flame retardancy, heat shielding properties, mechanical properties, light weight, and wearing comfort. Here, in the protective clothing, it is preferable that the time RHTI24 required for the sensor temperature to rise by 24°C in the radiant heat resistance test specified in ISO6942 is 18 seconds or more (more preferably 18 to 50 seconds). In addition, it is preferable that the total heat loss THL specified in ASTM F 1868 Part C is 300 W/ m2 or more (more preferably 300 to 800 W/ m2 ).
The heat-resistant protective clothing of the present invention is suitably used as firefighting clothing, fire prevention clothing, work clothing, and the like.
次に本発明の実施例及び比較例を詳述するが、本発明はこれらによって限定されるものではない。なお、実施例中の各測定項目は下記の方法で測定した。
（１）織物の目付け
ＪＩＳ Ｌ１０９６ ６．４．２に従って測定した。
（２）織物の引張強さ
ＩＳＯ１３９３４－１に従って測定した。
（３）熱暴露後の引張強さおよび保持率
ＩＳＯ１７４９２で規定される試験装置を用いて熱流束８４ｋＷ／ｍ２の火炎で１０秒間暴露した後、ＩＳＯ１３９３４－１に規定される引張試験を行った。引張強さ保持率は次の関係式により求めた。
引張強さ保持率（％）＝熱暴露後の引張強さ÷初期引張強さ×１００
（４）遮熱性（耐輻射熱）
ＩＳＯ６９４２に基づき熱流束４０ｋＷ／ｍ２において、輻射熱暴露開始から銅製のセンサーが２４℃上昇するまでの時間ＲＨＴＩ２４を求めた。
（５）全熱損失（ＴＨＬ）
ＡＳＴＭ Ｆ １８６８ ＰａｒｔＣに準拠し、全熱損失ＴＨＬを求めた。
Examples and Comparative Examples of the present invention will now be described in detail, but the present invention is not limited thereto. The measurement items in the examples were measured by the following methods.
(1) Fabric Weight: Measured in accordance with JIS L1096 6.4.2.
(2) Tensile strength of fabric: Measured in accordance with ISO 13934-1.
(3) Tensile strength and retention rate after heat exposure Using a test device specified in ISO 17492, the specimen was exposed to a flame with a heat flux of 84 kW/ m2 for 10 seconds, and then subjected to a tensile test specified in ISO 13934-1. The tensile strength retention rate was calculated using the following relational formula.
Tensile strength retention (%) = tensile strength after heat exposure ÷ initial tensile strength × 100
(4) Heat shielding properties (resistance to radiant heat)
Based on ISO 6942, the time required for the temperature of the copper sensor to rise by 24°C from the start of exposure to radiant heat at a heat flux of 40 kW/ m2 was determined as RHTI24.
(5) Total Heat Loss (THL)
The total heat loss (THL) was determined in accordance with ASTM F 1868 Part C.
［実施例１］
ポリメタフェニレンイソフタルアミド繊維（帝人社製「コーネックス」（商標名））とコパラフェニレン・３、４’オキシジフェニレンテレフタルアミド繊維（帝人社製、「テクノーラ」（商標名））とポリベンズオキサゾール繊維（東洋紡社製「ザイロン」（商標名））を混合比率が４０：４５：１５となる割合で混合した紡績糸（英式綿番手３０ｓ／２（双糸））を用意した（糸１）。また、コパラフェニレン・３、４’オキシジフェニレンテレフタルアミド繊維（帝人社製、「テクノーラ」（商標名））とポリベンズオキサゾ
ール繊維（東洋紡社製「ザイロン」（商標名））を混合比率が６５：３５となる割合で混合した紡績糸（英式綿番手３０ｓ／２（双糸））を用意した（糸２）。
[Example 1]
A spun yarn (English cotton count 30s/2 (two-ply)) was prepared by mixing polymetaphenylene isophthalamide fiber (Teijin Limited, trademark "Conex"), coparaphenylene-3,4'-oxydiphenylene terephthalamide fiber (Teijin Limited, trademark "Technora"), and polybenzoxazole fiber (Toyobo Limited, trademark "Zylon") in a ratio of 40:45:15 (Yarn 1). Also, a spun yarn (English cotton count 30s/2 (two-ply)) was prepared by mixing coparaphenylene-3,4'-oxydiphenylene terephthalamide fiber (Teijin Limited, trademark "Technora"), and polybenzoxazole fiber (Toyobo Limited, trademark "Zylon") in a ratio of 65:35 (Yarn 2).
次いで、経糸は糸１：糸２を３：１、緯糸は糸１：糸２を２：１の割合で配して、織物密度が経７４本／インチ（２．５４ｃｍ）、緯５１本／インチ（２．５４ｃｍ）の図１の部分二重織物を製織し、目付２０５ｇ／ｍ２の二層構造織物を得た。得られた二層構造織物について、評価結果を表１に示す。 Next, the warp yarns were arranged in a ratio of 3:1 (Yarn 1:Yarn 2) and the weft yarns were arranged in a ratio of 2:1 (Yarn 1:Yarn 2) to weave a partial double-layered fabric as shown in FIG. 1 with a fabric density of 74 warp yarns/inch (2.54 cm) and 51 weft yarns/inch (2.54 cm), to obtain a two-layered fabric with a basis weight of 205 g/m 2. The evaluation results of the obtained two-layered fabric are shown in Table 1.
得られた二層構造織物を表地層として使用し、その下に、中間層として、ポリメタフェニレンイソフタルアミド繊維（帝人社製「コーネックス」（商標名））とコパラフェニレン・３、４’オキシジフェニレンテレフタルアミド繊維（帝人社製「テクノーラ」（商標名））とを混合比率が９５：５となる割合で混合した耐熱繊維からなる紡績糸（英式綿番手４０ｓ）を用いて平織に織成した織布（目付：８０ｇ／ｍ２）にポリテトラフルオロエチレン製の透湿防水性フィルム（日本ゴアテックス社製）をラミネートしたもの（目付：１０５ｇ／ｍ２）を配し、さらにその下に、遮熱層として、ポリメタフェニレンイソフタルアミド繊維（帝人社製「コーネックス」（商標名））とコパラフェニレン・３、４’オキシジフェニレンテレフタルアミド繊維（帝人社製「テクノーラ」（商標名））とを混合比率が９５：５となる割合で混合した耐熱繊維からなる紡績糸（英式綿番手４０ｓ）からなる織布において緯糸の一部にコパラフェニレン・３、４’オキシジフェニレンテレフタルアミド繊維（帝人社製「テクノーラ」（商標名））からなる紡績糸（英式綿番手：５ｓの５本撚糸）を１ｃｍの間隔で織り込んだ織物（目付：１７０ｇ／ｍ２）を配置した。
上記の表地層、中間層および遮熱層を重ね合わせて縫製し、目付４８０ｇ／ｍ２の耐熱性防護服用布帛を得た。得られた耐熱性防護服用布帛について、評価結果を表２に示す。
The obtained two-layered fabric was used as the outer layer, and underneath it, as the middle layer, a plain weave fabric (basis weight: 80 g/m 2 ) was woven using spun yarn (British cotton count 40s) made of heat-resistant fibers, a mixture of polymetaphenylene isophthalamide fiber (Teijin Limited's "Conex" trademark) and coparaphenylene-3,4'-oxydiphenylene terephthalamide fiber (Teijin Limited's "Technora" trademark) in a mixing ratio of 95:5, on which a moisture-permeable and waterproof polytetrafluoroethylene film (Japan Gore-Tex Co., Ltd.) was laminated (basis weight: 105 g/m 2 ). ) was placed underneath, and underneath that, a heat-shielding layer was placed, in which a woven fabric (basis weight: 170 g/m2) was placed in which spun yarn (British cotton count 40s) made of heat-resistant fiber consisting of polymetaphenylene isophthalamide fiber (Teijin Limited's "Conex " trademark) and coparaphenylene-3,4'-oxydiphenylene terephthalamide fiber (Teijin Limited's "Technora" trademark) in a mixing ratio of 95:5 was used as a heat-resistant fiber.
The above-mentioned outer layer, intermediate layer and heat shielding layer were overlapped and sewn together to obtain a heat-resistant protective suit fabric having a basis weight of 480 g/m 2. The evaluation results of the obtained heat-resistant protective suit fabric are shown in Table 2.
［実施例２］
ポリメタフェニレンイソフタルアミド繊維（帝人社製「コーネックス」（商標名））とコパラフェニレン・３、４’オキシジフェニレンテレフタルアミド繊維（帝人社製、「テクノーラ」（商標名））とポリベンズオキサゾール繊維（東洋紡社製「ザイロン」（商標名）））を混合比率が４０：４５：１５となる割合で混合した紡績糸（番手：３０ｓ／２（双糸））を用意した（糸１）。また、繊度１６７０ｄｔｅｘ／９９６フィラメントのポリベンズオキサゾール繊維マルチフィラメント（東洋紡社製「ザイロン」（商標名））を８本引き揃え、牽切、精紡工程を経て、英式綿番手３０ｓの牽切紡糸を得た（糸２）。
[Example 2]
A spun yarn (count: 30s/2 (two-ply yarn)) was prepared by mixing polymetaphenylene isophthalamide fiber (Teijin Limited, trademark "Conex"), coparaphenylene-3,4'-oxydiphenylene terephthalamide fiber (Teijin Limited, trademark "Technora"), and polybenzoxazole fiber (Toyobo Limited, trademark "Zylon") in a mixing ratio of 40:45:15 (Yarn 1). In addition, eight polybenzoxazole fiber multifilaments (Toyobo Limited, trademark "Zylon") having a fineness of 1670 dtex/996 filaments were aligned, stretch-broken, and spun to obtain a stretch-broken spun yarn having a British cotton count of 30s (Yarn 2).
次いで、糸１および糸２を実施例１と同様に配置し、同じ織物密度、同じ織物組織で、目付１７５ｇ／ｍ２の二層構造織物を得た。得られた二層構造織物について、評価結果を表１に併せて示す。
得られた二層構造織物を表地層として、中間層及び遮熱層にはそれぞれ実施例１と同様の物を使用し、実施例１と同様に重ね合わせて縫製し、目付４５０ｇ／ｍ２の耐熱性防護服用布帛を得た。得られた耐熱性防護服用布帛の評価結果を表２に併せて示す。
Next, yarn 1 and yarn 2 were arranged in the same manner as in Example 1 to obtain a two-layer structure fabric having the same weaving density, the same weaving structure, and a basis weight of 175 g/ m2 . The evaluation results of the obtained two-layer structure fabric are also shown in Table 1.
The obtained two-layer structure fabric was used as the surface layer, and the same materials as in Example 1 were used for the intermediate layer and the heat shielding layer, which were overlapped and sewn in the same manner as in Example 1 to obtain a heat-resistant protective suit fabric with a basis weight of 450 g/ m2 . The evaluation results of the obtained heat-resistant protective suit fabric are also shown in Table 2.
［実施例３］
表地層および中間層は実施例１と同様に得た。遮熱層として、ポリメタフェニレンイソフタルアミド繊維（帝人社製「コーネックス」（商標名））とコパラフェニレン・３、４’オキシジフェニレンテレフタルアミド繊維（帝人社製「テクノーラ」（商標名））とを混合比率が９５：５となる割合で混合した耐熱繊維からなる紡績糸（英式綿番手４０ｓ）を用いて蜂巣組織に製織した織物（目付：１５０ｇ／ｍ２）を得た。
上記の表地層、中間層および遮熱層を重ね合わせて縫製し、目付４６０ｇ／ｍ２の耐熱性防護服用布帛を得た。得られた耐熱性防護服用布帛の評価結果を表２に併せて示す。
[Example 3]
The surface layer and the intermediate layer were obtained in the same manner as in Example 1. As the heat shield layer, a spun yarn (British cotton count 40s) made of heat-resistant fibers consisting of polymetaphenylene isophthalamide fiber (Teijin Limited's "Conex" trademark) and coparaphenylene-3,4'-oxydiphenylene terephthalamide fiber (Teijin Limited's "Technora" trademark) in a mixing ratio of 95:5 was used to obtain a honeycomb structure woven fabric (basis weight: 150 g/ m2 ) for the heat shield layer.
The above-mentioned outer layer, intermediate layer and heat shielding layer were overlapped and sewn together to obtain a heat-resistant protective suit fabric having a basis weight of 460 g/m 2. The evaluation results of the obtained heat-resistant protective suit fabric are also shown in Table 2.
［実施例４］
ポリメタフェニレンイソフタルアミド繊維（帝人社製「コーネックス」（商標名））とコパラフェニレン・３、４’オキシジフェニレンテレフタルアミド繊維（帝人社製、「テクノーラ」（商標名））とポリベンズオキサゾール繊維（東洋紡社製「ザイロン」（商標名）））を混合比率が４０：４５：１５となる割合で混合した紡績糸（番手：３０ｓ／２（双糸））を用意した（糸１）。また、繊度５５５ｄｔｅｘ／３３２フィラメントのポリベンズオキサゾール繊維マルチフィラメント（東洋紡社製「ザイロン」（商標名））を８本引き揃え、牽切、精紡工程を経て、英式綿番手８０ｓの牽切紡糸を得た。次いで、得られたポリベンズオキサゾール繊維牽切紡糸を芯糸とし、実質無撚のポリメタフェニレンイソフタルアミド繊維（帝人社製「コーネックス」（商標名））束をその周辺に実質的に無撚りの状態で配置させ、さらにポリメタフェニレンイソフタルアミド繊維（帝人社製「コーネックス」（商標名））からなる英式綿番手５０ｓの紡績糸をＳ撚でラップさせて、トータル英式綿番手１５ｓの多層構造紡績糸を得た（糸２）。
[Example 4]
A spun yarn (count: 30s/2 (two-ply yarn)) was prepared by mixing polymetaphenylene isophthalamide fiber (Teijin Limited, "Conex" (trade name)), coparaphenylene-3,4'-oxydiphenylene terephthalamide fiber (Teijin Limited, "Technora" (trade name)), and polybenzoxazole fiber (Toyobo Limited, "Zylon" (trade name)) in a mixing ratio of 40:45:15 (Yarn 1). In addition, eight polybenzoxazole fiber multifilaments (Toyobo Limited, "Zylon" (trade name)) with a fineness of 555 dtex/332 filaments were aligned, stretch-broken, and spun to obtain a stretch-broken spun yarn with a British cotton count of 80s. Next, the obtained stretch-cut spun yarn of polybenzoxazole fiber was used as a core yarn, and a bundle of substantially untwisted polymetaphenylene isophthalamide fiber (Teijin Limited, trademark "Conex") was arranged around it in a substantially untwisted state. Further, a spun yarn of polymetaphenylene isophthalamide fiber (Teijin Limited, trademark "Conex") having a British cotton count of 50s was wrapped with an S-twist to obtain a multilayered spun yarn having a total British cotton count of 15s (yarn 2).
次いで、糸１および糸２を実施例１と同様に配置し、同じ織物密度、同じ織物組織で、目付２１０ｇ／ｍ２の二層構造織物を得た。得られた二層構造織物について、評価結果を表１に併せて示す。
得られた二層構造織物を表地層として、中間層及び遮熱層にはそれぞれ実施例１と同様の物を使用し、実施例１と同様に重ね合わせて縫製し、目付４８５ｇ／ｍ２の耐熱性防護服用布帛を得た。得られた耐熱性防護服用布帛の評価結果を表２に併せて示す。
Next, yarn 1 and yarn 2 were arranged in the same manner as in Example 1 to obtain a two-layer structure fabric having the same weaving density, the same weaving structure, and a basis weight of 210 g/ m2 . The evaluation results of the obtained two-layer structure fabric are also shown in Table 1.
The obtained two-layer structure fabric was used as the surface layer, and the same materials as in Example 1 were used for the intermediate layer and the heat shielding layer, which were overlapped and sewn in the same manner as in Example 1 to obtain a heat-resistant protective suit fabric with a basis weight of 485 g/ m2 . The evaluation results of the obtained heat-resistant protective suit fabric are also shown in Table 2.
［実施例５］
ポリメタフェニレンイソフタルアミド繊維（帝人社製「コーネックス」（商標名））とコパラフェニレン・３、４’オキシジフェニレンテレフタルアミド繊維（帝人社製、「テクノーラ」（商標名））とポリベンズオキサゾール繊維（東洋紡社製「ザイロン」（商標名）））を混合比率が４０：４５：１５となる割合で混合した紡績糸（番手：３０ｓ／２（双糸））を用意した（糸１）。また、繊度２７８ｄｔｅｘ／１６６フィラメントのポリベンズオキサゾール繊維マルチフィラメント（東洋紡社製「ザイロン」（商標名））を用意した（糸２）。
[Example 5]
A spun yarn (count: 30s/2 (two-ply yarn)) was prepared by mixing polymetaphenylene isophthalamide fiber (Teijin Limited, trademark "Conex"), coparaphenylene-3,4'-oxydiphenylene terephthalamide fiber (Teijin Limited, trademark "Technora"), and polybenzoxazole fiber (Toyobo Limited, trademark "Zylon") in a mixing ratio of 40:45:15 (Yarn 1). In addition, a polybenzoxazole fiber multifilament (Toyobo Limited, trademark "Zylon") with a fineness of 278 dtex/166 filaments was prepared (Yarn 2).
次いで、糸１および糸２を実施例１と同様に配置し、同じ織物密度、同じ織物組織で、目付１９２ｇ／ｍ２の二層構造織物を得た。得られた二層構造織物について、評価結果を表１に併せて示す。
得られた二層構造織物を表地層として、中間層及び遮熱層にはそれぞれ実施例１と同様の物を使用し、実施例１と同様に重ね合わせて縫製し、目付４６７ｇ／ｍ２の耐熱性防護服用布帛を得た。得られた耐熱性防護服用布帛の評価結果を表２に併せて示す。
Next, yarn 1 and yarn 2 were arranged in the same manner as in Example 1 to obtain a two-layer structure fabric having the same weaving density, the same weaving structure, and a basis weight of 192 g/ m2 . The evaluation results of the obtained two-layer structure fabric are also shown in Table 1.
The obtained two-layer structure fabric was used as the surface layer, and the same materials as in Example 1 were used for the intermediate layer and the heat shielding layer, which were overlapped and sewn in the same manner as in Example 1 to obtain a heat-resistant protective suit fabric with a basis weight of 467 g/ m2 . The evaluation results of the obtained heat-resistant protective suit fabric are also shown in Table 2.
［比較例１］
実施例１において、ポリメタフェニレンイソフタルアミド繊維（帝人社製「コーネックス」（商標名））とコパラフェニレン・３、４’オキシジフェニレンテレフタルアミド繊維（帝人社製、商標名：テクノーラ）を混合比率が９０：１０となる割合で混合した紡績糸（英式綿番手：３０ｓ／２（双糸））を糸１として用い、また、コパラフェニレン・３、４’オキシジフェニレンテレフタルアミド繊維（帝人社製、「テクノーラ」（商標名））からなる紡績糸（英式綿番手３０ｓ／２（双糸））を糸２として用いる以外は実施例１と同様に実施した。
[Comparative Example 1]
Example 1 was carried out in the same manner as in Example 1, except that a spun yarn (British cotton count: 30s/2 (two-ply yarn)) made of a mixture of polymetaphenylene isophthalamide fiber (manufactured by Teijin Limited, trademark name "Conex") and coparaphenylene-3,4'-oxydiphenylene terephthalamide fiber (manufactured by Teijin Limited, trademark name: Technora) in a mixing ratio of 90:10 was used as yarn 1, and a spun yarn (British cotton count: 30s/2 (two-ply yarn)) made of coparaphenylene-3,4'-oxydiphenylene terephthalamide fiber (manufactured by Teijin Limited, trademark name "Technora") was used as yarn 2.
［比較例２］
実施例１において、織物密度を経８５本／インチ（２．５４ｃｍ）、緯５８本／インチ（２．５４ｃｍ）とし、目付２３５ｇ／ｍ２の二層構造織物を得た以外は実施例１と同様に実施した。
[Comparative Example 2]
The same procedure as in Example 1 was repeated, except that a two-layered woven fabric was obtained with a warp density of 85 threads/inch (2.54 cm) and a weft density of 58 threads/inch (2.54 cm) and a basis weight of 235 g/ m2 .
本発明によれば、表地層、中間層、および遮熱層を含み、優れた難燃性、遮熱性、機械的性能、軽量性および着用快適性を兼ね備えた耐熱性防護服が提供され、その工業的価値は極めて大である。 The present invention provides heat-resistant protective clothing that includes a surface layer, an intermediate layer, and a heat-shielding layer, and that combines excellent flame retardancy, heat-shielding properties, mechanical performance, light weight, and wearing comfort, and is of great industrial value.
Claims (10)
（１）芳香族アラミド繊維とポリベンズオキサゾール繊維のみからなる。
（２）目付けが１５０～２１５ｇ／ｍ２である。
（３）ＩＳＯ１３９３４－１で規定する引張強さが２０００Ｎ以上である。
（４）ＩＳＯ１７４９２で規定される試験装置を用いて熱流束８４ｋＷ／ｍ２の火炎で１０秒間曝露した後の引張強さ保持率が１０％以上である。
（５）前記表地層において、芳香族アラミド繊維とポリベンズオキサゾール繊維の混合比率が、６０：４０～９０：１０である。 A heat-resistant protective suit comprising a surface layer, an intermediate layer, and a heat-shielding layer, the surface layer satisfying the following requirements (1) to (5) simultaneously:
(1) Made only of aromatic aramid fibers and polybenzoxazole fibers.
(2) The basis weight is 150 to 215 g/ m2 .
(3) The tensile strength specified in ISO 13934-1 is 2000 N or more.
(4) The tensile strength retention rate after exposure to a flame with a heat flux of 84 kW/ m2 for 10 seconds using a test device specified in ISO 17492 is 10% or more.
(5) In the surface layer, the blend ratio of the aromatic aramid fiber and the polybenzoxazole fiber is 60:40 to 90:10.
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|---|---|---|---|---|
| WO2007018082A1 (en) | 2005-08-09 | 2007-02-15 | Teijin Techno Products Limited | Woven fabric of two-layer structure and heat-resistant protective garment comprising the same |
| JP2009249758A (en) | 2008-04-04 | 2009-10-29 | Toyobo Co Ltd | Core-sheath conjugate yarn having excellent covering property and abrasion resistance, and woven or knitted fabric |
| JP2013542334A (en) | 2010-09-23 | 2013-11-21 | インヴィスタ テクノロジーズ エスアエルエル | Flame retardant fibers, yarns and fabrics made from these |
| JP2015094043A (en) | 2013-11-12 | 2015-05-18 | 帝人株式会社 | Fabric and fiber product |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007018082A1 (en) | 2005-08-09 | 2007-02-15 | Teijin Techno Products Limited | Woven fabric of two-layer structure and heat-resistant protective garment comprising the same |
| JP2009249758A (en) | 2008-04-04 | 2009-10-29 | Toyobo Co Ltd | Core-sheath conjugate yarn having excellent covering property and abrasion resistance, and woven or knitted fabric |
| JP2013542334A (en) | 2010-09-23 | 2013-11-21 | インヴィスタ テクノロジーズ エスアエルエル | Flame retardant fibers, yarns and fabrics made from these |
| JP2015094043A (en) | 2013-11-12 | 2015-05-18 | 帝人株式会社 | Fabric and fiber product |
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