JP2006016715A - Polybenzazole fiber reinforced cloth - Google Patents

Polybenzazole fiber reinforced cloth Download PDF

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JP2006016715A
JP2006016715A JP2004193378A JP2004193378A JP2006016715A JP 2006016715 A JP2006016715 A JP 2006016715A JP 2004193378 A JP2004193378 A JP 2004193378A JP 2004193378 A JP2004193378 A JP 2004193378A JP 2006016715 A JP2006016715 A JP 2006016715A
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fiber
polybenzazole
fibers
fabric
yarn
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Hironori Eguchi
弘則 江口
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Toyobo Co Ltd
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Toyobo Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a polybenzazole fiber reinforced cloth having excellent tear resistance, abrasion resistance, scratch resistance, and heat resistance and improved in aesthetic properties of an outward appearance and light resistance. <P>SOLUTION: This polybenzazole fiber reinforced cloth is composed of a polybenzazole fiber and another dyeable fiber different from the polybenzazole fiber, wherein the other dyeable fiber is positioned on one of the surfaces of the cloth and the polybenzazole fiber is positioned on at least a part of the other surface of the cloth. Further, the polybenzazole fiber reinforced cloth is composed so that the polybenzazole fiber is formed into a conjugated yarn thread, paralleled yarn, or twisted union yarn, and then positioned on the other surface of the cloth. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、耐引裂性、耐磨耗性、耐切創性および耐熱性に優れた強化布帛に関するものであり、より詳しくは高強力および耐熱性を有するポリベンザゾール繊維の特徴を活かし、染色可能な他の繊維と複合することで、外観の審美性と耐光性に優れたポリベンザゾール繊維強化布帛を提供するものである。   The present invention relates to a reinforced fabric excellent in tear resistance, abrasion resistance, cut resistance and heat resistance, and more specifically, it can be dyed by making use of the characteristics of polybenzazole fiber having high strength and heat resistance. By combining with other fibers, a polybenzazole fiber reinforced fabric excellent in appearance aesthetics and light resistance is provided.

従来から防護機能を有する布帛に使用される高強度繊維素材として、全芳香族ポリエステル、超高分子量ポリエチレン繊維などが知られており、また、耐熱特性を有する繊維素材として、芳香族メタアラミド繊維、ポリアミドイミド繊維、ポリイミド繊維、ポリフェニレンサルファイト繊維(PPS)、耐炎化繊維、フッ素繊維が知られており、さらに、高強度および耐熱性を有する繊維素材として芳香族パラアラミド繊維が知られている。これらの特性を活かした強化布帛が、過酷な状況下で着用するユニフォーム、防火服、作業服、アウトドア衣料、レーシングウエア、スポーツ衣料、あるいは、スーツ、ジーンズ、カバン地、手袋などに使用されている(例えば、非特許文献1、2)。
一方、従来の高強度および耐熱性を凌ぐ繊維として、ポリベンゾオキサゾールもしくはポリベンゾチアゾールまたはこれらのコポリマーから構成されるポリベンザゾール繊維が知られており、該繊維を使用した強化布帛が期待されている。
繊維科学8・9月合併号、P.32(1998) 加工技術 VOL.34、No.9、P.12(1999)
Conventionally known as high-strength fiber materials used for fabrics having a protective function are wholly aromatic polyesters, ultra-high molecular weight polyethylene fibers, and the like, and as fiber materials having heat resistance characteristics, aromatic meta-aramid fibers and polyamides. Imide fiber, polyimide fiber, polyphenylene sulfite fiber (PPS), flame-resistant fiber, and fluorine fiber are known, and aromatic para-aramid fiber is known as a fiber material having high strength and heat resistance. Reinforced fabrics that make use of these characteristics are used in uniforms, fireproof clothing, work clothes, outdoor clothing, racing wear, sports clothing, suits, jeans, bags, gloves, etc., worn under severe conditions (For example, Non-Patent Documents 1 and 2).
On the other hand, polybenzoxazole or polybenzothiazole or polybenzazole fiber composed of a copolymer thereof is known as a fiber that surpasses conventional high strength and heat resistance, and a reinforced fabric using the fiber is expected. Yes.
Textile Science August / September Merger, P.32 (1998) Processing technology VOL.34, No.9, P.12 (1999)

しかしながら、ポリベンザゾール繊維は日光や白熱電球、蛍光灯などの光によって変色したり、物性低下を招くおそれがある。そのため、屋外で長時間使用する際には、濃色のコーティングやフィルムなどで光を遮蔽する必要があった。 However, polybenzazole fibers may be discolored by sunlight, incandescent light bulbs, fluorescent lights, or the like, or may cause deterioration in physical properties. Therefore, when used outdoors for a long time, it was necessary to shield light with a dark color coating or film.

一方、ポリベンザゾール繊維を用いた複合糸およびその布帛も公知である(例えば、特許文献1、2)。
特開平7−189074号公報 特開平7−238436号公報
On the other hand, composite yarns using polybenzazole fibers and fabrics thereof are also known (for example, Patent Documents 1 and 2).
Japanese Patent Laid-Open No. 7-189074 JP 7-238436 A

これらの方法を用いて得られた布帛は、耐引裂性、耐磨耗性、耐切創性および耐熱性の特性を有し、染色可能な繊維と複合することで審美性や風合について改善され、また耐光性もある程度改善された。しかしながら、複合糸の被覆性については完全に芯糸をカバーするものではなく、わずかな芯糸の露出も見られ、ある程度の光の透過は避けられない。したがって長時間の光を受けた場合には、ポリベンザゾール繊維の強度低下が起こるとともに、ポリベンザゾール繊維側の色調の変化により、染色された繊維も影響を受け、布帛全体が変色したように見える問題があった。また、磨耗を受けた場合、ポリベンザゾール繊維が露出し、ピリング特性が悪くなるとともに、露出したポリベンザゾール繊維部分の強度低下や色調の変化がより加速される問題があった。   Fabrics obtained using these methods have tear resistance, abrasion resistance, cut resistance and heat resistance characteristics, and are improved in terms of aesthetics and texture by being combined with dyeable fibers. In addition, light resistance was improved to some extent. However, the covering property of the composite yarn does not completely cover the core yarn, and slight exposure of the core yarn is also observed, and a certain amount of light transmission is inevitable. Therefore, when receiving light for a long time, the strength of the polybenzazole fiber is reduced, and the dyed fiber is also affected by the change in the color tone of the polybenzazole fiber, so that the entire fabric is discolored. There was a visible problem. In addition, when it is worn, the polybenzazole fibers are exposed, the pilling characteristics are deteriorated, and there is a problem that the strength of the exposed polybenzazole fibers is reduced and the color tone is further accelerated.

本発明は従来技術の課題を背景になされたもので、外観の審美性と耐光性をさらに改善し、耐引裂性、耐磨耗性、耐切創性および耐熱性に優れ、過酷な状況下で着用するユニフォーム、防火服、作業服、アウトドア衣料、レーシングウエア、スポーツ衣料、あるいは、スーツ、ジーンズ、カバン地、手袋に好適な布帛を提供するものである。   The present invention has been made against the background of the problems of the prior art, further improving the aesthetics and light resistance of the appearance, and excellent in tear resistance, abrasion resistance, cut resistance and heat resistance, under severe conditions. The present invention provides a fabric suitable for a uniform to be worn, fireproof clothing, work clothing, outdoor clothing, racing wear, sports clothing, or a suit, jeans, bag, and gloves.

本発明者らは上記課題を解決するため、鋭意研究した結果、本発明を完成するに到った。即ち本発明は、下記の構成からなる。
1.ポリベンザゾール繊維と他の染色可能な繊維から構成されてなる布帛であって、当該布帛の一方の面には他の染色可能な繊維が配置され、他方の面には少なくとも一部にポリベンザゾール繊維が配置されたものであることを特徴とするポリベンザゾール繊維強化布帛。
2.布帛の他方の面にポリベンザゾール繊維と他の染色可能な繊維からなる複合糸条を配置してなることを特徴とする上記第1記載のポリベンザゾール繊維強化布帛。
3.複合糸条が、ポリベンザゾール繊維が芯に、他の染色可能な繊維が鞘に配されてなるものであることを特徴とする上記第2記載のポリベンザゾール繊維強化布帛。
4.複合糸条が、ポリベンザゾール繊維と他の染色可能な繊維が引き揃え又は交撚されてなるものであることを特徴とする上記第2記載のポリベンザゾール繊維強化布帛。
5.ポリベンザゾール繊維の引張強度が30cN/dtex以上で限界酸素指数(LOI)が55以上であることを特徴とする上記第1〜4のいずれかに記載のポリベンザゾール繊維強化布帛。
As a result of intensive studies in order to solve the above problems, the present inventors have completed the present invention. That is, this invention consists of the following structures.
1. A fabric comprising polybenzazole fibers and other dyeable fibers, wherein the other dyeable fibers are arranged on one side of the fabric and at least partly a polybenzaza on the other side A polybenzazole fiber reinforced fabric in which sol fibers are arranged.
2. 2. The polybenzazole fiber-reinforced fabric according to the first aspect, wherein a composite yarn composed of polybenzazole fibers and other dyeable fibers is disposed on the other surface of the fabric.
3. 2. The polybenzazole fiber-reinforced fabric according to the second aspect, wherein the composite yarn is formed by arranging polybenzazole fibers in the core and other dyeable fibers in the sheath.
4). 2. The polybenzazole fiber-reinforced fabric according to the second aspect, wherein the composite yarn is formed by aligning or twisting polybenzazole fibers and other dyeable fibers.
5. 5. The polybenzazole fiber reinforced fabric according to any one of the above 1 to 4, wherein the polybenzazole fiber has a tensile strength of 30 cN / dtex or more and a limiting oxygen index (LOI) of 55 or more.

本発明による強化布帛は、布帛の一面(表面)を他の染色可能な繊維で配置させ、他方の面(裏面)の少なくとも一部にポリベンザゾール繊維を配置させるものである。その結果、外観の審美性と耐光性をさらに改善し、耐引裂性、耐磨耗性、耐切創性および耐熱性に優れ、過酷な状況下で着用するユニフォーム、作業服、アウトドア衣料、レーシングウエア、スポーツ衣料、あるいは、スーツ、ジーンズ、カバン地、手袋などを提供することを可能とした。   In the reinforced fabric according to the present invention, one side (front surface) of the fabric is arranged with other dyeable fibers, and polybenzazole fibers are arranged on at least a part of the other side (back side). As a result, the aesthetics and light resistance of the appearance are further improved, with excellent tear resistance, abrasion resistance, cut resistance and heat resistance. Uniforms, work clothes, outdoor clothing and racing wear worn under harsh conditions , Sports clothing, or suits, jeans, bags, gloves, etc. could be provided.

以下、本発明を詳細に説明する。
本発明に用いられるポリベンザゾール繊維とは、ポリベンザゾールポリマーよりなる繊維をいい、ポリベンザゾール(PBZ)とは、ポリベンゾオキサゾール(PBO)ホモポリマー、ポリベンゾチアゾール(PBT)ホモモリマー及びそれらPBO、PBTのランダム、シーケンシャルあるいはブロック共重合ポリマーをいう。引張強度は30cN/dtex以上、好ましくは33cN/dtex以上である。
Hereinafter, the present invention will be described in detail.
The polybenzazole fiber used in the present invention refers to a fiber composed of a polybenzazole polymer, and polybenzazole (PBZ) refers to a polybenzoxazole (PBO) homopolymer, a polybenzothiazole (PBT) homopolymer, and their PBO. , PBT random, sequential or block copolymer. The tensile strength is 30 cN / dtex or more, preferably 33 cN / dtex or more.

本発明に用いられるポリベンザゾール繊維の形態は、特に限定されるものではなく、モノフィラメント、マルチフィラメント、撚糸、紡績糸、牽切紡績糸、エアー交絡糸、捲縮加工糸を用いることが出きる。また、風合いの観点から紡績糸が好ましい。   The form of the polybenzazole fiber used in the present invention is not particularly limited, and monofilament, multifilament, twisted yarn, spun yarn, check spun yarn, air entangled yarn, crimped yarn can be used. . Further, spun yarn is preferred from the viewpoint of texture.

本発明において使用される染色可能な繊維とは、直接染料、バット染料、ナフトール染料、硫化染料、分散染料、反応染料、酸性染料、カチオン染料などによって染色することが可能な一般衣料や産業用に使用される繊維を意味し、綿、羊毛、獣毛、麻などの天然繊維から、ポリエステル、ナイロン、レーヨン、アセテート、アクリル、ビニロン、全芳香族アラミド繊維、ポリアミドイミド繊維、ポリイミド繊維などの合成繊維等があげられ、特に限定されるものではないが、磨耗を受けた際に熔融や熱融着を起こさないものが好ましい。   The dyeable fiber used in the present invention is for general clothing and industrial products that can be dyed with direct dyes, vat dyes, naphthol dyes, sulfur dyes, disperse dyes, reactive dyes, acid dyes, cationic dyes, etc. This refers to the fibers used, from natural fibers such as cotton, wool, animal hair and hemp, to synthetic fibers such as polyester, nylon, rayon, acetate, acrylic, vinylon, wholly aromatic aramid fiber, polyamideimide fiber, polyimide fiber, etc. Although not particularly limited, those which do not cause melting or heat fusion when subjected to wear are preferable.

なお、これらの染色可能な繊維のなかでも、綿、羊毛、獣毛、麻などの天然繊維、ポリエステル、ナイロン、レーヨン、アセテート、アクリル、ビニロンなどの合成繊維は、耐熱、耐炎布帛としての用途を考えると、耐炎性が付与しされている方が好ましい。例えば耐炎性が付与されたセルロース系の繊維とは、耐炎性を有するいわゆる難燃性のセルロース系の繊維であり、具体的には、繊維質量に対して1〜5質量%のリン原糸が付与された綿、レーヨン、ポリノジック繊維あるいはそれらの繊維との混合物を示しており、さらに好ましくはそれに加え、繊維質量に対して0.5〜3質量%の窒素原糸が付与された上記の繊維をいう。また、JIS K 7201により評価された限界酸素指数(LOI値)が23以上、好ましくは25以上、さらに好ましくは27以上の上記セルロース系繊維である。リン含有量が1%以下であると付与される耐炎性が充分ではなく、また、5%以上を超えると、製造工程への悪影響やまた、繊維としての強度に悪影響を及ぼす。また例えば耐炎性が付与された綿は、含有リン及び/または含有窒素化合物で後加工された綿が好ましい。また耐炎性が付与されたレーヨンあるいはポリノジック繊維は後加工によるものでもよいが、例えば、特公昭48−2693号公報に記載されているようなビスコース人造繊維製造用紡糸原液中に分子量500から10000程度のポリホスホネート化合物を添加し、常法によって紡糸した繊維と複合する前でも複合した後でも良い。また、耐炎性を付与された羊毛とは、例えば、特殊なジルコニウムやチタン化合物などを化学結合させたものが挙げられる。   Among these dyeable fibers, natural fibers such as cotton, wool, animal hair and hemp, and synthetic fibers such as polyester, nylon, rayon, acetate, acrylic and vinylon are used as heat and flame resistant fabrics. In view of this, it is preferable that flame resistance is imparted. For example, a cellulosic fiber to which flame resistance is imparted is a so-called flame-retardant cellulosic fiber having flame resistance, and specifically, 1 to 5% by mass of phosphorus raw yarn with respect to the fiber mass. The above-mentioned fibers, which are applied cotton, rayon, polynosic fiber or a mixture thereof, and more preferably 0.5 to 3% by mass of nitrogen raw yarn with respect to the mass of the fiber. Say. Further, the above-mentioned cellulosic fibers having a limiting oxygen index (LOI value) evaluated by JIS K 7201 of 23 or more, preferably 25 or more, and more preferably 27 or more. When the phosphorus content is 1% or less, the flame resistance imparted is not sufficient, and when it exceeds 5%, the production process is adversely affected and the strength as a fiber is also adversely affected. Further, for example, the cotton to which flame resistance is imparted is preferably cotton post-processed with contained phosphorus and / or a contained nitrogen compound. The rayon or polynosic fiber imparted with flame resistance may be post-processed, but for example, a molecular weight of 500 to 10,000 in a spinning stock solution for producing viscose artificial fiber as described in Japanese Patent Publication No. 48-2893. A polyphosphonate compound of a certain degree may be added and may be before or after being combined with the fiber spun by a conventional method. Examples of the wool imparted with flame resistance include, for example, those obtained by chemically bonding special zirconium or titanium compounds.

本発明において使用される複合糸条は、ポリベンザゾール繊維と他の染色可能な繊維からなるもので、ポリベンザゾール繊維を糸の芯部に、他の染色可能な繊維を糸の周辺部に配置された複合糸は、特開昭57−5924号公報に記載されているように、精紡機段階で複合する方法や、例えば、特開平3−269129号公報にあるような方法でポリベンザゾール繊維のフィラメント周辺部に染色可能な繊維を配置させる方法、また、芯部のポリベンザゾール繊維としてフィラメントの代わりに紡績糸を用いる方法などで得ることが出きるが、本発明おいてその複合糸条の製法は特に限定されることはなく、その構造が重要である。また、複合糸条におけるポリベンザゾール繊維の構成比は5%以上90%以下、さらに好ましくは10%以上80%以下である。以上の方法で得られる複合糸条は綿番手5から100番手、さらに好ましくは7から80番手である。これらの複合糸条は単糸使いでもよく、また、単糸を2本以上引き揃えて下撚りと反対の方向に上撚を加えたもろより糸を用いても良い。   The composite yarn used in the present invention is composed of polybenzazole fibers and other dyeable fibers, with the polybenzazole fibers in the yarn core and other dyeable fibers in the periphery of the yarn. As described in JP-A-57-5924, the arranged composite yarn is prepared by a method of compounding at the spinning machine stage, for example, polybenzazole by a method as described in JP-A-3-269129. It can be obtained by a method of arranging a dyeable fiber around the filament periphery of the fiber or a method of using a spun yarn instead of a filament as the polybenzazole fiber of the core. The manufacturing method of the strip is not particularly limited, and its structure is important. The composition ratio of the polybenzazole fiber in the composite yarn is 5% or more and 90% or less, more preferably 10% or more and 80% or less. The composite yarn obtained by the above method has a cotton count of 5 to 100, more preferably 7 to 80. These composite yarns may be used as a single yarn, or may be a twisted yarn obtained by aligning two or more single yarns and adding an upper twist in the direction opposite to the lower twist.

本発明における強化布帛は、ポリベンザゾール繊維と他の染色可能な繊維からなり、布帛の表面に染色可能な繊維が配置され、布帛の裏面に配置される糸条の少なくとも一方がポリベンザゾール繊維である二層構造布帛である。該布帛は織物または編物であって、特にその組織および構造を限定するものではなく、またここで言う二層構造とは、表面と裏面が一体構造になっているいわゆる二重織、二重編に限定されるものでもない。例えば、表面と裏面の布帛がそれぞれ独立しており、例えば、低融点ポリマーからなる不織布などでボンディングにより接着された二層構造布帛でもよく、さらに、表面と裏面の布帛がそれぞれ織物と編物あるいは編物と織物というように、異なる構造のもの同士で構成されていても良い。   The reinforcing fabric according to the present invention comprises polybenzazole fibers and other dyeable fibers, the dyeable fibers are disposed on the surface of the fabric, and at least one of the yarns disposed on the back surface of the fabric is a polybenzazole fiber. Is a two-layer fabric. The fabric is a woven fabric or a knitted fabric and is not particularly limited in its structure and structure. The two-layer structure referred to here is a so-called double woven or double knitted structure in which the front surface and the back surface are integrated. It is not limited to. For example, the front and back fabrics are independent of each other, and may be, for example, a two-layer structure fabric bonded by bonding with a non-woven fabric made of a low melting point polymer. It may be composed of materials having different structures such as woven fabric and fabric.

以下、実施例をもって本特許を説明するが、発明の要旨を超えない限り実施例に拘束されるものではない。   Hereinafter, although this patent is demonstrated with an Example, as long as it does not exceed the summary of invention, it is not restrained by an Example.

(実施例1)
極限粘度30dl/gのシス−ポリベンゾオキサゾ−ルをポリリン酸に14%の濃度で溶解した紡糸ドープを、0.22mmのオリフィス径を有する332孔数のノズルから160℃で単孔吐出量0.122を押出した。ノズルから押出された繊維状のドープはエアーギャップを通過し、その中で引っ張られ、約22℃に調整された凝固浴を通り、さらに走行速度200m/minで連続的に5対のローラーで水洗され、続いて一旦巻き取られることなく、連続的に以下のような乾燥工程で乾燥された。乾燥には4つの乾燥ローラーを使用し、各温度は順番に180℃、220℃、220℃、220℃に設定した。各ローラーの滞留時間をそれぞれ約17secに調整することによって、最終的な水分率1.1%のポリベンゾオキサゾ−ル繊維を得た。得られた繊維は繊度555dtex、引張強度37.2cN/dtex、破断伸度3.2%、引張弾性率1120cN/dtexであった。
Example 1
A spinning dope in which cis-polybenzoxazole having an intrinsic viscosity of 30 dl / g was dissolved in polyphosphoric acid at a concentration of 14% was discharged from a 332-hole nozzle having an orifice diameter of 0.22 mm at 160 ° C. 0.122 was extruded. The fibrous dope extruded from the nozzle passes through the air gap, is pulled there, passes through a coagulation bath adjusted to about 22 ° C., and is further washed with five pairs of rollers at a running speed of 200 m / min. Subsequently, the film was continuously dried by the following drying process without being wound once. Four drying rollers were used for drying, and each temperature was set to 180 ° C, 220 ° C, 220 ° C, and 220 ° C in order. By adjusting the residence time of each roller to about 17 seconds, a final polybenzoxazole fiber having a moisture content of 1.1% was obtained. The obtained fiber had a fineness of 555 dtex, a tensile strength of 37.2 cN / dtex, a breaking elongation of 3.2%, and a tensile modulus of 1120 cN / dtex.

得られたポリベンゾオキサゾ−ル繊維を平均繊維長51mmにカットし、その原綿とコットンを用いて、特開平57−5924号公報の手法でポリベンザゾール繊維が糸の芯部にその周辺部にコットンファイバーが配置された10番手の複合糸を得た。この糸のポリベンザゾール繊維の複合比は30質量%であった。この複合糸を織物の裏面の経糸、緯糸に用い、織物の表面はコットン100%の60番手双糸を経糸、緯糸に用い、370g/m2の綾二重織物を得た。 The obtained polybenzoxazole fiber is cut to an average fiber length of 51 mm, and the raw cotton and cotton are used to make the polybenzazole fiber at the core of the yarn by the technique of Japanese Patent Application Laid-Open No. 57-5924. A 10th composite yarn in which cotton fibers were arranged was obtained. The composite ratio of polybenzazole fiber in this yarn was 30% by mass. This composite yarn was used for the warp and weft on the back side of the fabric, and the surface of the fabric was 100% cotton 60-count double yarn for the warp and weft to give a 370 g / m 2 twill double fabric.

(実施例2)
実施例1と同様の手法で得られたポリベンゾオキサゾール繊維を51mmにカットし、通常の方法でポリベンゾオキサゾール繊維100%の20番手の紡績糸を得た。このポリベンゾオキサゾール繊維100%の20番手紡績糸と110dtexのポリエステルフィラメントとを引き揃え、S撚り100T/Mで交撚した。このようにして得られた交撚糸を織物の裏面の経糸、緯糸に用い、織物の表面はウール100%の50番手双糸を経糸、緯糸に用い、330g/m2の綾二重織物を得た。
(Example 2)
The polybenzoxazole fiber obtained by the same method as in Example 1 was cut into 51 mm, and a 20th spun yarn of 100% polybenzoxazole fiber was obtained by an ordinary method. This polybenzoxazole fiber 100% 20th spun yarn and 110 dtex polyester filament were drawn together and laid with an S twist of 100 T / M. The cross-twisted yarn thus obtained was used for the warp and weft on the back side of the fabric, and the surface of the fabric was used for the warp and weft of 50% double yarn of 100% wool to obtain a 330 g / m 2 twill double fabric. It was.

(実施例3)
実施例1と同様の手法で得られたポリベンゾオキサゾール繊維フィラメントを経糸と緯糸に用い、130g/m2の平織物を得た。また、ポリエステル95%、コットン5%の混用比率からなる30番手混紡糸を用い、190g/m2の綾織物を得た。この190g/m2の綾織物を表面に、ポリベンゾオキサゾールからなる織物を裏面に配置し、これらを低融点ポリアミド不織布で熱融着させることにより、2層構造布帛を得た。
Example 3
Using a polybenzoxazole fiber filament obtained in the same manner as in Example 1 for warp and weft, a plain fabric of 130 g / m 2 was obtained. In addition, a 190 g / m 2 twill fabric was obtained using a 30-th blend yarn comprising 95% polyester and 5% cotton. The 190 g / m 2 twill fabric was placed on the front surface and the fabric made of polybenzoxazole was placed on the back surface, and these were thermally fused with a low-melting polyamide nonwoven fabric to obtain a two-layer structure fabric.

(比較例1)
実施例1と同様の手法で得られたポリベンゾオキサゾール繊維を平均繊維長51mmにカットし、その原綿30%とコットン70%の混用率からなる20番手混紡糸を得た。さらに、これを用いて、290g/m2の綾二重織物を得た。
(Comparative Example 1)
A polybenzoxazole fiber obtained by the same method as in Example 1 was cut into an average fiber length of 51 mm to obtain a 20th blend yarn having a blend ratio of 30% raw cotton and 70% cotton. Further, a 290 g / m 2 twill double woven fabric was obtained using this.

(比較例2)
実施例1と同様の手法で得られたポリベンゾオキサゾール繊維を平均繊維長51mmにカットし、特開平57−5924号公報の手法でポリベンザゾール繊維が糸の芯部にその周辺部にコットンファイバーが配置された10番手の複合糸を得た。この糸のポリベンザゾール繊維の複合比は30質量%であった。この複合糸を経糸、緯糸に用い、370g/m2の綾二重織物を得た。
(Comparative Example 2)
The polybenzoxazole fiber obtained by the same method as in Example 1 was cut into an average fiber length of 51 mm, and the polybenzazole fiber was formed at the core of the yarn and the cotton fiber at the periphery by the method of Japanese Patent Application Laid-Open No. 57-5924. A 10th composite yarn in which was placed was obtained. The composite ratio of polybenzazole fiber in this yarn was 30% by mass. Using this composite yarn as warp and weft, a 370 g / m 2 twill double woven fabric was obtained.

実施例1〜3および比較例1〜2の布帛を用いて、JIS L 1096 シングルタング法に準じ、引張速度10cm/min、試験片幅10cmの条件にて引裂強力を評価した。   Using the fabrics of Examples 1 to 3 and Comparative Examples 1 and 2, the tear strength was evaluated under the conditions of a tensile speed of 10 cm / min and a test piece width of 10 cm according to the JIS L 1096 single tongue method.

また、実施例1〜3および比較例1〜2の布帛を用いて、JIS L 1096 A−1法に準じ、研磨紙P1000、押圧荷重4.45Nの条件にて磨耗強さを評価した。   Further, using the fabrics of Examples 1 to 3 and Comparative Examples 1 and 2, the wear strength was evaluated under the conditions of abrasive paper P1000 and pressing load of 4.45 N in accordance with JIS L 1096 A-1.

さらに、実施例1〜3および比較例1〜2の布帛を、キセノンウエザーメーター(Ci35AW)照射温度63℃で100時間連続照射を実施し、照射後の引裂強力、磨耗強さを評価し、変色度合いについては目視にて判定した。
なお、変色度合いは、○:変化なし、△:やや変色あり、×:顕著な変色あり、で判定した。これらの評価結果を表1にまとめた。
Further, the fabrics of Examples 1 to 3 and Comparative Examples 1 and 2 were continuously irradiated with a xenon weather meter (Ci35AW) irradiation temperature of 63 ° C. for 100 hours to evaluate tear strength and wear strength after irradiation, and discoloration. The degree was determined visually.
The degree of color change was judged as follows: ◯: No change, Δ: Slightly discolored, ×: Significant color change. These evaluation results are summarized in Table 1.

Figure 2006016715
Figure 2006016715

本発明のポリベンザゾール繊維強化布帛は、耐引裂性、耐磨耗性、耐切創性および耐熱性に優れるのみならず、外観の審美性と耐光性にも優れるため、例えば、過酷な状況下で着用するユニフォーム、防火服、作業服、アウトドア衣料、レーシングウエア、スポーツ衣料、あるいは、スーツ、ジーンズ、カバン地、手袋などの布帛として非常に有用である。   The polybenzazole fiber reinforced fabric of the present invention is excellent not only in tear resistance, abrasion resistance, cut resistance and heat resistance, but also in appearance aesthetics and light resistance. It is very useful as a uniform, fireproof clothing, work clothes, outdoor clothing, racing wear, sports clothing, or a fabric such as a suit, jeans, bag, and gloves.

Claims (5)

ポリベンザゾール繊維と他の染色可能な繊維から構成されてなる布帛であって、当該布帛の一方の面には他の染色可能な繊維が配置され、他方の面には少なくとも一部にポリベンザゾール繊維が配置されたものであることを特徴とするポリベンザゾール繊維強化布帛。   A fabric comprising polybenzazole fibers and other dyeable fibers, wherein the other dyeable fibers are arranged on one side of the fabric and at least partly a polybenzaza on the other side A polybenzazole fiber-reinforced fabric in which sol fibers are arranged. 布帛の他方の面にポリベンザゾール繊維と他の染色可能な繊維からなる複合糸条を配置してなることを特徴とする請求項1記載のポリベンザゾール繊維強化布帛。   2. The polybenzazole fiber-reinforced fabric according to claim 1, wherein a composite yarn composed of polybenzazole fibers and other dyeable fibers is disposed on the other surface of the fabric. 複合糸条が、ポリベンザゾール繊維が芯に、他の染色可能な繊維が鞘に配されてなるものであることを特徴とする請求項2記載のポリベンザゾール繊維強化布帛。 3. The polybenzazole fiber-reinforced fabric according to claim 2, wherein the composite yarn is formed by arranging polybenzazole fibers in the core and other dyeable fibers in the sheath. 複合糸条が、ポリベンザゾール繊維と他の染色可能な繊維が引き揃え又は交撚されてなるものであることを特徴とする請求項2記載のポリベンザゾール繊維強化布帛。 The polybenzazole fiber-reinforced fabric according to claim 2, wherein the composite yarn is formed by aligning or twisting polybenzazole fibers and other dyeable fibers. ポリベンザゾール繊維の引張強度が30cN/dtex以上で限界酸素指数(LOI)が55以上であることを特徴とする請求項1〜4のいずれかに記載のポリベンザゾール繊維強化布帛。   The polybenzazole fiber-reinforced fabric according to any one of claims 1 to 4, wherein the polybenzazole fiber has a tensile strength of 30 cN / dtex or more and a limiting oxygen index (LOI) of 55 or more.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN111926433A (en) * 2020-08-14 2020-11-13 河北新大东纺织有限公司 Yarn with controllable white core degree

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN111926433A (en) * 2020-08-14 2020-11-13 河北新大东纺织有限公司 Yarn with controllable white core degree

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