JP4787508B2 - Fiber rope - Google Patents
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- JP4787508B2 JP4787508B2 JP2005019487A JP2005019487A JP4787508B2 JP 4787508 B2 JP4787508 B2 JP 4787508B2 JP 2005019487 A JP2005019487 A JP 2005019487A JP 2005019487 A JP2005019487 A JP 2005019487A JP 4787508 B2 JP4787508 B2 JP 4787508B2
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Description
本発明は、アラミド繊維よりなるロープに関するもので、より詳しくは機械的特性に優れるとともに、耐摩耗性に優れたロープに関するものである。 The present invention relates to a rope made of aramid fibers, and more particularly to a rope having excellent mechanical properties and excellent wear resistance.
従来より、高強度で、細い繊度の繊維からなり、軽量で、柔軟で、取扱い性に優れたロープが要求されている。
このような要求に応えるため、アラミド繊維を用いたロープが開発されており、例えば、特開平１１−２８６８３０号公報には、高い引張強度、引張伸度を有する、繊維ロープに有用なアラミドポリマーが開示されている。
Conventionally, ropes made of high-strength, fine-fine fibers, lightweight, flexible, and easy to handle have been required.
In order to meet such demands, ropes using aramid fibers have been developed. For example, JP-A-11-286830 discloses an aramid polymer having high tensile strength and tensile elongation and useful for fiber ropes. It is disclosed.
しかしながら、これら従来のアラミド繊維は機械的強度には優れるものの、耐摩耗性が悪いため容易に毛羽立ち、繰り返し使用すると強度が低下するという問題点があり、強度が高く、且つ耐摩耗性にも優れた繊維ロープが切望されてきた。
本発明は、上記従来技術を背景になされたもので、その目的は、機械的特性に優れるとともに、耐摩耗性にも優れたロープを提供することにある。 The present invention has been made against the background of the above-described prior art, and an object thereof is to provide a rope having excellent mechanical properties and excellent wear resistance.
すなわち、本発明によれば、１種或いは複数種の補強用繊維を含む繊維ロープであって、該補強用繊維が下記式（１）および下記式（２）の構造反復単位を含む芳香族コポリアミドからなり、その強度が２０ｃＮ／ｄｔｅｘ以上、引張弾性率が５００ｃＮ／ｄｔｅｘ以上の芳香族コポリアミド繊維であることを特徴とする繊維ロープが提供される。 That is, according to the present invention, a fiber rope containing one or more kinds of reinforcing fibers, wherein the reinforcing fibers contain structural repeating units of the following formulas (1) and (2): There is provided a fiber rope characterized by being an aromatic copolyamide fiber made of polyamide and having a strength of 20 cN / dtex or more and a tensile modulus of 500 cN / dtex or more.
本発明によれば、機械的特性に優れるとともに、耐摩耗性にも優れたロープが提供される。 ADVANTAGE OF THE INVENTION According to this invention, while being excellent in a mechanical characteristic, the rope excellent also in abrasion resistance is provided.
以下、本発明の実施の形態について詳細に説明する。
本発明でいう芳香族コポリアミドとは、１種又は２種以上の２価の芳香族基が直接アミド結合により連結されているポリマーであって、該芳香族基は２個の芳香環が酸素、硫黄又はアルキレン基で結合されたものであってもよい。また、これらの２価の芳香族基には、メチル基やエチル基などの低級アルキル基、メトキシ基、クロルキなどのハロゲン基等が含まれていてもよい。
Hereinafter, embodiments of the present invention will be described in detail.
The aromatic copolyamide referred to in the present invention is a polymer in which one or two or more divalent aromatic groups are directly linked by an amide bond, and the two aromatic rings are oxygen atoms. , Sulfur or an alkylene group. In addition, these divalent aromatic groups may include a lower alkyl group such as a methyl group or an ethyl group, a halogen group such as a methoxy group, or a chloro group.
本発明の芳香族コポリアミドは、従来公知の方法にしたがって、アミド系極性溶媒中で芳香族ジカルボン酸クロライドと芳香族ジアミンとを反応せしめてポリマー溶液を得る。 The aromatic copolyamide of the present invention is obtained by reacting an aromatic dicarboxylic acid chloride with an aromatic diamine in an amide polar solvent according to a conventionally known method to obtain a polymer solution.
本発明における芳香族ジカルボン酸ジクロライドは従来公知のもので良い。例えばテレフタル酸ジクロライド、２−クロロテレフタル酸ジクロライド、３−メチルテレフタル酸ジクロライド、４、４’−ビフェニルジカルボン酸ジクロライド、２，６−ナフタレンジカルボン酸ジクロライド、イソフタル酸ジクロライド等が挙げられる。 The aromatic dicarboxylic acid dichloride in the present invention may be a conventionally known one. Examples thereof include terephthalic acid dichloride, 2-chloroterephthalic acid dichloride, 3-methylterephthalic acid dichloride, 4,4'-biphenyldicarboxylic acid dichloride, 2,6-naphthalenedicarboxylic acid dichloride, and isophthalic acid dichloride.
本発明においては２種の芳香族ジアミンを用いる。一方の芳香族ジアミンはパラフェニレンジアミン（ＰＰＤ）であり、もう一方の芳香族ジアミンは置換又は非置換のフェニルベンジミダゾール基を有する芳香族ジアミン類から選ばれた１種であり、中でも入手のし易さ、得られる繊維が優れた引張強度、初期モジュラス等を有する点から、５（６）−アミノ−２−（４−アミノフェニル）ベンジミダゾールが良い。 In the present invention, two kinds of aromatic diamines are used. One aromatic diamine is paraphenylene diamine (PPD), and the other aromatic diamine is one selected from aromatic diamines having a substituted or unsubstituted phenylbenzimidazole group. ease, fibers excellent tensile strength obtained from the viewpoint of having an initial modulus, etc., 5 (6) - amino-2- (4-aminophenyl) benzimidazole good.
本発明で用いられるアミド系極性溶媒としては、Ｎ，Ｎ−ジメチルホルムアミド、Ｎ，Ｎ−ジメチルアセトアミド、Ｎ−メチル−２−ピロリドン、ジメチルイミダゾリジノンなどを例示することができるが、特に、芳香族ポリアミドの重合からドープ調整、湿式紡糸工程に至るまでの取扱い性や安定性及び害溶媒の毒性等の点から、Ｎ−メチル−２−ピロリドンが好ましい。 Examples of the amide polar solvent used in the present invention include N, N-dimethylformamide, N, N-dimethylacetamide, N-methyl-2-pyrrolidone, dimethylimidazolidinone and the like. N-methyl-2-pyrrolidone is preferred from the viewpoints of handleability and stability from polymerization of the aromatic polyamide to dope adjustment and wet spinning process, and toxicity of harmful solvents.
本発明における芳香族コポリアミドは、下記式（１）および下記式（２）の構造反復単位を含む芳香族コポリアミドからなる芳香族コポリアミド繊維である必要があり、下記式（２）の構造反復単位が構造単位の全量に対して３０〜１００モル％、さらに好ましくは５０〜１００モル％の範囲で含まれていることが好ましい。該含有量が３０モル％未満の場合には重合反応においては反応溶液が濁るという問題が生じ、この様な濁ったドープでは製糸することが困難となることがある。 The aromatic copolyamide in the present invention needs to be an aromatic copolyamide fiber composed of an aromatic copolyamide containing structural repeating units of the following formula (1) and the following formula (2), and the structure of the following formula (2) It is preferable that the repeating unit is contained in the range of 30 to 100 mol%, more preferably 50 to 100 mol%, based on the total amount of the structural unit. When the content is less than 30 mol%, there arises a problem that the reaction solution becomes cloudy in the polymerization reaction, and it is sometimes difficult to produce a yarn with such a cloudy dope.
本発明の芳香族コポリアミドは、公知のアラミド繊維の製造方法により製糸することができる。例えば、半乾半湿式紡糸法によりドープを凝固液中に押し出し、凝固液から凝固糸として引き取り、水洗工程にて溶媒を十分に除去し、乾燥工程にて充分に乾燥したのち必要に応じて熱処理を行う。 The aromatic copolyamide of the present invention can be produced by a known method for producing aramid fibers. For example, the dope is extruded into the coagulation liquid by a semi-dry semi-wet spinning method, taken as a coagulated thread from the coagulation liquid, the solvent is sufficiently removed in the water washing process, and after sufficient drying in the drying process, heat treatment is performed as necessary. I do.
本発明における繊維の熱処理温度は４００〜５００℃の範囲とすることが好ましい。該温度が４００℃未満の場合には、繊維が充分に配向結晶化を起こすことができないために充分な引張強度、耐摩耗性が得られない場合がある。また、該温度が５００℃を越える場合には、繊維が熱劣化を引き起こすために充分な引張強度、初期モジュラスが得られないことがある。 The heat treatment temperature of the fiber in the present invention is preferably in the range of 400 to 500 ° C. When the temperature is less than 400 ° C., the fiber cannot sufficiently undergo oriented crystallization, so that sufficient tensile strength and wear resistance may not be obtained. On the other hand, when the temperature exceeds 500 ° C., sufficient tensile strength and initial modulus may not be obtained because the fiber causes thermal deterioration.
また、本発明で得られる芳香族コポリアミド繊維は引張強度２０ｃＮ／ｄｔｅｘ、初期モジュラス５００ｃＮ／ｄｔｅｘ以上であることが必要である。 The aromatic copolyamide fiber obtained in the present invention is required to have a tensile strength of 20 cN / dtex and an initial modulus of 500 cN / dtex or more.
上記芳香族コポリアミド繊維の繊度やフィラメント数に特に制限はないが、強度の観点からは単糸繊度は０．５〜６ｄｔｅｘが好ましい。必要に応じて、単糸繊度は１０ｄｔｅｘ以上であってもよい。また、長繊維であっても短繊維であってもよい。 The fineness and the number of filaments of the aromatic copolyamide fiber are not particularly limited, but the single yarn fineness is preferably 0.5 to 6 dtex from the viewpoint of strength. If necessary, the single yarn fineness may be 10 dtex or more. Moreover, it may be a long fiber or a short fiber.
本発明において、上記芳香族コポリアミド繊維を含む繊維ロープの構造としては、撚り合わせロープ（３つ打ち、４つ打ち、６つ打ち、バラ打ち）、網索ロープ、延縄等が挙げられる。この際、撚り数、撚り構造は用途、目的に応じて適宜選定される。一般的には、複数本の芳香族コポリアミド繊維を引き揃えてストランドとした後に下撚りを行なって下撚り糸とし、複数本の下撚り糸を撚り合わせて下撚りとは逆方向に上撚りを加えて繊維ロープとする。この際、繊維ロープに加える撚り数としては３〜１０００回／ｍとすることが好適である。用途によっては、得られたロープを更に複数本合わせて下撚り／上撚りを加えた繊維ロープとしてもよい。また、本発明の繊維ロープは、芳香族コポリアミド繊維以外の従来公知の繊維と組み合わせてもよい。 In the present invention, examples of the structure of the fiber rope including the aromatic copolyamide fiber include a twisted rope (three, four, six and loose), a rope rope, and a long line. At this time, the number of twists and the twisted structure are appropriately selected according to the use and purpose. In general, a plurality of aromatic copolyamide fibers are aligned to form a strand, and then subjected to a lower twist to form a lower twisted yarn. Use a fiber rope. At this time, the number of twists added to the fiber rope is preferably 3 to 1000 times / m. Depending on the application, a plurality of obtained ropes may be further combined to form a fiber rope having a lower twist / upper twist. Moreover, you may combine the fiber rope of this invention with conventionally well-known fibers other than an aromatic copolyamide fiber.
上記繊維ロープには、必要に応じて、油剤、顔料、難燃剤、耐候剤等を付与してもよい。また、上記繊維ロープには樹脂を被覆しても良く、被覆する樹脂の組成は特に制限はなく、ポリエステル樹脂、アクリル樹脂、ＡＢＳ樹脂等公知の樹脂を用いることができる。 You may give an oil agent, a pigment, a flame retardant, a weathering agent, etc. to the said fiber rope as needed. The fiber rope may be coated with a resin, and the composition of the resin to be coated is not particularly limited, and a known resin such as a polyester resin, an acrylic resin, or an ABS resin can be used.
以下、実施例により本発明をさらに具体的に説明する。なお、実施例中の各特性は、以下の方法に従って評価した。
（１）繊維の摩耗試験
耐摩耗性は、ＪＩＳ Ｌ１０９５のうち摩耗強さを測定するＢ法に準拠した摩耗試験により、破断までの摩耗回数にて評価した。
Hereinafter, the present invention will be described more specifically with reference to examples. In addition, each characteristic in an Example was evaluated in accordance with the following method.
(1) Abrasion test of fiber Abrasion resistance was evaluated by the number of wear until breakage by a wear test based on JIS L1095 in accordance with the B method for measuring the wear strength.
［実施例１］
パラフェニレンジアミン（ＰＰＤ）１５モル、５（６）−アミノ−２−（４−アミノフェニル）ベンジミダゾール（ＤＡＰＢＩ）３５モル、テレフタル酸クロライド５０モルからなる重合体ドープを紡出した未延伸糸を、熱処理温度４８０℃にて熱処理を行い、１１００ｄｔｅｘ、５００フィラメント芳香族コポリアミド繊維を得た。
得られた芳香族コポリアミド繊維の引張強度は２４．９ｃＮ／ｄｔｅｘ、引張り弾性率は８９９ｃＮ／ｄｔｅｘであった。
[Example 1]
An undrawn yarn obtained by spinning a polymer dope consisting of 15 mol of paraphenylenediamine (PPD), 35 mol of 5 (6) -amino-2- (4-aminophenyl) benzimidazole (DAPBI), and 50 mol of terephthalic acid chloride, Heat treatment was performed at a heat treatment temperature of 480 ° C. to obtain 1100 dtex, 500 filament aromatic copolyamide fiber.
The obtained aromatic copolyamide fiber had a tensile strength of 24.9 cN / dtex and a tensile modulus of 899 cN / dtex.
得られた繊維１０本を合糸してストランドとし、リング撚糸機を用いて、Ｚ方向に７７回／ｍの下撚りを施し、さらにこの撚糸ストランド３本を合糸してＳ方向に４５回／ｍの上撚りを施して２．９ｍｍ径の繊維ロープを得た。得られた繊維および繊維ロープの特性を表１に示す。 Ten fibers obtained are combined to form a strand, and using a ring twisting machine, a lower twist of 77 times / m is applied in the Z direction, and further, these three twisted strands are combined and 45 times in the S direction. A fiber rope having a diameter of 2.9 mm was obtained by twisting / m. The properties of the obtained fiber and fiber rope are shown in Table 1.
［実施例２〜３］
実施例１において、ジアミンの投入量を表１に示す如く変更した以外は、実施例１と同様に実施して繊維ロープを得た。得られた繊維および繊維ロープの特性を表１に示す。
[Examples 2-3]
A fiber rope was obtained in the same manner as in Example 1 except that the amount of diamine added was changed as shown in Table 1 in Example 1. The properties of the obtained fiber and fiber rope are shown in Table 1.
［比較例１］
補強用繊維として、ポリパラフェニレンテレフタルアミド（ＰＰＴＡ）繊維（帝人トワロン製、商標名Ｔｗａｒｏｎ）を用い、実施例１と同様の方法にて繊維ロープを得た。得られた繊維および繊維ロープの特性を表１に示す。
[Comparative Example 1]
A fiber rope was obtained in the same manner as in Example 1 using polyparaphenylene terephthalamide (PPTA) fiber (manufactured by Teijin Twaron, trade name: Twaron) as the reinforcing fiber. The properties of the obtained fiber and fiber rope are shown in Table 1.
本発明によれば、公知のアラミド繊維を用いた防護衣料に比べ、防護衣料を装着した場合に支障無く動くことができ、軽量でかつ高い耐弾性能を持つ防護衣料が提供されるので、軽量で優れた保護用品、あるいは安全用品等の用途分野に有用である。 According to the present invention, compared to protective clothing using known aramid fibers, it is possible to move without any trouble when wearing protective clothing, and since lightweight protective clothing having high ballistic performance is provided, it is lightweight. It is useful in application fields such as excellent protective products and safety products.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005019487A JP4787508B2 (en) | 2005-01-27 | 2005-01-27 | Fiber rope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005019487A JP4787508B2 (en) | 2005-01-27 | 2005-01-27 | Fiber rope |
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| Publication Number | Publication Date |
|---|---|
| JP2006207066A JP2006207066A (en) | 2006-08-10 |
| JP2006207066A5 JP2006207066A5 (en) | 2007-12-13 |
| JP4787508B2 true JP4787508B2 (en) | 2011-10-05 |
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| JP2005019487A Expired - Fee Related JP4787508B2 (en) | 2005-01-27 | 2005-01-27 | Fiber rope |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4411755A1 (en) * | 1994-04-06 | 1995-10-12 | Hoechst Ag | Prodn. of fibres and film based on aromatic polyamide |
| EP0678539A3 (en) * | 1994-04-06 | 1997-01-15 | Hoechst Ag | Aromatic copolyamides, process for their preparation, moulded articles and their manufacture. |
| JP4114111B2 (en) * | 1997-10-27 | 2008-07-09 | 東レ・デュポン株式会社 | Polyparaphenylene terephthalamide fiber and method for producing the same |
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