JP2001279525A - Polyhexamethylene adipamide yarn and method for producing the same - Google Patents
Polyhexamethylene adipamide yarn and method for producing the sameInfo
- Publication number
- JP2001279525A JP2001279525A JP2000087236A JP2000087236A JP2001279525A JP 2001279525 A JP2001279525 A JP 2001279525A JP 2000087236 A JP2000087236 A JP 2000087236A JP 2000087236 A JP2000087236 A JP 2000087236A JP 2001279525 A JP2001279525 A JP 2001279525A
- Authority
- JP
- Japan
- Prior art keywords
- polyhexamethylene adipamide
- dtex
- fiber
- yarn
- rubber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Tires In General (AREA)
- Artificial Filaments (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ゴム補強用繊維と
して用いた場合、加硫成形品の製品歪みを抑制すると同
時に、使用変形時の製品歪み抑制に対し有用なポリヘキ
サメチレンアジパミド繊維とその製造方法、およびゴム
補強用コードに関するものである。[0001] The present invention relates to a polyhexamethylene adipamide fiber which, when used as a fiber for reinforcing rubber, suppresses product distortion of a vulcanized molded product and is useful for suppressing product distortion during use deformation. And a method of manufacturing the same, and a cord for reinforcing rubber.
【０００２】[0002]
【従来の技術】ポリヘキサメチレンアジパミド繊維は、
強度、耐熱性、柔軟性、接着性等に優れているため、各
種産業資材用用途、例えば、タイヤコード、タイミング
ベルト等のゴム補強用繊維、さらには、エアバッグ用基
布、漁網、スポーツウェアー、縫糸等に広く使用されて
いる。2. Description of the Related Art Polyhexamethylene adipamide fiber is
Because of its excellent strength, heat resistance, flexibility, adhesiveness, etc., it is used for various industrial materials, for example, rubber reinforcing fibers such as tire cords and timing belts, as well as airbag base fabrics, fishing nets, and sportswear. Widely used for sewing thread.
【０００３】ゴム補強用繊維として用いられる場合は、
加硫成型加工工程において、ゴム、ゴム補強用繊維、お
よびその他の素材を用い、成形金型に圧力と温度を加
え、製品形状を成形する。その際、補強用繊維の剛性が
高いと、設計した通りの製品形状が得られ難い。そのた
め補強用繊維の柔軟性、つまり初期モジュラスの低い繊
維が要求されている。一方、使用時においては、補強用
繊維の剛性が低いと、応力や発熱による熱膨張により製
品歪みが発生し、製品機能が低下する。そのため使用時
の補強用繊維の剛性向上が要求されている。つまり、加
工時には初期モジュラスが低く、使用時、つまり加硫後
には初期モジュラスが高い糸が要求されている。[0003] When used as a rubber reinforcing fiber,
In the vulcanization molding process, pressure and temperature are applied to a molding die using rubber, rubber reinforcing fibers, and other materials to form a product shape. At that time, if the rigidity of the reinforcing fiber is high, it is difficult to obtain a product shape as designed. Therefore, the flexibility of the reinforcing fiber, that is, a fiber having a low initial modulus is required. On the other hand, in use, if the rigidity of the reinforcing fiber is low, product distortion occurs due to thermal expansion due to stress or heat generation, and product function is reduced. Therefore, it is required to improve the rigidity of the reinforcing fiber during use. That is, there is a demand for a yarn having a low initial modulus during processing and a high initial modulus during use, that is, after vulcanization.
【０００４】これまで、繊維の柔軟性を向上させる方法
として、例えば、特開昭５３−９０４２０号公報、特開
昭５３−１３４９２２号公報に、単糸フィラメントの繊
度を細くする事により柔軟性を向上させる方法が開示さ
れている。ところが、このような繊度の変更では、耐摩
耗性、耐疲労性等の製品性能の変化、および毛羽等によ
る加工効率の低下という問題があった。Hitherto, as a method for improving the flexibility of a fiber, for example, JP-A-53-90420 and JP-A-53-134922 disclose a method of reducing the fineness of a single filament by increasing the fineness. A method for improving is disclosed. However, such a change in fineness has a problem in that the product performance such as abrasion resistance and fatigue resistance changes, and that the processing efficiency is reduced due to fluff and the like.
【０００５】このため、ポリマー改質により、繊維自体
の柔軟性向上および熱収縮率向上の検討がなされてき
た。例えば、特開平７−１８９０２９号公報には、ポリ
ヘキサメチレンアジパミドにε−カプロラクタムを配合
し重合する事により、ポリヘキサメチレンアジパミド繊
維の柔軟性および熱収縮性を向上させる方法が開示され
ている。しかしながら、充分な柔軟性および収縮性を得
るためには、かなりのポリマー改質が必要であり、その
ため、ポリヘキサメチレンアジパミドの特徴である耐熱
性、耐疲労性等の低下が激しくなる問題が生じる。For this reason, studies have been made to improve the flexibility and heat shrinkage of the fiber itself by modifying the polymer. For example, Japanese Patent Application Laid-Open No. 7-189029 discloses a method for improving the flexibility and heat shrinkability of polyhexamethylene adipamide fiber by blending ε-caprolactam with polyhexamethylene adipamide and polymerizing the mixture. Have been. However, in order to obtain sufficient flexibility and shrinkability, considerable polymer modification is required, and as a result, the heat resistance, fatigue resistance, and the like, which are characteristics of polyhexamethylene adipamide, are severely reduced. Occurs.
【０００６】一方、使用時の繊維モジュラスを上げるた
め、通常、製糸段階での延伸比を上げることにより分子
配向を上げる方法が一般的に知られているが、この方法
では初期モジュラスも高くなってしまうという問題が生
じる。上記のような問題を解決するために、これまで数
多くの提案がなされてきたが、未だ、加硫成型工程にお
ける製品歪みを抑制する為の十分な柔軟性と、使用時の
製品歪みを抑制するための剛性とを同時に満足する繊維
は得られていない。On the other hand, in order to increase the fiber modulus during use, it is generally known to increase the molecular orientation by increasing the draw ratio in the spinning stage, but this method also increases the initial modulus. The problem arises. In order to solve the above problems, many proposals have been made so far, but still have sufficient flexibility to suppress product distortion in the vulcanization molding process, and suppress product distortion during use. Fibers satisfying the required rigidity at the same time have not been obtained.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、加工成型時
には柔軟性が高く、使用時には剛性が高いポリヘキサメ
チレンアジパミド繊維、及びゴム補強用コードを提供す
ることを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a polyhexamethylene adipamide fiber which has high flexibility during processing and molding and has high rigidity during use, and a rubber reinforcing cord.
【０００８】[0008]
【課題を解決するための手段】本発明者は、上記課題を
解決するために鋭意検討の結果、本発明をなすに至っ
た。即ち、本発明は下記の通りである。 （１）蟻酸相対粘度が５０〜１５０であり、かつ、初期
モジュラスが２２〜３４ｃＮ／ｄｔｅｘ、伸度４％時の
強度が０．９〜２．６ｃＮ／ｄｔｅｘの物性を有するポ
リヘキサメチレンアジパミド繊維。Means for Solving the Problems The present inventors have made intensive studies to solve the above-mentioned problems, and as a result, have accomplished the present invention. That is, the present invention is as follows. (1) Polyhexamethylene adipa having a formic acid relative viscosity of 50 to 150, an initial modulus of 22 to 34 cN / dtex, and a physical strength of 0.9 to 2.6 cN / dtex at an elongation of 4%. Mid fiber.
【０００９】（２）ポリヘキサメチレンアジパミドを溶
融紡出し、冷却固化した後、糸条をロール温度６０℃以
上、速度３０００ｍ／分以上で引き取り、直接３．０倍
以下の延伸倍率で熱延伸し、直ちに熱セットしながら巻
き取りを行う事を特徴とする上記１記載のポリヘキサメ
チレンアジパミド繊維の製造方法。 （３）蟻酸相対粘度が５０〜１５０のポリヘキサメチレ
ンアジパミドからなり、かつ、ゴム加硫後に、強度が
３．５ｃＮ／ｄｔｅｘ以上、６．６ｃＮ／ｄｔｅｘ未
満、初期モジュラスが２１〜３５ｃＮ／ｄｔｅｘの物性
を有するゴム補強用コード。(2) Polyhexamethylene adipamide is melt-spun, cooled and solidified, and the yarn is taken up at a roll temperature of 60 ° C. or more and a speed of 3000 m / min or more, and directly heated at a draw ratio of 3.0 times or less. 2. The method for producing a polyhexamethylene adipamide fiber according to the above 1, wherein the fiber is drawn and immediately wound up while being heat-set. (3) It is composed of polyhexamethylene adipamide having a formic acid relative viscosity of 50 to 150, and has a strength of 3.5 cN / dtex or more and less than 6.6 cN / dtex after rubber vulcanization, and an initial modulus of 21 to 35 cN / A rubber reinforcing cord having physical properties of dtex.
【００１０】以下、本発明を詳細に説明する。本発明に
用いられるポリヘキサメチレンアジパミドは、下記の繰
り返し単位を主体とするものである。 [ −（ＣＯ（ＣＨ2 ）4 ＣＯ）（ＮＨ（ＣＨ2 ）6 Ｎ
Ｈ）−] ポリヘキサメチレンアジパミド繊維の耐熱性、耐疲労性
能を低下させない範囲で、ポリヘキサメチレンアジパミ
ドに、他のアミド形成単位を５ｗｔ％以下添加して変性
したポリヘキサメチレンアジパミドも用いる事ができ
る。このようなアミド形成単位としては、セバシン酸、
ドデカン酸等の脂肪酸ジカルボン酸；テレフタル酸、イ
ソフタル酸等の芳香族ジカルボン酸；デカメチレンジア
ミン等の脂肪族ジアミン；メタキシリレンジアミン等の
芳香族ジアミン；ε−カプロン酸等のω−アミノ酸；カ
プロラクタム、ラウリンラクタム等のラクタム類などが
挙げられる。また、上記ポリヘキサメチレンアジパミド
に１０ｗｔ％以下の範囲でポリカプラミド、ポリヘキサ
メチレンセバカミド等、他種のポリアミドを配合したも
のを用いることもできる。Hereinafter, the present invention will be described in detail. The polyhexamethylene adipamide used in the present invention is mainly composed of the following repeating units. [- (CO (CH 2) 4 CO) (NH (CH 2) 6 N
H)-] Polyhexamethylene adipamide modified by adding 5% by weight or less of other amide-forming units to polyhexamethylene adipamide as long as the heat resistance and fatigue resistance of the fiber are not reduced. Pamide can also be used. Such amide-forming units include sebacic acid,
Fatty acid dicarboxylic acids such as dodecanoic acid; aromatic dicarboxylic acids such as terephthalic acid and isophthalic acid; aliphatic diamines such as decamethylenediamine; aromatic diamines such as meta-xylylenediamine; ω-amino acids such as ε-caproic acid; And lactams such as laurin lactam. Further, a mixture of the above polyhexamethylene adipamide and other polyamides such as polycapramid and polyhexamethylene sebacamide in a range of 10 wt% or less can also be used.
【００１１】更に、上記のポリヘキサメチレンアジパミ
ド繊維は、ポリアミドに対して通常用いられる添加剤、
たとえば、酢酸銅、塩化銅、よう化銅、メルカプトベン
ズイミダゾール等の熱安定剤、乳酸マンガン、次亜リン
酸マンガン等の光安定剤、リン酸、フェニルフォスフォ
ン酸、ピロリン酸ナトリウム等の増粘剤、二酸化チタ
ン、二酸化ケイ素、カオリン等の艶消剤、エチレンビス
ステアリルアミド、ステアリン酸カルシウム等の滑剤、
可塑剤等を含んでいても良い。Further, the above-mentioned polyhexamethylene adipamide fiber is an additive generally used for polyamide,
For example, heat stabilizers such as copper acetate, copper chloride, copper iodide, mercaptobenzimidazole, light stabilizers such as manganese lactate and manganese hypophosphite, and thickeners such as phosphoric acid, phenylphosphonic acid, and sodium pyrophosphate. Agents, titanium dioxide, silicon dioxide, matting agents such as kaolin, ethylenebisstearylamide, lubricants such as calcium stearate,
It may contain a plasticizer or the like.
【００１２】本発明に用いられるポリヘキサメチレンア
ジパミドは、蟻酸相対粘度が５０〜１５０である。蟻酸
相対粘度が５０未満の場合は、強度の高い原糸を製造す
るためには、それだけ高延伸を行う必要があり、高延伸
による毛羽が発生しやすくなり、加工工程での性能が低
下するのみならず、さらには初期モジュラスが増大す
る。蟻酸相対粘度を上げると、吐出ポリマーの溶解粘度
が上昇し、その結果ポリマー吐出の均一性が低下する傾
向があり、そのため、溶融温度を高くしたり、加熱筒を
付けたりして溶融粘度を抑制する必要がある。従って、
蟻酸相対粘度が１５０を越えると、適性な吐出溶融粘度
を得るためにはさらに溶融温度を高くする必要があり、
その結果、吐出ポリマーの劣化による生産収率の低下が
生じるという現象がみられる。The polyhexamethylene adipamide used in the present invention has a formic acid relative viscosity of 50 to 150. When the formic acid relative viscosity is less than 50, in order to produce a high-strength raw yarn, it is necessary to perform high stretching accordingly, fuzz due to high stretching is easily generated, and the performance in the processing step is reduced only. In addition, the initial modulus increases. Increasing the relative viscosity of formic acid increases the melt viscosity of the discharged polymer, which tends to reduce the uniformity of the polymer discharge. For this reason, the melt viscosity is suppressed by increasing the melting temperature or attaching a heating cylinder. There is a need to. Therefore,
If the formic acid relative viscosity exceeds 150, it is necessary to further raise the melting temperature in order to obtain an appropriate discharge melt viscosity,
As a result, a phenomenon occurs in which the production yield is reduced due to the deterioration of the discharged polymer.
【００１３】なお、ここでいう蟻酸相対粘度とは、９０
％蟻酸のポリマー濃度８．４ｗｔ％溶液の２５℃におけ
る溶液相対粘度である。本発明のポリヘキサメチレンア
ジパミド繊維は、初期モジュラスが２２〜３４ｃＮ／ｄ
ｔｅｘの範囲である。初期モジュラスが３４ｃＮ／ｄｔ
ｅｘより大きくても製品成形は可能であるが、加工成形
時の製品欠点発生の主因の一つになると考えられてい
る。また、初期モジュラスが２２ｃＮ／ｄｔｅｘ未満の
場合は、補強材としての機能に影響を与え、商品性能自
体の低下を生じる。The relative viscosity of formic acid referred to here is 90
The solution relative viscosity at 25 ° C. of a 8.4 wt% polymer solution of% formic acid. The polyhexamethylene adipamide fiber of the present invention has an initial modulus of 22 to 34 cN / d.
tex range. Initial modulus is 34 cN / dt
Although it is possible to form a product even if it is larger than ex, it is considered to be one of the main causes of the occurrence of product defects during processing and forming. Further, when the initial modulus is less than 22 cN / dtex, the function as a reinforcing material is affected, and the performance of the product itself is reduced.
【００１４】また、伸度４％時の強度は０．９〜２．６
ｃＮ／ｄｔｅｘの範囲である。ゴム補強用コードとして
用いる場合、通常、ゴム加硫成型時の圧力により補強材
は１〜５％程度伸張される。そのため、加硫後または使
用後の補強材の剛性は、伸度４％時の強度に依存してい
る。伸度４％時の強度が０．９ｃＮ／ｄｔｅｘ未満で
は、使用時の製品形状の寸法安定性に問題が発生する。
また、伸度４％時の強度が２．６ｃＮ／ｄｔｅｘを越え
ると、初期モジュラスが高くなりすぎ、加硫成型時の製
品歪みという問題が発生する。The strength at an elongation of 4% is 0.9 to 2.6.
It is in the range of cN / dtex. When used as a rubber reinforcing cord, the reinforcing material is usually stretched by about 1 to 5% by pressure during rubber vulcanization molding. Therefore, the rigidity of the reinforcing material after vulcanization or after use depends on the strength at an elongation of 4%. If the strength at an elongation of 4% is less than 0.9 cN / dtex, a problem occurs in the dimensional stability of the product shape during use.
On the other hand, if the strength at an elongation of 4% exceeds 2.6 cN / dtex, the initial modulus becomes too high, causing a problem of product distortion during vulcanization molding.
【００１５】次に、本発明のポリヘキサメチレンアジパ
ミド繊維を製造する方法について説明する。装置として
は、例えば図１に示すような紡糸装置を用いることがで
きる。引き取りロール（１ゴデットロール）にて走行糸
条を引き取り、続いて、直接延伸ロール（２，３，４ゴ
デットロール）にて延伸熱処理を行う。引き取り速度は
３０００ｍ／分以上である。ポリヘキサメチレンアジパ
ミドは、配向による結晶化が進みやすく、この結晶性が
伸度４％時の繊維の強度物性に関与している。引き取り
速度が３０００ｍ／分未満の場合は、引き取りロール前
の配向度が低くなり、繊維の分子配向による結晶化が不
充分となり、目標とする伸度４％時の強度が得られな
い。なお、引き取り速度の上限は、紡糸装置の性能によ
り自ずから決まる。Next, a method for producing the polyhexamethylene adipamide fiber of the present invention will be described. As the apparatus, for example, a spinning apparatus as shown in FIG. 1 can be used. The running yarn is taken up by a take-up roll (1 godet roll), and subsequently, a drawing heat treatment is performed directly by a draw roll (2, 3, 4 godet rolls). The take-off speed is 3000 m / min or more. Polyhexamethylene adipamide is apt to undergo crystallization due to orientation, and this crystallinity is involved in the strength physical properties of the fiber when the elongation is 4%. When the take-off speed is less than 3000 m / min, the degree of orientation before the take-off roll is low, and the crystallization due to the molecular orientation of the fiber becomes insufficient, and the target strength at an elongation of 4% cannot be obtained. The upper limit of the take-up speed is naturally determined by the performance of the spinning device.
【００１６】引き取りロール温度は６０℃以上である。
上述したように、本発明においては、引き取りロール前
に配向による結晶化を促進させているため、このまま熱
延伸すると毛羽が発生し生産効率が低下する。そのた
め、延伸前に、配向を緩和させる必要がある。引き取り
ロール温度が６０℃未満では、延伸工程において均一な
延伸ができず、均一糸条の製造および生産収率が満足に
達成できないという問題が生じる。ロール温度の上限
は、延伸性及び得られる繊維の物性を考慮すると、８０
℃以下が好ましい。[0016] The take-up roll temperature is 60 ° C or higher.
As described above, in the present invention, crystallization due to orientation is promoted before the take-off roll. Therefore, if hot stretching is performed as it is, fluff is generated and production efficiency is reduced. Therefore, it is necessary to relax the orientation before stretching. If the take-up roll temperature is lower than 60 ° C., uniform stretching cannot be performed in the stretching step, and the production and production yield of uniform yarn cannot be achieved satisfactorily. The upper limit of the roll temperature is 80 in consideration of stretchability and physical properties of the obtained fiber.
C. or less is preferred.
【００１７】延伸工程における延伸倍率は３．０倍以下
である。延伸倍率が３．０倍より大きいと、繊維の非晶
および結晶部トータルの配向度が上がり、目標とする初
期モジュラスより大きくなる。本発明では、熱延伸後、
直ちに熱セットしながら巻き取りを行う。熱セット温度
は、２００℃以上、ポリマー融点以下であることが好ま
しい。熱セットロール温度が、２００℃未満の場合、巻
き取り時に繊維の放縮により糸条巻取時に締まりが発生
し、生産安定性が低下する傾向がある。The stretching ratio in the stretching step is 3.0 times or less. When the draw ratio is larger than 3.0 times, the total degree of orientation of the amorphous and crystal parts of the fiber increases, and becomes larger than the target initial modulus. In the present invention, after hot stretching,
Immediately heat up and wind up. The heat setting temperature is preferably 200 ° C. or higher and the polymer melting point or lower. When the temperature of the heat set roll is less than 200 ° C., the fibers tend to shrink at the time of winding due to shrinkage of the fibers, and the production stability tends to decrease.
【００１８】本発明のポリヘキサメチレンアジパミド繊
維は、ゴム製品、例えば自動車タイヤ等に埋め込んで補
強するためのゴム補強用コードとして有用である。コー
ドとは、ポリヘキサメチレンアジパミド繊維１本ずつに
下撚りを加え、さらに、それを２または３本合わせて上
撚りを施したものである。撚数とは、コード１ｍ当たり
の撚りの回数であり、本発明においては特に限定される
ものではない。なお、撚り方向は、Ｓ方向でもＺ方向で
もよい。The polyhexamethylene adipamide fiber of the present invention is useful as a rubber reinforcing cord for embedding and reinforcing rubber products such as automobile tires. The cord is obtained by adding a bottom twist to each of the polyhexamethylene adipamide fibers and then twisting two or three of them together. The number of twists is the number of twists per meter of cord, and is not particularly limited in the present invention. The twist direction may be the S direction or the Z direction.
【００１９】ゴム加硫とは、コードをレゾルシン−ホル
ムアルデヒド−ラテックス液に含浸させ、張力を加えな
がら熱処理をおこなった後、該熱処理コードをゴム中に
埋め込み、圧力と温度を加えてゴムを加硫する工程であ
る。加硫後のコードの初期モジュラスは２１〜３５ｃＮ
／ｄｔｅｘの範囲である。２１ｃＮ／ｄｔｅｘ未満で
は、製品の補強材機能が低下する。また、３５ｃＮ／ｄ
ｔｅｘを越えると、加工成形時の製品欠点発生の主因の
一つとなる。Rubber vulcanization means that a cord is impregnated with a resorcinol-formaldehyde-latex solution, heat-treated while applying tension, the heat-treated cord is embedded in rubber, and pressure and temperature are applied to vulcanize the rubber. This is the step of performing The initial modulus of the cord after vulcanization is 21 to 35 cN
/ Dtex. If it is less than 21 cN / dtex, the reinforcing material function of the product is reduced. In addition, 35 cN / d
If it exceeds tex, it becomes one of the main causes of the occurrence of product defects during processing and molding.
【００２０】加硫後のコードの強度は３．５ｃＮ／ｄｔ
ｅｘ以上、６．６ｃＮ／ｄｔｅｘ未満の範囲である。
３．５ｃＮ／ｄｔｅｘより小さいと、補強材機能に影響
を与え製品性能自体の低下を生じる。また、６．６ｃＮ
／ｄｔｅｘ以上では、初期モジュラスが大きくなり、加
硫成型工程における製品歪みを抑制する為の柔軟性が低
下する。The strength of the cord after vulcanization is 3.5 cN / dt.
ex or more and less than 6.6 cN / dtex.
If it is smaller than 3.5 cN / dtex, the function of the reinforcing material is affected and the product performance itself is reduced. In addition, 6.6cN
At / dtex or more, the initial modulus increases, and the flexibility for suppressing product distortion in the vulcanization molding process decreases.
【００２１】[0021]
【発明の実施の形態】以下、実施例によって本発明を具
体的に説明するが、本発明はこれらの実施例に限定され
るものではない。なお、物性値は下記の方法により測定
した。また、測定に供する試料の調製は次のように行っ
た。ポリヘキサメチレンアジパミド繊維の原糸１本ずつ
に撚を加え、下撚りコードを作製する。続いて該下撚り
コード２本を合わせて上撚りを加え生コードを作った。
この生コードを、３オーブンホットストレッチ装置にて
レゾルシン−ホルムアルデヒド−ラテックス液の処理を
実施し、処理コードを得た。この処理コードをゴム中に
埋め込み１４０℃×４０分の加硫条件で加硫し、グッド
イヤーチューブ試験に使われるチューブ（ＪＩＳ Ｌ−
１０１７３に準じた) を作成した。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described specifically with reference to examples, but the present invention is not limited to these examples. In addition, the physical property value was measured by the following method. Preparation of a sample to be used for measurement was performed as follows. Twist is added to each of the original yarns of polyhexamethylene adipamide fiber to prepare a ply-twisted cord. Subsequently, the two twisted cords were combined and twisted to produce a raw cord.
This raw cord was treated with a resorcinol-formaldehyde-latex liquid using a three-oven hot stretch apparatus to obtain a treated cord. This treatment cord is embedded in rubber and vulcanized under vulcanization conditions of 140 ° C. for 40 minutes, and a tube (JIS L-
10173).
【００２２】（１) 強度、伸度、初期モジュラス、伸度
４％時の強度 島津製作所製オートグラフＳ−１００Ｃを用い、８０回
／ｍの撚りを加えた糸長２５ｃｍの糸条に対し、降下速
度３０ｃｍ／分にて測定した。 （２) 加硫後のコードの強度、初期モジュラス 上記の加硫されたチューブからコードを取り出し、該コ
ードの強伸度物性を上記方法にて測定した。(1) Strength, Elongation, Initial Modulus, Strength at Elongation of 4% Using an Autograph S-100C manufactured by Shimadzu Corporation, a yarn having a length of 25 cm with a twist of 80 turns / m was applied. The measurement was performed at a descent speed of 30 cm / min. (2) Strength and Initial Modulus of Cord after Vulcanization The cord was taken out of the vulcanized tube, and the physical properties of the cord were measured by the above method.
【００２３】（３) 曲げ変形量 上記により作成された加硫チューブを、１３０℃のオー
ブン中で水平に設置し、チューブの端から１０ｍｍの箇
所に５００ｇの荷重をかけ、そのときのチューブの曲げ
変形量（ｍｍ）を測定した。曲げ変形量は使用時の形状
安定性の尺度とみなせる。(3) Amount of bending deformation The vulcanized tube prepared as described above was placed horizontally in an oven at 130 ° C., and a load of 500 g was applied to a position 10 mm from the end of the tube, and the tube was bent at that time. The deformation (mm) was measured. The amount of bending deformation can be regarded as a measure of shape stability during use.
【００２４】（４）加硫成形性 上記のチューブを加硫する際、生チューブ外形より１．
２倍大きい金型にて、チューブ内部より所定の空気圧を
加えて成形し、成形後のチューブの形状を観察して評価
した。評価結果は、きわめて良好：◎、良好：○、不
良：×、で表した。(4) Vulcanization Formability When vulcanizing the above-mentioned tube, the vulcanization is performed according to 1.
Using a mold twice as large, a predetermined air pressure was applied from the inside of the tube to mold, and the shape of the molded tube was observed and evaluated. The evaluation results were represented by: very good: 、, good: 、, poor: x.
【００２５】〔実施例１〜３、比較例１〜４〕常法の重
合方法にて、蟻酸相対粘度８０のポリヘキサメチレンア
ジパミドを得た後、図１に示すエクストルーダー型紡糸
機で紡出し、直ちに表１に示す条件で延伸、巻き取りを
行った。得られた繊維および加硫後のコードの物性を表
２に示し、ゴム製品を補強した場合の曲げ変形量、加硫
成形性を表３に示す。Examples 1-3 and Comparative Examples 1-4 After obtaining polyhexamethylene adipamide having a formic acid relative viscosity of 80 by a conventional polymerization method, the extruder type spinning machine shown in FIG. 1 was used. It was spun and immediately stretched and wound under the conditions shown in Table 1. Table 2 shows the physical properties of the obtained fiber and the cord after vulcanization, and Table 3 shows the amount of bending deformation and vulcanization moldability when the rubber product was reinforced.
【００２６】表３に示すように、本発明のポリヘキサメ
チレンアジパミド繊維のゴム補強用コードを用いた場合
は、加硫成形時の形状安定性がよく、高温時の製品形状
安定性が良い（曲げ変形量が少ない）。As shown in Table 3, when the rubber reinforcing cord of the polyhexamethylene adipamide fiber of the present invention was used, the shape stability at the time of vulcanization molding was good, and the product shape stability at high temperature was low. Good (less bending deformation).
【００２７】[0027]
【表１】 [Table 1]
【００２８】[0028]
【表２】 [Table 2]
【００２９】[0029]
【表３】 [Table 3]
【００３０】[0030]
【発明の効果】本発明のポリヘキサメチレンアジパミド
繊維は、初期モジュラスが低く、伸度４％時の強度が高
いので、タイヤ、ベルト等のゴム補強用コードとして用
いた場合、加工成型時における優れた加工容易性を有
し、かつ使用変形時の優れた形状安定性を有する製品と
なる。The polyhexamethylene adipamide fiber of the present invention has a low initial modulus and a high strength at an elongation of 4%. It is a product having excellent workability in the above and having excellent shape stability at the time of use deformation.
【図１】本発明において用いられる紡糸機および延伸機
の一例を示す図である。FIG. 1 is a diagram showing an example of a spinning machine and a stretching machine used in the present invention.
１…引き取りロール（１ゴデットロール：１ＧＤ） ２…２ゴデットロール（２ＧＤ） ３…３ゴデットロール（３ＧＤ） ４…４ゴデットロール（４ＧＤ） ５…巻取り機 ６…スピンヘッド ７…エクストルーダー ８…糸条 DESCRIPTION OF SYMBOLS 1 ... Take-up roll (1 godet roll: 1GD) 2 ... 2 godet roll (2GD) 3 ... 3 godet roll (3GD) 4 ... 4 godet roll (4GD) 5 ... Winding machine 6 ... Spin head 7 ... Extruder 8 ... Thread
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） // Ｂ６０Ｃ 9/00 Ｂ６０Ｃ 9/00 Ｃ Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat II (reference) // B60C 9/00 B60C 9/00 C
Claims (3)
つ、初期モジュラスが２２〜３４ｃＮ／ｄｔｅｘ、伸度
４％時の強度が０．９〜２．６ｃＮ／ｄｔｅｘの物性を
有するポリヘキサメチレンアジパミド繊維。1. Polyhexamethylene having a formic acid relative viscosity of 50 to 150, an initial modulus of 22 to 34 cN / dtex, and a physical strength of 0.9 to 2.6 cN / dtex at an elongation of 4%. Adipamide fiber.
出し、冷却固化した後、糸条をロール温度６０℃以上、
速度３０００ｍ／分以上で引き取り、直接３．０倍以下
の延伸倍率で熱延伸し、直ちに熱セットしながら巻き取
りを行う事を特徴とする請求項１記載のポリヘキサメチ
レンアジパミド繊維の製造方法。2. A polyhexamethylene adipamide is melt-spun and solidified by cooling.
2. The production of polyhexamethylene adipamide fiber according to claim 1, wherein the fiber is drawn at a speed of 3000 m / min or more, directly hot-drawn at a draw ratio of 3.0 times or less, and immediately wound up while being heat-set. Method.
サメチレンアジパミドからなり、かつ、ゴム加硫後に、
強度が３．５ｃＮ／ｄｔｅｘ以上、６．６ｃＮ／ｄｔｅ
ｘ未満、初期モジュラスが２１〜３５ｃＮ／ｄｔｅｘの
物性を有するゴム補強用コード。3. A polyhexamethylene adipamide having a formic acid relative viscosity of 50 to 150, and after vulcanization of rubber,
Strength is 3.5 cN / dtex or more, 6.6 cN / dte
A rubber reinforcing cord having physical properties of less than x and an initial modulus of 21 to 35 cN / dtex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000087236A JP2001279525A (en) | 2000-03-27 | 2000-03-27 | Polyhexamethylene adipamide yarn and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000087236A JP2001279525A (en) | 2000-03-27 | 2000-03-27 | Polyhexamethylene adipamide yarn and method for producing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001279525A true JP2001279525A (en) | 2001-10-10 |
Family
ID=18603275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000087236A Pending JP2001279525A (en) | 2000-03-27 | 2000-03-27 | Polyhexamethylene adipamide yarn and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001279525A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017213598A1 (en) * | 2016-06-09 | 2017-12-14 | Kordsa Teknik Tekstil Anonim Sirketi | High modulus nylon 6.6 cords |
| WO2017213600A1 (en) * | 2016-06-09 | 2017-12-14 | Kordsa Teknik Tekstil Anonim Sirketi | High modulus single twisted nylon 6,6 yarns |
| JP2023505267A (en) * | 2020-01-15 | 2023-02-08 | 上海凱賽生物技術股分有限公司 | Polyamide 5X short fiber, and its production method and application |
-
2000
- 2000-03-27 JP JP2000087236A patent/JP2001279525A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017213598A1 (en) * | 2016-06-09 | 2017-12-14 | Kordsa Teknik Tekstil Anonim Sirketi | High modulus nylon 6.6 cords |
| WO2017213600A1 (en) * | 2016-06-09 | 2017-12-14 | Kordsa Teknik Tekstil Anonim Sirketi | High modulus single twisted nylon 6,6 yarns |
| CN107949666A (en) * | 2016-06-09 | 2018-04-20 | 科德沙技术纺织品股份公司 | High-modulus list twists nylon 6,6 yarn |
| US10214838B2 (en) | 2016-06-09 | 2019-02-26 | Kordsa Teknik Tekstil Anonim Sirketi | High modulus single twisted nylon 6.6 yarns |
| JP2019517627A (en) * | 2016-06-09 | 2019-06-24 | コルドサ・テクニク・テクスティル・アノニム・シルケティＫｏｒｄｓａ Ｔｅｋｎｉｋ Ｔｅｋｓｔｉｌ Ａｎｏｎｉｍ Ｓｉｒｋｅｔｉ | High modulus one-twist nylon 6.6 yarn |
| JP2019518877A (en) * | 2016-06-09 | 2019-07-04 | コルドサ・テクニク・テクスティル・アノニム・シルケティＫｏｒｄｓａ Ｔｅｋｎｉｋ Ｔｅｋｓｔｉｌ Ａｎｏｎｉｍ Ｓｉｒｋｅｔｉ | High modulus nylon 6.6 cord |
| US10364515B2 (en) | 2016-06-09 | 2019-07-30 | Kordsa Teknik Tekstil Anonim Sirketi | High modulus nylon 6.6 cords |
| RU2716687C2 (en) * | 2016-06-09 | 2020-03-13 | Кордса Текник Текстил Аноним Ширкети | High-modulus cords of nylon 6.6 |
| JP2023505267A (en) * | 2020-01-15 | 2023-02-08 | 上海凱賽生物技術股分有限公司 | Polyamide 5X short fiber, and its production method and application |
| JP7485764B2 (en) | 2020-01-15 | 2024-05-16 | 上海凱賽生物技術股分有限公司 | Polyamide 5X short fiber, its manufacturing method and application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6340375B2 (en) | Polyamide multifilament fiber and tire cord including the fiber | |
| CA1314673C (en) | High-tenacity conjugated fiber and process for preparation thereof | |
| JP5641931B2 (en) | Polyethylene terephthalate drawn yarn, polyethylene terephthalate tire cord, manufacturing method thereof, and tire including the same | |
| US9359696B2 (en) | Method for manufacturing poly(ethyleneterephthalate) drawn fiber, poly(ethyleneterephthalate) drawn fiber and tire-cord | |
| JP2001279525A (en) | Polyhexamethylene adipamide yarn and method for producing the same | |
| JP5087949B2 (en) | Polyamide fiber | |
| JP2023548124A (en) | A strength member comprising at least one rubber-coated first yarn for an elastomeric product, in particular a vehicle tire, a method for producing a rubber-coated strength member, and at least one rubber-coated first yarn. Vehicle tires with strength members | |
| JP4515919B2 (en) | Manufacturing method of polyester fiber for rubber reinforcement | |
| KR101878780B1 (en) | A Hybrid Dipped Cord Having Excellent Fatigue Resistance and Radial Tire Using the Same | |
| KR101878781B1 (en) | An Excellent Fatigue Resistance Tire Cord using Nylon 6,6 or Nylon 6 and Aramid, and Radial Tires Produced by the Same | |
| JP2839817B2 (en) | Manufacturing method of polyester fiber with excellent thermal dimensional stability | |
| JP3281112B2 (en) | Manufacturing method of polyamide fiber | |
| JPS599209A (en) | High-tenacity polyhexamethylene adipamide fiber | |
| JP4253049B2 (en) | Heat-resistant polyamide fiber and method for producing the same | |
| KR102241107B1 (en) | Cap ply cord and manufacturing method of the same | |
| JP3281111B2 (en) | Method for producing polyamide fiber | |
| JP6510293B2 (en) | Pneumatic tire | |
| KR101849196B1 (en) | Pneumatic tire | |
| JP6588259B2 (en) | Polyamide fiber for transmission belt, and cord, woven fabric, and transmission belt using the same | |
| KR101878779B1 (en) | A Hybrid Dipped Cord Having Excellent Fatigue Resistance and Radial Tire Using the Same | |
| KR101838490B1 (en) | A High Tenacity Tire Cord using Polyethyleneterephthalate and Aramid, and Radial Tires Produced by the Same | |
| TW200535B (en) | ||
| CN114207200A (en) | Polyamide composite fiber and processed yarn | |
| JPH0258362B2 (en) | ||
| KR910004458B1 (en) | High-tenacity conjugated fiber and process for preparation thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20040109 |
|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20070301 |
|
| A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A711 Effective date: 20070308 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20070308 |
|
| A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A711 Effective date: 20090410 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20090618 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20090623 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20091020 |