JPS61166838A - Bonding of aromatic polyamide fiber and rubber compound - Google Patents
Bonding of aromatic polyamide fiber and rubber compoundInfo
- Publication number
- JPS61166838A JPS61166838A JP16741184A JP16741184A JPS61166838A JP S61166838 A JPS61166838 A JP S61166838A JP 16741184 A JP16741184 A JP 16741184A JP 16741184 A JP16741184 A JP 16741184A JP S61166838 A JPS61166838 A JP S61166838A
- Authority
- JP
- Japan
- Prior art keywords
- aromatic polyamide
- rubber
- fibers
- treated
- polyamide fibers
- 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.)
- Granted
Links
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Reinforced Plastic Materials (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は芳香族ポリアミド繊維とゴム配合物との接着方
法に係り、詳しくは芳香族ポリアミド繊維とゴム配合物
の複合体における芳香族ポリアミド繊維の屈曲安定性、
接着性及び繊維フィラメントの結束性に優れた芳香族ポ
リアミド繊維とゴム配合物との接着方法に関する。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for adhering aromatic polyamide fibers and a rubber compound, and more specifically, the present invention relates to a method for bonding aromatic polyamide fibers and a rubber compound. flexural stability,
This invention relates to a method of adhering aromatic polyamide fibers and a rubber compound, which have excellent adhesive properties and binding properties of fiber filaments.
（従来の技術）
一般に、ゴムホース、伝動ベルト、コンベヤベルト、タ
イヤ等の工業用ゴム製品は、ゴム補強用の繊維材料を用
いて補強されているが、最近、かかる繊維材料として工
業用ゴム製品の性能向上のため、ポリアミド繊維、ポリ
エステル繊維などより諸物性に優れた芳香族ポリアミド
繊維（例えば商品名ケブラー）が広く用いられる様にな
った。(Prior Art) Generally, industrial rubber products such as rubber hoses, power transmission belts, conveyor belts, and tires are reinforced using fiber materials for rubber reinforcement. In order to improve performance, aromatic polyamide fibers (eg, Kevlar, trade name), which have better physical properties than polyamide fibers, polyester fibers, etc., have come to be widely used.
ところが、この種、芳香族ポリアミド繊維は、高強度、
高モジュラスの有機繊維で、良好な熱的安定性と高温及
び高湿度下における強度及びモジュラスの保持性を有し
、熱及び湯中の寸法安定性が優れているが、反面、ゴム
配合物との接着性が乏しく、又、複合体にした場合の屈
曲疲労安定性が乏しいという欠点を有している。However, this type of aromatic polyamide fiber has high strength and
It is a high modulus organic fiber with good thermal stability, strength and modulus retention under high temperature and high humidity, and excellent dimensional stability in heat and hot water. It has the drawbacks of poor adhesion and poor bending fatigue stability when made into a composite.
また特に、該繊維コードのカット面が露出するカットエ
ツジタイプの■ベルト、Ｖリブドベルト及び歯付ベルト
では、そのカット面から、該繊維フィラメントが飛び出
す（以下ホツレという）という問題も発生している。In particular, in cut edge type belts, V-ribbed belts, and toothed belts in which the cut surfaces of the fiber cords are exposed, there is a problem in that the fiber filaments jump out from the cut surfaces (hereinafter referred to as fraying).
そこで、従来からそれらの改善を図るべく、種々の方法
が各観点から研究されて来た。Therefore, various methods have been studied from various viewpoints in order to improve these problems.
即ち９．かかる改善のための従来法としては、」）
レゾルシン−ホルマリン−ゴムラテックス接着液（以下
ＲＦＬ液という、）で処理する方法
ｌｉ） エポキシ又はイソシアネート化合物で前処理
を行った後、ＲＦＬ液で処理する方法等があるが、しか
し前者の方法では屈曲疲労安定性は良いが、接着性が劣
り、一方、後者の方法では接着性は良好であるが処理繊
維が固くなり、屈曲疲労安定性が劣る等、夫々欠点があ
り、何れも未だ必ずしも充分満足されるに至っていない
。That is, 9. Conventional methods for such improvement include
There is a method of treating with a resorcinol-formalin-rubber latex adhesive liquid (hereinafter referred to as RFL liquid).There is a method of pre-treating with an epoxy or isocyanate compound and then treating with an RFL liquid. Although the fatigue stability is good, the adhesion is poor, while the latter method has good adhesion but the treated fibers become stiff, and the bending fatigue stability is poor. It has not yet been achieved.
本発明者等も、かねてより上記の如き実情に対処し、そ
れらの改善に努め、さきに芳香族ポリアミド繊維を少な
くとも１個以上のエポキシ基を有するエポキシ化合物と
液伏ゴムの混合溶液で前処理した後ＲＦＬ液で処理し、
しかる後、これを未加硫ゴムと密着加硫せしめる接着方
法を提案した。The inventors of the present invention have been dealing with the above-mentioned circumstances and making efforts to improve them, and have first pre-treated aromatic polyamide fibers with a mixed solution of an epoxy compound having at least one epoxy group and a liquid-liquid rubber. After that, it is treated with RFL liquid,
After that, we proposed an adhesion method to vulcanize this material in close contact with unvulcanized rubber.
この方法はそれにより従来法に比べ屈曲疲労安定性及び
ホツレを著しく改善したが、しかし、なお接着性がやや
劣っている難があり、更に検討の余地が残されていた。Although this method significantly improved the bending fatigue stability and fraying compared to the conventional method, it still had the problem of slightly inferior adhesion, and there remained room for further study.
（発明が解決しようとする問題点）
本発明はこのような問題点を改善し、芳香族ポリアミド
繊維とゴム組成物から構成される複合体の屈曲疲労安定
性及びホッレを改善するこ ゛とはもちろん、前記両
者の接着力を向上させることを目的としている。(Problems to be Solved by the Invention) The present invention aims to improve the above-mentioned problems and improve the bending fatigue stability and hole resistance of a composite made of aromatic polyamide fibers and a rubber composition. Of course, the purpose is to improve the adhesive strength between the two.
（発明を解決するための手段）
即ち、本発明の特徴とするところは２つあり、その１つ
は下１然りのかかったもしくは引き揃えられた芳香族ポ
リアミド繊維をゴム糊又はレゾルシン−ホルマリン−ラ
テックス溶液に浸漬し乾燥せしめた後、上記処理済みの
芳香族ポリアミド繊維を複数本集めて上撚りをかけた後
、これを未加硫ゴムと密着加硫せしめる芳香族ポリアミ
ド繊維とゴム配合物との接着方法にあり、他の１つは下
撚りのかかったもしくは引き揃えられた芳香族ポリアミ
ド繊維をゴム糊又はレゾルシン−ホルマリン−ラテック
ス溶液に浸漬し乾燥せしめた後、上記処理済みの芳香族
ポリアミド繊維を複数本集めて上撚りをかけ、更に上記
ゴム糊又はレゾルシン−ホルマリン−ラテックス溶液に
浸漬し乾燥した後、これを未加硫ゴムと密着加硫せしめ
る芳香族ポリアミド繊維とゴム配合物との接着方法にあ
る。(Means for Solving the Invention) That is, there are two features of the present invention, one of which is that the aromatic polyamide fibers that are hung or aligned in the lower part are coated with rubber glue or resorcinol-formalin. - Aromatic polyamide fiber and rubber compound that is immersed in a latex solution and dried, then collects a plurality of the above-treated aromatic polyamide fibers and twists them together, and then vulcanizes the fibers in close contact with unvulcanized rubber. The other method involves immersing first-twisted or aligned aromatic polyamide fibers in rubber glue or a resorcinol-formalin-latex solution and drying them, then attaching them to the treated aromatic polyamide fibers. Aromatic polyamide fibers and rubber compound in which a plurality of polyamide fibers are collected and twisted, further immersed in the above-mentioned rubber paste or resorcinol-formalin-latex solution, dried, and then vulcanized in close contact with unvulcanized rubber. The method of adhesion is as follows.
即ち、本発明の接着方法では予め芳香族ポリアミド繊維
を接着処理し、これを数本集めて上撚りすることによっ
て得られた繊維コードの表面にはまんべんなく接着剤が
塗付された状態になり、繊維コード間の結束力が高まる
と共にフィラメントのフィブリル化を防止することがで
きる。そして、このようにして得られたコードを更に接
着処理すれば、コード間の結束力は一層高まり、本発明
の目的をより一層高めることができる。That is, in the bonding method of the present invention, aromatic polyamide fibers are pre-adhesively treated, several fibers are collected and twisted, so that the surface of the resulting fiber cord is evenly coated with adhesive, The binding force between the fiber cords is increased and fibrillation of the filaments can be prevented. If the cords thus obtained are further subjected to adhesive treatment, the binding force between the cords will further increase, and the object of the present invention can be further enhanced.
本発明において使用する芳香族ポリアミド繊維とは、繊
維状材料が、ポリ−ｐ又はｍ−ベンズアミド又は、ポリ
−ｐ−フェニレンテレフタルアミド、ポリ−ｍ−フェニ
レンイソフタルアミド繊維であるものをいい、又、被着
体として用いるゴム配合物としては、ＳＢＲ，ＥＰＴ。The aromatic polyamide fiber used in the present invention refers to one in which the fibrous material is poly-p or m-benzamide, poly-p-phenylene terephthalamide, or poly-m-phenylene isophthalamide fiber, and Rubber compounds used as adherends include SBR and EPT.
Ｉ Ｉ Ｒ，ＣＲ，、ＮＲ等の単独あるいはこれらのブ
レンド物が含まれるが、そのうちＣＲ配合物の単独又は
これとのブレンド物は最も好ましい配合である。I I R, CR, NR, etc., alone or in a blend thereof are included, and among these, a CR compound alone or a blend thereof is the most preferable compound.
又、前記本発明に使用するゴム糊は、ＳＢＲ１ＥＰＴ、
Ｉ ＩＲ，ＣＲ，ＮＲ等の単独あるいはこれらのブレン
ド物を溶剤に溶かしたものであり、前記ゴム糊の中にイ
ソシアネート化合物、エポキシ化合物等の接着付与剤を
添加しても良い。次にこのゴム糊に前記繊維を０．１〜
０．５分間浸漬し、１２０℃〜２００℃で熱処理をする
。Further, the rubber glue used in the present invention is SBR1EPT,
I IR, CR, NR, etc. alone or a blend thereof may be dissolved in a solvent, and an adhesion promoter such as an isocyanate compound or an epoxy compound may be added to the rubber glue. Next, add 0.1~
Immerse for 0.5 minutes and heat treat at 120°C to 200°C.
又、前記ゴム糊のかわりにレゾルシン−ホルマリン−ゴ
ムラテックス混合液（ＲＦＬ液）を使用する場合は、該
繊維をこのＲＦＬ液に０．１〜０．５分間浸漬し、 １
５０℃〜２３０℃で熱処理を行う。In addition, when using a resorcinol-formalin-rubber latex mixture (RFL liquid) instead of the rubber glue, the fibers are immersed in this RFL liquid for 0.1 to 0.5 minutes, and 1
Heat treatment is performed at 50°C to 230°C.
なおここで使用するＲＦＬ液は、レゾルシンとホルマリ
ンのモル比がｔ：Ｏ，Ｓ〜３にすることが接着力の面で
好適である。そして、上記ゴムラテックスは通常、合成
ゴムラテックスであり、この合成ゴムラテックスはクロ
ロブレンゴムラテックス及びスチレン−ブタジェン−ビ
ニルピリジンゴムラテックスを云い、単独又は混合して
使用する。In addition, in the RFL liquid used here, it is preferable that the molar ratio of resorcinol and formalin be t:O,S~3 from the viewpoint of adhesive strength. The above-mentioned rubber latex is usually a synthetic rubber latex, and this synthetic rubber latex includes chloroprene rubber latex and styrene-butadiene-vinylpyridine rubber latex, which are used alone or in combination.
かくして接着処理された前記繊維は、従来方法に比べて
、接着力、耐屈曲性、繊維フィラメントの結束性に優れ
、伝動ベルト、コンベヤへルト、歯付ベルト及びタイヤ
等の製品に適用することができる。The adhesive-treated fibers have superior adhesive strength, bending resistance, and binding properties of fiber filaments compared to conventional methods, and can be applied to products such as power transmission belts, conveyor belts, toothed belts, and tires. can.
以下実施例により本発明方法の実施態様を、更に具体的
かつ詳細に説明する。Hereinafter, embodiments of the method of the present invention will be explained more specifically and in detail with reference to Examples.
（実施例）
実施例１
１５０００ ／ １の構成で１１回／１０ｃｍの下撚り
ががかった芳香族ポリアミド繊維（デュポン社の商品名
ケブラーを使用）のコードを第１表の組成からなるゴム
糊あるいはＲＦＬ液処理液に夫々浸漬後、１５０℃で２
分間熱処理し、次に処理された１５０００／１構成のコ
ードを４本集め、１１回／１０ｃ＋＋＋の上撚りをかけ
た（実施例ＮＯＩ、ＮＯ３）。(Example) Example 1 A cord of aromatic polyamide fiber with a composition of 15,000/1 and a twist of 11 times/10 cm (using Kevlar, a trade name of DuPont) was coated with rubber glue having the composition shown in Table 1 or After being immersed in the RFL treatment solution, they were heated at 150°C for 2
The cords were heat treated for a minute, and then the four treated cords of 15000/1 configuration were collected and subjected to 11 turns/10c+++ ply twist (Example NOI, NO3).
更に、上撚りがかかった前記該コードを第１表の組成と
同じ処理液に浸漬後、１５０”Ｃで２分間熱処理を行っ
た（実施例ＮＯ２，ＮＯ４）。次にこれらの処理コード
をドラム上にまかれた粘着テープ上にスピニングし、そ
の上に厚み３ｆｆｉｌＷの第 ′３表のクロロブ
レンゴム配合物を積層した。Furthermore, the above-mentioned twisted cords were immersed in a treatment solution having the same composition as shown in Table 1, and then heat treated at 150"C for 2 minutes (Examples No. 2 and No. 4). Next, these treated cords were placed in a drum. A chloroprene rubber compound of Table '3 having a thickness of 3ffilW was laminated on top of the adhesive tape by spinning.
そして、この積層された試料をカットし、 １５０℃で
３０分間加硫し、加硫後、該試料を幅２５ｍｍにカット
して、剥離試験機（島津製作所ニオートゲラフ）を使用
して引張り速度５０ｍｍで剥離接着力を測定した。その
結果を１表に併記する。なお表中、比較例ＮＯ２は１５
０００ ／ ＩＸ ４の構成の芳香族ポリアミド繊維コ
ードをＲＦＬ液（第２表）のみで処理した場合である。Then, this laminated sample was cut and vulcanized at 150°C for 30 minutes. After vulcanization, the sample was cut to a width of 25 mm and tested at a tensile speed of 50 mm using a peel tester (Shimadzu's Niotogelaf). Peel adhesion was measured. The results are also listed in Table 1. In addition, in the table, comparative example No. 2 is 15
This is a case where an aromatic polyamide fiber cord having a composition of 000/IX 4 was treated only with the RFL liquid (Table 2).
実施例２
前記実施例１で処理した各コードを別途ドラム上に巻か
れた厚み１．０ｍｍの前記第３表のクロロブレンゴム配
合物の上にスピニングし、その上に同厚、同配合のクロ
ロブレンゴム配合物を積層し、８ｋｇ ／ ｃｒＡ ３
０分間蒸気加硫を行ない、その加硫物からコードが２本
埋め込まれた試料を作成した。そしてこの試料を上下方
向に位置する回転屈曲バーに巻き掛け、試料の一端をフ
レームに固定し、他端に２ｋｇの荷重をかけ、該回転屈
曲バーを５０００回往復運動させる屈曲テストを行ない
、同時に引張速度５０ｍｍ／ｍｉｎでその試料の強力を
測定した。その結果は前記第１表に併記している。Example 2 Each of the cords treated in Example 1 was spun onto a 1.0 mm thick chloroprene rubber compound of Table 3, which was separately wound on a drum, and a cord of the same thickness and composition was spun onto the chloroprene rubber compound of Table 3 above. Laminated chloroprene rubber compound, 8kg/crA 3
Steam vulcanization was performed for 0 minutes, and a sample in which two cords were embedded was prepared from the vulcanized material. Then, this sample was wrapped around a rotating bending bar located in the vertical direction, one end of the sample was fixed to a frame, a load of 2 kg was applied to the other end, and the rotating bending bar was reciprocated 5000 times to conduct a bending test. The strength of the sample was measured at a tensile speed of 50 mm/min. The results are also listed in Table 1 above.
実施例３
前記実施例２で作成した加硫物を、埋め込まれたコード
にそって、コードの真上をナイフでカプトし、そのカッ
ト面のコードを爪Ｔ：ＩＱ回摩擦した後、ホツレの程度
を目視で５段階（Ａ：なし、Ｂ：ホツレにくい、Ｃ：少
しホツレる、Ｄ：ホッレやすい、Ｅ：ホツレる）にラン
ク付けした。この結果も前記第１表に併せて示した。Example 3 The vulcanizate prepared in Example 2 was cut along the embedded cord with a knife just above the cord, and the cut surface of the cord was rubbed with a fingernail T:IQ times, and then the fraying was removed. The degree of fraying was visually ranked into five levels (A: none, B: hardly frayed, C: slightly frayed, D: easily frayed, E: frayed). These results are also shown in Table 1 above.
以 下 余 白第 １ 表
第 ２ 表（ＲＦＬ液の配合） 第 ３
表（ゴム配合）（発明の効果）
以上のように本発明の接着方法は、従来のように芳香族
ポリアミド繊維を数本集めて上撚りした後に接着処理す
る方法に比べて、予め芳香族ポリアミド繊維を接着処理
したものを集めて上撚りするために、得られたコードの
結束力が良好となり、またフィラメントのフィブリル化
をおさえてホツレを防止することが可能となり、またこ
のようにして処理し終ったコードを再度接着処理するた
めに接着剤を各構成コードの周辺にまんべんなく付着さ
せることが可能となり、一段と複合体の屈曲疲労安定性
及び上記繊維のホツレを改善する優れた効果を有してい
る。Margins below Table 1 Table 2 (RFL liquid formulation) Table 3
Table (Rubber Compound) (Effects of the Invention) As described above, the bonding method of the present invention is superior to the conventional method in which several aromatic polyamide fibers are collected and twisted and then bonded. Since the fibers that have been adhesively treated are collected and twisted, the resulting cord has good cohesive strength, and it is possible to suppress fibrillation of the filaments and prevent fraying. In order to re-bond the finished cords, it is possible to apply the adhesive evenly around each component cord, which has an excellent effect of further improving the bending fatigue stability of the composite and the fraying of the fibers. There is.
特許出願人 三ツ星ベルト株式会社 手続補正苫（自発） 昭和６０年１１月１４日Patent applicant: Mitsuboshi Belting Co., Ltd. Procedural amendment Toma (voluntary) November 14, 1985
Claims (1)
リアミド繊維をゴム糊又はレゾルシン−ホルマリン−ラ
テックス溶液に浸漬し乾燥せしめた後、上記処理済みの
芳香族ポリアミド繊維を複数本集めて下撚りをかけた後
、これを未加硫ゴムと密着加硫せしめることを特徴とす
る芳香族ポリアミド繊維とゴム配合物との接着方法。 ２、下撚りのかかったもしくは引き揃えられた芳香族ポ
リアミド繊維とゴム糊又はレゾルシン−ホルマリン−ラ
テックス溶液に浸漬し乾燥させた後、上記処理済みの芳
香族ポリアミド繊維を複数本集めて下撚りをかけ、更に
上記ゴム糊又はレゾルシン−ホルマリン−ラテックス溶
液に浸漬し乾燥した後、これを未加硫ゴムと密着加硫せ
しめることを特徴とする芳香族ポリアミド繊維とゴム配
合物との接着方法。[Claims] 1. After immersing the first-twisted or aligned aromatic polyamide fibers in rubber glue or a resorcinol-formalin-latex solution and drying them, a plurality of the above-treated aromatic polyamide fibers are immersed. A method for adhering aromatic polyamide fibers and a rubber compound, which comprises gathering and first twisting the fibers, and then vulcanizing the fibers in close contact with unvulcanized rubber. 2. After immersing the pre-twisted or aligned aromatic polyamide fibers in rubber glue or resorcinol-formalin-latex solution and drying them, collect a plurality of the above-treated aromatic polyamide fibers and pre-twist them. A method for adhering aromatic polyamide fibers and a rubber compound, which comprises applying the fibers to the rubber compound and then immersing them in the above-mentioned rubber glue or resorcinol-formalin-latex solution, drying, and then vulcanizing the fibers in close contact with unvulcanized rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16741184A JPS61166838A (en) | 1984-08-09 | 1984-08-09 | Bonding of aromatic polyamide fiber and rubber compound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16741184A JPS61166838A (en) | 1984-08-09 | 1984-08-09 | Bonding of aromatic polyamide fiber and rubber compound |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61166838A true JPS61166838A (en) | 1986-07-28 |
| JPH0252931B2 JPH0252931B2 (en) | 1990-11-15 |
Family
ID=15849195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16741184A Granted JPS61166838A (en) | 1984-08-09 | 1984-08-09 | Bonding of aromatic polyamide fiber and rubber compound |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61166838A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0453836A (en) * | 1990-06-21 | 1992-02-21 | Mitsuboshi Belting Ltd | Short fiber-containing rubber composite material and its production |
-
1984
- 1984-08-09 JP JP16741184A patent/JPS61166838A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0453836A (en) * | 1990-06-21 | 1992-02-21 | Mitsuboshi Belting Ltd | Short fiber-containing rubber composite material and its production |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0252931B2 (en) | 1990-11-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |