JPS6211097B2 - - Google Patents
Info
- Publication number
- JPS6211097B2 JPS6211097B2 JP6869380A JP6869380A JPS6211097B2 JP S6211097 B2 JPS6211097 B2 JP S6211097B2 JP 6869380 A JP6869380 A JP 6869380A JP 6869380 A JP6869380 A JP 6869380A JP S6211097 B2 JPS6211097 B2 JP S6211097B2
- Authority
- JP
- Japan
- Prior art keywords
- aromatic polyamide
- yarn
- twisted
- twist coefficient
- resin
- 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.)
- Expired
Links
- 239000004760 aramid Substances 0.000 claims description 19
- 229920003235 aromatic polyamide Polymers 0.000 claims description 19
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 4
- 239000000805 composite resin Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 229920005749 polyurethane resin Polymers 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 6
- 239000000835 fiber Substances 0.000 description 6
- 229920000728 polyester Polymers 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- -1 polyparaphenylene terephthalamide Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- WNLRTRBMVRJNCN-UHFFFAOYSA-L adipate(2-) Chemical compound [O-]C(=O)CCCCC([O-])=O WNLRTRBMVRJNCN-UHFFFAOYSA-L 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 150000002483 hydrogen compounds Chemical class 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 229920001610 polycaprolactone Polymers 0.000 description 1
- 239000004632 polycaprolactone Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Description
芳香族ポリアミド繊維は、在来の有機質繊維に
比して、耐熱性・耐薬品性に優れ、かつ鋼線に近
い大きな引張強度と高いモジユラスを有している
が、繊維単独の集合あるいは撚り糸のみの形態で
は種々の製品に加工する工程において、また、製
品が実際に使用される状態において撚りの戻りに
よる伸びを生じ、あるいは摩擦によつて毛羽立ち
が起る等好ましくない現象もある。
これを防止し、また撥水性を高める手段とし
て、従来から合糸または撚糸の集合体に、樹脂を
含浸し、加熱して固着する方法が採用されてき
た。この従来の樹脂含浸方法では撥水性を確実に
するために、一部でも露出部分がないように糸条
表面を完全に蔽うように比較的低粘度の樹脂溶液
を塗布・含浸するため、集合あるいは撚り合され
た繊維間に充たされ、繊維同志が固着されて著し
く剛性を増加する。剛性の増加は、その糸条体の
用途によつては好ましくない特性である。一方剛
性の増加を避けるため塗布樹脂量を制限すると糸
条体の親水性が残るし、また、摩擦により毛羽立
ちが起り易い。
本発明は上記の欠点を改善するもので、集合さ
れた芳香族ポリアミド撚糸の繊維間を接着剤、塗
料等で含浸することなく、従つて繊維間が固着さ
れることなく、自由度を残したまま、断面を円形
に仕上げられた外表面の周囲に、極く薄く、一様
に、且連続的にポリウレタン樹脂の被膜を施した
もので、集合または撚り合された個々の繊維の自
由は、ほぼ確保されたまま、耐摩耗性と撥水性を
向上させることに成功したものである。
本発明における芳香族ポリアミド合糸又は撚糸
とは、一般式
（但しｎは正の整数である。）
で表される有機高分子化合物（ポリパラフエニレ
ンテレフタラミド）を紡糸して繊維化したもの又
はこれを撚つたもので、これらの強度をナイロン
糸、ガラス糸、ポリエステル糸と比較すると第１
表のとおりである。
Aromatic polyamide fibers have superior heat resistance and chemical resistance compared to conventional organic fibers, as well as high tensile strength and modulus similar to those of steel wire. In this form, there are undesirable phenomena such as elongation due to untwisting or fuzzing due to friction during the process of processing into various products and when the product is actually used. As a means to prevent this and to improve water repellency, a method has conventionally been adopted in which an aggregate of doubled or twisted yarns is impregnated with resin and fixed by heating. In this conventional resin impregnation method, in order to ensure water repellency, a relatively low viscosity resin solution is applied and impregnated so as to completely cover the yarn surface so that no part of it is exposed. It fills the spaces between the twisted fibers, fixing them together and significantly increasing rigidity. Increased stiffness is an undesirable property depending on the application of the filament. On the other hand, if the amount of coated resin is limited in order to avoid an increase in rigidity, the hydrophilic nature of the filament remains, and fluffing is likely to occur due to friction. The present invention aims to improve the above-mentioned drawbacks, and it does not impregnate the fibers of the assembled aromatic polyamide twisted yarn with adhesives, paints, etc., and therefore the fibers are not fixed, leaving a degree of freedom. An extremely thin, uniform, and continuous coating of polyurethane resin is applied around the outer surface, which has a circular cross section. We succeeded in improving abrasion resistance and water repellency while maintaining almost the same properties. The aromatic polyamide yarn or twisted yarn in the present invention has the general formula (However, n is a positive integer.) The organic polymer compound (polyparaphenylene terephthalamide) represented by is spun into fibers or twisted, and the strength of these is compared to that of nylon thread. , glass yarn, and polyester yarn, it ranks first.
As shown in the table.
【表】
第１表に示すように、芳香族ポリアミド糸の引
張強度は、ナイロン糸やポリエステル糸の２倍以
上であり、ガラス糸の1.2倍強である。また、伸
びにおいては、ガラス糸の約1/2であり、ナイロ
ン糸やポリエステル糸の1/5以下である。
本発明の芳香族ポリアミド複合糸は、前記した
一般式で示されるポリパラフエニレンテレフタラ
ミドを紡糸して得た合糸又は撚糸２条以上を揃え
て下記の式[Table] As shown in Table 1, the tensile strength of aromatic polyamide yarn is more than twice that of nylon yarn or polyester yarn, and over 1.2 times that of glass yarn. In addition, the elongation is approximately 1/2 that of glass thread, and less than 1/5 that of nylon thread or polyester thread. The aromatic polyamide composite yarn of the present invention is prepared by aligning two or more doubled yarns or twisted yarns obtained by spinning polyparaphenylene terephthalamide represented by the general formula described above.
【表】
で定義される撚り係数(K)が６以下となるように撚
られている。
一般に撚糸における引張強度や伸びと撚り係数
との間には、特定の関係がある。芳香族ポリアミ
ド糸条の場合には、その撚り係数と引張強度との
関係を示せば第１図のとおりである。また、撚り
係数と破断伸びとの関係は第２図のとおりであ
る。
第１図から判るように、芳香族ポリアミド糸条
においては引張強度は撚り係数が１のときに最大
となり、それを中心にして撚り係数が大きくなつ
ても小さくなつても引張強度は減少する。他方撚
り係数と破断伸びとの関係は、第２図が示すよう
に、撚り係数の増加とともに伸びは増大する傾向
にある。
従つて、芳香族ポリアミド糸条の特徴である高
い引張強度をできるだけ大きく保ち、かつ、伸び
をできるだけ小さく保持するためには、撚り係数
(K)を６以下、好ましくは2.5以下にしなければな
らない。
本発明において、撚係数(K)が６を越えるような
場合には、引張強度が低下し、伸び率が大きくな
つて、目的とする効果が得られない。
本発明の芳香族ポリアミド撚糸の表面には、ポ
リウレタン樹脂若しくはポリウレタン共重合樹脂
又はこれらを含む混合樹脂を薄く連続的な被覆が
設けられている。
ここで、ポリウレタン樹脂とは、ジイソシアネ
ートと２個以上の活性水素化合物を反応させて得
られる高分子重合体で、その反応によつて、注
型、混練、熱可塑の三タイプがある。
本発明に用いるポリウレタン樹脂は、主とし
て、熱可塑型で、原料ポリオールの形から更にポ
リエーテル系、ポリエステル系の二種類に分けら
れる。
また、ポリエステル系には、アジペート系、ポ
リカプロラクトン系、ポリカーボネート系に分け
られる。
熱可塑型のものの一例の化学構造式を示せば次
のとおりである。
芳香族ポリアミド撚糸の被覆は、例えばジメチ
ルホルムアミド（OMF）、テトラヒドロフラン
（THF）、ジメチルスルホオキサイド（DMSO）、
ジオキサン、チクロヘキサン等を溶剤とするポリ
ウレタン樹脂、即ちポリウレタン樹脂の溶剤型塗
料を芳香族ポリアミド撚糸条の表面に塗布し、し
かる後乾燥、蒸発等により脱溶剤することにより
施こすことができるし、また押出機による溶融押
出被覆法、その他の公知の被覆法によつても容易
に行なうことができる。
本発明は、芳香族ポリアミド撚糸の全表面に薄
く連続的にポリウレタン樹脂を被覆することによ
り、芳香族ポリアミド糸条の短所とされている低
耐摩耗性、結節時強度の低下性の改善に著しい効
果を奏する。
例えば、400デニール×１×３芳香族ポリアミ
ド撚糸について、被覆なしおよびポリエステル塗
料含浸のものと本発明の樹脂被覆を有するものと
の摩耗破断特性を比較したところ、第２表の結果
を得た。なお、試験はアムスラー摩耗試験機を用
いて１Kgの荷重下で破断するまでの回数及び、ユ
ニバーサル屈曲摩耗試験機を用いて１ポンドの荷
重下で破断するまでの回数を測定した。[Table] Twisted so that the twist coefficient (K) defined in [Table] is 6 or less. Generally, there is a specific relationship between the tensile strength or elongation of twisted yarn and the twist coefficient. In the case of aromatic polyamide yarn, the relationship between its twist coefficient and tensile strength is shown in Figure 1. Moreover, the relationship between twist coefficient and elongation at break is as shown in FIG. As can be seen from FIG. 1, the tensile strength of the aromatic polyamide yarn is maximum when the twist coefficient is 1, and the tensile strength decreases as the twist coefficient increases or decreases around this point. On the other hand, as shown in FIG. 2, the relationship between the twist coefficient and elongation at break shows that as the twist coefficient increases, the elongation tends to increase. Therefore, in order to maintain the high tensile strength that is characteristic of aromatic polyamide yarn as much as possible and to keep elongation as low as possible, it is necessary to adjust the twist coefficient.
(K) must be 6 or less, preferably 2.5 or less. In the present invention, when the twist coefficient (K) exceeds 6, the tensile strength decreases, the elongation rate increases, and the desired effect cannot be obtained. The surface of the aromatic polyamide twisted yarn of the present invention is provided with a thin continuous coating of a polyurethane resin, a polyurethane copolymer resin, or a mixed resin containing these. Here, the polyurethane resin is a high molecular weight polymer obtained by reacting a diisocyanate with two or more active hydrogen compounds, and there are three types depending on the reaction: casting, kneading, and thermoplastic. The polyurethane resin used in the present invention is mainly a thermoplastic type, and can be further divided into two types, polyether type and polyester type, depending on the type of raw material polyol. Furthermore, polyester-based materials are classified into adipate-based, polycaprolactone-based, and polycarbonate-based. The chemical structural formula of an example of a thermoplastic type is shown below. The aromatic polyamide strands are coated with, for example, dimethylformamide (OMF), tetrahydrofuran (THF), dimethylsulfoxide (DMSO),
It can be applied by applying a polyurethane resin using dioxane, cyclohexane, etc. as a solvent, that is, a solvent-based coating of polyurethane resin, to the surface of the aromatic polyamide twisted thread, and then removing the solvent by drying, evaporation, etc. It can also be easily carried out by a melt extrusion coating method using an extruder or other known coating methods. The present invention significantly improves the low abrasion resistance and decrease in strength at knotting, which are considered to be disadvantages of aromatic polyamide yarns, by coating the entire surface of aromatic polyamide twisted yarns with a thin and continuous layer of polyurethane resin. be effective. For example, the abrasion and rupture properties of 400 denier x 1 x 3 aromatic polyamide twisted yarns, uncoated and impregnated with polyester paint, and those coated with the resin of the present invention were compared, and the results shown in Table 2 were obtained. In the test, the number of times it took to break under a load of 1 kg using an Amsler abrasion tester and the number of times it took to break under a load of 1 pound using a universal bending abrasion tester were measured.
【表】
本発明の芳香族ポリアミド複合糸においては、
耐摩耗性の必要度によつて、また、耐候性増加に
応じ、樹脂の種類および被覆厚を任意に選ぶこと
が可能で、例えば、耐摩耗性をさ程要求されない
場合は、0.05mm程度の被覆厚で十分である。ま
た、極めて高い耐摩耗性を必要とする場合には
0.3mm程度の被覆を施すことによつてその要求を
満すことが可能であり、その対応はかなり任意で
ある。
なお、本発明の複合糸は、ワイヤロープ、ケー
ブル耐張材、飛行機や車輛の構造材、船材の構造
材、防弾用資材、釣テグス、ラケツトガツト等に
広く使用できる。[Table] In the aromatic polyamide composite yarn of the present invention,
The type of resin and coating thickness can be arbitrarily selected depending on the degree of abrasion resistance required and the increase in weather resistance. The coating thickness is sufficient. In addition, when extremely high wear resistance is required,
This requirement can be met by applying a coating of about 0.3 mm, and the response is quite arbitrary. The composite yarn of the present invention can be widely used in wire ropes, cable tension materials, structural materials for airplanes and vehicles, structural materials for ships, bulletproof materials, fishing rods, racket strings, and the like.
第１図は、芳香族ポリアミド糸の引張強度と撚
り係数との関係図であり、第２図は芳香族ポリア
ミド糸の伸びと撚り係数との関係図である。
FIG. 1 is a diagram showing the relationship between the tensile strength and twist coefficient of aromatic polyamide yarn, and FIG. 2 is a diagram showing the relationship between elongation and twist coefficient of aromatic polyamide yarn.
Claims (1)
が一般式 【表】 で定義される撚り係数Ｋが６以下で撚られた撚り
糸の外側に、薄いポリウレタン樹脂若しくはポリ
ウレタン共重合体樹脂またはこれらの少なくとも
一種類の樹脂を含む混合樹脂の被覆を設けたこと
を特徴とする芳香族ポリアミド複合糸。[Scope of Claims] 1 Two or more threads of aromatic polyamide doubling or twisted thread are twisted with a twist coefficient K of 6 or less as defined by the general formula An aromatic polyamide composite yarn characterized in that it is coated with a composite resin or a mixed resin containing at least one of these resins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6869380A JPS56165036A (en) | 1980-05-23 | 1980-05-23 | Aromatic polyamide composite yarn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6869380A JPS56165036A (en) | 1980-05-23 | 1980-05-23 | Aromatic polyamide composite yarn |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56165036A JPS56165036A (en) | 1981-12-18 |
| JPS6211097B2 true JPS6211097B2 (en) | 1987-03-10 |
Family
ID=13381088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6869380A Granted JPS56165036A (en) | 1980-05-23 | 1980-05-23 | Aromatic polyamide composite yarn |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56165036A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59179890A (en) * | 1983-03-30 | 1984-10-12 | 帝人株式会社 | Anti-wear fiber rope |
-
1980
- 1980-05-23 JP JP6869380A patent/JPS56165036A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56165036A (en) | 1981-12-18 |
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