JPH0390615A - Melt-spinning of high-molecular weight polyester - Google Patents
Melt-spinning of high-molecular weight polyesterInfo
- Publication number
- JPH0390615A JPH0390615A JP22162289A JP22162289A JPH0390615A JP H0390615 A JPH0390615 A JP H0390615A JP 22162289 A JP22162289 A JP 22162289A JP 22162289 A JP22162289 A JP 22162289A JP H0390615 A JPH0390615 A JP H0390615A
- Authority
- JP
- Japan
- Prior art keywords
- yarn
- spinning
- superheated steam
- polyester
- molecular weight
- 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
- 229920000728 polyester Polymers 0.000 title claims abstract description 18
- 238000002074 melt spinning Methods 0.000 title claims description 10
- 238000009987 spinning Methods 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 11
- 239000012770 industrial material Substances 0.000 abstract description 4
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 abstract description 4
- -1 polyethylene terephthalate Polymers 0.000 abstract description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract description 4
- 239000005020 polyethylene terephthalate Substances 0.000 abstract description 4
- 229920000642 polymer Polymers 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000835 fiber Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- YZTJKOLMWJNVFH-UHFFFAOYSA-N 2-sulfobenzene-1,3-dicarboxylic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1S(O)(=O)=O YZTJKOLMWJNVFH-UHFFFAOYSA-N 0.000 description 1
- 229940090248 4-hydroxybenzoic acid Drugs 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ポリエステルで、特に高分子量のポリマーを
溶融紡糸し、タイヤコード及び産業資材用途に使用され
る高強力糸を得る方法に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method of melt-spinning polyester, particularly a high molecular weight polymer, to obtain high-strength yarn used for tire cords and industrial material applications. be.
ポリエステルは、その優れた耐光堅牢性や高弾性率とい
う繊維特性のために衣料用途だけでなく、産業資材用途
にも多く使用されている。Polyester is widely used not only for clothing but also for industrial materials because of its fiber properties such as excellent light fastness and high elastic modulus.
最近、タイヤコード及び産業資材用途における繊維特性
に対する要求は厳しいものがあり、更に高強度、高弾性
率化が要求されている。Recently, there are strict requirements for fiber properties in tire cord and industrial material applications, and higher strength and higher modulus of elasticity are also required.
そのために、ポリマーを従来より高分子量化して紡糸す
ることにより、より高強度、高弾性率化しようとする試
みがなされている。To this end, attempts have been made to increase the strength and modulus of elasticity by spinning polymers with higher molecular weights.
例えば、特開昭６３−１９６７１１号公報においては、
繊維の極限粘度を１．０以上とすることにより、高強度
、高弾性率繊維を得ようとしている。For example, in Japanese Patent Application Laid-Open No. 63-196711,
By setting the intrinsic viscosity of the fiber to 1.0 or more, it is attempted to obtain a fiber with high strength and high elastic modulus.
一方、溶融ポリマーは、同一温度では分子量が高くなる
につれて伸張粘度が上昇し、ポリマー液に曳糸性が無く
なり、さらには破断につながる。On the other hand, at the same temperature, the extensional viscosity of a molten polymer increases as the molecular weight increases, causing the polymer liquid to lose stringiness and even lead to breakage.
これが高重合度ポリエステルの溶融紡糸の最大の問題で
ある。This is the biggest problem in melt spinning high polymerization degree polyester.
本発明の目的は、高重合度ポリエステルを従来公知の溶
融紡糸方法で紡糸する際に有する前述の欠点を解消して
、高強力・高弾性糸を、工業的に得る紡糸方法を提供す
ることである。An object of the present invention is to provide a spinning method for industrially obtaining high-strength and high-elastic yarn by eliminating the above-mentioned drawbacks that occur when spinning high-polymerization degree polyester using conventionally known melt-spinning methods. be.
上記本発明の目的を達成するために、本発明は紡糸口金
より吐出された高分子量ポリエステルの溶融紡糸にあた
り、加熱筒内に過熱水蒸気を導入し、紡糸口金直下領域
の糸条の雰囲気温度を３００℃以上に保ちつつ紡糸する
ことを特徴としている。In order to achieve the above object of the present invention, the present invention introduces superheated steam into a heating cylinder during melt spinning of high molecular weight polyester discharged from a spinneret, and increases the atmospheric temperature of the yarn in the area immediately below the spinneret to 300°C. It is characterized by spinning while maintaining the temperature above ℃.
例えば、具体的には紡糸口金下部の糸条周辺をヒーター
で囲みその内部に過熱水蒸気を供給しつつ、周辺より内
部雰囲気を外部に排気する加熱筒を冷風部の上部に設け
た紡糸装置を用い、例えば溶融ポリエステルを３００℃
で紡糸口金より吐出させ、その紡糸口金直下の雰囲気を
３５０℃の過熱水蒸気で満たし、糸表面の温度が、過熱
水蒸気が凝縮する温度即ち、１００℃より高い領域の一
部または大部分を、過熱水蒸気にて満たし、紡糸するこ
とにより、該目的を達成できる。For example, specifically, a spinning device is used in which a heater surrounds the periphery of the yarn at the bottom of the spinneret, supplies superheated steam to the interior of the heater, and a heating tube is provided at the top of the cold air section to exhaust the internal atmosphere from the periphery to the outside. , for example, melt polyester at 300℃
The atmosphere directly under the spinneret is filled with superheated steam at 350°C, and part or most of the area where the temperature of the yarn surface is higher than the temperature at which the superheated steam condenses, that is, 100°C, is superheated. This purpose can be achieved by filling with water vapor and spinning.
過熱水蒸気の領域を該糸条の表面温度が１００℃より高
い領域に限ったのは、以下の理由による。The reason why the region of superheated steam is limited to the region where the surface temperature of the yarn is higher than 100° C. is as follows.
即ち、−船釣に溶融紡糸の場合、該糸条の表面から周囲
の雰囲気に熱を放出することにより溶融ポリマーは固化
していく０本発明の場合も、紡口直下では、伸張粘度を
低下させて曳糸性を向上させる為に、溶融ポリマーの温
度よりも周囲の過熱水蒸気雰囲気の温度をより高くして
いるが、その下方では固化するためには、該糸条の表面
温度よりも、その雰囲気の温度の方が低くなければなら
ない、更に、１気圧下における水蒸気の飽和温度は１０
０℃であり、これより低い温度では水蒸気は凝縮してし
まい、本発明の目的を達成することができなくなってし
まう、従って該糸条の表面温度が１００℃より高い領域
においてのみ、過熱水蒸気を用いることができる。尚、
厳密に言うと、もしも気圧が１気圧よりも低い場合には
、該飽和温度は１００℃より低くなり、その分、該過熟
水蒸気の領域をより低温側まで広げることができ、その
場合でも本発明の目的は達せられる。That is, - In the case of melt spinning for boat fishing, the molten polymer solidifies by releasing heat from the surface of the yarn into the surrounding atmosphere.In the case of the present invention, the extensional viscosity is also reduced immediately below the spinneret. In order to improve spinnability, the temperature of the surrounding superheated steam atmosphere is set higher than the temperature of the molten polymer. The temperature of the atmosphere must be lower; furthermore, the saturation temperature of water vapor at 1 atm is 10
If the temperature is lower than this, the steam will condense, making it impossible to achieve the object of the present invention.Therefore, superheated steam should only be used in areas where the surface temperature of the yarn is higher than 100°C. Can be used. still,
Strictly speaking, if the atmospheric pressure is lower than 1 atm, the saturation temperature will be lower than 100°C, and the region of supermature steam can be expanded to lower temperatures, and even in that case, the saturation temperature will be lower than 100°C. The purpose of the invention is achieved.
本発明で言う、ポリエステルの場合は０−クロロフェノ
ール３５℃で測定した極限粘度（ＩＶ）が、１．２以上
である高分子量ポリエステルを言う。本発明で言う、ポ
リエステルとはポリエチレンテレフタレートを主とする
ものであり、その中に要求される高強度、高弾性特性を
損なわない程度に、他の成分を含んでいてもよい。他の
成分とは、例えば、イソフタル酸、スルホイソフタル酸
、アジピン酸、ネオペンチルグリコール、ペンタエリス
リトール、２，２−ビス（４−ヒドロキシ−フェニル）
プロパン、グリセリン、ポリエチレングリコール、など
であり、その他、公知のものが使用できる。また、溶融
紡糸可能なものであればポリエチレンテレフタレートに
さらに高弾性を与えるための剛直な構造を有する他成分
を含んでいてもよい。例えば、ｐ−ヒドロキシ安息香酸
等であるが、その他公知のものが使用できる。In the case of polyester as used in the present invention, 0-chlorophenol refers to a high molecular weight polyester whose intrinsic viscosity (IV) measured at 35°C is 1.2 or more. In the present invention, polyester is mainly composed of polyethylene terephthalate, and may contain other components to the extent that the required high strength and high elastic properties are not impaired. Other ingredients include, for example, isophthalic acid, sulfoisophthalic acid, adipic acid, neopentyl glycol, pentaerythritol, 2,2-bis(4-hydroxy-phenyl)
Propane, glycerin, polyethylene glycol, etc., and other known materials can be used. Further, as long as it can be melt-spun, the polyethylene terephthalate may contain other components having a rigid structure in order to impart even higher elasticity to the polyethylene terephthalate. For example, p-hydroxybenzoic acid is used, but other known acids can be used.
なおポリエステルの溶融紡糸における水蒸気による可塑
化効果に関しては、例えば特開昭４８−９９４２０や、
特開昭５６−１４０１１７に見られるように、紡出され
た溶融フィラメント状物をガラス転移点以下の温度に冷
却した後、水蒸気と接触させる方法が提案されている。Regarding the plasticizing effect of water vapor in melt spinning of polyester, see, for example, JP-A-48-99420;
As seen in JP-A-56-140117, a method has been proposed in which a spun molten filament is cooled to a temperature below the glass transition point and then brought into contact with water vapor.
この方法は、紡口がら紡出された溶融フィラメント状物
の温度がガラス転移点より高い状態で、水蒸気と接触さ
せることを特徴としている本発明とは基本的に異なって
いる。This method differs fundamentally from the present invention, which is characterized in that the molten filaments spun from the spinneret are brought into contact with water vapor at a temperature above the glass transition temperature.
以下、本発明の一実施例を示す添付図面を参照して本発
明を詳述する。Hereinafter, the present invention will be described in detail with reference to the accompanying drawings showing one embodiment of the present invention.
第一図に示すように、本発明による紡糸装置は、紡口１
より吐出された溶融状態にある超高粘度のポリマー２ａ
の周囲をヒーター３にて囲み、該ヒーター３の内側に内
部雰囲気を外部に吸引排気するための多孔ｆ１４をもう
け、その下部に過熱水蒸気を供給するための整流筒５を
もうけ、該ポリマー ２ ａを加熱する。As shown in FIG. 1, the spinning device according to the present invention includes a spinneret 1
Ultra-high viscosity polymer 2a in a molten state discharged from
is surrounded by a heater 3, a porous hole f14 is provided inside the heater 3 for sucking and exhausting the internal atmosphere to the outside, and a rectifying tube 5 is provided below the hole f14 for supplying superheated steam, and the polymer 2a is surrounded by a heater 3. heat up.
更に、該整流筒５の下部に保温筒６をもうけ、その下部
に冷却するための冷風供給部７及び冷風カラム８をもう
ける。以上の工程で冷却された糸条２ｂは、下方に配置
された糸条処理装置に引き取られる。Further, a heat retaining cylinder 6 is provided at the lower part of the straightening cylinder 5, and a cold air supply section 7 and a cold air column 8 for cooling are provided at the lower part thereof. The yarn 2b cooled in the above steps is taken up by a yarn processing device located below.
又、第一図は縦吹き冷風装置を示すが、第二図のように
内部から冷風を供給してもよいし、第三図に示すように
横吹き冷風装置を用いてもよい。Further, although FIG. 1 shows a vertical blowing cold air device, cold air may be supplied from the inside as shown in FIG. 2, or a horizontal blowing cold air device may be used as shown in FIG.
過熱水蒸気を供給する方法として、第四図に示すように
該紡口１の直下に過熱水蒸気を供給するための該整流筒
５をもうけても良いし、又第五図のように、該ヒーター
３の中間に過熱水蒸気を供給するための該整流筒５をも
うけても良い。As a method of supplying superheated steam, as shown in FIG. 4, the rectifying tube 5 for supplying superheated steam may be provided directly below the spinneret 1, or as shown in FIG. 3 may be provided with a rectifying tube 5 for supplying superheated steam.
例えば、温度条件に関して一例として紹介すると、紡口
１及びポリマー２ａの温度は３００℃、ヒーター３は３
５０℃、整流筒５より供給する過熱水蒸気の温度は３３
０℃、冷風供給部７より供給する冷風の温度は１８℃で
ある。For example, to introduce an example of temperature conditions, the temperature of the spinneret 1 and the polymer 2a is 300°C, and the temperature of the heater 3 is 300°C.
50°C, the temperature of the superheated steam supplied from the rectifier cylinder 5 is 33°C.
The temperature of the cold air supplied from the cold air supply unit 7 is 18°C.
本発明の紡糸方法により、従来の方法では得ることので
きなかった極めて高強力のポリエステル＃ａ維を得るこ
とができた。第１表に本発明の方法の一例と従来の方法
との比較結果を示す。By the spinning method of the present invention, it was possible to obtain polyester #a fibers with extremely high strength, which could not be obtained by conventional methods. Table 1 shows the comparison results between an example of the method of the present invention and a conventional method.
本発明による紡糸方法及び紡糸装置を用いれば、ＩＶ値
が１．２以上のような高分子量ポリエステルを溶融紡糸
する際、水蒸気による可塑化効果により、延伸がスムー
スに行なわれ、その結果、従来帯ることのできなかった
、１２ｇ／−ｄ以上の高強度糸を、工業的に製造するこ
とができる。By using the spinning method and spinning device according to the present invention, when melt-spinning high molecular weight polyester having an IV value of 1.2 or more, the stretching is performed smoothly due to the plasticizing effect of water vapor. It is now possible to industrially produce high-strength yarns of 12 g/-d or more, which have previously been impossible to produce.
第１図は本発明による紡糸方法を実施するための装置の
一実施例を示す正面図であり、第２図及び第３図は冷却
部の他の実施例を示す正面図である。第４図及び第５図
は本発明による水蒸気の供給装置の他の実施例を示す正
面図である。
１・・・紡口、
２ｂ・・・糸条、
４・・・吸引筒、
７・・・冷風供給部。
２ａ・・・溶融ポリマー
３・・・ヒーター、
５・・・水蒸気供給整流筒、FIG. 1 is a front view showing one embodiment of the apparatus for carrying out the spinning method according to the present invention, and FIGS. 2 and 3 are front views showing other embodiments of the cooling section. 4 and 5 are front views showing other embodiments of the steam supply device according to the present invention. 1... Spinneret, 2b... Yarn, 4... Suction tube, 7... Cold air supply section. 2a... Molten polymer 3... Heater, 5... Steam supply rectifier tube,
Claims (1)
糸にあたり、加熱筒内に過熱水蒸気を導入し、紡糸口金
直下領域の糸条の雰囲気温度を３００℃以上に保ちつつ
紡糸することを特徴とする溶融紡糸方法。Melt spinning characterized by introducing superheated steam into a heating cylinder during melt spinning of high molecular weight polyester discharged from a spinneret, and performing spinning while maintaining the atmospheric temperature of the yarn in the region immediately below the spinneret at 300°C or higher. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22162289A JPH0390615A (en) | 1989-08-30 | 1989-08-30 | Melt-spinning of high-molecular weight polyester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22162289A JPH0390615A (en) | 1989-08-30 | 1989-08-30 | Melt-spinning of high-molecular weight polyester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0390615A true JPH0390615A (en) | 1991-04-16 |
Family
ID=16769645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22162289A Pending JPH0390615A (en) | 1989-08-30 | 1989-08-30 | Melt-spinning of high-molecular weight polyester |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0390615A (en) |
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|---|---|---|---|---|
| JP2020026586A (en) * | 2018-08-10 | 2020-02-20 | 株式会社エアウィーヴ | Manufacturing apparatus of filament three dimensional conjugate |
| US11495798B1 (en) | 2015-08-28 | 2022-11-08 | Group14 Technologies, Inc. | Materials with extremely durable intercalation of lithium and manufacturing methods thereof |
| US11492262B2 (en) | 2020-08-18 | 2022-11-08 | Group14Technologies, Inc. | Silicon carbon composites comprising ultra low Z |
| US11495793B2 (en) | 2013-03-14 | 2022-11-08 | Group14 Technologies, Inc. | Composite carbon materials comprising lithium alloying electrochemical modifiers |
| US11611070B2 (en) | 2020-08-18 | 2023-03-21 | Group14 Technologies, Inc. | Highly efficient manufacturing of silicon-carbon composites materials comprising ultra low Z |
| US11611071B2 (en) | 2017-03-09 | 2023-03-21 | Group14 Technologies, Inc. | Decomposition of silicon-containing precursors on porous scaffold materials |
| US11611073B2 (en) | 2015-08-14 | 2023-03-21 | Group14 Technologies, Inc. | Composites of porous nano-featured silicon materials and carbon materials |
| US11661517B2 (en) | 2014-03-14 | 2023-05-30 | Group14 Technologies, Inc. | Methods for sol-gel polymerization in absence of solvent and creation of tunable carbon structure from same |
| US11707728B2 (en) | 2013-11-05 | 2023-07-25 | Group14 Technologies, Inc. | Carbon-based compositions with highly efficient volumetric gas sorption |
| US11718701B2 (en) | 2012-02-09 | 2023-08-08 | Group14 Technologies, Inc. | Preparation of polymeric resins and carbon materials |
-
1989
- 1989-08-30 JP JP22162289A patent/JPH0390615A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11732079B2 (en) | 2012-02-09 | 2023-08-22 | Group14 Technologies, Inc. | Preparation of polymeric resins and carbon materials |
| US11725074B2 (en) | 2012-02-09 | 2023-08-15 | Group 14 Technologies, Inc. | Preparation of polymeric resins and carbon materials |
| US11718701B2 (en) | 2012-02-09 | 2023-08-08 | Group14 Technologies, Inc. | Preparation of polymeric resins and carbon materials |
| US11495793B2 (en) | 2013-03-14 | 2022-11-08 | Group14 Technologies, Inc. | Composite carbon materials comprising lithium alloying electrochemical modifiers |
| US11707728B2 (en) | 2013-11-05 | 2023-07-25 | Group14 Technologies, Inc. | Carbon-based compositions with highly efficient volumetric gas sorption |
| US11661517B2 (en) | 2014-03-14 | 2023-05-30 | Group14 Technologies, Inc. | Methods for sol-gel polymerization in absence of solvent and creation of tunable carbon structure from same |
| US11611073B2 (en) | 2015-08-14 | 2023-03-21 | Group14 Technologies, Inc. | Composites of porous nano-featured silicon materials and carbon materials |
| US11646419B2 (en) | 2015-08-28 | 2023-05-09 | Group 14 Technologies, Inc. | Materials with extremely durable intercalation of lithium and manufacturing methods thereof |
| US11495798B1 (en) | 2015-08-28 | 2022-11-08 | Group14 Technologies, Inc. | Materials with extremely durable intercalation of lithium and manufacturing methods thereof |
| US11611071B2 (en) | 2017-03-09 | 2023-03-21 | Group14 Technologies, Inc. | Decomposition of silicon-containing precursors on porous scaffold materials |
| JP2020026586A (en) * | 2018-08-10 | 2020-02-20 | 株式会社エアウィーヴ | Manufacturing apparatus of filament three dimensional conjugate |
| US11611070B2 (en) | 2020-08-18 | 2023-03-21 | Group14 Technologies, Inc. | Highly efficient manufacturing of silicon-carbon composites materials comprising ultra low Z |
| US11498838B2 (en) | 2020-08-18 | 2022-11-15 | Group14 Technologies, Inc. | Silicon carbon composites comprising ultra low z |
| US11492262B2 (en) | 2020-08-18 | 2022-11-08 | Group14Technologies, Inc. | Silicon carbon composites comprising ultra low Z |
| US11804591B2 (en) | 2020-08-18 | 2023-10-31 | Group14 Technologies, Inc. | Highly efficient manufacturing of silicon-carbon composite materials comprising ultra low Z |
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