JPH05195313A - Pressurized steam drawing of thick-denier acrylic filament yarn - Google Patents
Pressurized steam drawing of thick-denier acrylic filament yarnInfo
- Publication number
- JPH05195313A JPH05195313A JP4006531A JP653192A JPH05195313A JP H05195313 A JPH05195313 A JP H05195313A JP 4006531 A JP4006531 A JP 4006531A JP 653192 A JP653192 A JP 653192A JP H05195313 A JPH05195313 A JP H05195313A
- Authority
- JP
- Japan
- Prior art keywords
- steam
- yarn
- thick
- pressure
- heat
- 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
- Artificial Filaments (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Inorganic Fibers (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は太物アクリル系フィラメ
ント糸条の加圧スチーム延伸法に関するものである。さ
らに詳細には、太物アクリル系フィラメント糸条を毛羽
の発生なく良好に延伸できる加圧スチーム延伸法に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure steam drawing method for thick acrylic filament yarns. More specifically, the present invention relates to a pressure steam drawing method capable of drawing a thick acrylic filament yarn satisfactorily without generating fluff.
【０００２】[0002]
【従来の技術】アクリル系フィラメント糸条は炭素繊維
の原糸（前駆体）として利用されており、優れた工程通
過性を得るために多くの改善技術が開示されている。そ
の製造工程は前駆体であるアクリル系、レーヨン系、ピ
ッチ系あるいはポリビニルアルコール系繊維などを紡糸
する製糸工程、２００〜４００℃の空気雰囲気中で加熱
焼成して、酸化繊維に転換する耐炎化工程、窒素・ヘリ
ウム・アルゴン等の不活性雰囲気中でさらに３００〜２
５００℃に加熱して炭化あるいは黒鉛化する炭化工程や
黒鉛化工程に分けられる（耐炎化工程、炭化工程、黒鉛
化工程をあわせて焼成工程と呼ぶ）。2. Description of the Related Art Acrylic filament yarns are used as raw yarns (precursors) of carbon fibers, and many improvement techniques have been disclosed in order to obtain excellent processability. The manufacturing process is a yarn-making process of spinning precursor acrylic, rayon, pitch-based, or polyvinyl alcohol-based fibers, etc., and a flame resistance process of heating and firing in an air atmosphere at 200 to 400 ° C. to convert into oxidized fibers. 300 to 2 in an inert atmosphere of nitrogen, helium, argon, etc.
It can be divided into a carbonizing step of carbonizing or graphitizing by heating to 500 ° C. and a graphitizing step (the flameproofing step, the carbonizing step, and the graphitizing step are collectively referred to as a firing step).
【０００３】炭素繊維は主に航空・宇宙用途、スポーツ
用途の複合材料素材として使われているが、近年自動車
用途・建材用途など一般産業分野への用途要求が増大し
ている。これら一般産業用途に広く使用するためには炭
素繊維の製造原価を軽減して安価の炭素繊維を大量に提
供する必要がある。従来、炭素繊維に係わる改善は性能
の改善に関するものが多く、製造原価の低減を目的とし
たものは少なかった。本発明者らは炭素繊維の原糸の製
造法に関して処理する糸条のフィラメント数を多く（太
物化）することによって、限られた設備の中で生産量を
増大させること、すなわち設備生産性を向上させること
を検討した。Carbon fibers are mainly used as composite material materials for aviation / space applications and sports applications, but in recent years, application requirements for general industrial fields such as automobile applications and building material applications have been increasing. For widespread use in these general industrial applications, it is necessary to reduce the manufacturing cost of carbon fibers and provide inexpensive carbon fibers in large quantities. Conventionally, many improvements related to carbon fibers have been related to improvement in performance, and few have been aimed at reducing manufacturing costs. The inventors of the present invention increase the production amount in a limited facility by increasing the number of filaments of the yarn to be processed (thickening) regarding the production method of the carbon fiber raw yarn, that is, the facility productivity. Considered to improve.
【０００４】通常、炭素繊維用のアクリル系フィラメン
ト糸条は、アクリル系重合体の有機あるいは無機溶媒溶
液を凝固浴中に紡糸し、熱水中で脱溶媒・延伸を行なっ
た後、油剤を付与し、乾燥緻密化して製造されるが、糸
条に高強度を与えるに十分な延伸倍率をとるため、再度
乾燥緻密化糸を加圧スチーム中で２次延伸することが行
われている。これは熱水浴中の延伸だけでは延伸温度に
上限があり、高倍率延伸が不可能なためである。走行糸
条を加圧スチーム中で連続して延伸するために通常、両
端部にラビリンスなどのシール機構を有するボックス状
あるいはチューブ状の延伸機内へ糸条を導き、延伸機内
の圧力を保持しながら延伸する。Usually, an acrylic filament yarn for carbon fiber is prepared by spinning a solution of an acrylic polymer in an organic or inorganic solvent in a coagulation bath, desolvating and drawing in hot water, and then applying an oil agent. Then, the dried and densified yarn is produced by dry densification. However, the dried and densified yarn is secondarily stretched in the pressure steam again in order to obtain a sufficient draw ratio to give the yarn high strength. This is because the stretching temperature has an upper limit only by stretching in a hot water bath, and high-strength stretching is impossible. In order to continuously stretch the running yarn in the pressurized steam, the yarn is usually guided into a box-shaped or tube-shaped stretching machine having a sealing mechanism such as a labyrinth at both ends, while maintaining the pressure in the stretching machine. Stretch.
【０００５】アクリル系フィラメント糸条の延伸が熱水
やスチームなどのいわゆる湿熱雰囲気で行われる理由の
１つとして、アクリル系繊維は他の熱可塑性繊維と異な
って融点が存在せず、熱の効果だけでは実質的に延伸が
不可能だからである。熱水中あるいはスチーム中では熱
の効果とは別に、水による可塑化効果によって分子鎖が
互いにずれながら延伸されるため、乾熱雰囲気の延伸に
比べて低張力で高倍率の延伸が可能となる。このため、
湿熱でしかも高温条件を取り得る加圧スチーム延伸がア
クリル系糸条の延伸に適用されている。One of the reasons why the stretching of the acrylic filament yarn is carried out in a so-called moist heat atmosphere such as hot water or steam is that acrylic fibers do not have a melting point unlike other thermoplastic fibers, and the effect of heat is high. This is because stretching alone is substantially impossible. In hot water or steam, in addition to the effect of heat, the plasticizing effect of water stretches the molecular chains while shifting them from each other, which makes it possible to stretch at a higher tension with a lower tension compared to stretching in a dry heat atmosphere. . For this reason,
Pressurized steam drawing, which is capable of wet and high temperature conditions, is applied to the drawing of acrylic yarns.
【０００６】ところで、設備生産性を上げるために処理
糸条のフィラメント数を多く（太く）した場合、加圧ス
チーム延伸性は極端に悪化するという問題がある。例え
ば、特公昭６０−３９７６３号公報には、加圧スチーム
延伸後の糸条総繊度と加圧スチーム延伸機のラビリンス
シール部分の小孔径との関係を規定して、総繊度１００
０〜７５００デニールのフィラメント糸条を延伸してい
るが、総繊度７５００デニール以上の太物糸条では十分
な延伸性能が得られていない旨の記載がある。これは糸
条が太物化すると延伸に必要な熱および水分が糸条内部
に伝わりにくくなり、部分的に昇温されていないまま延
伸されるので単繊維が破断するためと推測できる。この
ため湿熱延伸法にあってもその媒体はできるだけ熱伝達
係数の高い液体の方が有利であると考えられる。この考
えは特公昭６０−４７９２４号公報で一部実証されてい
る。すなわち、加圧スチーム延伸直後の糸条水分率を７
〜２０％に保つようにスチーム湿り度を規定することに
より延伸性能を高めようとする考えである。When the number of filaments in the treated yarn is increased (thicker) in order to increase the productivity of the equipment, there is a problem that the pressure steam drawability is extremely deteriorated. For example, Japanese Examined Patent Publication No. 60-39763 discloses a relationship between the total fineness of a yarn after pressure steam drawing and the small hole diameter of a labyrinth seal portion of a pressure steam drawing machine, and a total fineness of 100.
It is stated that filament yarns of 0 to 7500 denier are drawn, but sufficient drawing performance is not obtained with thick yarns having a total fineness of 7500 denier or more. It can be presumed that this is because when the yarn becomes thicker, the heat and moisture necessary for drawing are less likely to be transmitted to the inside of the yarn, and the single fiber is broken because the yarn is drawn without being partially heated. Therefore, even in the wet heat drawing method, it is considered that the medium is liquid which has as high a heat transfer coefficient as possible. This idea is partially proved in Japanese Examined Patent Publication No. 60-47924. That is, the moisture content of the yarn immediately after the pressure steam drawing is 7
The idea is to improve the drawing performance by defining the steam wetness so as to keep the content at -20%.
【０００７】しかしながら、かかる技術はフィラメント
数１０００程度の薄物糸条では効果があるものの、本発
明が目的とするフィラメント数５０００以上の太物糸で
はその効果は不満足なものであった。However, although such a technique is effective for thin yarns having about 1000 filaments, the effect was unsatisfactory for thick yarns having 5000 or more filaments, which is the object of the present invention.
【０００８】[0008]
【発明が解決しようとする課題】本発明の課題は、フィ
ラメント数５０００以上の太物糸条の加圧スチーム延伸
工程において、その延伸性能を高め、工程通過性の優れ
た太物アクリル系フィラメント糸条を提供することにあ
る。SUMMARY OF THE INVENTION An object of the present invention is to increase the drawing performance of a thick acrylic filament yarn having a number of filaments of 5000 or more in a pressure steam drawing process and to provide a thick acrylic filament yarn excellent in process passability. To provide the article.
【０００９】[0009]
【課題を解決するための手段】本発明は上記課題を達成
するために次の構成を有する。すなわち、フィラメント
数５０００以上、単繊維繊度１．５デニール以上のアク
リル系繊維糸条を延伸する際、熱量Ｑ(kcal/hr) 、スチ
ーム圧力や目的とするスチーム状態から決まる定数項Ｋ
(kcal/kg) およびスチーム流量Ｆ(kg/hr) の関係式Ｑ(k
cal/hr) ＝Ｋ・ＦによりＫを４０以上として求められる
熱量Ｑを飽和スチームから定圧下で除熱して得られる湿
りスチーム中で延伸することを特徴とする太物アクリル
系フィラメント糸条の加圧スチーム延伸法である。The present invention has the following constitution in order to achieve the above object. That is, when an acrylic fiber yarn having a filament number of 5000 or more and a single fiber fineness of 1.5 denier or more is stretched, a constant term K determined by the heat quantity Q (kcal / hr), the steam pressure and the target steam state.
(kcal / kg) and steam flow rate F (kg / hr) relational expression Q (k
cal / hr) = K · F in which K is 40 or more, the amount of heat Q, which is obtained by removing heat from saturated steam under constant pressure, is drawn in wet steam, and the addition of thick acrylic filament yarn is characterized. It is a pressure steam drawing method.
【００１０】以下、本発明の詳細と好ましい態様につい
て説明する。本発明に使用するアクリル系繊維糸条の素
材であるアクリル系重合体は、アクリロニトリル９０重
量％以上からなる重合体とするものある。したがって、
１０重量％以内で他のコモノマーと共重合されていても
よい。コモノマーとしては、アクリル酸、メタアクリル
酸、イタコン酸もしくはこれらのメチルエステル、エチ
ルエステル、プロピルエステル、ブチルエステル、アル
カリ金属塩、アンモニウム塩またはアリルスルホン酸、
メタリルスルホン酸、スチレンスルホン酸およびこれら
のアルカリ金属塩等のうち一種または二種以上を用いる
ことができる。なお、アクリル系重合体は、公知の乳化
重合、塊状重合、溶液重合等の重合法を用いて重合さ
れ、さらにこれらの重合体からアクリル系繊維を製造す
るに際しては、ジメチルアセトアミド、ジメチルスルホ
キシド（以下、ＤＭＳＯ）、ジメチルホルムアミド、硝
酸、ロダンソーダ水溶液等を溶媒とするポリマー溶液を
紡糸原液として、通常の湿式紡糸法、乾湿式紡糸法によ
って紡糸し、繊維化することができる。The details and preferred embodiments of the present invention will be described below. The acrylic polymer, which is the material of the acrylic fiber yarn used in the present invention, is a polymer containing 90% by weight or more of acrylonitrile. Therefore,
It may be copolymerized with another comonomer within 10% by weight. As the comonomer, acrylic acid, methacrylic acid, itaconic acid or their methyl ester, ethyl ester, propyl ester, butyl ester, alkali metal salt, ammonium salt or allyl sulfonic acid,
One or more of methallyl sulfonic acid, styrene sulfonic acid and alkali metal salts thereof can be used. Incidentally, the acrylic polymer is polymerized by using a known polymerization method such as emulsion polymerization, bulk polymerization, solution polymerization, etc. Further, when producing an acrylic fiber from these polymers, dimethylacetamide, dimethylsulfoxide (hereinafter , DMSO), dimethylformamide, nitric acid, an aqueous solution of rhodanesoda, etc. as a solvent for spinning, and can be spun into fibers by a conventional wet spinning method or a dry wet spinning method.
【００１１】本発明に使用するアクリル系繊維糸条のフ
ィラメント数は５０００以上、好ましくは１００００以
上とするものである。フィラメント数が５０００未満の
場合には本発明の目的のひとつである設備生産性を向上
させることが困難となるし、延伸性能がさほど問題とは
ならない。これに対し、５０００フィラメント以上の糸
条、さらには１００００フィラメント以上の太物糸条の
延伸には、加圧スチーム延伸機中での熱伝達ならびに水
分の拡散が問題となるため、本発明の効果がより顕著に
あらわれる。The number of filaments of the acrylic fiber yarn used in the present invention is 5,000 or more, preferably 10,000 or more. When the number of filaments is less than 5,000, it is difficult to improve equipment productivity, which is one of the objects of the present invention, and the drawing performance does not become a problem. On the other hand, in the case of drawing a yarn of 5000 filaments or more, and further of a thick yarn of 10,000 filaments or more, heat transfer and moisture diffusion in the pressure steam drawing machine pose problems, so the effect of the present invention Appears more prominently.
【００１２】本発明に使用するアクリル系繊維糸条の単
繊維繊度は１．５デニール以上とするものである。単繊
維繊度が１．５デニール未満では延伸性能に対する効果
がさほど顕著に発揮されない。The single fiber fineness of the acrylic fiber yarn used in the present invention is 1.5 denier or more. When the single fiber fineness is less than 1.5 denier, the effect on the drawing performance is not so remarkable.
【００１３】本発明で最も特徴的なことは、加圧スチー
ム延伸時において、熱量Ｑ(kcal/hr) 、スチーム圧力や
目的とするスチーム状態から決まる定数項Ｋ(kcal/kg)
およびスチーム流量Ｆ(kg/hr) の関係式Ｑ(kcal/hr) ＝
Ｋ・ＦによりＫを４０以上、好ましくは５０〜１５０と
して求められる熱量Ｑを飽和スチームから定圧下で除熱
して得られる湿りスチーム中で延伸することである。The most characteristic feature of the present invention is a constant term K (kcal / kg) determined from the heat quantity Q (kcal / hr), the steam pressure and the target steam state during the pressurized steam drawing.
And steam flow rate F (kg / hr) relational expression Q (kcal / hr) =
Stretching is performed in a wet steam obtained by removing heat from saturated steam under constant pressure to obtain a heat quantity Q, which is determined by K · F so that K is 40 or more, preferably 50 to 150.
【００１４】飽和スチームを一定圧力下で除熱するとス
チームのエンタルピーが下がり、乾き度が下がって湿り
スチームとなる。この除熱量Ｑは、目的とするスチーム
の圧力、乾き度、流量によって決めるべき数値であり、
上記関係式で求められるＫを４０以上、好ましくは５０
〜１５０の範囲に設定することによって、太物アクリル
系フィラメント糸条を良好に延伸できるものである。Ｋ
が４０よりも小さいと除熱が不十分で、乾き度の高いス
チームを供給することになり、延伸性は不十分となる。When the saturated steam is deheated under a constant pressure, the enthalpy of the steam is lowered, the dryness is lowered and the steam becomes wet. This heat removal amount Q is a numerical value that should be determined depending on the target steam pressure, dryness, and flow rate,
K calculated by the above relational expression is 40 or more, preferably 50.
By setting the thickness in the range from 150 to 150, the thick acrylic filament yarn can be satisfactorily drawn. K
Is less than 40, heat removal is insufficient and steam having a high degree of dryness is supplied, resulting in insufficient stretchability.
【００１５】得られるスチームの湿り具合は乾き度計に
よる乾き度測定、あるいは延伸後の糸条水分率から知る
ことができる。本発明においては延伸後の糸条水分率を
２０％以上、好ましくは２５％以上になるよう除熱量を
制御すると効果的である。The wetness of the obtained steam can be known from the dryness measurement by a dryness meter or the moisture content of the yarn after stretching. In the present invention, it is effective to control the heat removal amount so that the moisture content of the yarn after stretching is 20% or more, preferably 25% or more.
【００１６】加圧スチームの除熱は、たとえば、図１に
示すラインフローにより行なうことができる。スチーム
発生源より供給される加圧スチームは、ドレンセパレー
ター２によって余分なスチームドレンを除去された後、
減圧弁５により減圧される。減圧されたスチームは飽和
スチームを得るために一旦熱交換機を通り、冷却水によ
って熱を奪われて加湿され、コントロールバルブ９によ
り所望の圧力に設定された後、再度ドレンをドレンセパ
レーターで除去して飽和スチームを得る。次いで、温度
・流量をコントロールした冷却水１５を流した熱交換機
１４に通して再度加圧スチームを加湿し、湿りスチーム
を得ることができる。上記Ｋは熱交換機１４の熱交換面
積、冷却水１５の温度、流量を調節することによって制
御することができる。The removal of heat from the pressurized steam can be performed, for example, by the line flow shown in FIG. The pressurized steam supplied from the steam source is removed of excess steam drain by the drain separator 2 and then
The pressure is reduced by the pressure reducing valve 5. The depressurized steam passes through a heat exchanger once to obtain saturated steam, is deprived of heat by the cooling water to be humidified, and is set to a desired pressure by the control valve 9, and then drain is removed again by the drain separator. Get saturated steam. Next, the pressurized steam can be re-humidified by passing through the heat exchanger 14 in which the cooling water 15 whose temperature / flow rate is controlled is flowed to obtain wet steam. The above K can be controlled by adjusting the heat exchange area of the heat exchanger 14, the temperature of the cooling water 15, and the flow rate.
【００１７】[0017]
【実施例】以下、実施例により本発明をさらに具体的に
説明する。 （実施例１）アクリロニトリル９９．５モル％，イタコ
ン酸０．５モル％からなる固有粘度［η］が１．８０の
ＡＮ共重合体を２０重量％含むＤＭＳＯ溶液を紡糸原液
として、孔数２４０００の口金からＤＭＳＯと水から成
る凝固浴中に紡出して，２４０００本からなる凝固糸を
得た。この凝固糸を熱水中で水洗し、ついで、５槽から
なり第１槽の入ローラーおよび第５槽の出ローラー以外
はフリーローラーから構成される浴延伸工程に導き、９
２℃の熱水中５倍延伸を行った。次いで、この延伸糸条
をアミノ変性シリコーン（アミノ基の含有量はNH2 とし
て１．０％のもの）をノニルフェノールＥＯ付加物を用
いて乳化した油剤の浴液中に含浸走行させ、油分として
１．０％付与し、次に乾燥緻密化処理を行なって単繊維
繊度２．８ｄのフィラメント糸条を得た。The present invention will be described in more detail with reference to the following examples. (Example 1) A DMSO solution containing 20% by weight of an AN copolymer consisting of 99.5 mol% acrylonitrile and 0.5 mol% itaconic acid and having an intrinsic viscosity [η] of 1.80 was used as a spinning dope, and the pore number was 24000. The spinneret was spun into a coagulation bath consisting of DMSO and water to obtain 24000 coagulated yarns. The coagulated yarn was washed with hot water, and then introduced into a bath stretching process consisting of 5 tanks, which was composed of free rollers except for the entrance roller of the first tank and the exit roller of the fifth tank.
It was stretched 5 times in hot water at 2 ° C. Then, the drawn yarn was impregnated with an amino-modified silicone (having an amino group content of 1.0% as NH 2 ) into a bath solution of an oil agent emulsified with a nonylphenol EO adduct to give an oil content of 1 0.0% and then subjected to a dry densification treatment to obtain a filament yarn having a single fiber fineness of 2.8d.
【００１８】こうして得られた糸条を連続して、両端に
ラビリンスシール機構を有する延伸チューブに導き、ゲ
ージ圧力４．５ Kg/cm2 で加圧スチーム延伸を行ない
（２．８倍延伸）巻取って、単繊維繊度１．０デニー
ル、総繊度が２４０００デニールのアクリロニトリル系
繊維糸条を得た。The yarn thus obtained is continuously introduced into a drawing tube having a labyrinth seal mechanism at both ends, and pressure steam drawing is carried out at a gauge pressure of 4.5 Kg / cm 2 (2.8 times drawing). Then, an acrylonitrile fiber yarn having a single fiber fineness of 1.0 denier and a total fineness of 24,000 denier was obtained.
【００１９】この際、表１で計算されるさまざまな熱量
Ｑを飽和スチームから定圧下で除熱して加圧スチーム延
伸機に供給した。除熱量は図１に示すフロー図中、冷却
水温度、冷却水流量、熱交換面積を変更して設定した。At this time, various heat quantities Q calculated in Table 1 were removed from the saturated steam under constant pressure and supplied to the pressurized steam drawing machine. The heat removal amount was set by changing the cooling water temperature, the cooling water flow rate, and the heat exchange area in the flow chart shown in FIG.
【００２０】延伸性の尺度としては加圧スチーム延伸機
出側糸条の５分間の走行毛羽数を肉眼で計測した数値を
用いた。また糸条水分率は延伸機出糸条をサンプリング
し、ただちに１０５℃中の乾燥機中で２時間乾燥し、乾
燥前後の重量変化から求めた。As a measure of drawability, a numerical value obtained by visually observing the number of running fluffs of the yarn on the delivery side of the pressure steam drawing machine for 5 minutes was used. The moisture content of the yarn was determined by sampling the yarn discharged from the drawing machine, immediately drying it in a dryer at 105 ° C. for 2 hours, and determining the weight change before and after drying.
【００２１】Ｋ値を４０以上に設定することにより走行
毛羽数は激減し、延伸性能が向上することが明らかであ
った。また延伸直後の糸条水分率が２０％以上の時は延
伸性はさらに良好であった。By setting the K value to 40 or more, it was clear that the number of running fluffs was drastically reduced and the drawing performance was improved. Further, when the moisture content of the yarn immediately after drawing was 20% or more, the drawability was further improved.
【００２２】[0022]
【表１】 （実施例２）実施例１と同様の紡糸原液を、孔数がそれ
ぞれ３０００、６０００、１２０００、２４０００の口
金からＤＭＳＯと水から成る凝固浴中に紡出した。その
後、実施例１と同様に水洗、浴中延伸、油剤付与、乾燥
緻密化処理を行なって単繊維繊度２．８デニールのフィ
ラメント糸条を得た。[Table 1] (Example 2) The same spinning dope as in Example 1 was spun into a coagulation bath consisting of DMSO and water through a spinneret having pores of 3000, 6000, 12000 and 24000, respectively. Then, similarly to Example 1, washing with water, drawing in a bath, application of an oil agent, and dry densification treatment were carried out to obtain a filament yarn having a single fiber fineness of 2.8 denier.
【００２３】こうして得られた糸条を連続して、両端に
ラビリンスシール機構を有する延伸チューブに導きゲー
ジ圧力４．５ Kg/cm2 で加圧スチーム延伸を行ない
（２．８倍延伸）巻取って、単繊維繊度１．０デニール
のアクリロニトリル系繊維糸条を得た。The yarn thus obtained is continuously introduced into a drawing tube having a labyrinth seal mechanism at both ends, and pressure steam drawing is carried out at a gauge pressure of 4.5 Kg / cm 2 (drawing by 2.8 times) and winding. Thus, an acrylonitrile fiber yarn having a single fiber fineness of 1.0 denier was obtained.
【００２４】この際、表２に示すようにＫ値を３０と６
０に固定し、先の関係式で計算される熱量Ｑを飽和スチ
ームから定圧下で除熱して加圧スチーム延伸機に供給
し、実施例１と同様の評価を実施した。At this time, as shown in Table 2, the K value is set to 30 and 6.
The amount of heat Q calculated by the above relational expression was fixed to 0, the heat was removed from the saturated steam under constant pressure, and the heat was supplied to the pressurized steam drawing machine, and the same evaluation as in Example 1 was performed.
【００２５】フィラメント数が３０００の時はＫ値の大
きさに関係なく延伸性は良好であったが、５０００フィ
ラメント以上の場合はＫ値を４０以上に規定しないと延
伸性は良好にならなかった。When the number of filaments was 3000, the drawability was good regardless of the K value, but when the number of filaments was 5000 filaments or more, the drawability was not good unless the K value was specified to be 40 or more. ..
【００２６】[0026]
【表２】 [Table 2]
【００２７】[0027]
【発明の効果】本発明の太物アクリル系フィラメント糸
条の加圧スチーム延伸法によれば、太物のアクリル系フ
ィラメントを安定して延伸でき、工程通過性の優れた糸
条を得ることが可能になる。EFFECTS OF THE INVENTION According to the pressure steam drawing method for thick acrylic filament yarns of the present invention, thick acrylic filaments can be stably stretched, and a yarn having excellent processability can be obtained. It will be possible.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の方法に用いる加圧スチームの供給ライ
ンフローである。FIG. 1 is a supply line flow of pressurized steam used in the method of the present invention.
１：加圧スチームライン ２：ドレンセパレーター ３：邪魔板 ４：ドレントラップ ５：減圧弁 ６，１４：熱交換機 ７，１５：冷却水（入） ８，１６：冷却水（出） ９：コントロールバルブ １０：圧力計 １１：流量計 １２：加圧スチーム延伸機 １３：処理糸条 1: Pressurized steam line 2: Drain separator 3: Baffle plate 4: Drain trap 5: Pressure reducing valve 6,14: Heat exchanger 7,15: Cooling water (in) 8, 16: Cooling water (out) 9: Control valve 10: Pressure gauge 11: Flow meter 12: Pressurized steam drawing machine 13: Treated yarn
───────────────────────────────────────────────────── フロントページの続き (72)発明者 奥田 章 愛媛県伊予郡松前町大字筒井1515 東レ株 式会社愛媛工場内 (72)発明者 猿山 秀夫 愛媛県伊予郡松前町大字筒井1515 東レ株 式会社愛媛工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Okuda 1515 Tsutsui, Matsumae-cho, Iyo-gun, Ehime Toray Co., Ltd. Ehime factory (72) Hideo Saruyama 1515 Tsutsui, Matsumae, Iyo-gun, Ehime Toray Co., Ltd. Ehime factory
Claims (1)
１．５デニール以上のアクリル系繊維糸条を延伸する
際、熱量Ｑ(kcal/hr) 、スチーム圧力や目的とするスチ
ーム状態から決まる定数項Ｋ(kcal/kg) およびスチーム
流量Ｆ(kg/hr) の関係式Ｑ(kcal/hr) ＝Ｋ・ＦによりＫ
を４０以上として求められる熱量Ｑを飽和スチームから
定圧下で除熱して得られる湿りスチーム中で延伸するこ
とを特徴とする太物アクリル系フィラメント糸条の加圧
スチーム延伸法。1. A constant term K determined from the heat quantity Q (kcal / hr), the steam pressure and the target steam state when an acrylic fiber yarn having a filament number of 5000 or more and a single fiber fineness of 1.5 denier or more is drawn. (kcal / kg) and steam flow rate F (kg / hr) relational expression Q (kcal / hr) = K · K
Is 40 or more, and the drawing is carried out in wet steam obtained by removing heat from saturated steam under constant pressure, and then drawing in a wet steam drawing method for thick acrylic filament yarns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4006531A JP3044896B2 (en) | 1992-01-17 | 1992-01-17 | Pressurized steam drawing method of thick acrylic filament yarn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4006531A JP3044896B2 (en) | 1992-01-17 | 1992-01-17 | Pressurized steam drawing method of thick acrylic filament yarn |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05195313A true JPH05195313A (en) | 1993-08-03 |
| JP3044896B2 JP3044896B2 (en) | 2000-05-22 |
Family
ID=11640941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4006531A Expired - Fee Related JP3044896B2 (en) | 1992-01-17 | 1992-01-17 | Pressurized steam drawing method of thick acrylic filament yarn |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3044896B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000077282A1 (en) * | 1999-06-15 | 2000-12-21 | Mitsubishi Rayon Co., Ltd. | Acrylic yarn as thick carbon fiber precursor and method for producing the same |
| WO2018168685A1 (en) | 2017-03-15 | 2018-09-20 | 東レ株式会社 | Method for manufacturing acrylonitrile based fiber bundle and method for manufacturing carbon fiber bundle |
| CN113737318A (en) * | 2021-10-14 | 2021-12-03 | 荣成碳纤维科技有限公司 | Carbon fiber steam drafting system and control method thereof |
-
1992
- 1992-01-17 JP JP4006531A patent/JP3044896B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000077282A1 (en) * | 1999-06-15 | 2000-12-21 | Mitsubishi Rayon Co., Ltd. | Acrylic yarn as thick carbon fiber precursor and method for producing the same |
| US6245423B1 (en) | 1999-06-15 | 2001-06-12 | Mitsubishi Rayon Co., Ltd. | Thick acrylic fiber tows for carbon fiber production and methods of producing and using the same |
| GB2367031A (en) * | 1999-06-15 | 2002-03-27 | Mitsubishi Rayon Co | Acrylic yarn as thick carbon fiber precursor and method for producing the same |
| GB2367031B (en) * | 1999-06-15 | 2003-09-03 | Mitsubishi Rayon Co | Acrylic yarn as thick carbon fiber precursor and method for producing the same |
| WO2018168685A1 (en) | 2017-03-15 | 2018-09-20 | 東レ株式会社 | Method for manufacturing acrylonitrile based fiber bundle and method for manufacturing carbon fiber bundle |
| KR20190125392A (en) | 2017-03-15 | 2019-11-06 | 도레이 카부시키가이샤 | Method for producing acrylonitrile-based fiber bundles and method for producing carbon fiber bundles |
| US11286581B2 (en) | 2017-03-15 | 2022-03-29 | Toray Industries, Inc. | Method for manufacturing acrylonitrile based fiber bundle and method for manufacturing carbon fiber bundle |
| CN113737318A (en) * | 2021-10-14 | 2021-12-03 | 荣成碳纤维科技有限公司 | Carbon fiber steam drafting system and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3044896B2 (en) | 2000-05-22 |
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