JPH07145549A - Application of sizing to carbon fiber - Google Patents
Application of sizing to carbon fiberInfo
- Publication number
- JPH07145549A JPH07145549A JP28833093A JP28833093A JPH07145549A JP H07145549 A JPH07145549 A JP H07145549A JP 28833093 A JP28833093 A JP 28833093A JP 28833093 A JP28833093 A JP 28833093A JP H07145549 A JPH07145549 A JP H07145549A
- Authority
- JP
- Japan
- Prior art keywords
- sizing
- yarns
- sizing agent
- carbon fiber
- yarn
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は炭素繊維にサイジング剤
を付与する方法に関する。FIELD OF THE INVENTION The present invention relates to a method for applying a sizing agent to carbon fibers.
【０００２】[0002]
【従来技術】炭素繊維はその卓越した力学的，化学的，
電気的性質および軽量化などにより各種の用途、例え
ば、航空機やロケットなどの航空・宇宙用構造材料、テ
ニスラケット，ゴルフシャフト，釣竿などのスポーツ用
品に広く使用され、さらに船舶、自動車などの運輸機械
用途などの分野にも使用されようとしている。ところ
で、炭素繊維は本質的に剛質で脆く、耐屈曲性や耐擦過
性に乏しいために、その製造工程あるいは高次加工工程
においてローラーとの接触や糸道ガイドでの擦過、ある
いは整経時のオサなどによる擦過あるいは各種の屈曲操
作などによって毛羽が生じ易く、時には糸切れを生じる
ことにもなり兼ねない。このため炭素繊維には各種のサ
イジング剤処理が施され、それによって炭素繊維に集束
性が与えられ、耐屈曲性や耐擦過性を向上させるのが一
般的である。2. Description of the Prior Art Carbon fiber has excellent mechanical, chemical,
Due to its electrical properties and weight reduction, it is widely used in various applications, such as structural materials for aerospace such as aircraft and rockets, sports equipment such as tennis rackets, golf shafts, fishing rods, etc., as well as transportation machinery such as ships and automobiles. It is about to be used in fields such as applications. By the way, since carbon fibers are inherently rigid and brittle, and have poor bending resistance and scratch resistance, contact with rollers, rubbing with a yarn guide, or time-dependent Fluffing is likely to occur due to rubbing with lure or various bending operations, and sometimes thread breakage may occur. For this reason, the carbon fibers are generally treated with various sizing agents, whereby the carbon fibers are made to have a bundling property, and bending resistance and abrasion resistance are generally improved.
【０００３】しかしながら、サイジング剤付与前に毛羽
があると、その部分はサイジング液が過剰に付着し、サ
イジング付着斑が生じる。このようなサイジング付着
斑、特にサイジング付着量の多い部分は糸条が粘着しや
すく、高次加工工程で解舒した場合、サイジング剤の粘
着により毛羽が発生し、最終的には糸切れに波及すると
いう問題が生じる。However, if there is fluff before applying the sizing agent, the sizing liquid excessively adheres to the fluff, and sizing adhesion spots occur. In such sizing adhesion spots, especially in areas with a large amount of sizing, the threads are likely to stick, and when unwound in a higher-order processing step, fluff is generated due to sticking of the sizing agent, and finally the thread breaks. The problem arises.
【０００４】特に炭素繊維の生産性向上のため多糸条化
を図った場合、炭素繊維糸条間隔が狭くなり隣接糸条同
士が接触しやすく毛羽発生の原因となる。このためサイ
ジング付着斑が多くなり、付着斑に起因する糸切れが多
くなるという問題が生ずる。また、隣接糸条間が狭くな
ることにより、糸条間にサイジング液膜が発生しやすく
なり、そのまま乾燥するとサイジング剤の付着斑となる
という新たな問題も発生する。In particular, when the number of yarns is increased in order to improve the productivity of carbon fibers, the spacing between the carbon fiber yarns becomes narrow, and the adjacent yarns easily come into contact with each other, which causes fuzz. Therefore, there is a problem that sizing adhesion spots increase and yarn breakage due to the adhesion spots increases. Further, since the space between the adjacent yarns is narrowed, a sizing liquid film is likely to be generated between the yarns, and if it is dried as it is, a new problem occurs that the sizing agent adheres unevenly.
【０００５】このサイジング剤の付着斑防止に関し、特
開昭５９ー３６７６２号公報はサイジング剤付与後の糸
条を超音波照射処理することを提案している。しかしな
がら、多糸条化が進む今日、糸条１本毎に超音波照射処
理を施すことは設備費アップとなり製造コストが上昇す
る問題がある。With respect to the prevention of uneven adhesion of the sizing agent, Japanese Patent Application Laid-Open No. 59-36762 proposes to subject the yarn after applying the sizing agent to ultrasonic irradiation. However, in today's world where the number of yarns is increasing, there is a problem that performing ultrasonic irradiation treatment on each yarn increases equipment cost and manufacturing cost.
【０００６】さらに、特開昭５９ー３６７６３公報はサ
イジング剤付与時に使用する複数本の溝付ローラーを、
２種類以上の異形状にすることを提案している。しかし
ながら、該方法では溝付きローラー走行により毛羽発生
を招く恐れがある。Further, Japanese Patent Application Laid-Open No. 59-36763 discloses a plurality of grooved rollers used when applying a sizing agent,
It is proposed to make two or more different shapes. However, in this method, fluff may be generated due to running of the grooved roller.
【０００７】[0007]
【発明が解決しようとする課題】本発明の目的は上記従
来技術の問題点を解決すること、即ち、炭素繊維のサイ
ジング処理において比較的安価な設備で、毛羽によって
発生するサイジング剤の付着斑や多糸条化の時のサイジ
ング液膜によって発生するサイジング剤の付着斑を減少
させ、以後の工程での毛羽や糸切れなどの発生を未然に
防止することにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, that is, in the sizing treatment of carbon fiber, with relatively inexpensive equipment, fluffing of the sizing agent caused by fluff and The purpose is to reduce the adhesion unevenness of the sizing agent that is generated by the sizing liquid film at the time of multi-thread formation, and to prevent the occurrence of fluff or yarn breakage in the subsequent steps.
【０００８】[0008]
【課題を解決するための手段】本発明の上記目的は、炭
素繊維糸条にサイジング剤付与するに際し、該炭素繊維
糸条をサイジング剤溶液または分散液中に浸漬した後
に、加圧気体を０．５〜１０ｍ／秒の流速で吹き付ける
ことを特徴とする炭素繊維のサイジング付与方法によっ
て達成できる。The above object of the present invention is to apply a sizing agent to carbon fiber yarns by immersing the carbon fiber yarns in a sizing agent solution or dispersion, and then applying no pressurized gas. This can be achieved by a carbon fiber sizing method characterized by spraying at a flow rate of 0.5 to 10 m / sec.
【０００９】以下、本発明を具体的に説明する。The present invention will be specifically described below.
【００１０】通常、炭素繊維糸条はサイジング剤溶液に
浸漬後、付与したサイジング剤を乾燥させるが、本発明
のサイジング処理における特徴は、サイジング剤付与後
の炭素繊維糸条に圧力空気を吹き付けることにある。す
なわち、炭素繊維のサイジング処理におけるサイジング
剤の付着斑について、本発明者らの研究によると、次の
ことが判明した。Usually, the carbon fiber yarn is dipped in the sizing agent solution, and then the applied sizing agent is dried. The feature of the sizing treatment of the present invention is that the carbon fiber yarn after the sizing agent is applied is blown with pressurized air. It is in. That is, according to the research conducted by the present inventors, the following facts have been found regarding the adhesion unevenness of the sizing agent in the sizing treatment of carbon fibers.
【００１１】炭素繊維は既述したように本質的に剛直で
脆いため、サイジング処理工程前の工程において、既に
ローラー等の接触によって毛羽が発生する。この毛羽の
発生した糸条にサイジング剤を付与した場合、毛羽発生
部分のサイジング付着量は局部的に増大し、付着斑を惹
起することになる。Since carbon fibers are essentially rigid and brittle as described above, fluff is already generated by contact with a roller or the like in the step before the sizing treatment step. When a sizing agent is applied to the fluffy yarn, the sizing adhesion amount at the fluffing portion locally increases, causing adhesion unevenness.
【００１２】また、最近は生産性向上を目的に処理糸条
密度が高められる傾向が顕著であり、糸条間の間隔は隣
接糸条同志が接触するほど狭くなっている。多糸条の炭
素繊維を隣接糸条が接触するほどの狭い間隔で走行させ
た場合、隣接糸条同士の接触で毛羽が発生しやすく、ま
た毛羽発生はなくとも付着したサイジング液の表面張力
により隣接糸条間にサイジング液の液膜が発生し、その
部分のサイジング付着量は正常時の２〜３倍に増大す
る。Further, recently, there is a remarkable tendency that the treated yarn density is increased for the purpose of improving the productivity, and the interval between the yarns becomes narrower as the adjacent yarns come into contact with each other. When the carbon fibers of multiple yarns are run at such a narrow interval that adjacent yarns come into contact with each other, fluffs are likely to occur due to contact between adjacent yarns, and even if fluffs do not occur, the surface tension of the sizing liquid adheres to them. A liquid film of the sizing liquid is generated between the adjacent yarns, and the amount of sizing adhered to that portion is increased to 2-3 times that in the normal state.
【００１３】本発明は、炭素繊維糸条中に存在する毛羽
のため発生するサイジング剤過剰付着の防止および隣接
糸条間のサイジング液膜発生を防止するために、サイジ
ング剤付与後の糸条に加圧気体を吹き付け、サイジング
付着斑を減少させるものである。加圧気体を吹き付ける
ことにより、糸条の毛羽部分に付着した過剰なサイジン
グ剤は均一に除去され、あるいは、サイジング液の表面
張力以上の流速をもつ加圧気体を吹き付けることにより
隣接糸条間の液膜発生は防止できることになる。According to the present invention, in order to prevent excessive adhesion of a sizing agent caused by fluff existing in a carbon fiber yarn and to prevent the formation of a sizing liquid film between adjacent yarns, the yarn after applying the sizing agent is used. A pressurized gas is blown to reduce sizing adhesion spots. By blowing the pressurized gas, the excess sizing agent attached to the fluff portion of the yarn is uniformly removed, or by blowing the pressurized gas having a flow velocity higher than the surface tension of the sizing liquid between the adjacent yarns. Liquid film generation can be prevented.
【００１４】本発明において、加圧気体の流速は処理糸
条直近の実流速を指し、その際の流速範囲は０．５〜１
０ｍ／秒であり，好ましくは１〜５ｍ／秒である。すな
わち、気体流速が０．５ｍ／秒未満では過剰サイジング
液の除去およびサイジング液膜発生防止効果がない。ま
た、流速が１０ｍ／秒を越えると、その流速のため糸条
の毛羽が増大し糸切れが発生する場合がある。In the present invention, the flow velocity of the pressurized gas refers to the actual flow velocity in the immediate vicinity of the treated yarn, and the flow velocity range at that time is 0.5 to 1.
It is 0 m / sec, preferably 1 to 5 m / sec. That is, when the gas flow rate is less than 0.5 m / sec, there is no effect of removing the excess sizing liquid and preventing the formation of a sizing liquid film. Further, if the flow velocity exceeds 10 m / sec, the fluff of the yarn may increase due to the flow velocity and yarn breakage may occur.
【００１５】また、サイジング処理時の糸条の張力は糸
条の振動，ゆれによる毛羽発生防止および過剰張力によ
る毛羽発生防止の観点から、単繊維当たり０．０５〜
１．０g が好ましいが、特に限定されるものではない。Further, the tension of the yarn during the sizing treatment is from 0.05 to 100 per single fiber from the viewpoint of preventing the generation of fluff due to vibration and fluctuation of the yarn and the prevention of fluff due to excessive tension.
1.0 g is preferable, but not particularly limited.
【００１６】本発明における炭素繊維としては、アクリ
ル系，ピッチ系，セルロース系などの各種繊維を前駆体
として公知の方法で得られた、いわゆる炭化糸，黒鉛
糸，またこれらを表面酸化処理したものが含まれる。The carbon fibers in the present invention are so-called carbonized yarns and graphite yarns obtained by a known method using various fibers such as acrylic, pitch and cellulose fibers as precursors, and those obtained by surface oxidation treatment of these. Is included.
【００１７】また、サイジング剤としては、水溶液およ
び／または水分散液，あるいは有機溶剤溶液として用い
られるものであって、炭素繊維に集束性を与え、耐屈曲
性や耐擦過性を向上させ、かつ該炭素繊維を複合材料の
補強繊維として使用した場合に良好な複合材料特性が得
られるサイジング剤であれば好適に用いられるが特に、
水溶液および／または水分散系の場合に前述した表面張
力による液膜の発生が顕著であり、効果が大きい。水溶
液および／または水分散液として用いられるサイジング
剤には、例えばポリアルキレンオキサイドおよびその誘
導体、ポリビニルピロリドンおよびその誘導体、ポリビ
ニルアルコールなどの水溶性樹脂、あるいは各種界面活
性剤を添加することによって水分散性となるエポキシ樹
脂、不飽和ポリエステル樹脂など公知の各種樹脂が挙げ
られるが、特に、上記の樹脂に限定されるものではな
い。なお、これらのサイジング剤は、２種類以上を配合
してもよい。The sizing agent is used as an aqueous solution and / or an aqueous dispersion, or an organic solvent solution, which imparts a sizing property to the carbon fibers, improves the bending resistance and the abrasion resistance, and A sizing agent that can obtain good composite material properties when the carbon fiber is used as a reinforcing fiber of the composite material is preferably used, but in particular,
In the case of an aqueous solution and / or an aqueous dispersion system, the generation of a liquid film due to the above-mentioned surface tension is remarkable and the effect is large. To the sizing agent used as an aqueous solution and / or an aqueous dispersion, for example, a polyalkylene oxide and its derivative, polyvinylpyrrolidone and its derivative, a water-soluble resin such as polyvinyl alcohol, or various surfactants may be added to disperse the water. Various known resins such as an epoxy resin and an unsaturated polyester resin that can be used are listed, but are not particularly limited to the above resins. In addition, you may mix | blend 2 or more types of these sizing agents.
【００１８】また、有機溶剤溶液として用いられるサイ
ジング剤には、例えばグリシジルエーテル型、グリシジ
ルエステル型、グリシジルアミン型、脂肪族エポキサイ
ド型などのエポキシ樹脂、不飽和ポリエステル樹脂、ポ
リアミド樹脂、ポリイミド樹脂など公知の各種樹脂が挙
げられる。As the sizing agent used as the organic solvent solution, for example, glycidyl ether type, glycidyl ester type, glycidyl amine type, aliphatic epoxide type epoxy resin, unsaturated polyester resin, polyamide resin, polyimide resin and the like are known. Various resins are listed.
【００１９】これらサイジング剤を溶解させる有機溶剤
としては、上記樹脂を安定に溶解させるものであればよ
く、例えば、ベンゼン、トルエン、キシレンなどの芳香
族炭化水素類、アセトン、メチルエチルケトンなどのケ
トン類、四塩化炭素、トリクレン、クロロホルムなどの
ハロゲン化炭化水素類、あるいはセロソルブなどの変性
エーテル類などが挙げられるが、特に、上記の樹脂に限
定されるものではない。沸点、工業的な取扱いの良さで
適宜選択すれば良い。なお、有機溶媒系サイジング剤は
２種類以上を配合してもよい。The organic solvent in which these sizing agents are dissolved may be any solvent which can dissolve the above resins in a stable manner, and examples thereof include aromatic hydrocarbons such as benzene, toluene and xylene, ketones such as acetone and methyl ethyl ketone, and the like. Examples thereof include halogenated hydrocarbons such as carbon tetrachloride, trichlene, and chloroform, and modified ethers such as cellosolve, but are not particularly limited to the above resins. It may be appropriately selected depending on the boiling point and industrial handling. Two or more kinds of organic solvent-based sizing agents may be blended.
【００２０】サイジング剤の水溶液、水分散液あるいは
有機溶媒溶液はサイジング剤の特性に応じて従来公知の
方法で調合すればよく、ただし、サイジング剤の浴濃度
は通常０．５〜１０重量％の範囲が好適に用いられる。
サイジング剤の炭素繊維に対する付着量は、サイジング
剤の種類によって多少の差異があるが、炭素繊維当たり
０．２〜５重量％の範囲が一般的である。The aqueous solution, aqueous dispersion or organic solvent solution of the sizing agent may be prepared by a conventionally known method according to the characteristics of the sizing agent, provided that the bath concentration of the sizing agent is usually 0.5 to 10% by weight. Ranges are preferably used.
The amount of the sizing agent attached to the carbon fibers varies somewhat depending on the type of the sizing agent, but is generally in the range of 0.2 to 5% by weight per carbon fiber.
【００２１】[0021]
【実施例】以下、本発明を実施例により具体的に説明す
る。なお、本例中の毛羽数、糸切れ本数は次の方法で求
めた。EXAMPLES The present invention will be specifically described below with reference to examples. The number of fluffs and the number of yarn breaks in this example were determined by the following methods.
【００２２】（１）毛羽数 炭素繊維糸条に１デニールあたり０．０９g の張力下、
３ｍ／分の糸速で走行させて側面から繊維糸条に対し直
角にレーザー光を照射し、毛羽数を毛羽検出装置で検出
し、個／ｍで表示する。(1) Number of fluff A carbon fiber yarn was subjected to a tension of 0.09 g per denier,
It is run at a yarn speed of 3 m / min, laser light is emitted from the side surface at a right angle to the fiber yarn, and the number of fluffs is detected by the fluff detection device and displayed in pieces / m.
【００２３】（２）糸切れ本数 通常の方法で巻き上げた炭素繊維糸条のボビンを縦取り
法で５０ｍ／分の速度で解舒した時の５０本あたりの糸
切れ発生本数として表した。(2) Number of yarn breakages The number of yarn breakages per 50 yarns when unwinding a bobbin of a carbon fiber yarn wound up by a normal method at a speed of 50 m / min by a vertical winding method was expressed.
【００２４】[0024]
【実施例１】単繊維繊度が０．６d 、フィラメント数が
１２０００本の無撚のアクリル系炭素繊維糸条を５０本
用い、１０ｍ／分の速度，糸条の張力を単繊維当たり
０．２g の条件で、図１に示したサイジング槽を使用
し、サイジング剤を付与した後、糸条から数cm離れたパ
イプより直径数mmの孔から流速を０．５〜１０ｍ／秒の
範囲で変更した常温空気を炭素繊維糸条に約０．５秒間
吹き付け、常法どおり巻き取った。Example 1 Fifty untwisted acrylic carbon fiber yarns having a single fiber fineness of 0.6d and a number of filaments of 12,000 were used, a speed of 10 m / min, and a tension of the yarn was 0.2 g per single fiber. Using the sizing tank shown in Fig. 1 under the conditions of No. 1 and applying the sizing agent, the flow velocity is changed within the range of 0.5 to 10 m / sec from the hole with a diameter of several mm from the pipe several cm away from the yarn. The ambient temperature air was blown onto the carbon fiber yarn for about 0.5 seconds and wound up in the usual manner.
【００２５】かくして得られた５０本の炭素繊維糸条
の、同一糸条内のサイジング剤の付着量ばらつき（ＣＶ
値）および糸条５０本間のサイジング剤の付着量ばらつ
き（ＣＶ値）、解舒時の糸切れ状態を表１に示した。な
お、サイジング溶液には樹脂４％からなる水系エマルジ
ョン溶液を用い、サイジング剤の付着量は炭素繊維重量
に対し１．２％であった。Among the 50 carbon fiber yarns thus obtained, the variation in the amount of sizing agent adhered within the same yarn (CV
Table 1 shows the values), the variation in the amount of the sizing agent adhered between the 50 yarns (CV value), and the yarn breakage state during unwinding. As the sizing solution, an aqueous emulsion solution containing 4% resin was used, and the amount of the sizing agent attached was 1.2% based on the weight of carbon fiber.
【００２６】[0026]
【比較例１】常温空気の流速を０、０．３、１２ｍ／秒
にした以外は実施例１の記述と同じ方法で炭素繊維糸条
を巻き取った。かくして得られた５０本の炭素繊維糸条
の、同一糸条内のサイジング剤の付着量ばらつき（ＣＶ
値）および糸条５０本間のサイジング剤の付着量ばらつ
き（ＣＶ値）、解舒時の糸切れ状態を表１に示した。流
速が０．５ｍ／秒未満では、サイジング付着のＣＶ値が
高く、毛羽，糸切れも多くなる。また、流速が１０ｍ／
秒を越えると毛羽，糸切れが増加することが判る。[Comparative Example 1] A carbon fiber yarn was wound in the same manner as described in Example 1 except that the flow rates of normal temperature air were changed to 0, 0.3 and 12 m / sec. The 50 carbon fiber yarns thus obtained have the same sizing agent adhesion amount variation (CV) within the same yarn.
Table 1 shows the values), the variation in the amount of the sizing agent adhered between the 50 yarns (CV value), and the yarn breakage state during unwinding. If the flow velocity is less than 0.5 m / sec, the CV value of sizing adhesion is high, and fluff and yarn breakage increase. The flow velocity is 10m /
It can be seen that fluff and yarn breakage increase when the time is exceeded.
【００２７】[0027]
【表１】 [Table 1]
【００２８】[0028]
【発明の効果】本発明は炭素繊維糸条のサイジング処理
において、サイジング剤付与後の該糸条に加圧気体を吹
付けるという全く新規な手段によって、炭素繊維糸条中
に内在する毛羽によって発生するサイジング剤の過剰付
着あるいはサイジング液の表面張力によって発生する隣
接糸条間のサイジング液膜発生が著しく抑制される。従
って、炭素繊維に対するサイジング剤の付着斑が大幅に
減少し、以下の工程中での毛羽や糸切れの発生が未然に
防止できるという炭素繊維製造上、顕著な効果を奏す。INDUSTRIAL APPLICABILITY In the sizing treatment of a carbon fiber yarn, the present invention is generated by the fluff contained in the carbon fiber yarn by a completely new means of blowing a pressurized gas to the yarn after applying the sizing agent. The excessive deposition of the sizing agent or the surface tension of the sizing liquid significantly suppresses the generation of the sizing liquid film between the adjacent yarns. Therefore, the adhesion unevenness of the sizing agent on the carbon fibers is significantly reduced, and it is possible to prevent the occurrence of fluff and yarn breakage in the following steps, which is a remarkable effect in the production of carbon fibers.
【図１】本発明にかかるサイジング処理設備の一例を示
す模式図である。FIG. 1 is a schematic diagram showing an example of a sizing treatment facility according to the present invention.
１：ローラー ２：被処理糸条 ３：サイジング液 ４：加圧気体の供給パイプ ５：加圧気体（空気） 1: Roller 2: Treated yarn 3: Sizing liquid 4: Pressurized gas supply pipe 5: Pressurized gas (air)
Claims (1)
し、該炭素繊維糸条をサイジング剤溶液または分散液中
に浸漬した後に、加圧気体を０．５〜１０ｍ／秒の流速
で吹き付けることを特徴とする炭素繊維のサイジング付
与方法。1. When applying a sizing agent to a carbon fiber yarn, the pressurized gas is blown at a flow rate of 0.5 to 10 m / sec after the carbon fiber yarn is immersed in a sizing agent solution or dispersion. A method for imparting sizing of carbon fiber, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28833093A JPH07145549A (en) | 1993-11-17 | 1993-11-17 | Application of sizing to carbon fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28833093A JPH07145549A (en) | 1993-11-17 | 1993-11-17 | Application of sizing to carbon fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07145549A true JPH07145549A (en) | 1995-06-06 |
Family
ID=17728796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28833093A Pending JPH07145549A (en) | 1993-11-17 | 1993-11-17 | Application of sizing to carbon fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07145549A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013023785A (en) * | 2011-07-21 | 2013-02-04 | Mitsubishi Rayon Co Ltd | Method for producing carbon fiber bundle impregnated with sizing agent liquid |
| JP2015200051A (en) * | 2014-03-31 | 2015-11-12 | 帝人株式会社 | Method for producing fiber bundle |
| WO2019012856A1 (en) | 2017-07-10 | 2019-01-17 | 東レ株式会社 | Method for manufacturing carbon fiber bundles with sizing agent applied |
| CN112048854A (en) * | 2020-09-11 | 2020-12-08 | 江苏恒神股份有限公司 | Carbon fiber bundle for winding forming and preparation method and application thereof |
| CN114182452A (en) * | 2021-12-14 | 2022-03-15 | 荣成碳纤维科技有限公司 | Carbon fiber sizing system with doubling prevention drying device and sizing and drying process |
-
1993
- 1993-11-17 JP JP28833093A patent/JPH07145549A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013023785A (en) * | 2011-07-21 | 2013-02-04 | Mitsubishi Rayon Co Ltd | Method for producing carbon fiber bundle impregnated with sizing agent liquid |
| JP2015200051A (en) * | 2014-03-31 | 2015-11-12 | 帝人株式会社 | Method for producing fiber bundle |
| WO2019012856A1 (en) | 2017-07-10 | 2019-01-17 | 東レ株式会社 | Method for manufacturing carbon fiber bundles with sizing agent applied |
| KR20190141015A (en) | 2017-07-10 | 2019-12-20 | 도레이 카부시키가이샤 | Manufacturing method of sizing agent imparted carbon fiber bundle |
| CN112048854A (en) * | 2020-09-11 | 2020-12-08 | 江苏恒神股份有限公司 | Carbon fiber bundle for winding forming and preparation method and application thereof |
| CN114182452A (en) * | 2021-12-14 | 2022-03-15 | 荣成碳纤维科技有限公司 | Carbon fiber sizing system with doubling prevention drying device and sizing and drying process |
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