JP2015196921A - Method for manufacturing carbon fiber package - Google Patents

Method for manufacturing carbon fiber package Download PDF

Info

Publication number
JP2015196921A
JP2015196921A JP2014076030A JP2014076030A JP2015196921A JP 2015196921 A JP2015196921 A JP 2015196921A JP 2014076030 A JP2014076030 A JP 2014076030A JP 2014076030 A JP2014076030 A JP 2014076030A JP 2015196921 A JP2015196921 A JP 2015196921A
Authority
JP
Japan
Prior art keywords
temperature
carbon fiber
furnace
fiber bundle
flameproofing
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
Application number
JP2014076030A
Other languages
Japanese (ja)
Inventor
明人 畑山
Akihito Hatayama
明人 畑山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Rayon Co Ltd
Original Assignee
Mitsubishi Rayon Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Priority to JP2014076030A priority Critical patent/JP2015196921A/en
Publication of JP2015196921A publication Critical patent/JP2015196921A/en
Pending legal-status Critical Current

Links

Landscapes

  • Inorganic Fibers (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a method for efficiently manufacturing a carbon fiber package.SOLUTION: A method has (A) a stationary operation condition and (B) an operation shutdown condition and satisfies following conditions in (B) the operation shutdown condition. (4) rising temperature in one or more temperature range excluding a most downstream part of a flame-resistant furnace and the temperature after temperature rising is 93% to 99% based on the temperature of the most downstream part. (5) maintaining status of temperature rising of the (4) for 10% to 40% based on time when a fiber bundle stays in the flame resistant furnace. (6) stopping heating by a heater after the (5). (7) carbonization treatment of the flame resistant fiber bundle existing out of the flame resistant furnace to prepare a carbon fiber package. (8) stopping operations of the carbonization furnace and the taking up device after the (7).

Description

本発明は、炭素繊維パッケージの製造方法に関する。   The present invention relates to a method for manufacturing a carbon fiber package.

炭素繊維の製造は例えば以下の方法で行われる。即ち炭素繊維前駆体繊維束、例えばポリアクリロニトリル系繊維束を、ガイドローラを介して折り返し、耐炎化炉の熱処理室内を多段に走行させ、200℃〜300℃の熱風によって加熱し、所望の耐炎化密度を有した耐炎化繊維束を製造し、その後不活性ガス中で300℃〜2500℃の温度範囲で炭素化処理し、炭素繊維束を得る(例えば非特許文献1)。得られた炭素繊維束を、必要に応じて表面処理、サイズ処理をした後、巻き取り機で巻き取って炭素繊維パッケージを得る。   The production of carbon fiber is performed, for example, by the following method. That is, a carbon fiber precursor fiber bundle, for example, a polyacrylonitrile fiber bundle is folded back through a guide roller, is run in multiple stages in a heat treatment chamber of a flameproofing furnace, and is heated by hot air of 200 ° C. to 300 ° C. to achieve a desired flame resistance. A flame-resistant fiber bundle having a density is manufactured, and then carbonized in an inert gas at a temperature range of 300 ° C. to 2500 ° C. to obtain a carbon fiber bundle (for example, Non-Patent Document 1). The obtained carbon fiber bundle is subjected to surface treatment and size treatment as necessary, and then wound up by a winder to obtain a carbon fiber package.

炭素繊維の工業的製造は、各プロセスを連続で行う。これは言い換えると、あるプロセスを行うにあたっては、その前までのプロセスが十分に行われている必要があることを意味する。例えば炭素化処理するにあたっては、十分に耐炎化処理されていない繊維束を用いると、炭素化処理の途中で切断する恐れがある。   In the industrial production of carbon fiber, each process is performed continuously. In other words, in order to perform a certain process, it means that the previous process needs to be sufficiently performed. For example, when a carbonization treatment is performed, if a fiber bundle that has not been sufficiently flameproofed is used, there is a risk of cutting during the carbonization treatment.

ところで炭素繊維の工業的製造においては、品種の切り替えや定期メンテナンス等を行うために、連続運転を止める必要が生じる。この際、連続運転を止めた時点で耐炎化処理を終了していた繊維束は、その後に炭素化処理を行えば、炭素繊維束とすることは可能である。しかしながらこのような耐炎化繊維束は、その上流側において耐炎化処理が十分になされていない部位と連続している。従って耐炎化処理を終了していた繊維束を全て炭素化処理し切ろうと欲しても、耐炎化処理が十分になされていない部位が炭素化炉に導入されてしまうため、処理の途中で切断する恐れがある。故に安全性を重視するならば、これらの繊維束は廃棄する。その結果製品歩留りが低下する。   By the way, in the industrial production of carbon fiber, it is necessary to stop the continuous operation in order to change the product type, perform periodic maintenance, or the like. At this time, the fiber bundle that has been subjected to the flameproofing treatment when the continuous operation is stopped can be made into a carbon fiber bundle by performing carbonization treatment thereafter. However, such a flame-resistant fiber bundle is continuous with a portion that is not sufficiently flame-resistant on the upstream side. Therefore, even if it is desired to carbonize all the fiber bundles that have been subjected to the flameproofing treatment, a part that is not sufficiently flameproofed is introduced into the carbonization furnace, so that it is cut in the middle of the treatment. There is a fear. Therefore, if safety is important, these fiber bundles are discarded. As a result, product yield decreases.

炭素繊維の応用技術、炭素繊維懇話会企画監修、1984年株式会社シーエムシー出版Applied technology of carbon fiber, supervised planning of carbon fiber social gathering, 1984 CMC Publishing

本発明は、上記課題を解決するためになされたものであって、炭素繊維パッケージを歩留り高く得ることができる製造方法を提供する。   The present invention has been made to solve the above-described problems, and provides a manufacturing method capable of obtaining a carbon fiber package with a high yield.

本発明の要旨は、以下の(A)及び(B)を満足する炭素繊維パッケージの製造方法である。
(A)定常運転条件
(1)シート状に広げた炭素繊維前駆体繊維束を耐炎化炉に導入し、200℃〜300℃の温度範囲のいずれかで耐炎化処理し、耐炎化繊維束を得る。
(2)前記耐炎化繊維束を炭素化炉に導入し、300℃〜2500℃の温度範囲のいずれかで炭素化処理し、得られた炭素繊維束を巻き取り機で巻き取り、炭素繊維パッケージを得る。
(3)前記耐炎化炉は、ヒーターにより加熱された2以上の温度領域を有し、下流側の温度が上流側の温度より高い。
(B)運転停止条件
(4)前記耐炎化炉の、最下流部を除く一つ以上の温度領域において昇温し、昇温後の温度は、前記最下流部の温度に対し93%以上99%以下である。
(5)前記(4)の昇温された状態を、繊維束が前記耐炎化炉中に滞在する時間に対し、10%以上40%以下の間維持する。
(6)前記(5)の後、ヒーターによる加熱を停止する。
(7)ヒーターによる加熱を停止した際に、前記耐炎化炉の外にあった耐炎化繊維束を、前記(2)記載の処理を行い、炭素繊維パッケージを得る。
(8)前記(7)の後、前記炭素化炉及び前記巻き取り機の運転を停止する。
The gist of the present invention is a method for producing a carbon fiber package that satisfies the following (A) and (B).
(A) Steady operation conditions (1) A carbon fiber precursor fiber bundle spread in a sheet shape is introduced into a flameproofing furnace and subjected to a flameproofing treatment in any temperature range of 200 ° C to 300 ° C. obtain.
(2) The flame-resistant fiber bundle is introduced into a carbonization furnace, carbonized in any temperature range of 300 ° C. to 2500 ° C., and the resulting carbon fiber bundle is wound up by a winder to obtain a carbon fiber package. Get.
(3) The flameproofing furnace has two or more temperature regions heated by a heater, and the downstream temperature is higher than the upstream temperature.
(B) Operation stop condition (4) The temperature is raised in one or more temperature regions excluding the most downstream portion of the flameproofing furnace, and the temperature after the temperature rise is 93% or more and 99% of the temperature in the most downstream portion. % Or less.
(5) Maintain the heated state of (4) for 10% to 40% with respect to the time during which the fiber bundle stays in the flameproofing furnace.
(6) After (5), heating by the heater is stopped.
(7) When the heating by the heater is stopped, the flame-resistant fiber bundle that was outside the flame-proofing furnace is subjected to the treatment described in (2) to obtain a carbon fiber package.
(8) After (7), the operation of the carbonization furnace and the winder is stopped.

本発明の炭素繊維の製造方法によれば、炭素繊維パッケージを歩留り高く得ることができる。   According to the carbon fiber manufacturing method of the present invention, a carbon fiber package can be obtained with a high yield.

本発明の実施形態を以下詳細に説明する。
本発明の製造方法は、以下の(A)定常運転条件を有する。
(1)シート状に広げた炭素繊維前駆体繊維束を耐炎化炉に導入し、200℃〜300℃の温度範囲のいずれかで耐炎化処理し、耐炎化繊維束を得る。
(2)前記耐炎化繊維束を炭素化炉に導入し、300℃〜2500℃の温度範囲のいずれかで炭素化処理し、得られた炭素繊維束を巻き取り機で巻き取り、炭素繊維パッケージを得る。
(3)前記耐炎化炉は、ヒーターにより加熱された2以上の温度領域を有し、下流側の温度が上流側の温度より高い。
Embodiments of the present invention will be described in detail below.
The production method of the present invention has the following (A) steady operation conditions.
(1) A carbon fiber precursor fiber bundle spread in a sheet shape is introduced into a flameproofing furnace and subjected to a flameproofing treatment in any temperature range of 200 ° C to 300 ° C to obtain a flameproofing fiber bundle.
(2) The flame-resistant fiber bundle is introduced into a carbonization furnace, carbonized in any temperature range of 300 ° C. to 2500 ° C., and the resulting carbon fiber bundle is wound up by a winder to obtain a carbon fiber package. Get.
(3) The flameproofing furnace has two or more temperature regions heated by a heater, and the downstream temperature is higher than the upstream temperature.

本発明の炭素繊維の製造方法は、まずシート状に広げた炭素繊維前駆体繊維束を耐炎化炉に導入し、200℃〜300℃の温度範囲いずれかで耐炎化処理する。   In the method for producing carbon fibers of the present invention, first, a carbon fiber precursor fiber bundle spread in a sheet shape is introduced into a flameproofing furnace and subjected to a flameproofing treatment in any temperature range of 200 ° C to 300 ° C.

炭素繊維前駆体繊維束は、例えばポリアクリロニトリル繊維、レーヨン繊維等の前駆体繊維を使用することができることが広く知られている。中でもポリアクリロニトリル繊維は、高品質の炭素繊維を製造することができる。   As the carbon fiber precursor fiber bundle, it is widely known that precursor fibers such as polyacrylonitrile fiber and rayon fiber can be used. Above all, polyacrylonitrile fiber can produce high-quality carbon fiber.

炭素繊維前駆体繊維束の耐炎化処理は発熱反応である。これの熱暴走を防ぐため、炭素繊維前駆体繊維束をシート状に広げた状態とし、これに熱風を当てながら熱処理を行うことも、広く知られている。熱風はシート状に広げた炭素繊維前駆体繊維束と平行に当てても、垂直に当てても良い。これを如何に行うかは、当業者であれば容易に設計することができる。   The flameproofing treatment of the carbon fiber precursor fiber bundle is an exothermic reaction. In order to prevent this thermal runaway, it is also widely known that the carbon fiber precursor fiber bundle is spread in a sheet shape and heat treatment is performed while hot air is applied thereto. The hot air may be applied parallel to the carbon fiber precursor fiber bundle spread in a sheet shape or may be applied vertically. A person skilled in the art can easily design how to do this.

耐炎化炉は、ヒーターにより加熱された2以上の温度領域を有する。ヒーターは例えば電気ヒーター等、公知のものを用いることができる。温度領域は2以上設けると、短時間で安定して耐炎化処理を行うことができる。各領域の温度は、下流側の温度が上流側の温度より高い。各領域の温度は、処理時間等を考慮して設定する。例えば3つの温度領域に分ける場合、最上流部の温度は200℃〜240℃、中間部の温度は230〜260℃、最下流部の温度は250℃〜300℃程度とすればよい。耐炎化の時間は、得たい耐炎化繊維の密度と温度に応じて、当業者の常識に基づいて定めることができる。例えば50分〜120分程度である。   The flameproofing furnace has two or more temperature regions heated by a heater. As the heater, for example, a known one such as an electric heater can be used. When two or more temperature regions are provided, flameproofing treatment can be performed stably in a short time. In each region, the downstream temperature is higher than the upstream temperature. The temperature of each region is set in consideration of the processing time and the like. For example, when dividing into three temperature ranges, the temperature of the most upstream part may be 200 ° C. to 240 ° C., the temperature of the middle part may be 230 to 260 ° C., and the temperature of the most downstream part may be about 250 ° C. to 300 ° C. The flameproofing time can be determined based on common knowledge of those skilled in the art according to the density and temperature of the flameproofed fiber to be obtained. For example, it is about 50 minutes to 120 minutes.

耐炎化処理に用いる耐炎化炉、及びその処理条件は、公知の技術を使用することができる。例えば特開昭62−228865号公報、特開平11−173761号公報、特開2000−136441号公報、特開2004−143647号公報に開示された構造の耐炎化炉を用いることができる。これらの耐炎化炉は、炭素繊維前駆体繊維束を、熱処理室内で多段に走行させて耐炎化処理を行う。   A well-known technique can be used for the flame-proofing furnace used for the flame-proofing process and its processing conditions. For example, flameproofing furnaces having structures disclosed in Japanese Patent Application Laid-Open Nos. 62-228865, 11-173661, 2000-136441, and 2004-143647 can be used. These flameproofing furnaces perform the flameproofing treatment by causing the carbon fiber precursor fiber bundles to travel in multiple stages in the heat treatment chamber.

耐炎化繊維束を得たあと、前記耐炎化繊維束を炭素化炉に導入し、300℃〜2500℃の温度範囲のいずれかで炭素化処理し、炭素繊維束を得る。得られた炭素繊維束を、必要に応じて表面処理、サイズ処理し、その後巻き取り機で巻き取って炭素繊維パッケージを得る。これらの処理についても、その目的に応じて公知の技術を使用することができる。   After obtaining the flame-resistant fiber bundle, the flame-resistant fiber bundle is introduced into a carbonization furnace and carbonized in any temperature range of 300 ° C. to 2500 ° C. to obtain a carbon fiber bundle. The obtained carbon fiber bundle is subjected to surface treatment and size treatment as necessary, and then wound up with a winder to obtain a carbon fiber package. Also for these treatments, known techniques can be used according to the purpose.

上述のような定常運転条件を必要なだけ、例えば20日間連続で行ったあと、以下の条件で運転停止を行う。
(B)運転停止条件
(4)前記耐炎化炉の、最下流部を除く一つ以上の温度領域において昇温し、昇温後の温度は、前記最下流部の温度に対し93%以上99%以下である。
(5)前記(4)の昇温された状態を、繊維束が前記耐炎化炉中に滞在する時間に対し、10%以上40%以下の間維持する。
(6)前記(5)の後、ヒーターによる加熱を停止する。
(7)ヒーターによる加熱を停止した際に、耐炎化炉の外にあった耐炎化繊維束に対し、前記(2)記載の処理を行い、炭素繊維パッケージを得る。
(8)前記(7)の後、前記炭素化炉及び前記巻き取り機の運転を停止する。
For example, after the continuous operation conditions as described above are necessary for 20 consecutive days, the operation is stopped under the following conditions.
(B) Operation stop condition (4) The temperature is raised in one or more temperature regions excluding the most downstream portion of the flameproofing furnace, and the temperature after the temperature rise is 93% or more and 99% of the temperature in the most downstream portion. % Or less.
(5) Maintain the heated state of (4) for 10% to 40% with respect to the time during which the fiber bundle stays in the flameproofing furnace.
(6) After (5), heating by the heater is stopped.
(7) When the heating by the heater is stopped, the treatment described in (2) is performed on the flameproof fiber bundle that was outside the flameproofing furnace to obtain a carbon fiber package.
(8) After (7), the operation of the carbonization furnace and the winder is stopped.

前記耐炎化炉における昇温は、最下流部を除く一つ以上の温度領域において行う。このとき、昇温後の温度は、前記最下流部の温度に対し93%以上99%以下である。そして、この昇温された状態を、繊維束が前記耐炎化炉中に滞在する時間に対し、10%以上40%以下の間維持する。そしてその後ヒーターによる加熱を停止する。   The temperature increase in the flameproofing furnace is performed in one or more temperature regions excluding the most downstream portion. At this time, the temperature after the temperature rise is 93% or more and 99% or less with respect to the temperature of the most downstream portion. And this heated state is maintained for 10% or more and 40% or less with respect to the time during which the fiber bundle stays in the flameproofing furnace. Then, heating by the heater is stopped.

ヒーターによる加熱を停止すると、前記耐炎化炉中の温度は低下していく。しかしながら上記のような操作を行うと、最下流部を除く一つ以上の温度領域において、予め昇温された温度領域で、目的とする密度に近いか、あるいはそれ以上の密度となるまで耐炎化処理が行われている。この予め昇温された温度領域で耐炎化処理が行われた繊維束の部位は、ヒーターによる加熱を停止した時点において、既に耐炎化処理が終了し、耐炎化炉の外にあった繊維束と、連続する部位である。従ってこの部位が耐炎化炉を出て、炭素化炉に導入されたとしても、この部位において繊維束が切断することはない。   When heating by the heater is stopped, the temperature in the flameproofing furnace decreases. However, when the above operation is performed, flame resistance is achieved in one or more temperature regions excluding the most downstream portion until the density is close to or higher than the target density in the temperature region that has been pre-heated. Processing is in progress. The portion of the fiber bundle that has been subjected to flameproofing treatment in the temperature range that has been preliminarily heated, when the heating by the heater is stopped, the flameproofing treatment has already ended, and the fiber bundle that was outside the flameproofing furnace and , A continuous part. Therefore, even if this part leaves the flameproofing furnace and is introduced into the carbonization furnace, the fiber bundle is not cut at this part.

なお、前記耐炎化炉中の最下流部において昇温を行わないのは、連続運転を止める際に運転条件と異なる耐炎化の温度で処理された繊維束が巻き取られることを防ぐためである。   The reason why the temperature is not raised at the most downstream portion in the flameproofing furnace is to prevent the fiber bundle treated at a flameproofing temperature different from the operating conditions from being taken up when stopping the continuous operation. .

昇温後の温度を前記最下流部の温度に対し93%以上99%以下とし、この昇温された状態を、繊維束が前記耐炎化炉中に滞在する時間に対し、10%以上40%以下の間維持するのは、ヒーターによる加熱を停止してから連続運転を停止するまでの間、耐炎化から出る繊維束の密度を目的とする密度、あるいはそれ以上の密度に保つためである。   The temperature after the temperature rise is set to 93% or more and 99% or less with respect to the temperature of the most downstream portion, and the heated state is 10% or more and 40% to the time during which the fiber bundle stays in the flameproofing furnace. The reason for maintaining for the following is to keep the density of the fiber bundles coming out of flame resistance at the target density or higher from when the heating by the heater is stopped until the continuous operation is stopped.

また、昇温を行う温度領域は一つでもよいし、最下流部を除く全部でもよい。前記耐炎化炉中で隣接する温度領域同士の温度変化率が4〜8%であると、目的とする密度の耐炎化繊維束が得られ、かつ耐炎化炉におけるスモークを防止できるため、好ましい。   Moreover, the temperature range which heats up may be one, and all except the most downstream part may be sufficient as it. It is preferable that the temperature change rate between adjacent temperature regions in the flameproofing furnace is 4 to 8% because a flameproof fiber bundle having a target density can be obtained and smoke can be prevented in the flameproofing furnace.

上記昇温を行った後、ヒーターによる加熱を停止した際に、耐炎化炉の外にあった繊維束を炭素化炉に導入し、300℃〜2500℃の温度範囲のいずれかで炭素化処理し、得られた炭素繊維束を巻き取り機で巻き取り、炭素繊維パッケージを得る。そしてその後、前記炭素化炉及び前記巻き取り機の運転を停止する。   When the heating by the heater is stopped after the above temperature rise, the fiber bundle that was outside the flameproofing furnace is introduced into the carbonization furnace, and the carbonization treatment is performed in any temperature range of 300 ° C to 2500 ° C. Then, the obtained carbon fiber bundle is wound up by a winder to obtain a carbon fiber package. Thereafter, the operation of the carbonization furnace and the winder is stopped.

以上説明したように、本発明の製造方法によれば、連続運転を止めた時点で耐炎化処理を終了していた繊維束を、無駄にすることなく炭素繊維パッケージとすることができる。   As described above, according to the manufacturing method of the present invention, the fiber bundle that has been subjected to the flameproofing treatment when the continuous operation is stopped can be made into a carbon fiber package without being wasted.

以下、本発明の製造方法を、実施例に基づきより詳細に説明する。
(定常運転)
シート状に広げた炭素繊維前駆体繊維束を3つの温度領域に分かれた耐炎化炉に導入した。最上流部の温度は230℃、中間部の温度は240℃、最下流部の温度は250℃とした。また、繊維束が前記耐炎化炉を通過する時間は100分とした。得られた耐炎化繊維束を炭素化炉により1300℃の処理を行い、表面処理、サイズ処理を経た後、巻き取り機で巻き取って炭素繊維パッケージを得た。
(運転停止)
耐炎化炉の最上流部の温度を238℃、中間部の温度を248℃とし、その状態を30分維持したのち、耐炎化炉のヒーター加熱を停止した。耐炎化炉のヒーターを停止した後も、前記炭素化炉による熱処理、表面処理、サイズ処理を行い、巻き取り機で巻き取り、炭素繊維パッケージを得た。その間、工程における毛羽の発生・巻付きは見受けられなかった。耐炎化炉のヒーター加熱停止から20分後、前記炭素化炉及び前記巻き取り機の運転を停止した。
Hereinafter, the manufacturing method of this invention is demonstrated in detail based on an Example.
(Steady operation)
The carbon fiber precursor fiber bundle spread in a sheet shape was introduced into a flameproofing furnace divided into three temperature regions. The temperature of the most upstream part was 230 ° C., the temperature of the middle part was 240 ° C., and the temperature of the most downstream part was 250 ° C. The time for the fiber bundle to pass through the flameproofing furnace was 100 minutes. The obtained flame-resistant fiber bundle was treated at 1300 ° C. in a carbonization furnace, subjected to surface treatment and size treatment, and then wound up with a winder to obtain a carbon fiber package.
(Operation stopped)
The temperature of the most upstream part of the flameproofing furnace was 238 ° C., the temperature of the middle part was 248 ° C., and this state was maintained for 30 minutes, and then the heater heating of the flameproofing furnace was stopped. Even after the heater of the flameproofing furnace was stopped, heat treatment, surface treatment, and size treatment were performed by the carbonization furnace, and wound with a winder to obtain a carbon fiber package. In the meantime, generation | occurrence | production and winding of the fluff in a process were not seen. 20 minutes after stopping the heating of the heater of the flameproofing furnace, the operation of the carbonization furnace and the winder was stopped.

Claims (2)

以下の(A)及び(B)を満足する炭素繊維パッケージの製造方法。
(A)定常運転条件
(1)シート状に広げた炭素繊維前駆体繊維束を耐炎化炉に導入し、200℃〜300℃の温度範囲のいずれかで耐炎化処理し、耐炎化繊維束を得る。
(2)前記耐炎化繊維束を炭素化炉に導入し、300℃〜2500℃の温度範囲のいずれかで炭素化処理し、得られた炭素繊維束を巻き取り機で巻き取り、炭素繊維パッケージを得る。
(3)前記耐炎化炉は、ヒーターにより加熱された2以上の温度領域を有し、下流側の温度が上流側の温度より高い。
(B)運転停止条件
(4)前記耐炎化炉の、最下流部を除く一つ以上の温度領域において昇温し、昇温後の温度は、前記最下流部の温度に対し93%以上99%以下である。
(5)前記(4)の昇温された状態を、繊維束が前記耐炎化炉中に滞在する時間に対し、10%以上40%以下の間維持する。
(6)前記(5)の後、ヒーターによる加熱を停止する。
(7)ヒーターによる加熱を停止した際に、前記耐炎化炉の外にあった耐炎化繊維束を、前記(2)記載の処理を行い、炭素繊維パッケージを得る。
(8)前記(7)の後、前記炭素化炉及び前記巻き取り機の運転を停止する。
The manufacturing method of the carbon fiber package which satisfies the following (A) and (B).
(A) Steady operation conditions (1) A carbon fiber precursor fiber bundle spread in a sheet shape is introduced into a flameproofing furnace and subjected to a flameproofing treatment in any temperature range of 200 ° C to 300 ° C. obtain.
(2) The flame-resistant fiber bundle is introduced into a carbonization furnace, carbonized in any temperature range of 300 ° C. to 2500 ° C., and the resulting carbon fiber bundle is wound up by a winder to obtain a carbon fiber package. Get.
(3) The flameproofing furnace has two or more temperature regions heated by a heater, and the downstream temperature is higher than the upstream temperature.
(B) Operation stop condition (4) The temperature is raised in one or more temperature regions excluding the most downstream portion of the flameproofing furnace, and the temperature after the temperature rise is 93% or more and 99% of the temperature in the most downstream portion. % Or less.
(5) Maintain the heated state of (4) for 10% to 40% with respect to the time during which the fiber bundle stays in the flameproofing furnace.
(6) After (5), heating by the heater is stopped.
(7) When the heating by the heater is stopped, the flame-resistant fiber bundle that was outside the flame-proofing furnace is subjected to the treatment described in (2) to obtain a carbon fiber package.
(8) After (7), the operation of the carbonization furnace and the winder is stopped.
以下の(9)を満足する、請求項1記載の炭素繊維パッケージの製造方法。
(9)前記(4)の昇温後において、前記耐炎化炉中で隣接する温度領域同士の温度変化率が3〜8%である。
The manufacturing method of the carbon fiber package of Claim 1 which satisfies the following (9).
(9) After the temperature increase in (4), the temperature change rate between adjacent temperature regions in the flameproofing furnace is 3 to 8%.
JP2014076030A 2014-04-02 2014-04-02 Method for manufacturing carbon fiber package Pending JP2015196921A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2014076030A JP2015196921A (en) 2014-04-02 2014-04-02 Method for manufacturing carbon fiber package

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014076030A JP2015196921A (en) 2014-04-02 2014-04-02 Method for manufacturing carbon fiber package

Publications (1)

Publication Number Publication Date
JP2015196921A true JP2015196921A (en) 2015-11-09

Family

ID=54546792

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2014076030A Pending JP2015196921A (en) 2014-04-02 2014-04-02 Method for manufacturing carbon fiber package

Country Status (1)

Country Link
JP (1) JP2015196921A (en)

Similar Documents

Publication Publication Date Title
MX2018007988A (en) Method of producing carbon fibers from multipurpose commercial fibers.
EP2460915B1 (en) Method for stabilizing a carbon-containing fibre and method for producing a carbon fibre
JP6063045B2 (en) Carbonization method and carbon fiber production method
JP2014508229A5 (en)
KR102037843B1 (en) Manufacturing apparatus for cabon fiber using microwave
JP2017536489A (en) Continuous carbonization and carbon fiber production system
JP2018529609A (en) Method and equipment for producing cross-linked glass fiber materials
JP2015196921A (en) Method for manufacturing carbon fiber package
JP5037978B2 (en) Flameproof furnace and flameproofing method
JP2011127264A (en) Method for producing flame-proof fiber
JPWO2020066653A5 (en)
JP5541414B2 (en) Carbon fiber precursor acrylic fiber bundle, part of the thermal oxidation treatment method, thermal oxidation treatment furnace, and method of producing carbon fiber bundle
CN203269782U (en) Thermal-insulation annealing device for improving optical fiber performance
US20150322539A1 (en) Method for adjusting furnace atmosphere in continuous annealing furnace (as amended)
MX2018011905A (en) Heat treatment apparatus, heat treatment method for steel material, and hot bending method for steel material.
JP6667567B2 (en) Fiber pre-oxidation equipment
JP2012255235A5 (en)
CN105695687A (en) Novel 45 steel spheroidizing annealing process
MX2019014592A (en) Carbon fiber production method.
JP2000160435A (en) Continuous thermal treatment of acrylic fiber bundle
JP6435652B2 (en) Manufacturing method of glass base material
JP4138368B2 (en) Flameproof heat treatment apparatus and flameproof heat treatment method
JP5899949B2 (en) Carbon fiber manufacturing method
JP2010144214A (en) Method and apparatus for heat-treating iron powder
JP5037977B2 (en) Flameproofing furnace and method for producing flameproofed fiber