JPS62170525A - Apparatus for centrifugal spinning of pitch-based carbon fiber - Google Patents
Apparatus for centrifugal spinning of pitch-based carbon fiberInfo
- Publication number
- JPS62170525A JPS62170525A JP1205286A JP1205286A JPS62170525A JP S62170525 A JPS62170525 A JP S62170525A JP 1205286 A JP1205286 A JP 1205286A JP 1205286 A JP1205286 A JP 1205286A JP S62170525 A JPS62170525 A JP S62170525A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- pitch
- spinning
- plane
- centrifugal
- 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
- 238000009987 spinning Methods 0.000 title claims abstract description 57
- 229920000049 Carbon (fiber) Polymers 0.000 title claims description 14
- 239000004917 carbon fiber Substances 0.000 title claims description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims description 13
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 239000011261 inert gas Substances 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims description 3
- 230000001154 acute effect Effects 0.000 claims description 2
- 238000003763 carbonization Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000011295 pitch Substances 0.000 description 27
- 230000000052 comparative effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 238000006356 dehydrogenation reaction Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011301 petroleum pitch Substances 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
Landscapes
- Inorganic Fibers (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、遠心紡糸装置に関する。さらに詳しくは長時
間安定に紡糸が可能なピッチ系炭素繊維遠心紡糸装置に
関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a centrifugal spinning device. More specifically, the present invention relates to a pitch-based carbon fiber centrifugal spinning device that can stably spin fibers for a long period of time.
〈従来技術と問題点）
従来、ピッチ系炭素繊維の遠心紡糸の工程にＪ−タいて
回転ノズルの形状が不完全なために、長時間の遠心紡糸
の作業中に回転ノズルの中央部に炭化の進んだビッヂが
１ｆｆ−積して、やがて回転ノズルを閉塞するという問
題があり、実°用上前決ザる必要外に迫られていた。<Prior art and problems> Conventionally, in the process of centrifugal spinning of pitch-based carbon fibers, the shape of the rotating nozzle was imperfect, so carbonization occurred in the center of the rotating nozzle during long-time centrifugal spinning operations. There is a problem in that the advanced bits accumulate by 1ff and eventually block the rotating nozzle, so it has become unnecessary to make a decision in advance in practical terms.
例えば、特開昭６０−１７３１１１に見られるように回
転紡糸冊（回転ノズル）のような形状では、回転ノズル
の中央底面がノズル近傍まで連続する平面を形成してい
るため、中央部に供給された原料ピッチは落下後、遠心
力が弱いため短時間の滞留の後、平面と連続的に接触し
ながら外側に向って移動してゆく。しかるに、回転ノズ
ルの底面部はその下側のヒータで加熱されており、紡糸
ノズル近傍部よりもはるかに高温になっている。For example, in the shape of a rotary spinning booklet (rotary nozzle) as seen in JP-A-60-173111, the center bottom of the rotary nozzle forms a continuous plane up to the vicinity of the nozzle. After falling, the raw material pitch stays for a short time due to the weak centrifugal force, and then moves outward while continuously contacting the flat surface. However, the bottom part of the rotating nozzle is heated by a heater below it, and is much hotter than the part near the spinning nozzle.
したがってこの部分に接触した原料ピッチは必要以上の
温度に一度加熱されることとなり、脱水素反応を始めと
する炭化反応が進行し、堆積物となりやがて回転ノズル
を閉塞することになる。Therefore, the raw material pitch that comes into contact with this portion is once heated to a temperature higher than necessary, and carbonization reactions including dehydrogenation reactions proceed, forming deposits that eventually block the rotating nozzle.
（問題点を解決するための手段）
本発明者らは上記の事情に鑑み、種々検討した結果、原
料ピッチの炭化反応による堆積問題を解決して、従来の
技術では困テ１であった長時間の遠心紡糸の作業を可能
ならしめるピッチ系炭素繊維遠心紡糸装置を発明するに
至った。(Means for Solving the Problems) In view of the above circumstances, the present inventors have made various studies and have solved the problem of deposition due to the carbonization reaction of raw material pitch, which has been difficult with conventional techniques. We have invented a pitch-based carbon fiber centrifugal spinning device that enables time-consuming centrifugal spinning operations.
すなわち本発明を第１図によって説明すると、回転ノズ
ル１の回転軸３が垂直方向で繊維の吐出方向が水平方向
である遠心紡糸装置において、回転ノズルの中央部に紡
糸ノズル２の水平レベルと上下５ ｍｍの範囲内で一致
するレベルに円形の平面５を設け、回転軸３の中心線よ
り５Ｍ以上離れた該平面の複数の箇所に原料ピッチを４
より供給し、供給された原料ピッチが遠心作用で、該平
面より９より供給された不活性ガス気流中を介して直接
紡糸ノズル２の近傍に飛行するは構を具備したことを特
徴とするピッチ系炭素繊維遠心紡糸装置を発明するに至
った。That is, to explain the present invention with reference to FIG. 1, in a centrifugal spinning apparatus in which the rotation axis 3 of the rotation nozzle 1 is vertical and the fiber discharge direction is horizontal, there are A circular plane 5 is provided at a level that matches within a range of 5 mm, and a raw material pitch of 4 is provided at multiple locations on the plane that are 5M or more away from the center line of the rotating shaft 3.
The pitch is characterized by being equipped with a mechanism in which the supplied raw material pitch flies directly near the spinning nozzle 2 through the inert gas stream supplied from the plane by centrifugal action. This led to the invention of a carbon fiber centrifugal spinning device.
なお、不活性ガス気流中を介して直接紡糸ノズル２の近
傍に飛行する礪構については、円形の平面を含む部分の
垂直断面図の上端が岐大幅になっているもの、あるいは
断面図の上部の両端の角度が鋭角であるものが最適であ
る。Regarding the structure that flies directly to the vicinity of the spinning nozzle 2 through an inert gas stream, the upper end of the vertical cross-sectional view of the part including the circular plane has a wide divergence, or the upper part of the cross-sectional view It is best to have acute angles at both ends.
（作用）
本発明によるピッチ系炭素繊維遠心紡糸装置を用いれば
、回転ノズル１の中央部の実質的に紡糸ノズル２の水平
レベルと一致する平面上で、回転軸３の中心線より５馴
以上離れた該平面の複数の箇所に上部より供給された原
料ピッチは、遠心作用、すなわち回転軸中心線より５
ｍｔｎ以上離れているため、例えば３０００ｒｐＩＤで
回転している場合に、重力加速度の５０倍の加速度がか
かり、さらに円形の平面を含む部分の垂直断面図の上端
より高速度で水平方向に飛行して、直接紡糸ノズル近傍
に到達し、すなわち高温の回転ノズル１の底面と接触す
ることなく、底面から離れた温度の低い該円形の平面５
より、瞬時に不活匹ガス気流中を介して直接紡糸ノズル
近傍に高速で飛行するため、脱水素反応を始めとする炭
化反応が進行することが少ないので堆積物を生成するこ
となく、長時間の遠心紡糸の運転作業が可能となる。(Function) If the pitch-based carbon fiber centrifugal spinning apparatus according to the present invention is used, the pitch carbon fiber centrifugal spinning device according to the present invention can be used on a plane that substantially coincides with the horizontal level of the spinning nozzle 2 in the center of the rotating nozzle 1, and is more than 5 cm away from the center line of the rotating shaft 3. The pitch of the raw material supplied from above to multiple locations on the plane is controlled by centrifugal action, that is, the pitch of the raw material is
mtn or more apart, for example, when rotating at 3000 rpID, an acceleration of 50 times the gravitational acceleration is applied, and furthermore, it flies horizontally at a high speed from the top of the vertical cross section of the part that includes the circular plane. , directly reaching the vicinity of the spinning nozzle, that is, without contacting the bottom surface of the high-temperature rotating nozzle 1, the low-temperature circular plane 5 away from the bottom surface of the high-temperature rotating nozzle 1
Because the inert particles instantly fly directly to the vicinity of the spinning nozzle through the gas stream at high speed, carbonization reactions such as dehydrogenation reactions are less likely to proceed. It becomes possible to operate centrifugal spinning.
また、原料ピッチの供給が複数の箇所になされるため、
回転ノズル全周にわたって紡糸ノズルから連続的に原糸
が吐出し、均一な紡糸がなされる。In addition, since raw material pitch is supplied to multiple locations,
The raw yarn is continuously discharged from the spinning nozzle around the entire circumference of the rotating nozzle, resulting in uniform spinning.
仮りに供給が１筒所の場合には、原糸の吐出Ｑに片寄り
が生じ不都合である。If the supply is from one tube, the yarn discharge Q will be uneven, which is inconvenient.
（実施例）
本発明の遠心紡糸装置はメソフェーズ石油ピッチの紡糸
に有効であるので、以下この実施例について詳述するが
本発明は、これに限定されるものではない。(Example) Since the centrifugal spinning apparatus of the present invention is effective for spinning mesophase petroleum pitch, this example will be described in detail below, but the present invention is not limited thereto.
実施例−１
第１図に示すような、回転ノズル１（直径、２００制、
ノズル口径：０．３ｓＸノズル長さＡ、２ｍｍ、ノズル
穴数；１００ホール）の内部には９より加熱窒素ガスを
導入しながら、実質的に紡糸ノズル２の水平レベルと一
致する位置に、直径：４６ｍｍの円形の平面板５を設け
、その下に直径・４０ｍｍの円柱状回転ノズル固定金具
６を設置することにより、供給された原料ピッチが遠心
作用で該平面より不活性１．ｆス気流中を介して直接紡
糸ノズル２近傍に飛行する礪構にせしめて、回転軸３の
中心線より１０ｍｍ離れた該平面の２箇所に原料ピッチ
を４より供給し、＋１０熱ヒーター７および８により回
転ノズルの側面にある紡糸ノズル部の温度を３７０°Ｃ
１回転ノズルの底面の温度を４１０°Ｃに制御して、回
転数３００Ｏｒｐｍの条件Ｃ゛１２１２時間な連続紡糸
が実施できた。Example-1 Rotating nozzle 1 (diameter, 200 scale,
Nozzle diameter: 0.3s x nozzle length A, 2mm, number of nozzle holes: 100 holes) While introducing heated nitrogen gas from 9 into the inside of the spinning nozzle 2, the diameter : By providing a 46 mm circular flat plate 5 and installing a cylindrical rotary nozzle fixing fitting 6 with a diameter of 40 mm below it, the supplied raw material pitch is made more inert than the flat plate by centrifugal action. The raw material pitch is supplied from 4 to two points on the plane 10 mm apart from the center line of the rotating shaft 3 by direct flight to the vicinity of the spinning nozzle 2 through the airflow, and the +10 thermal heater 7 and 8, the temperature of the spinning nozzle part on the side of the rotating nozzle is set to 370°C.
Continuous spinning for 1212 hours was carried out under the conditions of 300 rpm and 300 rpm by controlling the temperature of the bottom surface of the single-rotation nozzle to 410°C.
本実施試験の後、回転ノズル部を解放したところ、内部
のよごれは少なく、ピッチの残留量は、２０Ｕであった
。After the actual test, when the rotating nozzle section was opened, there was little dirt inside and the remaining amount of pitch was 20U.
実施例−２
第２図に示すような、回転ノズル１（直径。２００ｍｍ
、ノズル口径：（１，３ｇＸノズル長さ、１．２履、ノ
ズル穴数：１００ホール）の中央部に実質的に紡糸ノズ
ル２の水平レベルと一致する位置に、直径４５２Ｍの円
形の平面６を設け、その断面図が台形で上部の両端の角
度が６０”であり、４より供給された原料ピッチが遠心
作用で該平面より不活性ガス気流中を介して直接紡糸ノ
ズル近傍に飛行する顆閏を有ブる回転ノズル固定金具６
を設け、回転軸３の中心線より１５ｒＲ，離れた該平面
の３箇所に原料ピッチを４にり供給し、加熱ヒーター７
３３よび８により回転ノズルの側面である紡糸ノズル部
の温度を３７５°Ｃ１回転ノズル１の底面の温度を４１
５℃に制御して、回転数３５０Ｏｒｐｍの条件”Ｃ−１
４時間の円滑な３！１続紡糸が実施できた。Example-2 Rotating nozzle 1 (diameter: 200 mm) as shown in Fig. 2
, nozzle diameter: (1.3g x nozzle length, 1.2 holes, number of nozzle holes: 100 holes) A circular plane 6 with a diameter of 452M is placed in the center of the spinning nozzle 2 at a position substantially corresponding to the horizontal level of the spinning nozzle 2. The cross-sectional view is trapezoidal and the angle at both ends of the upper part is 60", and the raw material pitch supplied from 4 flies directly to the vicinity of the spinning nozzle from the plane through an inert gas stream by centrifugal action. Rotating nozzle fixing fitting 6 with jumper
A heating heater 7
33 and 8, the temperature of the spinning nozzle part, which is the side surface of the rotating nozzle, is set to 375°C.1 The temperature of the bottom surface of rotating nozzle 1 is set to 41°C.
Condition ``C-1'' of controlling the temperature to 5℃ and rotating speed 350Orpm.
Smooth 3!1 continuous spinning was carried out for 4 hours.
本実施試験の後、回転ノズル部を解放したところ、内部
のよごれは少なく、ピッチの残留量は、１５！Ｊてあっ
た。After the actual test, when the rotating nozzle part was released, there was little dirt inside, and the amount of remaining pitch was 15! There was a J.
比較例−１
第３図に示すような、回転ノズル１（半径：１００闇、
ノズル口径０．３１Ｈ（Ｂｘノズル長さ １．２顧、ノ
ズル穴数１００ホール）の中央部に紡糸ノズル２の水平
レベルより’ｌｏＩＲｍ低い位置に、直径１５２ｍｍの
円形の平面を設け、その断面図が台形で上部の両端の角
度が１６０゛である回転ノズル固定金具１１を設け、回
転軸３の中央部に原料ピッチを１０より供給し、加熱ヒ
ーター７および８により回転ノズル１の側面である紡糸
ノズル部の温度を３７０°Ｃ１回転ノズルの底面の温度
を４１０℃に制御して、回転数３５００ｒｐｎの条件で
０．５時間紡糸を行ったところ、紡糸ノズルが閉塞して
原糸の吐出が停止した。Comparative Example-1 Rotating nozzle 1 (radius: 100 mm,
A circular plane with a diameter of 152 mm is provided in the center of the nozzle diameter 0.31H (Bx nozzle length 1.2 mm, number of nozzle holes 100 holes) at a position lower than the horizontal level of the spinning nozzle 2 by 152 mm. A rotating nozzle fixing fitting 11 is provided, which has a trapezoidal shape and an angle of 160 degrees at both ends of the upper part, and a raw material pitch is supplied from 10 to the center of the rotating shaft 3, and the heating heaters 7 and 8 are used to spin the spinning nozzle, which is the side surface of the rotating nozzle 1. When the temperature of the nozzle part was controlled to 370°C and the temperature of the bottom of the rotating nozzle to 410°C and spinning was performed for 0.5 hours at a rotational speed of 3500 rpm, the spinning nozzle was blocked and the yarn discharge stopped. did.
本比較試験の後、回転ノズル部を解放したところ、ノズ
ル底面ならびに側面など全面に炭化の進んだピッチが残
存して８５つ、そのｆｆ１ｆｆｌは１８０Ｊもあった。After this comparative test, when the rotating nozzle section was released, 85 highly carbonized pitches remained on the entire surface including the bottom and side surfaces of the nozzle, and their ff1ffl was 180J.
本発明による実施例および比較例から明らかなように、
本発明のよるピッチ系炭素繊維遠心紡糸装置を用いると
、原ねピッチの炭化反応の進行なく、すなわち回転ノズ
ル内に堆積物を生成することなく、長時間の遠心紡糸の
作業が可能であることか明確である。As is clear from the examples according to the present invention and comparative examples,
By using the pitch-based carbon fiber centrifugal spinning apparatus according to the present invention, it is possible to perform centrifugal spinning for a long time without progressing the carbonization reaction of raw pitch, that is, without generating deposits in the rotating nozzle. Is it clear?
第１図ならびに第２図は本光明に係るピッチ系炭素繊維
の遠心紡糸装置の主要部分の断面図、第３図は従来技術
によるピッチ系炭素繊帷遠心紡糸装（ｄの主要部分の断
面図である。
１・・・回転ノズル ２・・・紡糸ノズル３・・・回転
軸 ４・・・原料ピッチの供給部（複枚）５・・・
円形の平面板
６・・・供給された原料ピッチが遠心作用で不活性ガス
気流中を介して直接紡糸ノズル近（力に飛行するは、溝
（円形の平面）をイ１づ−る回転ノズル固定金具
７・・・回転ノズル加熱ヒータ（下）
８・・・回転ノズル７１１１熱ヒータ（上）９・・・高
温窒素ガス供給部1 and 2 are cross-sectional views of main parts of a pitch-based carbon fiber centrifugal spinning apparatus according to the present invention, and FIG. 3 is a cross-sectional view of main parts of a pitch-based carbon fiber centrifugal spinning apparatus (d) according to the prior art. 1...Rotating nozzle 2...Spinning nozzle 3...Rotating shaft 4...Material pitch supply unit (multiple sheets) 5...
Circular plane plate 6...The supplied raw material pitch is passed through an inert gas stream by centrifugal action directly near the spinning nozzle (the rotating nozzle that flies through the groove (circular plane)) Fixing bracket 7... Rotating nozzle heater (bottom) 8... Rotating nozzle 7111 thermal heater (top) 9... High temperature nitrogen gas supply section
Claims (1)
水平方向である遠心紡糸装置において、回転ノズルの中
央部に紡糸ノズルの水平レベルと上下５ｍｍの範囲内で
一致するレベルに円形の平面を設け、回転軸中心線より
５ｍｍ以上離れた該平面の複数の箇所に原料ピッチを上
部より供給し、供給された原料ピッチが遠心作用で該平
面より不活性ガス気流中を介して直接紡糸ノズル近傍に
飛行する機構を具備したことを特徴とするピッチ系炭素
繊維遠心紡糸装置。 ２ 供給された原料ピッチが遠心作用で該平面より不活
性ガス気流中を介して直接紡糸ノズル近傍に飛行する機
構の円形の平面を含む部分の垂直断面図の上端が最大幅
になっていることを特徴とする特許請求の範囲第１項に
記載のピッチ系炭素繊維遠心紡糸装置。 ３ 供給された原料ピッチが遠心作用で該平面より不活
性ガス気流中を介して直接紡糸ノズル近傍に飛行する機
構の円形の平面を含む部分の垂直断面図の上部の両端の
角度が鋭角である特許請求の範囲第１項に記載のピッチ
系炭素繊維遠心紡糸装置。[Claims] 1. In a centrifugal spinning device in which the axis of rotation of the rotating nozzle is vertical and the direction of fiber discharge is horizontal, the center of the rotating nozzle coincides with the horizontal level of the spinning nozzle within a range of 5 mm above and below. A circular plane is provided on the level, and raw material pitch is supplied from above to multiple locations on the plane that are 5 mm or more away from the center line of the rotation axis, and the supplied raw material pitch is centrifugally released from the plane into an inert gas stream. 1. A pitch-based carbon fiber centrifugal spinning device characterized by comprising a mechanism for flying directly near a spinning nozzle through a pitch-based carbon fiber centrifugal spinning device. 2. The upper end of the vertical cross-sectional view of the part including the circular plane of the mechanism in which the supplied raw material pitch directly flies from the plane through the inert gas stream to the vicinity of the spinning nozzle by centrifugal action has the maximum width. A pitch-based carbon fiber centrifugal spinning apparatus according to claim 1, characterized in that: 3. The angles at both ends of the upper part of the vertical cross-sectional view of the part including the circular plane of the mechanism in which the supplied raw material pitch flies directly from the plane to the vicinity of the spinning nozzle through the inert gas stream by centrifugal action are acute angles. A pitch-based carbon fiber centrifugal spinning apparatus according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61012052A JPH0735610B2 (en) | 1986-01-24 | 1986-01-24 | Pitch-based carbon fiber centrifugal spinning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61012052A JPH0735610B2 (en) | 1986-01-24 | 1986-01-24 | Pitch-based carbon fiber centrifugal spinning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62170525A true JPS62170525A (en) | 1987-07-27 |
| JPH0735610B2 JPH0735610B2 (en) | 1995-04-19 |
Family
ID=11794829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61012052A Expired - Lifetime JPH0735610B2 (en) | 1986-01-24 | 1986-01-24 | Pitch-based carbon fiber centrifugal spinning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0735610B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101414739B1 (en) * | 2012-10-25 | 2014-07-07 | 주식회사 우리나노 | Method of manufacturing nanofiber |
| KR101354509B1 (en) * | 2012-11-06 | 2014-01-23 | 주식회사 우리나노 | Method of manufacturing nanofiber filament |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57183458A (en) * | 1981-04-28 | 1982-11-11 | Kobunshi Kako Kenkyusho | Production of weft parallel body of jet filament by centrifugal spinning method |
| JPS58185448A (en) * | 1982-04-06 | 1983-10-29 | イゾヴエ−ル・サン・ゴ−バン | Fiber formation |
| JPS59179811A (en) * | 1983-03-23 | 1984-10-12 | イゾヴエ−ル・サン・ゴ−バン | Production of phenol resin fiber |
-
1986
- 1986-01-24 JP JP61012052A patent/JPH0735610B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57183458A (en) * | 1981-04-28 | 1982-11-11 | Kobunshi Kako Kenkyusho | Production of weft parallel body of jet filament by centrifugal spinning method |
| JPS58185448A (en) * | 1982-04-06 | 1983-10-29 | イゾヴエ−ル・サン・ゴ−バン | Fiber formation |
| JPS59179811A (en) * | 1983-03-23 | 1984-10-12 | イゾヴエ−ル・サン・ゴ−バン | Production of phenol resin fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0735610B2 (en) | 1995-04-19 |
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