JPH02139464A - Production of carbon fiber felt - Google Patents
Production of carbon fiber feltInfo
- Publication number
- JPH02139464A JPH02139464A JP63290737A JP29073788A JPH02139464A JP H02139464 A JPH02139464 A JP H02139464A JP 63290737 A JP63290737 A JP 63290737A JP 29073788 A JP29073788 A JP 29073788A JP H02139464 A JPH02139464 A JP H02139464A
- Authority
- JP
- Japan
- Prior art keywords
- felt
- carbon fiber
- minute
- fibers
- flame
- 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
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 17
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 17
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000000835 fiber Substances 0.000 claims abstract description 22
- 239000012298 atmosphere Substances 0.000 claims abstract description 10
- 239000002243 precursor Substances 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 abstract description 2
- 230000009970 fire resistant effect Effects 0.000 abstract 3
- 238000000034 method Methods 0.000 description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 5
- 239000003063 flame retardant Substances 0.000 description 5
- 238000003763 carbonization Methods 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000010000 carbonizing Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229920002239 polyacrylonitrile Polymers 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- BNOODXBBXFZASF-UHFFFAOYSA-N [Na].[S] Chemical compound [Na].[S] BNOODXBBXFZASF-UHFFFAOYSA-N 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 235000013601 eggs Nutrition 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/80—Porous plates, e.g. sintered carriers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Nonwoven Fabrics (AREA)
- Conductive Materials (AREA)
- Secondary Cells (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は電池電導材用炭素＃Ｊｌ１ｍフェルトの製造
方法に関し、さらに詳しくは有機系繊維、ピッチ系繊維
を炭素化して製造する炭素繊維フェルトの製造方法に関
する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a method for producing carbon #Jl1m felt for battery conductive materials, and more specifically to a method for producing carbon fiber felt produced by carbonizing organic fibers and pitch fibers. Regarding the manufacturing method.
〈従来の技術〉
従来、ナトリウム−硫黄電池などの二次電池の電極電導
材としてカーボン、グラファイトフェルトからなる電導
材を用いることにより、二次電池の充電効率を向上させ
ることが注目されている。<Prior Art> Conventionally, attention has been paid to improving the charging efficiency of secondary batteries by using a conductive material made of carbon or graphite felt as an electrode conductive material for secondary batteries such as sodium-sulfur batteries.
このような炭素繊維からなるフェルトを製造する方法と
しては、従来、特開昭５４−１０１９８５号公報に記載
されているよう釦、炭素繊維強化複合材料用不織布基板
を作る方法が知られている。この方法は、後続炭化を容
易忙するために化学組成を変えるように予め処理された
炭化可能繊維材料から不織布シート、フェルトを作り、
次かで該基板を酸素のないところで１０００℃余シに熱
処理し繊維の炭化を完全にし、炭素、炭素複合物に転換
する方法である。As a method for manufacturing such felt made of carbon fibers, a method for manufacturing buttons and nonwoven fabric substrates for carbon fiber-reinforced composite materials, as described in Japanese Patent Application Laid-Open No. 54-101985, is known. This method makes nonwoven sheets, felts, from carbonizable fiber materials that have been previously treated to change their chemical composition to facilitate subsequent carbonization.
Next, the substrate is heat-treated at 1000° C. in the absence of oxygen to completely carbonize the fibers and convert them into carbon and carbon composites.
しかしながら、この方法は炭素、・炭素複合材料基板と
して用いる炭素繊維フェルトであり、電池電極電導材と
して充分な導電性、嵩高性を有するものではなかった。However, this method uses carbon fiber felt as a carbon/carbon composite material substrate, which does not have sufficient conductivity and bulk as a battery electrode conductive material.
一方、フェルト状、布状の炭素電極を製造する方法とし
て、特開昭６３−１４８５６０号公報に記載されている
方法が知られて因る。この方法は電極形状に形成した有
機繊維を酸素をＱ、０５〜１０容量壬含有する不活性ガ
ス中３５０〜９００℃で表面酸化し、次いで塩素または
フッ素を少なくとも３容量チ含有する不活性ガス中で８
００〜１５００℃で炭化焼成する方法である。ところが
この方法においては、電極形状に形成した有機繊維を直
接５００〜８００℃に加熱する場合、不活性ガス中であ
っても急激な発熱反応により暴走反応が起こり、電極形
状を保持できなりものである。On the other hand, as a method for manufacturing felt-like or cloth-like carbon electrodes, a method described in Japanese Patent Application Laid-Open No. 148560/1983 is known. In this method, organic fibers formed into an electrode shape are surface oxidized at 350 to 900°C in an inert gas containing Q, 05 to 10 volumes of oxygen, and then in an inert gas containing at least 3 volumes of chlorine or fluorine. At 8
This is a method of carbonizing and firing at a temperature of 00 to 1500°C. However, in this method, when organic fibers formed into an electrode shape are directly heated to 500 to 800°C, a runaway reaction occurs due to a rapid exothermic reaction even in an inert gas, and the electrode shape cannot be maintained. be.
〈発明が解決しようとする課題〉
この発明の目的は電気伝導性が高く、電極補助電導材と
して充分な炭素繊維フェルトを製造する方法を提供する
ことにある。<Problems to be Solved by the Invention> An object of the present invention is to provide a method for producing carbon fiber felt that has high electrical conductivity and is sufficient as an electrode auxiliary conductive material.
く課頭を解決するだめの手段〉
上記目的を達成するためのこの発明は、炭素繊維前駆体
である耐炎化繊維からフェルトを作成し、ついで該耐炎
化フェルトを不活性雰囲気中３００〜９００℃まで５０
０℃／分以下、９００℃〜最高温度１で１０００℃／分
以下で処理した後、さらに不活性雰囲気中最高温度が１
８００℃以上で１分以上処卵して電池用電導材炭素繊維
フェルトを製造するものである。Means for Solving Problems> This invention to achieve the above object involves creating felt from flame-resistant fibers that are carbon fiber precursors, and then heating the flame-resistant felt at 300 to 900°C in an inert atmosphere. up to 50
0°C/min or less, 900°C to maximum temperature 1, and after processing at 1000°C/min or less in an inert atmosphere, the maximum temperature is 1
Carbon fiber felt, a conductive material for batteries, is manufactured by incubating the eggs at 800° C. or higher for 1 minute or more.
この発明においては、まず炭素繊維の前駆体たる耐炎化
繊維としてポリアクリロニトリル繊維、セルロース繊維
、ピッチ繊維など、耐炎化工程と炭素工程を経て、炭素
繊維とすることができる原料繊維束を酸化性雰囲気中で
発火させないで１５０〜４００℃で熱処理し耐炎化する
。In this invention, first, polyacrylonitrile fibers, cellulose fibers, pitch fibers, etc. are used as flame-retardant fibers that are precursors of carbon fibers, and raw fiber bundles that can be made into carbon fibers are subjected to a flame-retardant process and a carbon process in an oxidizing atmosphere. It is heat treated at 150 to 400°C to make it flame resistant without causing it to ignite inside.
該耐炎化繊維からニードルパンチ法により耐炎化繊維フ
ェルトを作成する。上記耐炎化工程は耐炎化糸の密度が
ｔ ３８１７ｃｍ３以上になるように行なうのが好まし
い。A flame-resistant fiber felt is made from the flame-resistant fiber by a needle punch method. It is preferable that the above-mentioned flame-retardant step is carried out so that the density of the flame-retardant yarn becomes t 3817 cm 3 or more.
この発明におりては次に上記耐炎化ｆ＆維フェルトを、
不活性雰囲気、たとえば窒素雰囲気中で３００℃〜９０
０℃までを５００℃／分以下好ましくは２００Ｃ／分以
下の昇温速度で加熱す′る。In this invention, next, the flame-resistant f & fiber felt is
300°C to 90°C in an inert atmosphere, such as a nitrogen atmosphere
The temperature is heated up to 0°C at a temperature increase rate of 500°C/min or less, preferably 200°C/min or less.
上記温度領域においては、通常の炭素繊維製造時同様、
急激な熱分解反応によ）） Ｃｏ、 Ｎｇ、 。In the above temperature range, as in the case of normal carbon fiber production,
Due to rapid thermal decomposition reaction)) Co, Ng, .
Ｃｏ２などの揮発性ガス及びタール状の分解物が多量に
発生する。上記温度領域における昇温速度が５００℃／
分を超える場合には分解物の発生が急激となり、得られ
る炭素繊維フェルトの収率及び緻密性が大きく低下し、
この発明の目的を達成することができ々い。Large amounts of volatile gases such as Co2 and tar-like decomposition products are generated. The temperature increase rate in the above temperature range is 500℃/
If the time exceeds 1 minute, the generation of decomposed products will be rapid, and the yield and density of the obtained carbon fiber felt will be greatly reduced.
However, the object of this invention cannot be achieved.
以上の処理を経たフェルトは引き続き不活性雰囲気中９
００℃〜最高温度まで１０００℃／分以下、好ましくは
２００℃／分以下で処理した後、引き続き不活性雰囲気
中最高温度が１８００℃以上で１分以上、好ましくは５
分以上炭化焼成する。前記３００℃〜９００℃領域での
処理を行なうことにより、後段の炭化焼成を短時間にで
き、かつ得られる度素ｌＩ！、維フェルトの導電性も高
く緻密なフェルトが製造できる。After the above treatment, the felt is kept in an inert atmosphere9.
00°C to the maximum temperature at 1000°C/min or less, preferably 200°C/min or less, followed by treatment in an inert atmosphere at a maximum temperature of 1800°C or more for 1 minute or more, preferably 5
Carbonize for at least 1 minute. By carrying out the treatment in the range of 300°C to 900°C, the subsequent carbonization firing can be carried out in a short time, and the obtained degree of carbonization can be reduced! The fiber felt has high conductivity and can produce dense felt.
く実施例〉
以下実施例によりこの発明を具体的に説明する。「寸法
回復率」は初期板厚を５０係壬縮し。EXAMPLES> The present invention will be specifically described below with reference to Examples. "Dimensional recovery rate" is calculated by reducing the initial plate thickness by 50 points.
圧縮荷重を解除後の板厚の初期板厚に対する割合を示す
。It shows the ratio of the plate thickness to the initial plate thickness after the compressive load is released.
実施例１
原料とし、て炭素繊維の前駆体繊維であるポリアクリロ
ニトリル線維から得られる耐炎化繊維密度１．４０９７
ｃｍ３の耐炎化繊維を用いてニードルパンチ法により厚
さ２０寵、目付３５００ノ／ｍ ２のフェルトを得た。Example 1 Flame-resistant fiber density 1.4097 obtained from polyacrylonitrile fiber, which is a precursor fiber of carbon fiber, as a raw material
A felt with a thickness of 20 centimeters and a basis weight of 3500 knots/m2 was obtained by the needle punching method using flame-resistant fibers of cm3.
イ５られた耐炎化繊維フェルトを第１表に示す条件で窒
素雰囲気中炭素化し、第１表に示すような特性を有する
炭素繊維フェルトを得た。The flame-retardant fiber felt thus obtained was carbonized in a nitrogen atmosphere under the conditions shown in Table 1 to obtain carbon fiber felt having the properties shown in Table 1.
Claims (1)
、ついで該耐炎化フェルトを不活性雰囲気中３００〜９
００℃まで５００℃／分以下、９００℃〜最高温度まで
１０００℃／分以下で処理した後、さらに不活性雰囲気
中最高温度が１８００℃以上で１分以上処理することを
特徴とする電池電導材用炭素繊維フェルトの製造方法。A felt is made from a flame-resistant fiber that is a carbon fiber precursor, and then the flame-resistant felt is heated to a temperature of 300 to 90% in an inert atmosphere.
A battery conductive material characterized by processing at 500°C/min or less up to 00°C, at 1000°C/min or less from 900°C to the maximum temperature, and then further processing at a maximum temperature of 1800°C or more in an inert atmosphere for 1 minute or more. A method for producing carbon fiber felt for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63290737A JPH02139464A (en) | 1988-11-17 | 1988-11-17 | Production of carbon fiber felt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63290737A JPH02139464A (en) | 1988-11-17 | 1988-11-17 | Production of carbon fiber felt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02139464A true JPH02139464A (en) | 1990-05-29 |
Family
ID=17759870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63290737A Pending JPH02139464A (en) | 1988-11-17 | 1988-11-17 | Production of carbon fiber felt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02139464A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000306587A (en) * | 1999-04-21 | 2000-11-02 | Fujikoo:Kk | Felt-like conductive material |
| DE10057867C1 (en) * | 2000-11-21 | 2002-02-14 | Freudenberg Carl Kg | Graphitization of a carbonized sheet, for fuel cell gas distributors, electrode bases for supercapacitors or conductive linings for clothing, comprises heating a carbonized sheet in rows or columns with a laser ray in the presence of air |
-
1988
- 1988-11-17 JP JP63290737A patent/JPH02139464A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000306587A (en) * | 1999-04-21 | 2000-11-02 | Fujikoo:Kk | Felt-like conductive material |
| JP4578594B2 (en) * | 1999-04-21 | 2010-11-10 | 株式会社フジコー | Felt-like conductive material |
| DE10057867C1 (en) * | 2000-11-21 | 2002-02-14 | Freudenberg Carl Kg | Graphitization of a carbonized sheet, for fuel cell gas distributors, electrode bases for supercapacitors or conductive linings for clothing, comprises heating a carbonized sheet in rows or columns with a laser ray in the presence of air |
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