JPH05139833A - Production of high-density carbon material - Google Patents

Production of high-density carbon material

Info

Publication number
JPH05139833A
JPH05139833A JP2414619A JP41461990A JPH05139833A JP H05139833 A JPH05139833 A JP H05139833A JP 2414619 A JP2414619 A JP 2414619A JP 41461990 A JP41461990 A JP 41461990A JP H05139833 A JPH05139833 A JP H05139833A
Authority
JP
Japan
Prior art keywords
weight
binder
raw
resin
carbonaceous raw
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.)
Withdrawn
Application number
JP2414619A
Other languages
Japanese (ja)
Inventor
Yoichi Kawano
陽一 川野
Takanori Nishibatake
高徳 西畠
Fumito Morikawa
文人 森川
Masahiro Sato
昌宏 佐藤
Original Assignee
Nippon Steel Chem Co Ltd
新日鐵化学株式会社
Tohoku Kyowa Carbon Kk
東北協和カーボン株式会社
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 Nippon Steel Chem Co Ltd, 新日鐵化学株式会社, Tohoku Kyowa Carbon Kk, 東北協和カーボン株式会社 filed Critical Nippon Steel Chem Co Ltd
Priority to JP2414619A priority Critical patent/JPH05139833A/en
Publication of JPH05139833A publication Critical patent/JPH05139833A/en
Withdrawn legal-status Critical Current

Links

Abstract

PURPOSE:To facilitate blending and preparation of raw materials and to obtain a carbon material having slight variability of quality, denseness and high strength by previously adding a given amount of a beta-resin concentrate to a carbonaceous raw material powder or a binder to give a paste and graphitizing the paste. CONSTITUTION:A pulverized carbonaceous raw material or a binder is premixed with a beta-resin concentrate. Or the concentrate is added to a mixture of the carbonaceous raw material and a pitch binder. The mixture having 10-50wt.% adjusted beta-resin content in the total blend is heated and kneaded by a kneader to give a paste. The paste is cooled and reground to give raw material powder, which is molded and burnt or graphitized.

Description

【発明の詳細な説明】Detailed Description of the Invention
【0001】[0001]
【産業上の利用分野】本発明は放電加工用電極材,シー
ル材,軸受け,炭素ブラシ,黒鉛ルツボ等に利用される
高密度炭素材の製造法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a high density carbon material used for an electric discharge machining electrode material, a sealing material, a bearing, a carbon brush, a graphite crucible and the like.
【0002】[0002]
【従来技術とその問題点】炭素質成形体は,ピッチコー
クス,石油コークス等の炭素質原料とタール,ピッチ等
の結合材とを混合して,加熱捏和,冷却粉砕,成形,焼
成更に必要により2500〜3000℃に加熱する黒鉛
化工程を加えて製造されている。かかる炭素質成形体の
製造には,長期間を要するが,製造中にクラックが生じ
たり多孔質化したりして製品歩留りを落とす等の種々の
欠点を有する。
2. Description of the Related Art Carbonaceous compacts require heating and kneading, cooling and crushing, molding and firing by mixing carbonaceous raw materials such as pitch coke and petroleum coke with a binder such as tar and pitch. Manufactured by adding a graphitization step of heating to 2500 to 3000 ° C. Although it takes a long time to manufacture such a carbonaceous molded body, there are various drawbacks such as cracks and porosity during the manufacturing, which lowers the product yield.
【0003】そこで従来から炭素質原料の配合条件やタ
ール,ピッチ等の結合材の改質等によって炭素質成形体
の歩留りや品質を改善する方法が種々提案されている。
例えば特公昭54−4007号では,10μ以下が95
%以上の粒度分布を持つ炭素質原料100に対し,固定
炭素70%以上,β樹脂分30%以上のピッチ2〜30
%を含むタールピッチ粘結剤130〜180を配合する
方法を提案している。この方法はピッチ含侵焼成を経ず
に高品質の炭素質成形体が得られるが,炭素質原料に対
するタールピッチ粘結剤の配合量が多い為,焼成時の揮
発分の逸出による多孔質化や亀裂発生が生じやすくこれ
を防ぐ為に焼成昇温速度を遅くする必要がある。
Therefore, conventionally, various methods have been proposed for improving the yield and quality of carbonaceous compacts by modifying the blending conditions of carbonaceous raw materials and the modification of binders such as tar and pitch.
For example, in Japanese Examined Patent Publication No. 54-4007, if 10 μ or less is 95
% Of carbonaceous material having a particle size distribution of at least 70%, fixed carbon 70% or more, β resin content of 30% or more pitch 2 to 30
% Of tar pitch binder is proposed. With this method, a high-quality carbonaceous compact can be obtained without undergoing pitch-impregnated firing, but since the tar pitch binder is blended in a large amount with respect to the carbonaceous raw material, it is porous due to escape of volatile matter during firing. In order to prevent the formation and cracking, it is necessary to slow down the heating rate.
【0004】又特公昭62−35964号では,炭素質
原料にキノリン不溶分5%以下でベンゼン不溶分15%
以下の瀝青物を重量比で,0.5〜5.0倍量加え,こ
の混合物を加熱攪拌しつつ瀝青物を重縮合させ,得られ
た熱改質物中の重質化した瀝青物部分の組成がキノリン
不溶分が10〜85重量%,キノリン可溶でベンゼン不
溶分が5〜40重量%となるようにした熱改質物を成形
したのち熱処理する方法が提案されている。この方法
は,品質変動の少ない緻密で強度大なる製品が得られる
が全配合混合物の熱改質操作が新たに加わり,かつ瀝青
物部分の組成を特定の範囲に調整するための圧力,温度
等の熱改質操作条件が困難である。
In Japanese Patent Publication No. 62-35964, the quinoline insoluble content is 5% or less and the benzene insoluble content is 15% in the carbonaceous raw material.
The following bituminous product was added in an amount of 0.5 to 5.0 times by weight, and while this mixture was heated and stirred, the bituminous product was polycondensed to obtain a heavy bituminous product part in the obtained thermal reformed product. A method has been proposed in which a heat-modified product having a quinoline insoluble content of 10 to 85% by weight, a quinoline soluble content and a benzene insoluble content of 5 to 40% by weight is molded and then heat treated. With this method, a dense and strong product with little quality fluctuation can be obtained, but a thermal reforming operation of the entire blended mixture is newly added, and the pressure, temperature, etc. for adjusting the composition of the bituminous part to a specific range are added. The thermal reforming operation conditions of are difficult.
【0005】[0005]
【発明の目的】本発明は,上記した問題点を改良し原料
配合調整が容易で品質変動が少なく緻密で強度大なる高
密度炭素材の製造法を提供することを目的とする。
SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for producing a high-density carbon material which is improved in the above-mentioned problems, is easy to adjust the raw material composition, has a small quality variation, is dense and has a high strength.
【0006】[0006]
【発明の構成】本発明は微粉砕された炭素質原料と結合
材を混合して成形し焼成して炭素成形体を製造するにあ
たり,βレジン濃縮物を前記炭素質原料又は結合材に予
め添加するか或いは前記炭素質原料と結合材との混合物
に予め添加して全配合物中のβレジン含有率を10〜5
0重量%に調整したものをニーダーにて加熱捏和してペ
ーストとした後,冷却して再粉砕した原料粉を成形し,
焼成,或いは黒鉛化処理することを特徴とする高密度炭
素材の製造法である。
BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, when a finely pulverized carbonaceous raw material and a binder are mixed, molded and fired to produce a carbon compact, a β resin concentrate is added in advance to the carbonaceous raw material or binder. Or by adding it to the mixture of the carbonaceous raw material and the binder in advance so that the β resin content in the total formulation is 10 to 5
The mixture adjusted to 0% by weight is kneaded by heating with a kneader to form a paste, which is then cooled and re-ground to form a raw material powder,
It is a method for producing a high-density carbon material, which is characterized by firing or graphitization.
【0007】又再粉砕した原料粉を成形ラバー中に充填
して、流体圧中でラバープレス成形する上記高密度炭素
材の製造法である。更に炭素質原料100重量部に対し
て結合材の配合量が30乃至100重量部の範囲内でβ
レジン濃縮物を配合する上記高密度炭素材の製造法であ
る。更に又βレジン濃縮物はコールタール又はコールタ
ール系ピッチを芳香族炭化水素系溶剤で抽出分離して得
られた灰分0.1重量%以下でキノリン可溶ベンゼン不
溶成分50重量%以上含有するものを予め微粉砕して添
加する上記高密度炭素材の製造法である。
[0007] Further, it is a method for producing the above-mentioned high-density carbon material, in which re-pulverized raw material powder is filled in a molding rubber and rubber press molding is performed under fluid pressure. Further, when the compounding amount of the binder is within the range of 30 to 100 parts by weight with respect to 100 parts by weight of the carbonaceous raw material, β
It is a method for producing the above-mentioned high-density carbon material, which comprises blending a resin concentrate. Further, the β-resin concentrate contains 0.1% by weight or less of ash obtained by extracting and separating coal tar or coal tar pitch with an aromatic hydrocarbon solvent and 50% by weight or more of quinoline-soluble benzene-insoluble component. Is a method for producing the above-mentioned high-density carbon material, which is previously pulverized and added.
【0008】以下本発明を詳細に説明する。本発明にお
ける炭素質原料とは,ピッチコークス,石油コークスな
どの仮焼コークス及びその中間製品である未仮焼の生コ
ークス,更に天然黒鉛,カーボンブラック等を利用出来
る。炭素質原料の粒径としては,より高品質で高強度の
ものを得る為には,200メッシュの篩を全量通過し,
その平均粒径が30μ以下より好ましくは10μ以下で
あることが好ましい。
The present invention will be described in detail below. As the carbonaceous raw material in the present invention, calcined coke such as pitch coke and petroleum coke, and uncalcined raw coke which is an intermediate product thereof, as well as natural graphite and carbon black can be used. Regarding the particle size of the carbonaceous raw material, in order to obtain higher quality and high strength, the entire amount is passed through a 200 mesh sieve,
The average particle size is preferably 30 μm or less, more preferably 10 μm or less.
【0009】結合材としては,特に限定するものではな
いが,コールタール,コールタールピッチ,コールター
ルピッチの前駆体であるソフトピッチ,石油系重質ピッ
チ等を利用出来る。
The binder is not particularly limited, but coal tar, coal tar pitch, soft pitch which is a precursor of coal tar pitch, heavy petroleum pitch and the like can be used.
【0010】本発明において炭素質原料に対する結合材
の配合比は,重量比で炭素質原料100重量部に対して
結合材の配合量が30乃至100重量部好ましくは40
〜80重量部である。本発明のβレジン濃縮物とは,キ
ノリン可溶ベンゼン不溶成分であるβレジンを50重量
%以上含有するものである。
In the present invention, the compounding ratio of the binder to the carbonaceous raw material is 30 to 100 parts by weight, preferably 40 to 40 parts by weight of the carbonaceous raw material.
~ 80 parts by weight. The β-resin concentrate of the present invention is one containing 50% by weight or more of β-resin which is a quinoline-soluble benzene-insoluble component.
【0011】かかるβレジン濃縮物の製造方法は特に限
定するものではないが,コールタールピッチを熱改質し
又は熱改質することなく,芳香族炭化水素溶剤とキノリ
ン溶剤を利用してキノリン可溶ベンゼン不溶成分である
βレジンを抽出分離したものであってもよい。より好ま
しいβレジン濃縮物の製造方法としては,先に本件出願
人が特開昭63−112687や特開昭64−6969
2号で提案した如く,コールタールピッチを芳香族炭化
水素溶剤とともに溶剤の超臨界状態下で第1分別帯域で
低比重液とキノリン不溶分である高比重液に相分離さ
せ,次いで低比重液を第2の分別帯域で第1分別帯域と
は異なる溶剤の超臨界状態下で低比重液とキノリン可溶
ベンゼン不溶成分であるβレジンが濃縮された高比重液
に相分離させて得られる高比重液相から溶剤を除去する
ことに依って容易にβレジン含有率50重量%以上のβ
レジン濃縮物を得ることが出来る。
The method for producing such a β-resin concentrate is not particularly limited, but quinoline can be converted by using an aromatic hydrocarbon solvent and a quinoline solvent without thermal modification of coal tar pitch. It may be one obtained by extracting and separating β resin which is a component insoluble in benzene. As a more preferred method for producing a β-resin concentrate, the applicant of the present invention has previously disclosed JP-A-63-112687 and JP-A-64-6969.
As proposed in No. 2, coal tar pitch is phase-separated with aromatic hydrocarbon solvent in the first fractionation zone into a low specific gravity liquid and a high specific gravity liquid that is insoluble in quinoline in the supercritical state of the solvent, and then a low specific gravity liquid. Is obtained by phase-separating the low specific gravity liquid and the high specific gravity liquid in which β-resin, which is a quinoline-insoluble benzene-insoluble component, is concentrated in the second separation zone under a supercritical state of a solvent different from the first separation zone. By removing the solvent from the specific gravity liquid phase, β with a β resin content of 50% by weight or more can be easily obtained.
A resin concentrate can be obtained.
【0012】βレジン濃縮物は通常軟化点(SP)が1
50〜250℃であって予めアトマイザー等で微粉砕し
たものが好ましい。かかるβレジン濃縮物を前記炭素質
原料又は結合材に予め添加するか或いは前記炭素質原料
と結合材との混合物に予め添加するがその配合量として
は,結合材中に含まれるβレジンも含めて全配合物中の
βレジン含有率を10〜50重量%、より好ましくは1
0〜30重量%に調整する。βレジン含有率があまりに
も高すぎると、焼成時に割れが生じるので好ましくな
い。通常は炭素質原料100重量部に対して結合材の配
合量が30乃至100重量部好ましくは40〜80重量
部であってこれに濃度既知のβレジン濃縮物を適宜の範
囲内で配合することに依って調整する。
Β-resin concentrates usually have a softening point (SP) of 1
It is preferably 50 to 250 ° C. and finely pulverized in advance with an atomizer or the like. The β-resin concentrate is added to the carbonaceous raw material or the binder in advance, or to the mixture of the carbonaceous raw material and the binder in advance. The amount of the β-resin contained in the binder also includes The content of β-resin in the total formulation is 10 to 50% by weight, more preferably 1
Adjust to 0-30% by weight. If the β resin content is too high, cracking occurs during firing, which is not preferable. Usually, the amount of the binder is 30 to 100 parts by weight, preferably 40 to 80 parts by weight, relative to 100 parts by weight of the carbonaceous raw material, and a β resin concentrate of known concentration is added to the mixture within an appropriate range. Adjust according to.
【0013】一般にコールタールピッチ結合材中にもβ
レジンが8〜24重量%の範囲内で含有されているが,
本発明ではβレジン含有率が明らかなβレジン濃縮物を
配合するだけで炭素質原料と結合材を含めた全配合物中
のβレジン含有率を任意に調整し変更可能である。
In general, β is also present in coal tar pitch binder.
Resin is contained in the range of 8 to 24% by weight,
In the present invention, the β-resin content in the total formulation including the carbonaceous raw material and the binder can be arbitrarily adjusted and changed only by blending the β-resin concentrate whose β-resin content is clear.
【0014】この点で本願発明は前記した公知特許の特
公昭62−35964号における炭素質原料とβレジン
含有率の低い結合材からなる全配合物を熱改質して結合
材中のβレジン含有率を調整するよりもはるかに簡単な
操作で済むという利点がある。
In this respect, the invention of the present application heat-reforms the entire mixture consisting of the carbonaceous raw material and the binder having a low β-resin content in the above-mentioned Japanese Patent Publication No. 62-35964 to β-resin in the binder. There is an advantage that the operation is far easier than adjusting the content rate.
【0015】全配合物中のβレジン含有率を10重量%
以上好ましくは10〜50重量%に調整することによっ
て,最終製品の曲げ強度や,硬度その他の物性を著しく
改善することが出来る。このようにして調整された炭素
質原料と結合材からなる全配合物はニーダーにて加熱捏
和して均一なペーストとした後,冷却して粉砕機にて微
粉砕した原料粉を加圧成形する。
The β-resin content in the total formulation is 10% by weight.
The bending strength, hardness and other physical properties of the final product can be remarkably improved by adjusting the content to 10 to 50% by weight. The entire mixture of the carbonaceous raw material and the binder prepared in this way was kneaded by heating with a kneader to form a uniform paste, which was then cooled and finely pulverized with a pulverizer to form a raw material powder under pressure. To do.
【0016】ニーダーにて加熱捏和するときの温度はβ
レジン濃縮物の軟化点以上とし且つ必要に応じてガス抜
きと空気酸化を行うことが好ましい。
The temperature when kneading by heating with a kneader is β
It is preferable that the softening point of the resin concentrate is equal to or higher than that, and if necessary, degassing and air oxidation are performed.
【0017】ペーストを冷却した後の粉砕機としては,
ボールミル,振動ミル,ジェットミル,ターボミル等が
あるが特に限定するものではない。粉砕粉平均粒径は3
0μ以下,好ましくは10μ以下に調整するのが望まし
い。
As a crusher after cooling the paste,
There are ball mills, vibration mills, jet mills, turbo mills, etc., but they are not particularly limited. Average particle size of crushed powder is 3
It is desirable to adjust to 0 μ or less, preferably 10 μ or less.
【0018】加圧成形は種々の方法例えば型押しプレス
又は押出成形機等の一軸加圧成形法や,静水圧法(CI
P法)等のラバープレス法が採用される。静水圧法では
微粉砕した原料粉を成形ラバー中に充填して流体圧中で
ラバープレス成形し次いで焼成,或いは2500℃以上
の温度で黒鉛化処理することによって高品質の炭素質成
形体を得ることが出来る。
The pressure molding may be carried out by various methods such as a uniaxial pressure molding method such as an embossing press or an extruder, or a hydrostatic pressure method (CI).
A rubber press method such as P method) is adopted. In the hydrostatic pressure method, high-quality carbonaceous compacts are obtained by filling finely pulverized raw material powder into molded rubber, rubber press-molding it under fluid pressure, and then firing or graphitizing it at a temperature of 2500 ° C or higher. You can
【0019】以下に実施例を説明するが本発明は,その
要旨を超えない限り,これら実施例に限定されるもので
はない。なお本願中の溶剤不溶分の分析に付いては,J
IS−K2425規定によるが,トルエン不溶分の溶剤
トルエンのかわりにベンゼンを使用しベンゼン不溶分と
した。
Examples will be described below, but the present invention is not limited to these examples as long as the gist thereof is not exceeded. Regarding the analysis of solvent insoluble matter in this application, please refer to J
According to the IS-K2425 standard, benzene was used instead of toluene as a solvent for the toluene-insoluble content to make the benzene-insoluble content.
【0020】又,以下の実施例及び比較例で得られた炭
素質成形体の評価は,全て次のように実施した。 (測定方法)JIS−R7202に準拠し測定し表示は
3本のテストピースの平均値を出した。 嵩比重(BD);寸法,重量法により算出。 曲げ強度;1000kgのロードセルにより支点間距離
40mmとし定歪下で荷重し測定した。 電気比抵抗;JIS−R7202記載の電圧降下法によ
り測定した。 ヤング率;JIS−R7202記載のヤング率測定方法
により測定した。 ショアー硬度;島津製D型ショアー硬度計により測定し
た。
The carbonaceous compacts obtained in the following examples and comparative examples were all evaluated as follows. (Measurement method) Measurement was performed according to JIS-R7202, and the average value of three test pieces was displayed. Bulk specific gravity (BD); Calculated by the dimension and weight method. Bending strength: A load cell of 1000 kg was used, and the distance between fulcrums was set to 40 mm, and the load was measured under constant strain. Electrical resistivity: Measured by the voltage drop method described in JIS-R7202. Young's modulus: Measured by the Young's modulus measuring method described in JIS-R7202. Shore hardness: Measured with a Shimadzu D-type Shore hardness meter.
【0020】[0020]
【実施例】【Example】
【実施例1】炭素質原料として,平均粒径5μのピッチ
コークス100重量部に結合材としてコールタールピッ
チ(βレジン;23%)を60重量部及びソフトピッチ
をトルエン溶剤の超臨界状態で抽出分離したβレジン濃
縮物(SP:200〜250°C,VM;28%,Q
I;1.6%,βレジン;89%)を10重量部の割合
で混合して原料中のβレジンが13.4重量%になるよ
うに調整してからラボニーダーで250℃で加熱混練し
ペーストとした後アトマイザーで粉砕して平均粒径15
μの炭素成形原料を調整した。
Example 1 As a carbonaceous raw material, 100 parts by weight of pitch coke having an average particle size of 5 μ, 60 parts by weight of coal tar pitch (β resin; 23%) as a binder and soft pitch were extracted in a supercritical state of a toluene solvent. Separated β-resin concentrate (SP: 200-250 ° C, VM; 28%, Q
I; 1.6%, β resin; 89%) were mixed at a ratio of 10 parts by weight to adjust the β resin in the raw material to be 13.4% by weight, and then kneaded by heating at 250 ° C. in a lab kneader. After making into a paste, crush it with an atomizer to obtain an average particle size of 15
A carbon forming raw material of μ was prepared.
【0021】次いでラボCIP成形機で成形圧1T/c
2 の条件下で120mmΦの成形品を得たものを,焼
成炉で900℃で焼成し,更に黒鉛化炉で2600℃で
黒鉛化した。得られた黒鉛化成形品の物性値測定結果を
表1に示す。
Then, a lab CIP molding machine is used to perform a molding pressure of 1 T / c.
A 120 mmΦ molded product obtained under the condition of m 2 was fired at 900 ° C. in a firing furnace and graphitized at 2600 ° C. in a graphitization furnace. Table 1 shows the measurement results of physical properties of the obtained graphitized molded product.
【0022】[0022]
【実施例2】実施例1と同じ原料を使用し配合割合だけ
をピッチコークス100重量部,結合材としてコールタ
ールピッチを60重量部及びβレジン濃縮物を20重量
部の割合で混合して原料中のβレジンが17.6重量%
になるように調整してから実施例1と同じ条件でCIP
成形し焼成し黒鉛化して得られた黒鉛化成形品の物性値
測定結果を表1に示す。
[Example 2] Using the same raw materials as in Example 1, mixing only 100 parts by weight of pitch coke, 60 parts by weight of coal tar pitch as a binder and 20 parts by weight of β-resin concentrate, and mixing the raw materials. 17.6% by weight of β resin
CIP under the same conditions as in Example 1
Table 1 shows the results of measuring the physical property values of the graphitized molded product obtained by molding, firing and graphitizing.
【0023】[0023]
【実施例3】実施例1と同じ原料を使用し配合割合だけ
をピッチコークス100重量部,結合材としてコールタ
ールピッチを60重量部及びβレジン濃縮物を30重量
部の割合で混合して原料中のβレジンが21.3重量%
になるように調整してから実施例1と同じ条件でCIP
成形し焼成し黒鉛化して得られた黒鉛化成形品の物性値
測定結果を表1に示す。
[Example 3] The same raw materials as in Example 1 were used, and only the blending ratio was 100 parts by weight of pitch coke, 60 parts by weight of coal tar pitch as a binder, and 30 parts by weight of β resin concentrate were mixed to prepare a raw material. 21.3% by weight of β resin
CIP under the same conditions as in Example 1
Table 1 shows the results of measuring the physical property values of the graphitized molded product obtained by molding, firing and graphitizing.
【0024】[0024]
【実施例4】実施例1と同じ原料を使用し配合割合だけ
をピッチコークス100重量部、結合材としてコールタ
ールピッチを60重量部及びβレジン濃縮物を65重量
部の割合で混合して原料中のβレジンが32重量%にな
るように調整してから,実施例1と同じ条件でCIP成
形し,焼成し黒鉛化して得られた黒鉛化成形品の物性値
測定結果を表1に示す。
[Example 4] The same raw materials as in Example 1 were used, but only the mixing ratio was 100 parts by weight of pitch coke, 60 parts by weight of coal tar pitch as a binder and 65 parts by weight of β-resin concentrate were used as raw materials. Table 1 shows the measurement results of the physical properties of the graphitized molded product obtained by adjusting the content of β-resin to 32% by weight, CIP-molding under the same conditions as in Example 1, firing and graphitizing. ..
【0025】[0025]
【比較例1】実施例1と同じ原料を使用し,但しβレジ
ン濃縮物を配合しない以外はピッチコークス100重量
部,結合材としてコールタールピッチを60重量部の割
合で混合した。この時の原料中のβレジンは8.6重量
%である。このように調整してから実施例1と同じ条件
でCIP成形し焼成し黒鉛化して得られた黒鉛化成形品
の物性値測定結果を表1に示す。
Comparative Example 1 The same raw materials as in Example 1 were used, except that 100 parts by weight of pitch coke and 60 parts by weight of coal tar pitch as a binder were mixed except that the β resin concentrate was not blended. The β resin in the raw material at this time is 8.6% by weight. Table 1 shows the results of measuring the physical property values of the graphitized molded product obtained by CIP molding, firing and graphitizing under the same conditions as in Example 1 after such adjustment.
【0026】[0026]
【比較例2】実施例1と同じ原料を使用し,但しβレジ
ン濃縮物の配合量のみを65重量部に増量して原料中の
βレジンが51重量%になるように調整してから実施例
1と同じ条件でCIP成形し,焼成したところ焼成時に
割れが発生した。
Comparative Example 2 The same raw material as in Example 1 was used, except that the amount of the β resin concentrate was increased to 65 parts by weight to adjust the β resin in the raw material to 51% by weight. When CIP molding was performed under the same conditions as in Example 1 and firing was performed, cracks occurred during firing.
【0027】[0027]
【表1】 [Table 1]
【0028】表1から明らかなように,実施例の黒鉛成
形品の各物性値はいずれも比較例のものよりも著しく向
上しており,又焼成,黒鉛化品のクラック発生もなかっ
た。
As is clear from Table 1, the physical properties of the graphite molded articles of the examples were all significantly higher than those of the comparative examples, and there was no cracking of the fired or graphitized article.
【0029】[0029]
【発明の効果】本発明によれば,配合原料中のβレジン
含有率を容易に調整可能であり,βレジンを添加するこ
とによって,組織改良により物性値が改善される。
EFFECTS OF THE INVENTION According to the present invention, the β-resin content in the blended raw material can be easily adjusted, and the addition of β-resin improves the physical properties by improving the structure.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐藤 昌宏 塩釜市清水沢3−25−2 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiro Sato 3-25-2 Shimizuzawa, Shiogama City

Claims (4)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 微粉砕された炭素質原料と結合材を混合
    して成形し焼成して炭素成形体を製造するにあたり,β
    レジン濃縮物を前記炭素質原料又は結合材に予め添加す
    るか或いは前記炭素質原料とピッチ結合材との混合物に
    予め添加して全配合物中のβレジン含有率を10〜50
    重量%に調整したものをニーダーにて加熱捏和してペー
    ストとした後,冷却して再粉砕した原料粉を成形し,焼
    成,或いは黒鉛化処理することを特徴とする高密度炭素
    材の製造法。
    1. A method for producing a carbon compact by mixing a finely pulverized carbonaceous raw material and a binder, molding and firing the mixture, β
    The resin concentrate is added to the carbonaceous raw material or the binder in advance or to the mixture of the carbonaceous raw material and the pitch binder so that the β-resin content in the total composition is 10 to 50.
    Manufacture of high-density carbon material characterized by heating and kneading the material adjusted to a weight% with a kneader to form a paste, cooling and re-grinding the raw material powder, firing, or graphitizing treatment Law.
  2. 【請求項2】 再粉砕した原料粉を成形ラバー中に充填
    して流体圧中でラバープレス成形する請求項1記載の高
    密度炭素材の製造法。
    2. The method for producing a high-density carbon material according to claim 1, wherein the re-pulverized raw material powder is filled in a molding rubber and rubber press molding is performed under fluid pressure.
  3. 【請求項3】 炭素質原料100重量部に対して結合材
    の配合量が30乃至100重量部の範囲内でβレジン濃
    縮物を配合する請求項1記載の高密度炭素材の製造法。
    3. The method for producing a high-density carbon material according to claim 1, wherein the β-resin concentrate is compounded in an amount of 30 to 100 parts by weight of the binder with respect to 100 parts by weight of the carbonaceous raw material.
  4. 【請求項4】 βレジン濃縮物はコールタール又はコー
    ルタール系ピッチを芳香族炭化水素系溶剤で抽出分離し
    て得られた灰分0.1重量%以下でキノリン可溶ベンゼ
    ン不溶成分50重量%以上含有するものであって,予め
    微粉砕して添加する請求項1又は請求項2記載の高密度
    炭素材の製造法。
    4. The β-resin concentrate has an ash content of 0.1% by weight or less obtained by extracting and separating coal tar or coal tar pitch with an aromatic hydrocarbon solvent, and 50% by weight or more of quinoline-soluble benzene-insoluble component. The method for producing a high-density carbon material according to claim 1 or 2, which is contained and finely pulverized in advance.
JP2414619A 1990-12-27 1990-12-27 Production of high-density carbon material Withdrawn JPH05139833A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2414619A JPH05139833A (en) 1990-12-27 1990-12-27 Production of high-density carbon material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2414619A JPH05139833A (en) 1990-12-27 1990-12-27 Production of high-density carbon material

Publications (1)

Publication Number Publication Date
JPH05139833A true JPH05139833A (en) 1993-06-08

Family

ID=18523075

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2414619A Withdrawn JPH05139833A (en) 1990-12-27 1990-12-27 Production of high-density carbon material

Country Status (1)

Country Link
JP (1) JPH05139833A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017159769A1 (en) * 2016-03-17 2017-09-21 新日鉄住金化学株式会社 Method for manufacturing artificial graphite electrode

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017159769A1 (en) * 2016-03-17 2017-09-21 新日鉄住金化学株式会社 Method for manufacturing artificial graphite electrode

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