JPS6013963B2 - Manufacturing method for high-density, high-strength carbon material - Google Patents
Manufacturing method for high-density, high-strength carbon materialInfo
- Publication number
- JPS6013963B2 JPS6013963B2 JP51078690A JP7869076A JPS6013963B2 JP S6013963 B2 JPS6013963 B2 JP S6013963B2 JP 51078690 A JP51078690 A JP 51078690A JP 7869076 A JP7869076 A JP 7869076A JP S6013963 B2 JPS6013963 B2 JP S6013963B2
- Authority
- JP
- Japan
- Prior art keywords
- carbon material
- density
- strength
- manufacturing
- strength carbon
- 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.)
- Expired
Links
- 239000003575 carbonaceous material Substances 0.000 title claims description 13
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 239000002931 mesocarbon microbead Substances 0.000 claims description 11
- 239000011230 binding agent Substances 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000571 coke Substances 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011295 pitch Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000005087 graphitization Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011325 microbead Substances 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000004375 Dextrin Substances 0.000 description 1
- 229920001353 Dextrin Polymers 0.000 description 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 235000012907 honey Nutrition 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000011271 tar pitch Substances 0.000 description 1
Landscapes
- Ceramic Products (AREA)
Description
【発明の詳細な説明】
本発明はメソカーボンマイクロビーズを原料とする高密
度高強度炭素材の製造法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a high-density, high-strength carbon material using mesocarbon microbeads as a raw material.
ピッチ、アスファルト等より得られるメソカーボンマイ
クロビーズ（球鼠）は、ピッチとコークスの両特性をそ
なえているもので、バインダーを必要とせずに暁結し、
炭素材を得ることができる特徴を持ったものである。す
なわち一般の炭素材はコークス等それ自身では燐結しな
いものを骨材とし、３０〜５の重量％のバインダーを加
えて緑ねつ、粉砕、成形暁綾という工程を経るがメソカ
ーポンマイクロビーズは混ねつ、粉砕という工程を経ず
に成形暁緒ができるわけである。しかしメソカーボンマ
ィクロビーズは成形、競結のみでは一般の炭素材と見鶏
比重、強度があまり変わらないものしかできないという
欠点を有する。また揮発分の多いものは８樹脂分が多く
、高密度、高強度のものが得られると考えられるが、成
形時にラミネーションを発生し、満足な炭素材は得られ
ない。本発明の目的はこのような欠点を解決しメソカー
ボンマィクロビーズを用いて高密度、高強度を持つ新し
い炭素材を得ることである。メソカーポンマィクロビー
ズより得られる炭素材が高密度高強度なものが得られな
い理由として、１０００ｋ９／仇程度の圧力で成形して
も球状の形状が破壊されずにそのままであるため、メソ
カーボンマィクロビーズ同志が点接触状態となること、
また微粒子（平均粒径１０ム程度）であるため、粒子の
パッキングがうまく行かないために暁鯖時の収縮が小さ
く、成形焼成のみでは密度及び強度が小さいと考えられ
る。Mesocarbon microbeads (balls) obtained from pitch, asphalt, etc. have the characteristics of both pitch and coke, and can be solidified without the need for a binder.
It has the characteristic that carbon material can be obtained. In other words, general carbon materials use materials that do not phosphorize by themselves, such as coke, as aggregates, add a binder of 30 to 5% by weight, and go through the processes of grinding, crushing, and molding, but mesocarbon microbeads This means that molded cords can be made without going through the processes of mixing and crushing. However, mesocarbon microbeads have the disadvantage that only molding and tying can produce products that are not much different in specific gravity and strength from general carbon materials. Also, those with a high volatile content have a high content of 8 resins, and are thought to be able to obtain high density and high strength, but lamination occurs during molding, making it impossible to obtain a satisfactory carbon material. The purpose of the present invention is to solve these drawbacks and to obtain a new carbon material with high density and high strength using mesocarbon microbeads. The reason why high density and high strength carbon materials obtained from mesocarbon microbeads cannot be obtained is that the spherical shape remains unchanged even when molded at a pressure of about 1000k9/m, so mesocarbon The microbeads are in point contact with each other,
In addition, since the particles are fine particles (average particle size of about 10 μm), the particles do not pack well, resulting in small shrinkage at dawn, and it is thought that the density and strength will be low if only molded and fired.
また微粒子であるために成形時の空気抜が悪く、ラミネ
ーションを発生しやすいと考えられる。本発明者らは、
メソカーポンマイクロビーズを密にパッキングし、粒子
同志の点接触箇所を密にするために少量のバインダーで
造粒することによりこれらの問題を解決し、高密度で高
強度な炭素材を得た。造粒はらいかし、機、ボールミル
、スプレードライヤー、ベレタィザー等一般に使用され
る方法で行ない、バインダーには、ポリエチレングリコ
ール、ポリビニルアルコール、メチルセルロース、のり
、績みつ、デキストリンタールピツチ等−般に用いられ
るものを、水溶液であるいはそのままで用いた。以下実
施例により説明する。実施例 １
揮発分が１の重量％、８樹脂分３．４重量％のメソカー
ポンマィクロビーズに８重量％のポリビニルアルコール
（重合度１４００）水溶液を５重量％加え、らし、かし
、機で１０分間混合し、２仇ｈｅｓｈ以下にふるい分け
した。Furthermore, since it is a fine particle, it is difficult to vent air during molding, and it is thought that lamination is likely to occur. The inventors
These problems were solved by tightly packing mesocarbon microbeads and granulating them with a small amount of binder to make the point contact points between the particles dense, resulting in a high-density and high-strength carbon material. Granulation is carried out using commonly used methods such as sieves, machines, ball mills, spray dryers, and beletizers, and binders include commonly used binders such as polyethylene glycol, polyvinyl alcohol, methyl cellulose, glue, honey, and dextrin tarpitz. , used in aqueous solution or neat. This will be explained below using examples. Example 1 5% by weight of an 8% by weight aqueous solution of polyvinyl alcohol (degree of polymerization 1400) was added to mesocarbon microbeads with a volatile content of 1% by weight and an 8% resin content of 3.4% by weight. The mixture was mixed for 10 minutes and sieved to less than 2 mm.
これを１０００ｋ９／仇で成形し、不活性雰囲気中で９
００℃まで徐々昇温し２８００℃程度で黒鉛化した。こ
のものは見頚比重１．９０曲げ強度７００ｋ９／めであ
った。実施例 ２
揮発分２の重量％、８樹脂分７．５％のメソカーボンマ
ィクロビーズを用いた実施例１と同様に炭素材を得た。This was molded at 1000 k9/m in an inert atmosphere.
The temperature was gradually raised to 00°C and graphitized at about 2800°C. This product had a neck specific gravity of 1.90 and a bending strength of 700 k9/m. Example 2 A carbon material was obtained in the same manner as in Example 1 using mesocarbon microbeads with a volatile content of 2% by weight and a resin content of 7.5%.
このものは見鞠比重１．９５、曲げ強度８００ｋ９／め
であった。比較例 １
実施例１の〆ソカーボンマイクロビ−ズを造粒せずに、
同様に成形黒鉛化して得た炭素材の見掛比重は１．７ｕ
曲げ強度は４００ｋＱノめであった。This material had a mimari specific gravity of 1.95 and a bending strength of 800k9/m. Comparative Example 1 The carbon microbeads of Example 1 were not granulated,
The apparent specific gravity of the carbon material obtained by forming graphitization in the same way was 1.7u.
The bending strength was 400 kQ.
比較例 ２実施例２のメソカーボンマイクロビーズは、
１０００ｋｇ／■、８００１９／めで成形してラミネー
ションを発生した。Comparative Example 2 The mesocarbon microbeads of Example 2 were
It was molded at 1,000 kg/■ and 80,019 mm and lamination occurred.
比較例 ３
コークス５６重量％、黒鉛５重量％タールピッチ４の重
量％を常温から２５０℃まで４時間混ねつし、粉砕、成
形焼成黒鉛化したものは、見掛比重は１．７５曲げ強度
４００【９／めであった。Comparative Example 3 56% by weight of coke, 5% by weight of graphite, % by weight of tar pitch 4 were mixed for 4 hours from room temperature to 250°C, crushed, shaped and fired to graphitize, and the apparent specific gravity was 1.75 and the bending strength was It was 400 [9/th].
比較例 ４比較例３の炭素材にピッチを通常の方法で含
浸し、嫌成黒鉛化した。Comparative Example 4 The carbon material of Comparative Example 3 was impregnated with pitch by a conventional method and turned into amorphous graphitization.
Claims (1)
成形した後焼成及び黒鉛化することを特徴とする見掛比
重が１．９０〜１．９５で曲げ強さが７００〜８００ｋ
ｇ／ｃｍ＾２の高密度、高強度炭素材料の製造法。1 Mesocarbon microbeads are granulated with a binder, pressure molded, then fired and graphitized.The apparent specific gravity is 1.90 to 1.95 and the bending strength is 700 to 800K.
A method for producing a high-density, high-strength carbon material of g/cm^2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51078690A JPS6013963B2 (en) | 1976-07-01 | 1976-07-01 | Manufacturing method for high-density, high-strength carbon material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51078690A JPS6013963B2 (en) | 1976-07-01 | 1976-07-01 | Manufacturing method for high-density, high-strength carbon material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS534016A JPS534016A (en) | 1978-01-14 |
| JPS6013963B2 true JPS6013963B2 (en) | 1985-04-10 |
Family
ID=13668854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51078690A Expired JPS6013963B2 (en) | 1976-07-01 | 1976-07-01 | Manufacturing method for high-density, high-strength carbon material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6013963B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61236605A (en) * | 1985-04-10 | 1986-10-21 | Agency Of Ind Science & Technol | Preparation of expanded graphite |
-
1976
- 1976-07-01 JP JP51078690A patent/JPS6013963B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS534016A (en) | 1978-01-14 |
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