JPS6369780A - Manufacture of impregnating agent for carbon material - Google Patents
Manufacture of impregnating agent for carbon materialInfo
- Publication number
- JPS6369780A JPS6369780A JP61214943A JP21494386A JPS6369780A JP S6369780 A JPS6369780 A JP S6369780A JP 61214943 A JP61214943 A JP 61214943A JP 21494386 A JP21494386 A JP 21494386A JP S6369780 A JPS6369780 A JP S6369780A
- Authority
- JP
- Japan
- Prior art keywords
- pitch
- impregnating agent
- carbon material
- particle size
- lime
- 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
- 239000003575 carbonaceous material Substances 0.000 title claims description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 18
- 239000011305 binder pitch Substances 0.000 claims description 14
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 9
- 239000004571 lime Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 235000012204 lemonade/lime carbonate Nutrition 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 description 17
- 238000005470 impregnation Methods 0.000 description 12
- 239000011295 pitch Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 5
- 239000000920 calcium hydroxide Substances 0.000 description 5
- 235000011116 calcium hydroxide Nutrition 0.000 description 5
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 239000007770 graphite material Substances 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011294 coal tar pitch Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 239000011301 petroleum pitch Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Ceramic Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は炭素材、黒鉛材に使用し、その性状を効率よく
改善するための炭素材用含浸剤の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for producing an impregnating agent for carbon materials, which is used for carbon materials and graphite materials to efficiently improve their properties.
従来、炭素材、黒鉛材にバインダーピッチ（］−ルター
ルピッチまたは石油ピッチ）を含浸させ焼成、黒鉛化を
行ない気孔率を低減させ、密度および強度の増大など、
その性状を改善することが行なわれている。この場合、
一般に最も多く用いられているものはコールタ−ピッチ
である。Conventionally, carbon materials and graphite materials are impregnated with binder pitch (-lutal pitch or petroleum pitch), fired, and graphitized to reduce porosity and increase density and strength.
Efforts are being made to improve its properties. in this case,
The most commonly used pitch is the Coulter pitch.
近年、バインダーピッチが含浸される炭素材や黒鉛材は
、著しく気孔率が低下し密度が高くなっている。そのた
め、従来使用されていた、含浸を阻害するキノリンネ溶
分が３〜１０ｗｔ％含有されているバインダーピッチで
は含浸効率が悪く、キノリンネ溶分の極めて少ない、例
えばキノリンネ溶分がＱ、１ｗｔ％以下のバインダーピ
ッチが用いられるようになってきている。In recent years, carbon materials and graphite materials impregnated with binder pitch have significantly lowered porosity and increased density. Therefore, the impregnation efficiency is poor with the conventionally used binder pitch containing 3 to 10 wt% of the quinoline-soluble content that inhibits impregnation. Binder pitch is increasingly being used.
〔発明が解決しようとする問題点］
しかし、キノリンネ溶分が極めて少ないバインダーピッ
チを用いても、満足な査浸効率が得られず、さらにこれ
を高める必要にせまられているのが現状Ｃある。[Problems to be solved by the invention] However, even if a binder pitch with an extremely low quinolinated content is used, a satisfactory cross-infiltration efficiency cannot be obtained, and there is currently a need to further improve this efficiency. .
本発明者等は、含浸効率をさらに高めるべく鋭意研究し
た結果、石灰（消石灰、生石灰）や炭酸カルシウムの微
粒粉末を併用するとバインダーピッチの含浸効率が高ま
ることを知見した。As a result of intensive research aimed at further increasing the impregnation efficiency, the present inventors have found that the impregnation efficiency of binder pitch is increased when fine powder of lime (slaked lime, quicklime) or calcium carbonate is used in combination.
本発明は上記の知見に基づいて開発されたもので、工業
的に実施が容易で、含浸効率の優れた炭素材用含浸剤の
製造方法を提供することを目的とする。The present invention was developed based on the above findings, and an object of the present invention is to provide a method for producing an impregnating agent for carbon materials that is industrially easy to implement and has excellent impregnation efficiency.
本発明は上記の目的を達成Ｊべくなされたもので、その
要旨は、バインダーピッチに石灰おにび／または炭酸カ
ルシウムの微粉末を添加混合する炭素剤用含浸剤の製造
方法にある。The present invention has been made to achieve the above object, and its gist lies in a method for producing an impregnating agent for a carbon agent, which comprises adding and mixing fine powder of lime and/or calcium carbonate to a binder pitch.
以下、本発明を具体的に説明する。 The present invention will be specifically explained below.
本発明に用いられるバインダーピッチは、キノリンネ溶
分が極めて少ないバインダーピッチ（例えば持分［６０
−５０７２３号公報）が望ましい。The binder pitch used in the present invention is a binder pitch with extremely low quinoline solubility (e.g.,
-50723) is desirable.
キノリンネ溶分がある程度含まれたバインダーピッチに
本発明の方法を適用した場合においても、含浸効率は高
まるが、その含浸効率は充分でない。Even when the method of the present invention is applied to a binder pitch containing a certain amount of quinoline-soluble matter, the impregnation efficiency increases, but the impregnation efficiency is not sufficient.
また、使用される石灰または炭酸カルシウムは、粒径１
０μｍ以下の粒子が２０ｗｔ％以下、粒径１μｍ以下の
粒子が２ｗｔ％以下の、平均粒径が１０〜５０μｍの範
囲のものが適当である。In addition, the lime or calcium carbonate used has a particle size of 1
It is suitable that the average particle size is in the range of 10 to 50 μm, with 20 wt% or less of particles having a particle size of 0 μm or less, and 2 wt% or less of particles having a particle size of 1 μm or less.
また、バインダーピッチに混合する石灰および／または
炭酸カルシウムの量は、混合後の輪部に対し、０．５〜
７ｗｔ％の範囲が適当である。In addition, the amount of lime and/or calcium carbonate to be mixed with the binder pitch is 0.5 to
A range of 7 wt% is suitable.
に記バインダーピッチに石灰および／または炭酸カルシ
ウムを混合することによって、含浸効率が高まる理由は
定がでないが、上記粉末が炭素材の表面を覆い、バイン
ダーピッチ中の炭素材表面の細孔を閉塞する固形分をｉ
濾過するためと思料する。Although it is unclear why the impregnation efficiency is improved by mixing lime and/or calcium carbonate with the binder pitch, the above powder covers the surface of the carbon material and blocks the pores on the surface of the carbon material in the binder pitch. The solid content is i
I think it's for filtering.
したがって、バインダーピッチに混合する石灰および／
または炭酸カルシウムの粒径については、１μｍ以下の
ような微粒子は洪過作用がなく、細孔に入り易いので、
このような微粒子は２％以下とするのがよい。また、炭
素材は種々の気孔をもつので、−概に粒度を規定するこ
とはむずかしいが、平均粒径が１０μｍ未満のものは炭
素材の気孔の閉塞を起Ｊ−ものが多く、また５０μＴｒ
Ｌ＠越えるようなものは、添加輯が自ら限られるから、
粒子数が少なくなり、ｉ濾過効果が十分でない。さらに
、石灰および／または炭酸カルシウムの量が０．５ｗｔ
％未満では、含浸効率を高める効果がなく、７ｗｔ％を
越えても効果は変らず、１￥済的でない。Therefore, the lime and/or
Regarding the particle size of calcium carbonate, fine particles of 1 μm or less do not have a flooding effect and easily enter pores.
The content of such fine particles is preferably 2% or less. In addition, since carbon materials have various pores, it is difficult to define the particle size in general, but those with an average particle size of less than 10 μm often cause blockage of the pores of the carbon material, and 50 μTr
Anything that exceeds L@ limits the amount of additions you can make.
The number of particles decreases and the filtration effect is not sufficient. Furthermore, the amount of lime and/or calcium carbonate is 0.5wt
If it is less than 7% by weight, there is no effect of increasing the impregnation efficiency, and if it exceeds 7wt%, the effect remains the same and it is not economical.
次に実施例、仕較例を示して本発明を説明する。 Next, the present invention will be explained by showing examples and comparison examples.
実施例１〜４、比較例１
軟化点９５℃（Ｒ＆Ｂ法）の含浸用コールタールピッチ
（キノリンネ溶分０．１％含右）を１７０℃に加熱し、
平均粒径、粒径１０μｍＬＪ下の粒子、粒径１μｍ以下
の粒子の含有船が異なる消石灰を種々な吊加えて撹拌混
合し、各種の試料ピッチをつくった。Examples 1 to 4, Comparative Example 1 Coal tar pitch for impregnation (containing 0.1% quinolinous content) with a softening point of 95°C (R & B method) was heated to 170°C,
Various types of slaked lime containing different average particle sizes, particles with a particle size of 10 μm or less, and particles with a particle size of 1 μm or less were suspended and mixed with stirring to prepare various sample pitches.
また、人造黒鉛電極焼成品から切出したｔ濾過板を用い
、これを含浸ピッチ罎過試験装＠（実開昭５７〜６４７
４３号公報）に取付（プ、２１０℃。In addition, we used a T-filter plate cut from a fired product of artificial graphite electrode, and used it in an impregnated pitch filter test device
Publication No. 43) (Publication, 210℃).
５ Ｋｇ／ ｃｉの条件で上記試料ピッチを渕過し、ピ
ッチ５０ｇが１濾過、流出する時間を測定し、試料ピッ
チの含浸効率を比較評価した。結果を第１表に示す。The above sample pitch was filtered under the condition of 5 kg/ci, and the time taken for 50 g of pitch to flow out after one filtration was measured, and the impregnation efficiency of the sample pitch was comparatively evaluated. The results are shown in Table 1.
なお、第１表中の消石灰の粒度は、アルコールに分散さ
せレーザー回折式粒度分布測定装置によって測定した。The particle size of the slaked lime in Table 1 was measured by dispersing it in alcohol and using a laser diffraction particle size distribution measuring device.
第１表
表より明かなように、本発明の方法によってつくられた
試料ピッチは極めて）濾過性のよいことがわかる。As is clear from Table 1, the sample pitch produced by the method of the present invention has extremely good filterability.
なお、炭酸カルシウム粉末、或いは消石灰と炭酸カルシ
・クムの混合粉末においでも、消石灰粉末を使用した場
合とほぼ同様な結果が得られた。In addition, almost the same results as when using slaked lime powder were obtained with calcium carbonate powder or mixed powder of slaked lime and calci-cum carbonate.
以上述べたように、本発明の方法はｉ濾過特性のすぐれ
た炭素材用含浸剤が得られるので、炭素材製造の際、欠
くことの出来ないピッチ含浸工程の効率が大幅に向上し
、経済的な炭素材の製造を可能とする優れた方法である
。As described above, the method of the present invention can obtain an impregnating agent for carbon materials with excellent filtration properties, so the efficiency of the pitch impregnation process, which is indispensable in the production of carbon materials, can be greatly improved and economical. This is an excellent method that makes it possible to produce carbon materials of various types.
Claims (1)
の微粉末を添加混合することを特徴とする炭素材用含浸
剤の製造方法。A method for producing an impregnating agent for carbon materials, which comprises adding and mixing fine powder of lime and/or calcium carbonate to a binder pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61214943A JPS6369780A (en) | 1986-09-11 | 1986-09-11 | Manufacture of impregnating agent for carbon material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61214943A JPS6369780A (en) | 1986-09-11 | 1986-09-11 | Manufacture of impregnating agent for carbon material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6369780A true JPS6369780A (en) | 1988-03-29 |
Family
ID=16664137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61214943A Pending JPS6369780A (en) | 1986-09-11 | 1986-09-11 | Manufacture of impregnating agent for carbon material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6369780A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008137570A (en) * | 2006-12-05 | 2008-06-19 | Toyota Motor Corp | Vehicle provided with fuel cell |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61152762A (en) * | 1984-12-27 | 1986-07-11 | Nippon Steel Corp | Pitch for impregnation of high-density carbon material |
-
1986
- 1986-09-11 JP JP61214943A patent/JPS6369780A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61152762A (en) * | 1984-12-27 | 1986-07-11 | Nippon Steel Corp | Pitch for impregnation of high-density carbon material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008137570A (en) * | 2006-12-05 | 2008-06-19 | Toyota Motor Corp | Vehicle provided with fuel cell |
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