JPS5829130B2 - How to disperse particles in media - Google Patents
How to disperse particles in mediaInfo
- Publication number
- JPS5829130B2 JPS5829130B2 JP51045192A JP4519276A JPS5829130B2 JP S5829130 B2 JPS5829130 B2 JP S5829130B2 JP 51045192 A JP51045192 A JP 51045192A JP 4519276 A JP4519276 A JP 4519276A JP S5829130 B2 JPS5829130 B2 JP S5829130B2
- Authority
- JP
- Japan
- Prior art keywords
- particles
- acid
- dispersing
- medium
- mixing
- 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
- 239000002245 particle Substances 0.000 title claims description 22
- 239000002253 acid Substances 0.000 claims description 23
- 150000002596 lactones Chemical class 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- 150000002148 esters Chemical class 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910052755 nonmetal Inorganic materials 0.000 claims description 3
- 239000010954 inorganic particle Substances 0.000 claims 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 235000019441 ethanol Nutrition 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 239000001856 Ethyl cellulose Substances 0.000 description 2
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 235000019325 ethyl cellulose Nutrition 0.000 description 2
- 229920001249 ethyl cellulose Polymers 0.000 description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002609 medium Substances 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- UVAOEHSAFKLYID-UHFFFAOYSA-N 2-hydroxytetradecane-1,2,3-tricarboxylic acid Chemical compound CCCCCCCCCCCC(C(O)=O)C(O)(C(O)=O)CC(O)=O UVAOEHSAFKLYID-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical group 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- -1 lactone salts Chemical class 0.000 description 1
- 239000011553 magnetic fluid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Colloid Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Powder Metallurgy (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Compounds Of Iron (AREA)
Description
【発明の詳細な説明】
本発明は金属、非金属粒子を水、油、ゴム、合成樹脂素
材に混合分散させる方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for mixing and dispersing metal and nonmetal particles in water, oil, rubber, and synthetic resin materials.
従来、金属、非金属微粒子を水、油等の液中に分散させ
てコロイドを作るのに各種界面活性剤を加えるが、媒体
の種類によって異なり、且つきびしい処理条件を伴なう
欠点がある。Conventionally, various surfactants are added to create colloids by dispersing metal and non-metal fine particles in liquids such as water and oil, but this method differs depending on the type of medium and has the drawback of requiring difficult processing conditions.
オたゴム、合成樹脂等弾性体に金属粒子を分散して感圧
抵抗体弾性導電体等をつくることも提案され、捷た接着
剤中に金属粉を混合して導電性接着剤としたり、硬質粒
子を混合して研削塗料を構成することが知られているが
、単に媒体中に粒子を混合攪拌しても容易には粒子が均
一に分散介在する分散体が得られず、したがって目的と
する各特性が充分には得られていない。It has also been proposed to disperse metal particles in an elastic material such as rubber or synthetic resin to make pressure-sensitive resistors, elastic conductors, etc., and to make conductive adhesives by mixing metal powder into the broken adhesive. It is known that hard particles are mixed to form an abrasive paint, but simply mixing and stirring the particles in a medium does not easily produce a dispersion in which the particles are uniformly dispersed. However, these characteristics are not fully obtained.
本発明は従来の界面活性剤に代えて吸着力が高く親水性
の３ヒドロキシ−３，４デイカルボキシペンタデカノイ
ツク酸を用いることにより良好な粒子分散を行なわせる
ようにしたものである。The present invention uses 3-hydroxy-3,4-dicarboxypentadecanoic acid, which has high adsorption power and is hydrophilic, in place of conventional surfactants, thereby achieving good particle dispersion.
この酸は、その分子構造が
であり、Ｃ０ＯＨ基、ＯＨ基等多数の極性基を有して極
めて吸着性が高く、シカも二級２個のＣ０ＯＨ基、三級
のＯＨ基は強力吸着をし、親水性の高い酸であり、粒子
表面に強く吸着して安定分散剤として効果が大きい。The molecular structure of this acid is as follows: it has many polar groups such as C0OH groups and OH groups, and has extremely high adsorption properties. However, it is a highly hydrophilic acid and strongly adsorbs to the particle surface, making it highly effective as a stable dispersant.
この酸の構造上の特徴は一級。二級の３個のＣ０ＯＨ基
を有し、三級のＯＨ基を有する。The structural characteristics of this acid are first class. It has three secondary C0OH groups and a tertiary OH group.
捷た長鎖アルキル基を持って炭素数の大きい（１０以上
）、このような構造から酸は吸着性が高く親水性であり
、捷た親油性でもあり、分散剤として効果が大きいもの
である。It has a long chain alkyl group and has a large number of carbon atoms (10 or more). Due to this structure, it has high adsorption properties for acids and is hydrophilic, and it is also lipophilic due to its short chain, making it highly effective as a dispersant. .
これは例えば、従来界面活性剤として利用されるオレイ
ン酸は親水基が１つで、しかもそれは−級であるが、こ
れに対して前記の酸は親水基を４つ有し、しかも二級２
個のＣ０ＯＨ，三級１個のＯＨ基を有するため少量添加
によっても粒子に強く吸着して親水性を現わし、添加量
によって親水性を変化しない、したがって吸着処理条件
はきびしくはなく容易に混合分散させることができる。For example, oleic acid, which is conventionally used as a surfactant, has one hydrophilic group, which is -class, whereas the above-mentioned acid has four hydrophilic groups, and is secondary to secondary.
Since it has 2 C0OH and 1 tertiary OH group, it strongly adsorbs to the particles and exhibits hydrophilicity even when added in small amounts, and the hydrophilicity does not change depending on the amount added. Therefore, the adsorption treatment conditions are not severe and mixing is easy. Can be dispersed.
また長鎖アルキル基等を持って炭素数が太きいものであ
るから親油性でもあり、油に対しても分散効果は高い。Furthermore, since it has a long chain alkyl group and has a large number of carbon atoms, it is also lipophilic and has a high dispersion effect in oil.
前記酸は脱水反応するとラクトン型構造となる。When the acid undergoes a dehydration reaction, it becomes a lactone structure.
このラクトンも強い吸着性があり分散剤として同様に有
効である。This lactone also has strong adsorption properties and is equally effective as a dispersant.
前記酸捷たはラクトンは通常粉体であり、通常はメチル
アルコールに良く溶解するので、アルコール溶液として
利用し、また−２．５ＣＯＯＮａ以上のす） ＩＪウム
で溶解度が増大し、透明石けん状になりナトリウム塩と
して、またカリウム、カルシウム塩として利用し、また
前記酸捷たはラクトンのＣ００Ｈ基にエチルアルコール
、メチルアルコール、グリセリン、エチレングリコール
等の各種アルコール類が結合し、またＯＨ基にカルボン
酸等の有機酸が結合してエステル化したものが利用でき
る。The above-mentioned acidic acid or lactone is usually a powder, and it is usually dissolved well in methyl alcohol, so it is used as an alcohol solution, and the solubility is increased with IJium (more than -2.5 COONa), and it becomes transparent soap-like. Various alcohols such as ethyl alcohol, methyl alcohol, glycerin, and ethylene glycol are bonded to the C00H group of the acid salt or lactone, and carboxylic acid is bonded to the OH group. Esterified products can be used by combining organic acids such as
次に実施例を説明する。Next, an example will be described.
実施例 １
＃６００のＷＣ粒子５５％、＃３００のＣｏ粒子２０％
とＰＶＡ１０％、エチレングリコール１０多、残エチル
セルローズを混合分散させるとき、酸をナトリウム塩と
して、これを１００ｐｐＩＩｌ添加し、混練して板状に
成形したとき、厚さ１ｍｒｒｔと１０朋のシートを作っ
て混合粒子の分散状態を測定したとき次のようであった
。Example 1 55% #600 WC particles, 20% #300 Co particles
When mixing and dispersing 10% PVA, 10% ethylene glycol, and the remaining ethyl cellulose, 100ppIIl of the acid was added as a sodium salt, and when kneaded and formed into a plate shape, a sheet with a thickness of 1 mrrt and 10 mm was made. When the dispersion state of the mixed particles was measured, it was as follows.
本発明 従 来
シート１關上 ７４％ ６１％
下 ７６多 ８２％
シート１０關上 ７３多 ４５優
下 ７６％ ８７多
このように酸を混合することによって分散性の高い均一
分散シートが得られ、これを焼結したとき極めて均質性
の高い超硬成品が得られた。This invention Conventional Sheet 1 74% 61% Lower 76 82% Sheet 10 73 45 76% 87 By mixing acids in this way, a uniformly dispersed sheet with high dispersibility can be obtained. When sintered, a cemented carbide product with extremely high homogeneity was obtained.
なｉ−表の従来のものは、前記混合に釦いて、酸のナト
リウム塩を添加しなかったものである。In the conventional example shown in Table I, the sodium salt of the acid was not added to the mixture.
実施例 ２
表面に多数の突起を形成してコンペイトウ状に生成した
６０〜８０μφのＮｉ粒子をシリコンゴム（ＫＥ−１９
９信越シリコン製）に１８％（ＶＯＷ）混合し、重合さ
せて厚さ５ｍｍの感圧抵抗体を作るとき、粒子にアルコ
ール溶解した前記酸を混合し、これを５００ｐｐｍ加え
たものはＮｉ粒子の分散性が極めて高く、１０ ｋｇ／
ｃｍの加圧により中心抵抗値が１ｃｍｔ当り０．１８Ω
で、面積１０ｃｎｔの範囲の各測定点の抵抗値のばらつ
きは次のようであった。Example 2 Ni particles with a size of 60 to 80 μΦ, which were formed into a shape with many protrusions on the surface, were coated with silicone rubber (KE-19
9 (manufactured by Shin-Etsu Silicone) at 18% (VOW) and polymerized to make a pressure-sensitive resistor with a thickness of 5 mm, the above acid dissolved in alcohol was mixed with the particles and 500 ppm of this was added. Extremely high dispersibility, 10 kg/
The center resistance value is 0.18Ω per 1cmt by applying a pressure of 1cm.
The variation in resistance value at each measurement point within an area of 10 cnt was as follows.
本発明 従来（酸無添加）
２多 ５５多
このように酸を加えたことによって粒子の分散性が良く
広い面積に亘って均一な特性の良好な感圧抵抗体が得ら
れるものである。Present invention Conventional (no acid added) 2 55 By adding acid in this way, a pressure-sensitive resistor with good particle dispersibility and uniform characteristics over a wide area can be obtained.
実施例 ３
＃１００Ｆｅ ２．５％、＃６０Ｃｒ７％、＃１５０Ｂ
３％、＃３０ＯＮｉ残の混合粉体に、エチルセルローズ
７５％、フタル酸ジオクチル１０東メチルエチルケトン
１５％の混合物を１０％混合するとき、前記酸を２００
ｐｐ［Ｉｌ添加混練し、混合体を１．１５０℃で３０分
間加熱処理したとき、強度約３２ｋｇ／−であった。Example 3 #100Fe 2.5%, #60Cr7%, #150B
When mixing 10% of a mixture of 75% ethyl cellulose, 10% dioctyl phthalate, and 15% methyl ethyl ketone to the remaining mixed powder of #30ONi, the acid
When pp[Il was added and kneaded and the mixture was heat-treated at 1.150°C for 30 minutes, the strength was about 32 kg/-.
酸無添加の従来例では２２ｋｇ／ｍｆ！ｉであった。The conventional example without acid addition is 22kg/mf! It was i.
実施例 ４
前記酸を５００ｐ陣加えた水溶液媒体中に１００〜１５
０人のＦｅ３Ｏ４を混合分散させたとき、安定分散のコ
ロイドが得られ、磁場による凝集２分離が全く起らず、
良好な磁性流体を得ることができた。Example 4 In an aqueous medium containing 500p of the above acid,
When 0 people of Fe3O4 are mixed and dispersed, a stable dispersion of colloid is obtained, and no agglomeration or separation due to the magnetic field occurs.
A good magnetic fluid could be obtained.
な釦以上は３ヒドロキシ−３，４デイカルボキシ・ベン
タデカッイック酸について説明したが、ラクトン型構造
のものも同様に有効であり、また前記したように酸捷た
はラクトンの塩類、酸またはラクトンのエステル等が実
用される。Although 3-hydroxy-3,4-dicarboxy-bentadecacic acid has been explained above, those with a lactone type structure are equally effective, and as mentioned above, acids or lactone salts, acids or lactones are also effective. esters etc. are put into practical use.
なか本発明は各種液体媒体に各種粒子を混合分散させる
のに好適であり、またゴム、合成樹脂素材に金属粒、硬
質粒子を分散させて感圧抵抗体、弾性導電体、焼結用生
テープ、ろう付テープ、焼結相生インゴット等を作るの
に適し、捷た接着剤に各種粉末粒子を混合して導電性接
着剤、研摩塗料、感磁性塗料、その他をつくるときなど
有効である。Among these, the present invention is suitable for mixing and dispersing various particles in various liquid media, and is also suitable for dispersing metal particles and hard particles in rubber and synthetic resin materials to produce pressure sensitive resistors, elastic conductors, and raw tapes for sintering. It is suitable for making brazing tapes, sintered interfering ingots, etc., and is effective when mixing various powder particles with crushed adhesives to make conductive adhesives, abrasive paints, magnetically sensitive paints, etc.
Claims (1)
当り、３ヒドロキシ−３，４デイカルボキシ・ペンタデ
カッイック酸捷たはそのラクトン、あるいはそれらの塩
、それらのエステルの少なくとも１種を添加することを
特徴とする粒子を媒体に分散させる方法。 ２３ヒドロキシ−３，４デイカルボキシ・ペンタデカッ
イック酸捷たはそのラクトン、あるいはそれらの塩、そ
れらのエステルの少なくとも１種を媒体に混合分散する
ことを特徴とする特許請求の範囲第１項に記載の粒子を
媒体に分散させる方※法。 ３３ヒドロキシ−３，４７’イカルポキシ・ベンタデカ
ッイック酸またはそのラクトン、あるいはそれらの塩、
それらのエステルの少なくとも１種を粒子と混合するこ
とを特徴とする特許請求の範囲第１項に記載の粒子を媒
体に分散させる方法。[Claims] 1. When mixing and dispersing metal and non-metal inorganic particles in a medium, 3-hydroxy-3,4-dicarboxy-pentadecacic acid salts, lactones thereof, salts thereof, and esters thereof are used. A method for dispersing particles in a medium, the method comprising adding at least one kind of particles. Claim 1 is characterized in that at least one of 23-hydroxy-3,4-dicarboxy pentadecacic acid salts, lactones thereof, salts thereof, and esters thereof are mixed and dispersed in a medium. A method* of dispersing the described particles in a medium. 33 hydroxy-3,47′ icarpoxy bentadecaic acid or its lactone, or a salt thereof,
A method for dispersing particles in a medium according to claim 1, characterized in that at least one of these esters is mixed with the particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51045192A JPS5829130B2 (en) | 1976-04-19 | 1976-04-19 | How to disperse particles in media |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51045192A JPS5829130B2 (en) | 1976-04-19 | 1976-04-19 | How to disperse particles in media |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS52127480A JPS52127480A (en) | 1977-10-26 |
| JPS5829130B2 true JPS5829130B2 (en) | 1983-06-21 |
Family
ID=12712394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51045192A Expired JPS5829130B2 (en) | 1976-04-19 | 1976-04-19 | How to disperse particles in media |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5829130B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6163626A (en) * | 1984-09-05 | 1986-04-01 | Agency Of Ind Science & Technol | Multiple chain type surfactant |
| JPH0618627B2 (en) * | 1985-10-11 | 1994-03-16 | 伊藤製油株式会社 | Dispersant for molding in the production of sintered bodies |
| JP2009057627A (en) * | 2007-09-03 | 2009-03-19 | Yutaka Ishigami | Thick nanocolloidal gold liquid, fine gold particle, and their manufacturing methods |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5019718A (en) * | 1973-05-30 | 1975-03-01 |
-
1976
- 1976-04-19 JP JP51045192A patent/JPS5829130B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5019718A (en) * | 1973-05-30 | 1975-03-01 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS52127480A (en) | 1977-10-26 |
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