JPH06219714A - Aqueous slurry of boron nitride - Google Patents
Aqueous slurry of boron nitrideInfo
- Publication number
- JPH06219714A JPH06219714A JP5034213A JP3421393A JPH06219714A JP H06219714 A JPH06219714 A JP H06219714A JP 5034213 A JP5034213 A JP 5034213A JP 3421393 A JP3421393 A JP 3421393A JP H06219714 A JPH06219714 A JP H06219714A
- Authority
- JP
- Japan
- Prior art keywords
- boron nitride
- polyoxyethylene
- aqueous slurry
- nonionic surfactant
- hlb
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、窒化ホウ素粉末を水に
分散した窒化ホウ素の水系スラリーに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aqueous slurry of boron nitride in which boron nitride powder is dispersed in water.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】窒化ホ
ウ素は、優れた離型性、化学的安定性、熱的安定性等の
特徴からさまざまな分野で使用されており、使用される
際の形態も粉末、焼結体、スラリー等多岐にわたる。2. Description of the Related Art Boron nitride is used in various fields because of its excellent releasability, chemical stability, thermal stability and the like. There are various forms such as powder, sintered body and slurry.
【０００３】このうち、窒化ホウ素スラリーは、窒化ホ
ウ素単体あるいは窒化ホウ素と他のセラミックスとの複
合体の鋳込み成形用、有機溶媒を用いる離型用などの用
途があり、このような用途では、作業性、安全性等の観
点から水系のスラリーであることが望ましく、また、で
きる限り低粘度であることも要求される。Of these, the boron nitride slurry has applications such as cast molding of boron nitride alone or a composite of boron nitride and other ceramics, release from an organic solvent, and the like. From the viewpoints of properties, safety, etc., an aqueous slurry is desirable, and it is required that the viscosity be as low as possible.
【０００４】しかしながら、窒化ホウ素スラリーを調製
する場合、従来は溶媒として有機極性溶媒を使用した
り、水系スラリーとする場合には、スラリー化の前に窒
化ホウ素粉末の表面を改質したりする必要があった。こ
れは窒化ホウ素粉末が水に分散させることが困難な材料
であり、低粘度な窒化ホウ素含有水系スラリーが得られ
なかったためである。However, when a boron nitride slurry is prepared, it is conventionally necessary to use an organic polar solvent as a solvent, and when an aqueous slurry is used, it is necessary to modify the surface of the boron nitride powder before making it into a slurry. was there. This is because the boron nitride powder is a material that is difficult to disperse in water, and a low-viscosity boron nitride-containing aqueous slurry could not be obtained.
【０００５】本発明は、上記事情に鑑みなされたもの
で、窒化ホウ素粉末の表面改質などを特にしなくとも低
粘度である窒化ホウ素の水系スラリーを提供することを
目的とする。The present invention has been made in view of the above circumstances, and an object thereof is to provide an aqueous slurry of boron nitride having a low viscosity without particularly modifying the surface of the boron nitride powder.
【０００６】[0006]
【課題を解決するための手段及び作用】本発明者は、上
記目的を達成するため鋭意検討を重ねた結果、分散剤と
してポリオキシエチレン系非イオン界面活性剤を用いる
ことにより、窒化ホウ素粉末をその表面を特に改質せず
とも水に均一分散させることができ、しかも得られる水
系スラリーが低粘度であることを知見した。またこの場
合、ポリオキシエチレン系非イオン界面活性剤として下
記式 ＨＬＢ＝Ｅ／５ （１） （式中、Ｅはポリオキシエチレン部分が界面活性剤全体
中に占める重量％である。）で示されるＨＬＢが９以上
であるものを使用することが好適であることを見い出
し、本発明をなすに至ったものである。Means and Actions for Solving the Problems As a result of intensive studies to achieve the above object, the present inventor has found that by using a polyoxyethylene-based nonionic surfactant as a dispersant, boron nitride powder can be obtained. It has been found that the surface can be uniformly dispersed in water without modification, and the resulting aqueous slurry has a low viscosity. Further, in this case, the polyoxyethylene-based nonionic surfactant is represented by the following formula HLB = E / 5 (1) (wherein, E is the weight% of the polyoxyethylene portion in the whole surfactant). The inventors have found that it is preferable to use an HLB having an HLB of 9 or more, and have completed the present invention.
【０００７】従って、本発明は、窒化ホウ素粉末をポリ
オキシエチレン系非イオン界面活性剤を分散剤として水
に分散してなる窒化ホウ素の水系スラリー、及びポリオ
キシエチレン系非イオン界面活性剤として上記式（１）
で示されるＨＬＢが９以上のものを使用する窒化ホウ素
の水系スラリーを提供する。Therefore, the present invention provides an aqueous slurry of boron nitride obtained by dispersing boron nitride powder in water using a polyoxyethylene-based nonionic surfactant as a dispersant, and a polyoxyethylene-based nonionic surfactant as described above. Formula (1)
An aqueous slurry of boron nitride using an HLB having an HLB of 9 or more is provided.
【０００８】以下、本発明について更に詳しく説明する
と、本発明の窒化ホウ素の水系スラリーは、上述したよ
うに分散剤としてポリオキシエチレン系非イオン界面活
性剤を使用したことに特徴がある。The present invention will be described in more detail below. The aqueous slurry of boron nitride of the present invention is characterized by using a polyoxyethylene nonionic surfactant as a dispersant as described above.
【０００９】このポリオキシエチレン系非イオン界面活
性剤は、ポリオキシエチレン基を親水基として有するも
ので、公知のものを使用することができ、エーテル型で
あっても、エステル型であってもよいが、脂肪族高級ア
ルコール類、アルキルフェノール類などにエチレンオキ
サイドを縮合させた下記式 ＸＯ（ＣＨ2ＣＨ2Ｏ）nＨ （但し、Ｘはアルキル基、アリール基等の親油基を示
す。）で示されるエーテル型のものが好ましく使用され
る。This polyoxyethylene-based nonionic surfactant has a polyoxyethylene group as a hydrophilic group, and known ones can be used, and it may be an ether type or an ester type. However, the following formula XO (CH 2 CH 2 O) n H in which ethylene oxide is condensed with aliphatic higher alcohols, alkylphenols and the like (wherein, X represents a lipophilic group such as an alkyl group or an aryl group) The ether type represented by is preferably used.
【００１０】この場合、上記ポリオキシエチレン系非イ
オン界面活性剤としては、下記式で示されるＨＬＢが９
以上、特に１０〜２０のものが好ましく、ＨＬＢ値が９
より低いと窒化ホウ素粉末の分散性が劣る場合が生じ
る。In this case, HLB represented by the following formula is 9 as the polyoxyethylene nonionic surfactant.
Above all, those having 10 to 20 are particularly preferable, and the HLB value is 9
If it is lower, the dispersibility of the boron nitride powder may be poor.
【００１１】ＨＬＢ＝Ｅ／５ （１） （式中、Ｅは界面活性剤中のポリオキシエチレン部分の
重量％を示す。）一方、窒化ホウ素粉末としては、平均
粒子径が０．０１〜１００μｍ、特に０．１〜２０μｍ
程度のものが好適であり、また、比表面積は１〜２００
ｍ2／ｇ、特に１５０ｍ2／ｇ以下のものが好ましい。な
お、本発明においては特に表面処理を必要としないが、
必要によっては常法に従って行っても良い。HLB = E / 5 (1) (In the formula, E represents the weight% of the polyoxyethylene portion in the surfactant.) On the other hand, the boron nitride powder has an average particle diameter of 0.01 to 100 μm. , Especially 0.1-20 μm
It is preferable that the specific surface area is 1 to 200.
It is preferably m 2 / g, particularly preferably 150 m 2 / g or less. In the present invention, surface treatment is not particularly required,
If necessary, it may be performed according to a conventional method.
【００１２】このような窒化ホウ素粉末を上述したポリ
オキシエチレン系非イオン界面活性剤を用いて水に分散
させる場合、窒化ホウ素粉末の濃度は用途により適宜選
定することができ、また上記ポリオキシエチレン系非イ
オン界面活性剤は窒化ホウ素粉末１００部（重量部、以
下同様）に対し０．１〜３０部、特に１〜２０部の使用
量とすることが好ましい。この場合、界面活性剤の量が
０．１部未満では効果がない場合があり、３０部より多
くしても添加効果の向上はなく、経済的に不利となる場
合がある。When such a boron nitride powder is dispersed in water using the above-mentioned polyoxyethylene-based nonionic surfactant, the concentration of the boron nitride powder can be appropriately selected depending on the application, and the above polyoxyethylene is used. The nonionic surfactant is preferably used in an amount of 0.1 to 30 parts, especially 1 to 20 parts, per 100 parts (parts by weight, the same applies hereinafter) of boron nitride powder. In this case, if the amount of the surfactant is less than 0.1 part, no effect may be obtained, and if it exceeds 30 parts, the effect of addition may not be improved, which may be economically disadvantageous.
【００１３】なお、本発明の窒化ホウ素の水系分散体に
は、必要に応じ上記成分以外に他の成分を配合すること
ができ、例えば鋳込成形用スラリーを作成する際には他
の分散剤、結合剤、消泡剤などを配合することができ
る。If necessary, the boron nitride aqueous dispersion of the present invention may contain other components in addition to the above components. For example, when a slurry for casting is prepared, another dispersant is used. , A binder, an antifoaming agent and the like can be added.
【００１４】なお、スラリー化の方法は常法に準じて行
うことができ、例えばボールミルなどを使用して混合、
スラリー化することができる。。The slurry can be formed according to a conventional method, for example, mixing using a ball mill or the like,
It can be slurried. .
【００１５】このようにして得られる本発明の窒化ケイ
素の水系スラリーは、低粘度であり、具体的には平均粒
子径０．１μｍの窒化ホウ素１００部に対してポリオキ
シエチレン系非イオン界面活性剤１５部と水５０部とを
ボールミルで混合した場合、水系スラリーとして２５℃
で一般的に１０００ｃｐｓ以下のものを得ることができ
る。The thus-obtained aqueous slurry of silicon nitride of the present invention has a low viscosity, and specifically, polyoxyethylene-based nonionic surface active agent is added to 100 parts of boron nitride having an average particle diameter of 0.1 μm. When 15 parts of the agent and 50 parts of water are mixed by a ball mill, an aqueous slurry is prepared at 25 ° C.
In general, it is possible to obtain the one having 1000 cps or less.
【００１６】[0016]
【実施例】以下、実施例と比較例を示し、本発明を具体
的に示すが、本発明は下記の実施例に制限されるもので
はない。EXAMPLES Hereinafter, the present invention will be specifically shown by showing Examples and Comparative Examples, but the present invention is not limited to the following Examples.
【００１７】［実施例１〜５、比較例１〜４］平均粒子
径０．１μｍの窒化ホウ素粉末１００部、水５０部及び
表１に示す界面活性剤１５部をボールミル中で１６時間
混合して水系スラリーを調製し、この混合後のスラリー
の粘度を測定した。結果を表１に併記する。Examples 1 to 5 and Comparative Examples 1 to 4 100 parts of boron nitride powder having an average particle diameter of 0.1 μm, 50 parts of water and 15 parts of the surfactant shown in Table 1 were mixed in a ball mill for 16 hours. To prepare an aqueous slurry, and the viscosity of the mixed slurry was measured. The results are also shown in Table 1.
【００１８】[0018]
【表１】 [Table 1]
【００１９】[0019]
【発明の効果】本発明の窒化ホウ素の水系スラリーは、
粘度が低く、鋳込み成形用、離型用などの用途に好適に
用いることができる。The aqueous boron nitride slurry of the present invention comprises:
It has a low viscosity and can be suitably used for applications such as casting molding and mold release.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０８Ｋ 3/38 Ｃ０８Ｌ 71/02 ＬＱＤ 9167−4Ｊ ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 5 Identification code Office reference number FI Technical display location C08K 3/38 C08L 71/02 LQD 9167-4J
Claims (2)
イオン界面活性剤を分散剤として水に分散してなる窒化
ホウ素の水系スラリー。1. An aqueous slurry of boron nitride obtained by dispersing boron nitride powder in water using a polyoxyethylene nonionic surfactant as a dispersant.
として下記式（１）で示されるＨＬＢが９以上のものを
用いる請求項１記載の窒化ホウ素の水系スラリー。 ＨＬＢ＝Ｅ／５ （１） （式中、Ｅはポリオキシエチレン部分が界面活性剤全体
中に占める重量％である。）2. The aqueous boron nitride slurry according to claim 1, wherein a polyoxyethylene nonionic surfactant having an HLB represented by the following formula (1) of 9 or more is used. HLB = E / 5 (1) (In the formula, E is the weight% of the polyoxyethylene portion in the whole surfactant.)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5034213A JPH06219714A (en) | 1993-01-29 | 1993-01-29 | Aqueous slurry of boron nitride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5034213A JPH06219714A (en) | 1993-01-29 | 1993-01-29 | Aqueous slurry of boron nitride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06219714A true JPH06219714A (en) | 1994-08-09 |
Family
ID=12407885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5034213A Pending JPH06219714A (en) | 1993-01-29 | 1993-01-29 | Aqueous slurry of boron nitride |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06219714A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08208873A (en) * | 1995-01-30 | 1996-08-13 | Mitsubishi Cable Ind Ltd | Polymer composition for foaming extrusion molding |
| JP2004537489A (en) * | 2001-08-07 | 2004-12-16 | サンーゴバン セラミックス アンド プラスティクス，インコーポレイティド | High solid content hBN slurry, hBN paste, spherical hBN powder, and methods for producing and using them |
| JP2007191337A (en) * | 2006-01-18 | 2007-08-02 | Denki Kagaku Kogyo Kk | Boron nitride powder, its manufacturing method and its use |
| WO2007111698A2 (en) | 2005-11-10 | 2007-10-04 | The Lubrizol Corporation | Process for preparing dispersions |
| US7976941B2 (en) | 1999-08-31 | 2011-07-12 | Momentive Performance Materials Inc. | Boron nitride particles of spherical geometry and process for making thereof |
| JP2014044084A (en) * | 2012-08-24 | 2014-03-13 | Hitachi Powdered Metals Co Ltd | Neutron absorber, and processing method of molten fuel |
| WO2014087375A1 (en) | 2012-12-07 | 2014-06-12 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Suspension of boron nitride particles |
| TWI547436B (en) * | 2011-11-29 | 2016-09-01 | Mitsubishi Chem Corp | a boron nitride agglomerated particle, a composition containing the same, and a three-dimensional integrated circuit having a layer composed of the composition |
| KR20160124516A (en) | 2015-04-20 | 2016-10-28 | 주식회사 엘지화학 | Boron nitride dispersion |
| US9550888B2 (en) | 1999-08-31 | 2017-01-24 | Momentive Performance Materials Inc. | Low viscosity filler composition of boron nitride particles of spherical geometry and process |
| JP2019505599A (en) * | 2015-12-14 | 2019-02-28 | アルテコ エヌヴィ | Stabilization of hexagonal boron nitride nanoparticles |
| EP3434754A4 (en) * | 2016-03-24 | 2019-11-27 | GC Corporation | Wax pattern surface-treating agent |
| KR102401004B1 (en) | 2021-10-08 | 2022-05-23 | 주식회사 딜라이트 | Painting Composition containing BN and having heat dissipation property, and LED Lamp Device employing the same |
-
1993
- 1993-01-29 JP JP5034213A patent/JPH06219714A/en active Pending
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08208873A (en) * | 1995-01-30 | 1996-08-13 | Mitsubishi Cable Ind Ltd | Polymer composition for foaming extrusion molding |
| US9550888B2 (en) | 1999-08-31 | 2017-01-24 | Momentive Performance Materials Inc. | Low viscosity filler composition of boron nitride particles of spherical geometry and process |
| US7976941B2 (en) | 1999-08-31 | 2011-07-12 | Momentive Performance Materials Inc. | Boron nitride particles of spherical geometry and process for making thereof |
| US9079801B2 (en) | 1999-08-31 | 2015-07-14 | Momentive Performance Materials Inc. | Boron nitride particles of spherical geometry and process of making |
| USRE47635E1 (en) | 2001-08-07 | 2019-10-08 | Saint-Gobain Ceramics & Plastics, Inc. | High solids hBN slurry, hBN paste, spherical hBN powder, and methods of making and using them |
| USRE45923E1 (en) | 2001-08-07 | 2016-03-15 | Saint-Gobain Ceramics & Plastics, Inc. | High solids HBN slurry, HBN paste, spherical HBN powder, and methods of making and using them |
| JP2004537489A (en) * | 2001-08-07 | 2004-12-16 | サンーゴバン セラミックス アンド プラスティクス，インコーポレイティド | High solid content hBN slurry, hBN paste, spherical hBN powder, and methods for producing and using them |
| USRE45803E1 (en) | 2001-08-07 | 2015-11-17 | Saint-Gobain Ceramics & Plastics, Inc. | High solids HBN slurry, HBN paste, spherical HBN powder, and methods of making and using them |
| JP2009035484A (en) * | 2001-08-07 | 2009-02-19 | Saint-Gobain Ceramics & Plastics Inc | HIGH SOLID hBN SLURRY, hBN PASTE, SPHERICAL hBN POWDER, AND METHOD OF PRODUCING AND USING THEM |
| WO2007111698A2 (en) | 2005-11-10 | 2007-10-04 | The Lubrizol Corporation | Process for preparing dispersions |
| WO2007111698A3 (en) * | 2005-11-10 | 2008-01-03 | Lubrizol Corp | Process for preparing dispersions |
| JP2007191337A (en) * | 2006-01-18 | 2007-08-02 | Denki Kagaku Kogyo Kk | Boron nitride powder, its manufacturing method and its use |
| TWI547436B (en) * | 2011-11-29 | 2016-09-01 | Mitsubishi Chem Corp | a boron nitride agglomerated particle, a composition containing the same, and a three-dimensional integrated circuit having a layer composed of the composition |
| US10400151B2 (en) | 2011-11-29 | 2019-09-03 | Mitsubishi Chemical Corporation | Agglomerated boron nitride particles, composition containing said particles, and three- dimensional integrated circuit having layer comprising said composition |
| US9822294B2 (en) | 2011-11-29 | 2017-11-21 | Mitsubishi Chemical Corporation | Agglomerated boron nitride particles, composition containing said particles, and three-dimensional integrated circuit having layer comprising said composition |
| JP2014044084A (en) * | 2012-08-24 | 2014-03-13 | Hitachi Powdered Metals Co Ltd | Neutron absorber, and processing method of molten fuel |
| FR2999172A1 (en) * | 2012-12-07 | 2014-06-13 | Saint Gobain Ct Recherches | SUSPENSION OF BORON NITRIDE PARTICLES. |
| WO2014087375A1 (en) | 2012-12-07 | 2014-06-12 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Suspension of boron nitride particles |
| KR20160124516A (en) | 2015-04-20 | 2016-10-28 | 주식회사 엘지화학 | Boron nitride dispersion |
| JP2019505599A (en) * | 2015-12-14 | 2019-02-28 | アルテコ エヌヴィ | Stabilization of hexagonal boron nitride nanoparticles |
| EP3434754A4 (en) * | 2016-03-24 | 2019-11-27 | GC Corporation | Wax pattern surface-treating agent |
| KR102401004B1 (en) | 2021-10-08 | 2022-05-23 | 주식회사 딜라이트 | Painting Composition containing BN and having heat dissipation property, and LED Lamp Device employing the same |
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