JPH0681839B2 - Lubricant release agent - Google Patents
Lubricant release agentInfo
- Publication number
- JPH0681839B2 JPH0681839B2 JP62104348A JP10434887A JPH0681839B2 JP H0681839 B2 JPH0681839 B2 JP H0681839B2 JP 62104348 A JP62104348 A JP 62104348A JP 10434887 A JP10434887 A JP 10434887A JP H0681839 B2 JPH0681839 B2 JP H0681839B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- powder
- release agent
- soluble phosphate
- coating film
- 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 - Lifetime
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、窒化硼素（以下BNと称する）粉末を用いた耐
熱性を有する高温用固体潤滑あるいは離型剤の用途に供
する水分散組成物に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a water-dispersed composition for use as a solid lubricant for high temperature or for use as a mold release agent having heat resistance using boron nitride (hereinafter referred to as BN) powder. It is about.
本発明の潤滑離型剤は、主として、アルミニウムまたは
アルミニウム合金の押出成形時の高温固体潤滑剤、ある
いはアルミニウムダイキャスト等の高温金型離型剤とし
て用いられるもので、従来この種の潤滑離型剤として
は、黒鉛粉末を分散させた油性もしくは水性のエマルジ
ョン型のものが使用されている。このような従来の黒鉛
粉末−有機バインダー系潤滑離型剤の場合、次のような
多くの欠点を有していた。The lubricant release agent of the present invention is mainly used as a high temperature solid lubricant during extrusion molding of aluminum or aluminum alloy, or a high temperature mold release agent such as aluminum die cast. As the agent, an oily or aqueous emulsion type in which graphite powder is dispersed is used. Such a conventional graphite powder-organic binder-based lubricant release agent has many drawbacks as follows.
すなわち、 （１） 黒鉛はアルニウムあるいはその合金と反応し易
く、潤滑剤もしくは離型剤として使用した場合、アルミ
ニウムあるいはその合金表面に熱間においてAl4C3等の
化合物を形成し、押出成形、鋳込成形したアルミニウム
製品の欠陥の生成につながる。That is, (1) graphite easily reacts with aluminum and its alloys, and when used as a lubricant or mold release agent, it forms a compound such as Al 4 C 3 on the surface of aluminum or its alloy while hot, and extrusion molding, This leads to the production of defects in cast aluminum products.
（２） 有機バインダは200℃以上に熱せられた場合、
分解して多量のガスを発生し、アルミニウムダイキャス
ト製品などの表面に多孔質の欠陥部を生起させる。(2) When the organic binder is heated above 200 ℃,
Decomposes to generate a large amount of gas, causing porous defects on the surface of aluminum die cast products and the like.
（３） （２）において述べたように発生した多量のガ
スおよび黒色の黒鉛粉末は、作業環境を極端に悪化させ
る。(3) A large amount of gas and black graphite powder generated as described in (2) extremely deteriorate the working environment.
上記問題点を解決するために特開昭55−29506号公報に
おいて開示されるように、BN粉末を主体とする高温金型
離型剤が提案されている。BN粉末を主体とするこのよう
な潤滑離型剤により、前述の（１）〜（３）に示した問
題点はかなり解決できる。しかし、150℃以上の高温と
なった被塗布表面の場合、必ずしも均一で良好な塗膜は
形成されない。また、150℃以下で塗膜が形成されたと
しても、それを300℃以上に加熱した場合、剥離してし
まう場合が多いという欠点を有していた。In order to solve the above problems, a high temperature mold release agent mainly composed of BN powder has been proposed as disclosed in Japanese Patent Laid-Open No. 29506/55. By using such a lubricant release agent mainly composed of BN powder, the problems shown in the above (1) to (3) can be considerably solved. However, in the case of the surface to be coated which has a high temperature of 150 ° C. or higher, a uniform and good coating film is not always formed. Further, even if a coating film is formed at 150 ° C. or lower, it has a drawback that if it is heated to 300 ° C. or higher, it often peels off.
本発明の目的は、従来の黒鉛粉末−有機バインダ系潤滑
離型剤、あるいは黒鉛粉末の代わりにBN粉末を配合した
離型剤における前述の問題点を解決し、常温から高温ま
での任意の温度の材料表面に塗布しても、均一な塗膜を
形成し、しかも作業環境の汚染のない潤滑離型剤を提供
することにある。The object of the present invention is to solve the above-mentioned problems in the conventional graphite powder-organic binder type lubricant release agent, or the release agent in which BN powder is blended in place of graphite powder, and any temperature from normal temperature to high temperature. Another object of the present invention is to provide a lubricating mold release agent that forms a uniform coating film even when applied to the surface of the above material, and does not pollute the working environment.
本発明者らは、BN粉末を各種無機バインダーからなる組
成物を調合し、種々の温度の被塗布表面にスプレーにて
塗布し、形成された塗膜の性状、潤滑性等を調べた結
果、BN粉末、水溶性リン酸塩およびコロイド状シリカを
含有する水分散組成物によって最も均一な塗膜が形成さ
れ、潤滑性、離型性も優れることを見出し、本発明を完
成した。The present inventors prepared a composition of various inorganic binders BN powder, sprayed on the surface to be coated at various temperatures, the properties of the coating film formed, the results of examining the lubricity, etc., The present invention has been completed by finding that the most uniform coating film is formed by the water-dispersed composition containing BN powder, water-soluble phosphate and colloidal silica, and the lubricity and releasability are excellent.
本発明の具体的構成は、基材として窒化硼素粉末、バイ
ンダとして水溶性リン酸塩およびコロイド状シリカを含
有する水分散組成物であって、窒化硼素粉末は一次粒子
の平均粒径が0.5〜20μｍで、かつ水分散組成物中の濃
度が１〜35重量％、窒化硼素粉末と水溶性リン酸塩との
混合比が窒化硼素粉末／水溶性リン酸塩（無水物）の重
量比で表わして２〜100で、コロイド状シリカの水分散
組成物中の濃度がSiO2で表して0.1〜20重量％で、残部
が水および分散剤とから成ることを特徴とする潤滑離型
剤である。The specific configuration of the present invention is a water-dispersed composition containing a boron nitride powder as a base material, a water-soluble phosphate as a binder, and colloidal silica, wherein the boron nitride powder has an average primary particle size of 0.5 to 20 μm, the concentration in the aqueous dispersion composition is 1 to 35% by weight, and the mixing ratio of the boron nitride powder and the water-soluble phosphate is represented by the weight ratio of boron nitride powder / water-soluble phosphate (anhydride). 2 to 100, the concentration of colloidal silica in the aqueous dispersion composition is 0.1 to 20% by weight expressed as SiO 2 , and the balance is water and a dispersant. .
以下、本発明を詳細に説明する。 Hereinafter, the present invention will be described in detail.
本発明の水分散組成物が潤滑性および離型性機能を有す
るのは、基本成分として配合するBN粉末の性質によるも
のである。BNは黒鉛と類似の層状化合物で、かつ化学的
にもAl等に対して安定した性質を有している。潤滑性機
能は層状化合物の層間の滑りから発現する。離型性は主
としてAl等の金属との反応性と大きく関係し、黒鉛と比
べてBNの方が溶融Alとの反応性は低く、黒鉛粉末を用い
るよりもBN粉末を用いた方が離型性が優れている。The reason why the water-dispersed composition of the present invention has a lubricating property and a releasing property is due to the properties of the BN powder blended as the basic component. BN is a layered compound similar to graphite and has a chemically stable property with respect to Al and the like. The lubricity function develops from the slip between the layers of the layered compound. Releasability is largely related to reactivity with metals such as Al, and BN has lower reactivity with molten Al than graphite, and BN powder is more releasable than graphite powder. It has excellent properties.
本発明において、配合するBN粉末の粒度を１次粒子の平
均粒径として0.5〜20μｍに限定する。平均粒径が0.5μ
ｍより小さいと、BN粉末の潤滑性の発現が困難であり、
20μｍを越えると、分散剤を添加しても水中に均一に分
散させることが困難となる。In the present invention, the particle size of the BN powder to be blended is limited to 0.5 to 20 μm as the average particle size of primary particles. Average particle size is 0.5μ
If it is smaller than m, it is difficult to develop the lubricity of BN powder,
When it exceeds 20 μm, it becomes difficult to disperse it uniformly in water even if a dispersant is added.
本発明においては、BN粉末の水分散組成物の濃度を１〜
35重量％に限定する。BN粉の前記濃度が１重量％より小
さくても、35重量％を越えても、均一塗布が困難とな
り、共に離型性が不良となる。In the present invention, the concentration of the aqueous dispersion composition of BN powder is 1 to
Limited to 35% by weight. Even if the concentration of the BN powder is less than 1% by weight or exceeds 35% by weight, uniform coating becomes difficult and the releasability becomes poor.
本発明においては、BN粉末のバインダとして水溶性リン
酸塩を用いる。水溶性リン酸塩の種類については特に限
定されないが、リン酸ナトリウム、リン酸カリウム、リ
ン酸アンモニウムのほか、水溶性のリン酸マグネシウ
ム、リン酸アルミニウム、リン酸亜鉛等も好適に使用さ
れる。水溶性リン酸塩はBN粉末の水分散組成物中に完全
に溶解し、水分散組成物が被塗布面上で乾燥するとバイ
ンダとなり、潤滑性を有するBN粉末を塗膜中に均一に安
定に保持し、塗膜として潤滑性、離型性機能を付与する
ためである。In the present invention, a water-soluble phosphate is used as a binder for BN powder. The kind of the water-soluble phosphate is not particularly limited, but in addition to sodium phosphate, potassium phosphate, ammonium phosphate, water-soluble magnesium phosphate, aluminum phosphate, zinc phosphate and the like are also preferably used. The water-soluble phosphate is completely dissolved in the water-dispersed composition of BN powder, and becomes a binder when the water-dispersed composition is dried on the coated surface, and the BN powder having lubricity is uniformly and stably formed in the coating film. This is for holding and imparting a lubricating property and a releasing property as a coating film.
本発明においては、BN粉末と水溶性リン酸塩の配合比を
BN粉末／水溶性リン酸塩（無水物）の重量比で表して２
〜100に限定する。重量比が２よりも小さいと無機バイ
ンダとしての水溶性リン酸塩が多すぎてBN粉末の潤滑
性、離型性機能よりも水溶性リン酸塩の被膜の機能が出
てしまい、本発明の目的とする潤滑離型剤としては使え
ない。逆に重量比が100よりも多いと、無機バインダの
量が少な過ぎて、塗膜中にBN粉末を保持することができ
ないので潤滑離型剤としての機能を出すことができな
い。In the present invention, the mixing ratio of BN powder and water-soluble phosphate
2 by weight ratio of BN powder / water-soluble phosphate (anhydride)
Limited to ~ 100. If the weight ratio is less than 2, the amount of the water-soluble phosphate as an inorganic binder is too large, and the function of the water-soluble phosphate film appears rather than the lubricity and releasability of the BN powder. It cannot be used as the target lubricant release agent. On the other hand, when the weight ratio is more than 100, the amount of the inorganic binder is too small to hold the BN powder in the coating film, so that the function as a lubricant release agent cannot be exerted.
本発明は、以上述べたBN粉末、水溶性リン酸塩に加え
て、さらにバインダとしてコロイド状シリカを配合す
る。本発明におけるコロイド状シリカとは、粒径が１〜
1000nmのSiO2またはその水和物が水に分散、懸濁したコ
ロイドで、このようなコロイド状シリカを配合する目的
は、SiO2成分を塗膜中に均一に分散させることにより、
塗膜の均一性、均質性を向上させることにある。さらに
水溶性リン酸塩のバインダ中にSiO2成分が固溶すること
により、塗膜の耐熱性も上げることができる。本発明に
おいては、コロイド状シリカを0.1〜20重量％配合す
る。配合量が0.1重量％よりも低いと配合する効果がな
く、20重量％よりも多いと、SiO2の多い硬質塗膜しか形
成されず、潤滑性のある塗膜ができない。In the present invention, in addition to the BN powder and the water-soluble phosphate described above, colloidal silica is further compounded as a binder. The colloidal silica in the present invention has a particle size of 1 to
1000 nm SiO 2 or a hydrate thereof is a colloid dispersed and suspended in water, and the purpose of compounding such colloidal silica is to uniformly disperse the SiO 2 component in the coating film.
It is to improve the uniformity and homogeneity of the coating film. Furthermore, the heat resistance of the coating film can be increased by the solid solution of the SiO 2 component in the binder of the water-soluble phosphate. In the present invention, 0.1 to 20% by weight of colloidal silica is blended. If the blending amount is less than 0.1% by weight, there is no effect of blending, and if the blending amount is more than 20% by weight, only a hard coating film having a large amount of SiO 2 is formed and a coating film having lubricity cannot be obtained.
本発明においては、前記のBN粉末と水溶性リン酸塩とコ
ロイド状シリカを水に分散あるいは溶解して水分散組成
物の潤滑離型用塗布剤とするが、その他、少量の分散剤
を添加する。分散剤はBN粉末を一様に水に分散させるた
めに添加するもので、通常の界面活性剤の作用をするも
のが使用される。本発明においては分散剤の種類は特に
限定されないが、例えばリグニンスルホン酸ソーダ、カ
ルボキシメチルセルロースが使用可能で、その量は１重
量％以下が好適である。In the present invention, the above-mentioned BN powder, water-soluble phosphate and colloidal silica are dispersed or dissolved in water to form a lubricant release coating agent of an aqueous dispersion composition, but in addition, a small amount of a dispersant is added. To do. The dispersant is added to uniformly disperse the BN powder in water, and a dispersant that acts as a normal surfactant is used. In the present invention, the type of dispersant is not particularly limited, but for example, sodium lignin sulfonate and carboxymethyl cellulose can be used, and the amount thereof is preferably 1% by weight or less.
本発明の潤滑離型剤は、BN粉末等の各原料をボールミル
等で均一に混合し、水分散相としたスラリー状態として
調合され、刷毛塗りも可能であるし、スプレーにて塗布
してもよい。塗布膜の厚みは経済性も考慮して、乾燥後
で100μｍ以下が好適である。The lubricant release agent of the present invention is prepared by uniformly mixing each raw material such as BN powder with a ball mill or the like to prepare a slurry state of an aqueous dispersion phase, and can be brush-coated or even sprayed. Good. The thickness of the coating film is preferably 100 μm or less after drying in consideration of economy.
本発明の潤滑離型剤は、100℃前後の低温度から300℃以
上の高温度の材料表面にまで塗布可能で、密着性のよい
均一な塗膜が形成される。すなわち潤滑性、離型性とい
った目的、あるいは被塗布材料の温度などの条件に合わ
せて、最適の、BN粉末の１次粒子の平均粒径および添加
量、水溶性リン酸塩の種類、BN粉末／水溶性リン酸塩
（無水物）の重量比、分散剤の種類および添加量および
スラリー濃度が適宜選択可能である。The lubricant release agent of the present invention can be applied to a material surface having a low temperature of about 100 ° C. to a high temperature of 300 ° C. or higher, and a uniform coating film having good adhesion is formed. That is, the average particle size and addition amount of primary particles of BN powder, the type of water-soluble phosphate, BN powder, which are optimal according to the purpose such as lubricity and releasability, or the conditions such as the temperature of the coating material, The weight ratio of / water-soluble phosphate (anhydride), the type and amount of the dispersant, and the slurry concentration can be appropriately selected.
１次粒子の平均粒径が4.5μｍのBN粉末を用い、第１表
に示した各種組成のBN粉末−水溶性リン酸マグネシウム
−コロイド状シリカ系の水分散組成物を調合し、ステン
レス板表面に約50μｍの膜厚となるように塗布し、得ら
れた塗膜の外観を調べた。さらに摩擦摩耗試験機を用い
たリングオンリングテストにより潤滑性を調べ、次に70
0℃の溶融Alに塗膜つきのステンレス板を浸漬し、塗膜
と溶融Alとの反応性により離型性も評価した。結果を比
較例と共に第１表に示す。Using BN powder having an average primary particle diameter of 4.5 μm, BN powder having various compositions shown in Table 1-water-soluble magnesium phosphate-colloidal silica-based water dispersion composition was prepared, and the stainless steel plate surface was prepared. Was applied to give a film thickness of about 50 μm, and the appearance of the obtained coating film was examined. The ring-on-ring test with a friction and wear tester was used to check the lubricity, and then 70
The stainless steel plate with the coating film was immersed in molten Al at 0 ° C, and the releasability was also evaluated by the reactivity between the coating film and the molten Al. The results are shown in Table 1 together with the comparative examples.
第１表から明らかなように、本発明の水分散組成物から
なる潤滑離型剤を用いることにより、摩擦係数の小さい
潤滑性に優れ、かつ溶融Alとの反応性の低い離型性に優
れた塗膜が形成できる。As is clear from Table 1, by using the lubricating mold release agent comprising the water-dispersed composition of the present invention, excellent lubricity with a small friction coefficient and excellent mold release property with low reactivity with molten Al are obtained. A coating film can be formed.
〔発明の効果〕 本発明のBN粉末−水溶性リン酸塩−コロイド状シリカ状
の水分散組成物を用いることにより、常温から高温まで
の任意の温度の材料表面に塗布しても、均一な潤滑性、
離型性に優れた塗膜が形成でき、しかも作業環境の汚染
のない潤滑離型剤を提供することができた。 [Effects of the Invention] By using the BN powder-water-soluble phosphate-colloidal silica-like water-dispersed composition of the present invention, even if it is applied to the material surface at any temperature from normal temperature to high temperature, it is uniform. Lubricity,
It was possible to provide a lubricating mold release agent capable of forming a coating film having excellent mold release properties and having no contamination of the working environment.
───────────────────────────────────────────────────── 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 Ｃ１０Ｍ 103:06） Ｄ 9159−4Ｈ Ｃ１０Ｎ 20:06 Ｚ 8217−4Ｈ 40:24 40:36 50:08 (56)参考文献 特開 昭52−150422（ＪＰ，Ａ) 特公 昭47−39816（ＪＰ，Ｂ１) 特公 昭59−5534（ＪＰ，Ｂ２)─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location C10M 103: 06) D 9159-4H C10N 20:06 Z 8217-4H 40:24 40:36 50: 08 (56) References JP-A-52-150422 (JP, A) JP-B 47-39816 (JP, B1) JP-B 59-5534 (JP, B2)
Claims (1)
水溶性リン酸塩およびコロイド状シリカを含有する水分
散組成物であって、窒化硼素粉末は一次粒子の平均粒径
が0.5〜20μｍで、かつ水分散組成物中の濃度が１〜35
重量％、窒化硼素粉末と水溶性リン酸塩との混合比が窒
化硼素粉末／水溶性リン酸塩（無水物）の重量比で表わ
して２〜100で、コロイド状シリカの水分散組成物中の
濃度がSiO2で表して0.1〜20重量％で、残部が水および
分散剤とから成ることを特徴とする潤滑離型剤。1. A water-dispersed composition containing boron nitride powder as a base material, water-soluble phosphate as a binder, and colloidal silica, wherein the boron nitride powder has an average primary particle size of 0.5 to 20 μm. And the concentration in the water dispersion composition is 1 to 35
% By weight, and the mixing ratio of the boron nitride powder and the water-soluble phosphate is from 2 to 100 in terms of the weight ratio of boron nitride powder / water-soluble phosphate (anhydride), in an aqueous dispersion composition of colloidal silica. The lubricant release agent has a concentration of 0.1 to 20% by weight expressed as SiO 2 , and the balance is water and a dispersant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62104348A JPH0681839B2 (en) | 1987-04-30 | 1987-04-30 | Lubricant release agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62104348A JPH0681839B2 (en) | 1987-04-30 | 1987-04-30 | Lubricant release agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63270798A JPS63270798A (en) | 1988-11-08 |
| JPH0681839B2 true JPH0681839B2 (en) | 1994-10-19 |
Family
ID=14378384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62104348A Expired - Lifetime JPH0681839B2 (en) | 1987-04-30 | 1987-04-30 | Lubricant release agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0681839B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000053705A1 (en) * | 1999-03-05 | 2000-09-14 | Chuo Hatsumei Institute Co., Ltd. | Lubricating and releasing composition for plastic working |
| JP5069394B2 (en) * | 2003-04-21 | 2012-11-07 | 千代田ケミカル株式会社 | Water-dispersed metal processing agent composition and method for producing the same |
| JPWO2019087573A1 (en) * | 2017-11-01 | 2020-11-12 | 株式会社Moresco | Lubricant composition for plastic working |
| CN108300534B (en) * | 2018-02-26 | 2021-04-06 | 东莞市翔通光电技术有限公司 | Solid lubricant, preparation method thereof and insulated optical socket embedded with solid lubricant |
| CN108913318B (en) * | 2018-07-25 | 2021-04-20 | 刘滔 | Concrete release agent and preparation method thereof |
| US20210163288A1 (en) | 2018-08-07 | 2021-06-03 | Denka Company Limited | Hexagonal boron nitride powder and method for producing hexagonal boron nitride powder |
| US20220402759A1 (en) | 2019-11-19 | 2022-12-22 | Denka Company Limited | Hexagonal boron nitride powder |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52150422A (en) * | 1976-06-09 | 1977-12-14 | Toyo Glass Co Ltd | Lubricating release agent |
| JPS595534A (en) * | 1982-06-30 | 1984-01-12 | 松下電工株式会社 | Electronic circuit mounting relay |
-
1987
- 1987-04-30 JP JP62104348A patent/JPH0681839B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63270798A (en) | 1988-11-08 |
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