JPS6324638B2 - - Google Patents
Info
- Publication number
- JPS6324638B2 JPS6324638B2 JP57207655A JP20765582A JPS6324638B2 JP S6324638 B2 JPS6324638 B2 JP S6324638B2 JP 57207655 A JP57207655 A JP 57207655A JP 20765582 A JP20765582 A JP 20765582A JP S6324638 B2 JPS6324638 B2 JP S6324638B2
- Authority
- JP
- Japan
- Prior art keywords
- silicone oil
- sliding
- sealed
- sliding material
- mechanical seals
- 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
- 239000000463 material Substances 0.000 claims description 21
- 229920001296 polysiloxane Polymers 0.000 claims description 8
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 5
- 229920002545 silicone oil Polymers 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 229920003216 poly(methylphenylsiloxane) Polymers 0.000 claims description 4
- -1 polysiloxane Polymers 0.000 claims description 4
- 230000002209 hydrophobic effect Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 10
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000012258 stirred mixture Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3496—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member use of special materials
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
- Lubricants (AREA)
Description
本発明はメカニカルシール用摺動材に係り、さ
らに詳しくは該摺動材の材料中に被シール液と疎
性の関係にあり、かつ潤滑性のある物質を加えて
なり、シール性能を向上せしめるとともに、異常
摩耗を防止し長期耐久性に優れたメカニカルシー
ル用摺動材を提供するものである。
各種軸封技術に用いられるメカニカルシール
は、シヤフト等回転側部材の動きに従動する一方
の摺動材と、ハウジング等固定側部材に取着され
る他方の摺動材との対向摺動面間にて被シール液
の漏洩を阻止する構成になる。かかるメカニカル
シールは前記摺動面間の間隙が小さいほど被シー
ル液の漏洩量を少なく押さえることができるが、
該間隙が小さくなればなるほど乾燥摩耗になり易
く、焼付き現象を生じて異常摩耗の原因となる。
一方、前記摺動面間の間隙を比較的大きく設定し
たときは、該間隙に被シール液が侵入し易くなり
正常な潤滑状態を維持することができるが、常に
一定量の被シール液の漏洩を避けることができな
い。メカニカルシールは、このようにシール性能
の向上と異常摩耗の防止という互いに相反する問
題を克服しなければならないが、従来は構造上ま
たは材質上の種種の理由から抜本的な解決策が得
られず、いずれか一方の問題に対して重点的に対
処して来たのが現状である。
本発明は以上の点に鑑みてなされたものであ
り、本願発明者らの永年にわたる研究の結果、材
料中に被シール液と疎性の関係にあり、かつ潤滑
性のある物質を添加してなる摺動材が、前記相反
する問題点を一挙に解消せしめることを知見する
にいたつた。この被シール液と疎性の関係にあ
り、かつ潤滑性のある物質としては、ジメチルシ
リコンオイル、メチルフエニルシリコンオイル、
メチルハイドロジエンポリシロキサンおよび疎水
性と潤滑性を有するシリコン化合物が挙げられる
が、摺動材の成形過程に熱処理工程を有するた
め、該熱処理によつても疎水性および潤滑性を失
なわないものを選択することが肝要である。また
これら物質の粘度は100CS以上のものが有効であ
るとともに、添加量については全材料中に占める
配合比率が0.5〜５重量％の範囲にあるものが有
効であることが判明した。
以下、本発明に係るメカニカルシール用摺動材
の一実施例を説明するに当たつて、便宜上、その
製造方法を述べる。
(1) コークス、黒鉛、カーボンブラツク等の炭素
質原料粉末に、フエノール系またはフラン系の
熱硬化性樹脂を結合として加え、該結合剤の融
点以上の温度で撹拌混合すると同時に、上記ジ
メチルシリコンオイル等を添加剤として少量添
加する。
(2) つぎに、この撹拌混合物を冷却後、粉末状に
粉砕する。
(3) つぎに、この粉砕物を加圧成形、射出成形ま
たは押し出し成形法によつて所定形状に成形
し、該成形物を150〜350℃で熱処理する。
上記工程から得られたメカニカルシール用摺動
材と従来例との性能比較試験を行なつたので、こ
れを以下に説明する。試験は、従来例１点(A)、本
発明に係る実施例４点（Ｂ〜Ｅ）の計５点を表１
の配合比率（重量％）で85℃、15分間撹拌混合
し、冷却後粉砕して、500Kg／cm2の圧力で成形し、
300℃で８時間熱処理して試作し、これらに対し
て表２に示す条件の下に行なつたものである。
The present invention relates to a sliding material for mechanical seals, and more specifically, a material having a phobic relationship with the liquid to be sealed and a lubricating property is added to the material of the sliding material to improve sealing performance. In addition, the present invention provides a sliding material for mechanical seals that prevents abnormal wear and has excellent long-term durability. Mechanical seals used in various shaft sealing technologies are designed to seal between the opposing sliding surfaces of one sliding member that follows the movement of a rotating member such as a shaft, and the other sliding member that is attached to a stationary member such as a housing. This structure prevents leakage of the liquid to be sealed. In such a mechanical seal, the smaller the gap between the sliding surfaces, the smaller the amount of leakage of the liquid to be sealed can be suppressed.
The smaller the gap, the more likely dry wear will occur, causing a seizure phenomenon and causing abnormal wear.
On the other hand, when the gap between the sliding surfaces is set relatively large, the liquid to be sealed easily enters the gap and a normal lubrication state can be maintained, but a certain amount of the liquid to be sealed always leaks. cannot be avoided. Mechanical seals must overcome the mutually contradictory problems of improving seal performance and preventing abnormal wear, but until now, fundamental solutions have not been available due to various structural or material reasons. Currently, only one problem has been dealt with intensively. The present invention has been made in view of the above points, and as a result of many years of research by the inventors of the present invention, a material that has a phobic relationship with the liquid to be sealed and has lubricating properties is added to the material. It has been discovered that a sliding material of this type solves the conflicting problems mentioned above all at once. Substances that have a phobic relationship with the liquid to be sealed and have lubricating properties include dimethyl silicone oil, methyl phenyl silicone oil,
Examples include methylhydrodiene polysiloxane and silicone compounds that have hydrophobicity and lubricity, but since the molding process of the sliding material includes a heat treatment process, it is necessary to use a material that does not lose its hydrophobicity and lubricity even through the heat treatment. It is important to be selective. It has also been found that these substances with a viscosity of 100 CS or more are effective, and with respect to the amount added, it is effective when the blending ratio in the total material is in the range of 0.5 to 5% by weight. Hereinafter, when describing one embodiment of the sliding material for mechanical seals according to the present invention, a manufacturing method thereof will be described for convenience. (1) A phenol-based or furan-based thermosetting resin is added as a binder to a carbonaceous raw material powder such as coke, graphite, or carbon black, and the dimethyl silicone oil is mixed at a temperature above the melting point of the binder. etc. are added in small amounts as additives. (2) Next, this stirred mixture is cooled and then ground into powder. (3) Next, this pulverized product is molded into a predetermined shape by pressure molding, injection molding, or extrusion molding, and the molded product is heat-treated at 150 to 350°C. A performance comparison test was conducted between the mechanical seal sliding material obtained from the above process and a conventional example, which will be described below. The test consisted of 1 conventional example (A) and 4 examples (B to E) according to the present invention, a total of 5 points as shown in Table 1.
Stir and mix at 85℃ for 15 minutes at a blending ratio (wt%) of , crush after cooling, and mold at a pressure of 500Kg/ cm
Trial production was carried out by heat treatment at 300°C for 8 hours, and the tests were carried out under the conditions shown in Table 2.
【表】【table】
【表】【table】
【表】
この試験の結果は、図面のグラフに示すとう
り、本発明に係る摺動材が長時間にわたつて優れ
たシール特性を有することを表わしている。
以上説明したように、本発明は摺動材の材料中
に被シール液と疎性の関係にあり、かつ潤滑性の
ある物質を少量添加することを特徴とするもので
あり、摺動材の摺動面に該添加剤が含有されてそ
の特性を発揮するようになるため、摺動面間に被
シール液が侵入するのを阻止する一方で良好な潤
滑状態を維持することができ、水または各種水溶
液を被シール液とする場合に、シール性能の向上
および異常摩耗の防止という相反する問題を一挙
に解決するものである。[Table] As shown in the graph of the drawing, the results of this test indicate that the sliding material according to the present invention has excellent sealing properties over a long period of time. As explained above, the present invention is characterized by adding a small amount of a substance that has a phobic relationship with the liquid to be sealed and has lubricating properties to the material of the sliding material. Since the additive is contained in the sliding surfaces and exhibits its properties, it is possible to maintain a good lubrication state while preventing the liquid to be sealed from entering between the sliding surfaces. Alternatively, when various aqueous solutions are used as the liquid to be sealed, the contradictory problems of improving sealing performance and preventing abnormal wear are solved all at once.
図面は本発明品と従来例とのテスト時間中にお
ける漏洩量の推移を示すグラフ図である。
The drawing is a graph showing the change in leakage amount during the test period between the product of the present invention and the conventional example.
Claims (1)
質原料粉末を主剤として製せられる摺動材の材料
中に、ジメチルシリコンオイル、メチルフエニル
シリコンオイル、メチルハイドロジエンポリシロ
キサンまたは疎水性と潤滑性を有するシリコン化
合物を加えてなることを特徴とするメカニカルシ
ール用摺動材。 ２ 上記ジメチルシリコンオイル、メチルフエニ
ルシリコンオイル、メチルハイドロジエンポリシ
ロキサンまたは疎水性と潤滑性を有するシリコン
化合物の全材料中に占める配合比率が、0.5〜５
重量％であることを特徴とする特許請求の範囲第
１項記載のメカニカルシール用摺動材。 ３ 上記ジメチルシリコンオイル、メチルフエニ
ルシリコンオイル、メチルハイドロジエンポリシ
ロキサンまたは疎水性と潤滑性を有するシリコン
化合物の粘度が100CS以上であることを特徴とす
る特許請求の範囲第１項または第２項記載のメカ
ニカルシール用摺動材。[Claims] 1. Dimethyl silicone oil, methylphenyl silicone oil, methylhydrodiene polysiloxane or hydrophobic A sliding material for mechanical seals that is made by adding a silicone compound that has properties of elasticity and lubricity. 2 The proportion of the dimethyl silicone oil, methylphenyl silicone oil, methylhydrodiene polysiloxane, or silicone compound having hydrophobicity and lubricity in the total material is 0.5 to 5.
% by weight of the sliding material for mechanical seals according to claim 1. 3. Claims 1 or 2, characterized in that the dimethyl silicone oil, methylphenyl silicone oil, methylhydrodiene polysiloxane, or silicone compound having hydrophobicity and lubricity has a viscosity of 100 CS or more. Sliding material for mechanical seals listed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20765582A JPS5997367A (en) | 1982-11-29 | 1982-11-29 | Sliding member for mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20765582A JPS5997367A (en) | 1982-11-29 | 1982-11-29 | Sliding member for mechanical seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5997367A JPS5997367A (en) | 1984-06-05 |
| JPS6324638B2 true JPS6324638B2 (en) | 1988-05-21 |
Family
ID=16543367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20765582A Granted JPS5997367A (en) | 1982-11-29 | 1982-11-29 | Sliding member for mechanical seal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5997367A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6267912B2 (en) | 2013-10-02 | 2018-01-24 | 東洋炭素株式会社 | Metal-carbon brush and method for producing the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54153813A (en) * | 1978-05-23 | 1979-12-04 | Nippon Kokuen Kogyo Kk | Particle or pellet type heattresistant* nonnshaped packing material |
| JPS5734135A (en) * | 1980-08-04 | 1982-02-24 | Gore & Ass | Dirt-free graphite coating composition, coating method and coated high polymer substrate |
-
1982
- 1982-11-29 JP JP20765582A patent/JPS5997367A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54153813A (en) * | 1978-05-23 | 1979-12-04 | Nippon Kokuen Kogyo Kk | Particle or pellet type heattresistant* nonnshaped packing material |
| JPS5734135A (en) * | 1980-08-04 | 1982-02-24 | Gore & Ass | Dirt-free graphite coating composition, coating method and coated high polymer substrate |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5997367A (en) | 1984-06-05 |
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