JPH07188500A - Lubricating rubber composition - Google Patents

Lubricating rubber composition

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Publication number
JPH07188500A
JPH07188500A JP33015093A JP33015093A JPH07188500A JP H07188500 A JPH07188500 A JP H07188500A JP 33015093 A JP33015093 A JP 33015093A JP 33015093 A JP33015093 A JP 33015093A JP H07188500 A JPH07188500 A JP H07188500A
Authority
JP
Japan
Prior art keywords
weight
parts
carbon material
graphite
tetrafluoroethylene resin
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.)
Granted
Application number
JP33015093A
Other languages
Japanese (ja)
Other versions
JP3202853B2 (en
Inventor
Yoshiro Oki
芳郎 沖
Ichiro Minamoto
一郎 皆元
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Priority to JP33015093A priority Critical patent/JP3202853B2/en
Publication of JPH07188500A publication Critical patent/JPH07188500A/en
Application granted granted Critical
Publication of JP3202853B2 publication Critical patent/JP3202853B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE:To obtain a long-life composition excellent in static and dynamic frictional properties and abrasion resistance by mixing a fluororubber with a specified tetrafluoroethylene resin powder and spherical graphite. CONSTITUTION:This composition is obtained by mixing a fluororubber with a tetrafluoroethylene resin powder with its surface pierced by a carbon material and spherical graphite. 'The tetrafluoroethylene with its surface pierced by a carbon material' means one obtained for example by coprecipitation with a carbon material at the end of the emulsion polymerization, and coagulating, washing and drying the coprecipitate. It may be one obtained by dry-blending a tetrafluoroethylene resin powder with a carbon material. The carbon materials include usual carbon powders and graphite powders, and graphite is particularly desirable. The spherical graphite is one produced as a by-product in spinning of pitch or one prepared by reacting a phenolic resin with paraformaldehyde in the presence of a catalyst to form a spherical polymer, and firing and grinding this polymer.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は潤滑性ゴム組成物に関
するものである。
FIELD OF THE INVENTION The present invention relates to a lubricating rubber composition.

【0002】[0002]

【従来の技術】フッ素ゴム(以下、FPMと記す)は、
耐熱性、耐候性、耐油性、耐薬品性および耐オゾン性に
優れる特殊ゴムであり、通常、上記特性が生かされる過
酷な用途に用いられている。しかし、そのほとんどは、
一般工業用、軍事用、宇宙用、民生用および医療用等の
分野においてシール用途および振動吸収用途に用いられ
ている。摺動を兼用しているものも少なくなく、ほとん
どがグリースあるいはオイルとの併用に用いられてい
る。
2. Description of the Related Art Fluorine rubber (hereinafter referred to as FPM) is
It is a special rubber that is excellent in heat resistance, weather resistance, oil resistance, chemical resistance and ozone resistance, and is usually used in harsh applications where the above characteristics are utilized. But most of them
It is used for sealing and vibration absorption in the fields of general industrial use, military use, space use, civilian use, medical use and the like. Many of them also use sliding, and most of them are used in combination with grease or oil.

【0003】たとえば、シール部品においては、雰囲気
等の使用条件のみを考慮して、フッ素ゴムの種類の選
択、あるいは充填剤比率による硬度の選択をする程度で
材料が選定されてきたため、シール兼摺動部に発生する
せん断力により発熱がおこり、オイル・グリースが排出
され、スティックスリップが発生して正常な作動が安定
してされなかったり、異音が発生して問題となってい
る。さらに最悪な結果として、摩耗が進行し、破れ・破
損等が発生し、短期間での交換を行なわざるを得ないも
のがあった。
For example, in the case of the seal component, the material has been selected to the extent that the type of fluororubber is selected or the hardness is selected according to the filler ratio in consideration of only the usage conditions such as the atmosphere. Due to the shearing force generated in the moving part, heat is generated, oil and grease are discharged, stick slip occurs, and normal operation is not stabilized, or abnormal noise occurs, which is a problem. Further, as the worst result, there was a case in which wear progressed, breakage, breakage, etc. occurred, and replacement was required in a short period of time.

【0004】例示すると自動車・二輪車のオイル周辺一
般オイルシール、ガソリン供給系オイルシート、給排気
系シール、エアコン系冷媒用シール、ワイパーブレー
ド、グラスラン、事務機器の電子式複写機のトナー周辺
のシール、定着部トナーブレード、カップジュース自動
販売機の切り替えバルブ用シール、家庭用浄水器・混合
栓用シール、一般製造ラインの切り替えバルブ用シー
ル、パン・餅等混練機用シール、上水・下水用バタフラ
イバルブ用シール、医療用注射器ピストンシール等、数
え切れない。
For example, general oil seals around oil in automobiles and motorcycles, oil sheets for gasoline supply system, seals for air supply / exhaust systems, seals for air conditioner refrigerants, wiper blades, glass run, seals around toner in electronic copying machines for office equipment, Toner blade for fixing unit, seal for switching valve of cup juice vending machine, seal for household water purifier / mixing stopper, seal for switching valve of general production line, seal for bread / mochi kneading machine, butterfly for tap water / sewage There are countless seals for valves, medical syringe piston seals, etc.

【0005】これまで、ゴム材料全般のすべり特性改良
として、ジエン系合成ゴム等、シール部のシール兼摺動
部表面にテフロンシートを張りつけたものが採用されて
いる(特公昭46−23681号公報記載)。しかし、
長期にわたり高圧力にさらされるため、接着部の剥離が
問題となっている。また、摺動面が弾性体でないため、
シール性で十分満足されていない。当然、フッ素ゴム表
面への接着は、さらに不安が大きいものであるために実
用化されていない。
To improve the sliding properties of rubber materials in general, a diene-based synthetic rubber having a Teflon sheet attached to the surface of the seal / sliding part of the seal has been used (Japanese Patent Publication No. 46-23681). Description). But,
Since it is exposed to high pressure for a long period of time, peeling of the adhesive portion is a problem. Also, since the sliding surface is not an elastic body,
Sealing property is not sufficiently satisfied. Naturally, the adhesion to the surface of the fluororubber has not been put to practical use because it is more uneasy.

【0006】シール性および低摩擦持性の付与として、
ジエン系ゴム基材にオイルを含浸させたタイプも検討さ
れたが、経時的にオイルが排出され、しだいに摺動抵抗
が大きくなり、スティックスリップ等の発生および破損
発生等の不具合があった。シール部表面へのテフロンコ
ーティングも試みられたが、コーティング膜焼成条件に
対するゴム基材の耐熱性の問題もあり、使用可能な類で
は耐摩耗性が十分ではなかった。また、皮膜の下地への
追従性が十分でなく、部品取り付け時の伸びや運動にて
皮膜剥離がおこる。さらに、ワイパーブレード等にて実
施されている塩素系溶剤による薬液処理あるいはプラズ
マ処理等も考案されたが、いずれも十分ではなかった。
[0006] To give a sealing property and a low friction holding property,
A type in which a diene rubber base material was impregnated with oil was also examined, but the oil was discharged over time, and the sliding resistance gradually increased, causing problems such as stick-slip and damage. Teflon coating on the surface of the seal portion was also tried, but there was a problem of heat resistance of the rubber base material against the firing conditions of the coating film, and the wear resistance was not sufficient in the usable class. In addition, the film does not have sufficient followability to the substrate, and the film peels off due to stretching and movement during component mounting. Further, a chemical solution treatment or a plasma treatment with a chlorine-based solvent, which is carried out with a wiper blade or the like, has been devised, but none of them has been sufficient.

【0007】特公昭57−32950号公報記載の発明
にあるようなオレフィン系ポリマーのシール部への融着
も検討されたが、シール性が失われて使用できなかっ
た。一般的に有名な、ジエン系ゴムにテフロン系、シリ
コーン系等の固体潤滑剤を添加し、低摩擦持性を付与さ
せたものが多数考案され、特許出願あるいは学会報告さ
れているが、いずれも若干の低摩擦化は達成されたが、
添加により高硬度となったり、シール性が不十分になっ
たりして、使用に耐え得るものではなかった。また、ゴ
ム基材とのぬれ性が悪いため、引っ張り強度、引き裂き
強度が極端に低下し、耐摩耗性が従来品より劣っていた
等の問題があり、実際に採用されなかった。シリコーン
ゴム、フッ素ゴムも対象にはなったが、特に有意性は認
められなかった。
Fusion of an olefinic polymer to the seal portion as in the invention described in Japanese Patent Publication No. 57-32950 was also investigated, but the sealing property was lost and it could not be used. Many commonly known solid lubricants such as Teflon and silicone are added to diene rubber to give low friction durability, and many have been devised, and patent applications or academic conference reports have been provided. Although some low friction was achieved,
The addition of these materials resulted in high hardness and insufficient sealing properties, and they were not usable. Further, since the wettability with the rubber substrate is poor, the tensile strength and the tear strength are extremely lowered, and the abrasion resistance is inferior to that of the conventional product. Silicone rubber and fluororubber were also targeted, but no significant significance was observed.

【0008】[0008]

【発明が解決しようとする課題】したがって、いずれの
用途においても、静・動摩擦持性に優れ、耐摩耗特性に
も優れ、長寿命で信頼して使用できる潤滑性ゴム材料が
要求され、この発明の課題は、この要求に応え得る潤滑
性ゴム組成物を提供することである。
Therefore, in any of the applications, there is a demand for a lubricating rubber material which is excellent in static and dynamic friction durability, is excellent in wear resistance, and has a long life and can be used reliably. The problem is to provide a lubricating rubber composition that can meet this demand.

【0009】[0009]

【課題を解決するための手段】上記の課題を解決するた
めに、この発明は、FPMと、表面にカーボン材が突き
刺さったテトラフルオロエチレン樹脂粉末と、球状黒鉛
とを配合する構成を採用したものである。以下、その詳
細を述べる。
In order to solve the above-mentioned problems, the present invention adopts a constitution in which FPM, tetrafluoroethylene resin powder having a carbon material stuck on the surface thereof, and spherical graphite are blended. Is. The details will be described below.

【0010】まず、この発明におけるFPMとは、各種
有機合成法にて合成され、室温においてゴム状弾性を有
するものであれば広範囲のものを例示できる。このFP
Mの分子量は、通常5万以上のものが望ましく、可及的
に高分子量のものが良好な結果を得ることから、より望
ましくは7万以上、特に望ましくは10〜50万程度の
ものを用いる。以上の条件に該当する代表例としては、 旭硝子社製 4フッ化エチレン・フ゜ロヒ゜レン共重合体
アフラス 昭和電工社製 フッ化ヒ゛ニリテ゛ン・6フッ化フ゜ロヒ゜レン 共重合体
バイトンモンテフルオス 社製 フッ化ヒ゛ニリテ゛ン・6フッ化フ゜ロヒ゜レン 共重合体
テクノフロン 東芝シリコーン 社製 フッ化シリコーンコ゛ム 住友スリーエム 社製 フッ化ヒ゛ニリテ゛ン・6フッ化フ゜ロヒ゜レン 共重合体
フローレル が例示できる。
First, the FPM in the present invention can be exemplified in a wide range as long as it is synthesized by various organic synthesis methods and has rubber-like elasticity at room temperature. This FP
The molecular weight of M is usually preferably 50,000 or more, and a high molecular weight is preferable to obtain a good result. Therefore, a molecular weight of M is more preferably 70,000 or more, particularly preferably 100,000 to 500,000. . As a typical example corresponding to the above conditions, a tetrafluoroethylene / polypropylene copolymer manufactured by Asahi Glass Co., Ltd.
Aflas Showa Denko Co., Ltd. Vinylidene-6-Fluorofluorene Copolymer Viton Montefluos Co. Vinylidin-6-Fluorofluorene Copolymer Technoflon Toshiba Silicone Fluorosilicone Sumitomo 3M Hydrofinyl An example is hexafluorofluorene copolymer copolymer Florel.

【0011】表面にカーボン材が突き刺さったテトラフ
ルオロエチレン樹脂とは、例えば、乳化重合終了時にカ
ーボン材と共沈させて凝析・洗浄・乾燥後、表面にカー
ボン材が突き刺さったテトラフルオロエチレン樹脂であ
る。
The tetrafluoroethylene resin having the carbon material stuck to the surface is, for example, a tetrafluoroethylene resin having the carbon material stuck to the surface after coprecipitation with the carbon material at the end of emulsion polymerization, coagulation, washing and drying. is there.

【0012】テトラフルオロエチレン樹脂粉末にカーボ
ン材を乾式混合にて混合し、表面にカーボン材が突き刺
さったものでもよい。なお、このカーボン材とは、一般
的な炭素粉から黒鉛までの粉末状のものであり、特に黒
鉛が好ましく、一般にゴム基材として用いられるストラ
クチュアの大きいHAFカーボン、SAFカーボン、M
Tカーボン等と併用しても構わない。
A carbon material may be mixed with the tetrafluoroethylene resin powder by dry mixing and the surface may be pierced with the carbon material. It should be noted that the carbon material is powdered from general carbon powder to graphite, and particularly graphite is preferable, and HAF carbon, SAF carbon, M having a large structure which is generally used as a rubber base material.
You may use together with T carbon etc.

【0013】図1にあるように、テトラフルオロエチレ
ン樹脂(図中、PTFEと表示する)1に黒鉛2が全方
向に突き刺さっていることから、ゴム基材3内での物理
的な杭効果を生じ、ゴム基材と黒鉛の親和性にて単純に
ゴム基材、テトラフルオロエチレン樹脂を混練したもの
より高強度のものが得られると考える。
As shown in FIG. 1, since graphite 2 is pierced in all directions in tetrafluoroethylene resin (indicated as PTFE in the figure) 1, a physical pile effect in rubber base material 3 is obtained. It is considered that, due to the affinity of the rubber base material and graphite, a material having a higher strength than that obtained by simply kneading the rubber base material and the tetrafluoroethylene resin can be obtained.

【0014】また、この発明における球状黒鉛とは、ピ
ッチから紡糸する工程にて副生される球状黒鉛、あるい
はフェノール樹脂を触媒下にてパラフォルムと反応させ
て球状に重合後、焼成、粉砕した球状黒鉛が挙げられ
る。市販されているものを以下に例示する。 大阪ガスケミカル社製 メソカーボンビーズ 鐘紡社製 ベルパール ユニチカ社製 ユニベックス 日本カーボン社製 マイクロカーボンビーズ。
The spheroidal graphite in the present invention means spheroidal graphite produced as a by-product in the process of spinning from pitch, or phenolic resin is reacted with paraform under a catalyst to polymerize into spheres, which is then calcined and pulverized. Spherical graphite may be used. The commercially available products are exemplified below. Osaka Gas Chemical's Mesocarbon beads Kanebo's Bell Pearl Unitika's Univex Nippon Carbon's micro carbon beads.

【0015】この発明におけるFPMとテトラフルオロ
エチレン樹脂の重量比は、FPM100重量部に対して
10重量部以上140重量部未満になることが好まし
い。テトラフルオロエチレン樹脂が10重量部未満であ
った場合、FPMに十分な摩擦特性を付与できない。逆
に、140重量部を超えるとゴム硬度が高くなり、ゴム
特性がなくなるほか、機械的強度が極端に低下し、実際
の使用に耐えられない。
In the present invention, the weight ratio of FPM to tetrafluoroethylene resin is preferably 10 parts by weight or more and less than 140 parts by weight with respect to 100 parts by weight of FPM. If the amount of the tetrafluoroethylene resin is less than 10 parts by weight, the FPM cannot be provided with sufficient friction characteristics. On the contrary, when it exceeds 140 parts by weight, the rubber hardness becomes high, the rubber characteristic is lost, and the mechanical strength is extremely lowered, so that it cannot be used in actual use.

【0016】この発明におけるFPM100重量部に対
する球状黒鉛の充填重量比は、5重量部以上80重量部
未満になることが好ましい。球状黒鉛が5重量部未満で
あった場合、FPMに十分な耐摩耗特性を付与できな
い。逆に、80重量部を超えるとゴム硬度が高くなりゴ
ム特性はなくなるほか、機械的強度が極端に低下し、実
際の使用に耐えられない。
In the present invention, the filling weight ratio of spherical graphite to 100 parts by weight of FPM is preferably 5 parts by weight or more and less than 80 parts by weight. If the amount of spheroidal graphite is less than 5 parts by weight, sufficient wear resistance cannot be imparted to FPM. On the other hand, if the amount exceeds 80 parts by weight, the rubber hardness becomes high, the rubber properties are lost, and the mechanical strength extremely decreases, so that it cannot be used in actual use.

【0017】なお、この発明の目的を損なわない範囲
で、以下に列記するような公知の添加剤を配合しても構
わない。
It should be noted that known additives as listed below may be blended within a range not impairing the object of the present invention.

【0018】(1) 補強剤 例えば、カーボンブラック、
シリカ、クレー、炭酸カルシウム、水酸化マグネシウ
ム、水酸化アルミニウム、酸化アルミニウム、タルク、
マイカ、カオリン、ベントナイト、シラス、ウォラスト
ナイト、炭化ケイ素、ガラス粉末、カーボン粉末、ボロ
ン繊維、アラミド繊維等 (2) 加硫助剤 例えば、ポリオール、過酸化物、ポリア
ミン等 (3) 加硫促進剤 例えば、グアニジン類、イオウ類、ア
ルデヒドーアミン類、亜鉛塩類等 (4) 加硫活性剤 例えば、酸化マグネシウム、水酸化カ
ルシウム、酸化鉛等 (5) 可塑剤 例えば、フッ化オイル等 (6) 老化防止剤 例えば、アミン類、フェノール類等 (7) 相溶化剤 (8) 着色剤 以上の各種原材料を混練する方法は特に限定するもので
はなく、通常広く用いられている方法、例えば、主原料
となるFPM、その他充填剤を個別に順次あるいは同時
にロール混合機、プロペラ混合機、ニーダ混合機、二軸
溶融混合機、その他混合機にて混合すれば良い。また、
このとき摩擦による発熱を防止する意味で温調器を設置
することが望ましい。また、ロール混合機を使用する場
合、仕上げ混合として、薄通しすることが好ましい。
(1) Reinforcing agent For example, carbon black,
Silica, clay, calcium carbonate, magnesium hydroxide, aluminum hydroxide, aluminum oxide, talc,
Mica, kaolin, bentonite, shirasu, wollastonite, silicon carbide, glass powder, carbon powder, boron fiber, aramid fiber, etc. (2) Vulcanization aids, for example, polyols, peroxides, polyamines, etc. (3) Vulcanization acceleration Agents, for example, guanidines, sulfur, aldehyde-amines, zinc salts, etc. (4) Vulcanization activators, for example, magnesium oxide, calcium hydroxide, lead oxide, etc. (5) Plasticizers, for example, fluorinated oils, etc. (6) Anti-aging agent For example, amines, phenols, etc. (7) Compatibilizer (8) Colorant The method of kneading the above various raw materials is not particularly limited, and a method that is generally widely used, for example, a main raw material The FPM and other fillers may be mixed individually or sequentially or simultaneously with a roll mixer, a propeller mixer, a kneader mixer, a twin-screw melt mixer, and other mixers. Also,
At this time, it is desirable to install a temperature controller to prevent heat generation due to friction. Further, when a roll mixer is used, it is preferable to carry out thin-threading as finishing mixing.

【0019】[0019]

【作用】この発明における潤滑性ゴム組成物は、ゴム基
材を構成するフッ素ゴムに、表面にカーボン材が突き刺
さったテトラフルオロエチレン樹脂粉末を配合したこと
から、カーボン材が杭となってゴム基材とテトラフルオ
ロエチレン樹脂との混和状態が保持される。
In the lubricating rubber composition of the present invention, the fluorocarbon rubber constituting the rubber base material is mixed with the tetrafluoroethylene resin powder having the carbon material pierced on the surface thereof. The mixed state of the material and the tetrafluoroethylene resin is maintained.

【0020】また、球状黒鉛も併せて配合されているこ
とから、ゴム基材との親和性を発揮して、テトラフルオ
ロエチレン樹脂との混練をより強固なものとする。
Further, since spherical graphite is also compounded, the affinity with the rubber base material is exerted, and the kneading with the tetrafluoroethylene resin is made stronger.

【0021】[0021]

【実施例】以下、この発明を実施例により更に詳細に説
明する。
EXAMPLES The present invention will now be described in more detail by way of examples.

【0022】まず、実施例および比較例に用いたFPM
基本組成を以下に示す。
First, the FPM used in Examples and Comparative Examples
The basic composition is shown below.

【0023】なお、各成分の配合割合はすべて重量%で
あるが、ゴム基材100重量部に対しての充填比率であ
る。
The mixing ratios of the respective components are all% by weight, but the filling ratio is based on 100 parts by weight of the rubber base material.

【0024】 (1)基礎配合A=フッ化ビニリデン・6フッ化プロピレン共重合体 FPM モンテカチーニ 社製 テクノフロン F5350 100 重量部 ステアリン 酸 一般工業材 2重量部 カーボン MT 5重量部 酸化マグネシウム 一般工業材 3重量部 水酸化カルシウム 一般工業材 6重量部 (2)基礎配合B=フッ化ビニリデン・6フッ化プロピレン共重合体 FPM 昭和電工社製 バイトンA 100 重量部 ステアリン 酸 一般工業材 2重量部 カーボン MT 5重量部 酸化マグネシウム 一般工業材 15重量部 Diak No.3 一般工業材 3重量部 (3)基礎配合C=4フッ化エチレン・プロピレン共重合体 FPM 旭硝子社製 アフラス150 100 重量部 ステアリン 酸 一般工業材 2重量部 カーボン MT 5重量部 有機過酸化物 一般工業材 1重量部 TAIC 一般工業材 5重量部 潤滑剤 (1)黒鉛共沈PTFE PTFE/GRP-1 乳化重合にて重合完了後に平均粒径6μmの黒鉛と共沈
させ、凝析、洗浄して得られたものである。 (2)黒鉛とのト゛ライフ゛レント゛ PTFE PTFE/GRP-2 乳化重合にて重合完了後、凝析、洗浄して得られたファ
インパウダーを平均粒径6μmの黒鉛とヘンシェルミキ
サーにてドライブレンドしたものである。 (3)PTFE 旭硝子社製PTFE ルーブリカントL169 (4)ETFE 旭硝子社製 アフロンCOP Z8820 (5)球状黒鉛A 鐘紡社製 ベルパールC2000 (6)球状黒鉛B 大阪ガス社製 メソカーボンビーズMP280
0。
(1) Basic compounding A = vinylidene fluoride / hexafluoropropylene copolymer FPM Technoflon F5350 manufactured by Montecatini Co. 100 parts by weight Stearic acid general industrial material 2 parts by weight Carbon MT 5 parts by weight Magnesium oxide general industrial material 3 Parts by weight Calcium hydroxide General industrial material 6 parts by weight (2) Basic compounding B = vinylidene fluoride / hexafluoropropylene copolymer FPM Showa Denko Viton A 100 parts by weight Stearic acid General industrial material 2 parts by weight Carbon MT 5 Parts by weight Magnesium oxide General industrial materials 15 parts by weight Diak No.3 General industrial materials 3 parts by weight (3) Basic compounding C = 4 Fluorinated ethylene / propylene copolymer FPM Asahi Glass Co., Ltd. Aflas 150 100 parts by weight Stearic acid general industrial materials 2 parts by weight Carbon MT 5 parts by weight Organic peroxide General industrial materials 1 part by weight TAIC General industrial materials 5 Parts by weight Lubricant (1) Graphite coprecipitated PTFE PTFE / GRP-1 This is obtained by coprecipitation with graphite having an average particle size of 6 μm after completion of polymerization by emulsion polymerization, coagulation and washing. (2) Dry powder with graphite PTFE PTFE / GRP-2 Fine powder obtained by coagulation and washing after completion of polymerization by emulsion polymerization was dry blended with graphite with an average particle size of 6 μm in a Henschel mixer. is there. (3) PTFE Asahi Glass Co., Ltd. PTFE Lubricant L169 (4) ETFE Asahi Glass Co., Ltd. Aflon COP Z8820 (5) Spherical graphite A Kanebo bellbell C2000 (6) Spherical graphite B Osaka Gas Co. mesocarbon beads MP280
0.

【0025】〔実施例1〜7〕まず、ロール間隔5〜1
0mm程度に調整したロール混合機に、FPM(テクノフ
ロン)を巻き付け、基礎配合Aに示した割合で無機充填
剤、カーボン、加硫剤を順次混合し、最後に表1で示す
割合にてPTFE及びその他充填剤を混練した。
[Examples 1 to 7] First, roll intervals of 5 to 1
Wrap FPM (Technoflon) around a roll mixer adjusted to about 0 mm, mix inorganic filler, carbon, and vulcanizing agent in the proportions shown in the basic formulation A in order, and finally add PTFE in the proportions shown in Table 1. And other fillers were kneaded.

【0026】その後、ロール間隔を1mmに調整し、薄通
しを10回行なった。なお、このときの摩擦熱を防止す
る目的で、常時、ロール内に冷却水を通し、ロール温度
を60度以下に保った。
After that, the roll interval was adjusted to 1 mm and thin threading was performed 10 times. For the purpose of preventing frictional heat at this time, cooling water was constantly passed through the roll to keep the roll temperature at 60 degrees or less.

【0027】次に冷却水を止めてロール内にスチームを
通し、ゴム温度が70度以上90度以内になるように調
整し、その後、ロール間隔を1mmに狭めて薄通しを10
回行ない、それぞれ10kgのコンパウンドを得た。
Next, the cooling water was stopped and steam was passed through the rolls to adjust the rubber temperature so that the rubber temperature was 70 degrees or more and 90 degrees or less.
The process was repeated and 10 kg of compounds were obtained.

【0028】各コンパウンドに対して、縦300mm、横
300mm、厚さ1mmの金型を用い、プレス成形にて、1
次加硫(170℃、10分間、プレス圧35kg/cm2
および2次加硫(フリー加熱、230℃、16時間)を
行ない、加硫が終わった各シートについて、摩擦・摩耗
特性、弾性体特性を求めた。
For each compound, a die having a length of 300 mm, a width of 300 mm, and a thickness of 1 mm is used, and press molding is performed to obtain 1
Next vulcanization (170 ° C, 10 minutes, press pressure 35kg / cm 2 )
Then, secondary vulcanization (free heating, 230 ° C., 16 hours) was performed, and the friction / wear characteristics and elastic body characteristics of the respective vulcanized sheets were determined.

【0029】各試験方法は以下のとおりである。Each test method is as follows.

【0030】(1)摩擦、摩耗特性試験 得られたシートをφ17×φ21(mm)のリング打ち抜
き、φ17×φ21×10(mm)のアルミ合金製リング
に接着し、摩擦試験片とした。相手材は軸受鋼(SUJ
2)研磨品とし、スラスト型摩擦摩耗試験にて評価し
た。試験条件は周速1.0m/min、面圧3.0kgf
/cm2 、時間100hである。得られた結果を表2に示
す。
(1) Friction and abrasion property test The obtained sheet was punched out with a φ17 × φ21 (mm) ring and bonded to a φ17 × φ21 × 10 (mm) aluminum alloy ring to give a friction test piece. Mating material is bearing steel (SUJ
2) A polished product was evaluated by a thrust type friction wear test. Test conditions are peripheral speed 1.0m / min, surface pressure 3.0kgf
/ Cm 2 and time 100 h. The obtained results are shown in Table 2.

【0031】(2)非粘着特性試験 得られた試験片において、水に対する接触角をゴニオメ
ータ式接触角度測定器で測定し、接触角度の大きいもの
ほど非粘着性は良いと判断した。得られた結果を表2に
示す。
(2) Non-adhesive property test The contact angle of water in the obtained test piece was measured by a goniometer type contact angle measuring device, and it was judged that the larger the contact angle, the better the non-adhesiveness. The obtained results are shown in Table 2.

【0032】(3)弾性体特性試験 得られた試験片に対してJIS−K6301に準拠し、
引き張り強度・伸び・硬度(JIS−A)を調査した。
得られた結果を表2に示す。
(3) Elastic body property test The obtained test piece is compliant with JIS-K6301,
The tensile strength, elongation and hardness (JIS-A) were investigated.
The obtained results are shown in Table 2.

【0033】〔実施例8〕実施例8では、FPMをバイ
トンにし、表1に示す割合にて実施例1〜7とまったく
同様な方法を用いて、混合、シート成形、加硫を行なっ
た。また、試験片の調整および試験方法も実施例1〜7
とまったく同様な方法を用いた。得られた結果を表2に
示す。
Example 8 In Example 8, FPM was changed to Viton, and mixing, sheet molding, and vulcanization were performed in the proportions shown in Table 1 by the same method as in Examples 1 to 7. In addition, the test piece adjustment and test methods are also described in Examples 1 to 7.
The exact same method was used. The obtained results are shown in Table 2.

【0034】〔実施例9〕実施例9では、FPMをアフ
ラスにし、表1に示す割合にて実施例1〜7とまったく
同様な方法を用いて、混合、シート成形、加硫を行なっ
た。また、試験片の調整および試験方法も実施例1〜7
とまったく同様な方法を用いた。得られた結果を表2に
示す。
[Example 9] In Example 9, FPM was used as aflas, and mixing, sheet forming, and vulcanization were performed in the proportions shown in Table 1 by the same method as in Examples 1 to 7. In addition, the test piece adjustment and test methods are also described in Examples 1 to 7.
The exact same method was used. The obtained results are shown in Table 2.

【0035】[0035]

【表1】 [Table 1]

【0036】[0036]

【表2】 [Table 2]

【0037】〔比較例1〜6〕比較例1〜6では、表1
に示す割合にて実施例とまったく同様な方法を用いて、
混合、シート成形、加硫を行なった。また、試験片の調
整および試験方法も実施例とまったく同様な方法を用い
た。得られた結果を表2に示す。
Comparative Examples 1 to 6 In Comparative Examples 1 to 6, Table 1
Using a method exactly the same as in the example at the ratio shown in
Mixing, sheet molding, and vulcanization were performed. The test pieces were prepared and tested in the same manner as in the examples. The obtained results are shown in Table 2.

【0038】表2より明らかなように、FPMにPTF
Eを添加した比較例2、3は、いずれも摩擦係数がゴム
基材に比較して低くなっているが、機械的強度(特に引
張強度)の低下が大きく、耐摩耗性も十分でない。共沈
PTFE、球状黒鉛を単独使用した比較例5、6は、摩
擦係数は低いものの摩耗特性が十分に改善されていな
い。
As is clear from Table 2, PPM is added to FPM.
In each of Comparative Examples 2 and 3 in which E was added, the friction coefficient was lower than that of the rubber base material, but the mechanical strength (particularly tensile strength) was significantly reduced and the wear resistance was also insufficient. Comparative Examples 5 and 6 in which coprecipitated PTFE and spheroidal graphite were used alone had a low friction coefficient, but the wear characteristics were not sufficiently improved.

【0039】しかし、表面にカーボン材が突き刺さった
PTFEおよび球状黒鉛を添加した実施例では、機械的
強度の低下が少なく、低摩擦係数の維持および耐摩耗性
の向上が確認できた。また、FPM材料としてのゴム物
性も十分なものであった。
However, in the examples in which the PTFE having the carbon material pierced on the surface and the spheroidal graphite were added, it was confirmed that the mechanical strength was not significantly decreased, the low friction coefficient was maintained, and the wear resistance was improved. Further, the physical properties of rubber as an FPM material were also sufficient.

【0040】[0040]

【発明の効果】以上述べたように、この発明に係る潤滑
性ゴム組成物は、FPM材料として十分なゴム特性を有
しながら、低摩擦係数、耐摩擦特性に優れているもので
ある。したがって、シール部品等にて、グリースレス等
を可能にし、長期にわたり安定性・信頼性に優れたもの
として使用することができる。
As described above, the lubricating rubber composition according to the present invention has sufficient rubber properties as an FPM material, but is also excellent in low friction coefficient and abrasion resistance. Therefore, the seal parts and the like can be used without grease and have excellent stability and reliability for a long period of time.

【0041】従って、この発明の意義はきわめて大きい
と言える。
Therefore, it can be said that the significance of the present invention is extremely great.

【図面の簡単な説明】[Brief description of drawings]

【図1】実施例の模式図FIG. 1 is a schematic diagram of an example.

【符号の説明】[Explanation of symbols]

1 PTFE 2 黒鉛 3 ゴム基材 1 PTFE 2 Graphite 3 Rubber base material

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 第1必須成分をフッ素ゴムとし、 第2必須成分を表面にカーボン材が突き刺さったテトラ
フルオロエチレン樹脂粉末とし、 第3必須成分を球状黒鉛とした潤滑性ゴム性組成物。
1. A lubricating rubber composition in which the first essential component is fluororubber, the second essential component is tetrafluoroethylene resin powder having a carbon material stuck on the surface thereof, and the third essential component is spherical graphite.
【請求項2】 第2必須成分が、乳化重合終了後にカー
ボン材と共沈させることにより、その表面にカーボン材
が突き刺さったテトラフルオロエチレン樹脂粉末である
請求項1記載の潤滑性ゴム組成物。
2. The lubricative rubber composition according to claim 1, wherein the second essential component is a tetrafluoroethylene resin powder having a carbon material pierced on its surface by coprecipitation with the carbon material after the completion of emulsion polymerization.
【請求項3】 第2必須成分が、テトラフルオロエチレ
ン樹脂粉末とカーボン材とを乾式混合にて混合すること
により、その表面にカーボン材が突き刺さったテトラフ
ルオロエチレン樹脂粉末である請求項1記載の潤滑性ゴ
ム組成物。
3. The second essential component is a tetrafluoroethylene resin powder in which the carbon material is pierced on the surface by dry-mixing the tetrafluoroethylene resin powder and the carbon material. Lubricating rubber composition.
【請求項4】 第2必須成分の配合割合が第1必須成分
100重量部に対して10重量部以上140重量部未満
の範囲であり、かつ、第1必須成分100重量部に対し
て第3必須成分が5重量部以上80重量部未満である請
求項1記載の潤滑性ゴム組成物。
4. The mixing ratio of the second essential component is in the range of 10 parts by weight or more and less than 140 parts by weight with respect to 100 parts by weight of the first essential component, and the third ratio is 100 parts by weight of the first essential component. The lubricating rubber composition according to claim 1, wherein the essential component is 5 parts by weight or more and less than 80 parts by weight.
JP33015093A 1993-12-27 1993-12-27 Lubricating rubber composition Expired - Lifetime JP3202853B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33015093A JP3202853B2 (en) 1993-12-27 1993-12-27 Lubricating rubber composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33015093A JP3202853B2 (en) 1993-12-27 1993-12-27 Lubricating rubber composition

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP19175698A Division JPH1180480A (en) 1998-07-07 1998-07-07 Lubricating rubber composition

Publications (2)

Publication Number Publication Date
JPH07188500A true JPH07188500A (en) 1995-07-25
JP3202853B2 JP3202853B2 (en) 2001-08-27

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ID=18229378

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
JP (1) JP3202853B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6016254B1 (en) * 2015-12-14 2016-10-26 衣枝 古内 Ring file sheet
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