JPH0948879A - Lubricating rubber composition - Google Patents
Lubricating rubber compositionInfo
- Publication number
- JPH0948879A JPH0948879A JP21819795A JP21819795A JPH0948879A JP H0948879 A JPH0948879 A JP H0948879A JP 21819795 A JP21819795 A JP 21819795A JP 21819795 A JP21819795 A JP 21819795A JP H0948879 A JPH0948879 A JP H0948879A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- polybutadiene
- rubber composition
- silicone oil
- pts
- 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
Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 33
- 239000005060 rubber Substances 0.000 title claims abstract description 33
- 239000000203 mixture Substances 0.000 title claims abstract description 10
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 8
- 239000005062 Polybutadiene Substances 0.000 claims abstract description 13
- 229920002857 polybutadiene Polymers 0.000 claims abstract description 13
- 229920002545 silicone oil Polymers 0.000 claims abstract description 10
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 7
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 5
- 229920003244 diene elastomer Polymers 0.000 claims description 6
- 238000010060 peroxide vulcanization Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 abstract description 6
- 229920000181 Ethylene propylene rubber Polymers 0.000 abstract description 2
- 229920000459 Nitrile rubber Polymers 0.000 abstract description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 abstract description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 abstract description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 abstract 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 abstract 1
- 230000007774 longterm Effects 0.000 abstract 1
- 150000002978 peroxides Chemical class 0.000 abstract 1
- 239000000463 material Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 239000003921 oil Substances 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010068 moulding (rubber) Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- -1 polydimethylsiloxane Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は潤滑性ゴム組成物に関す
るもので、さらに詳しくはゴム材料が本来有するシール
性、強度、追従性を損なうことなく、しかも潤滑性も寄
与されたゴム成形体を形成しうる潤滑性ゴム組成物に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating rubber composition, and more specifically, to a rubber molded product which does not impair the sealability, strength and followability that rubber materials originally have, and which contributes to lubricity. The present invention relates to a lubricious rubber composition that can be formed.
【０００２】[0002]
【従来の技術】ゴム材料はシール部材などに成形され広
く利用されている。一般にゴム材料からなるゴム成形体
は摩擦係数が大きいため最初は密着性、追従性が良いが
次第に鳴き現象（スティック・スリップ）を起こし、そ
の結果摩耗し、初期の密着性、追従性が低下してくる。
このようなゴム材料に潤滑性を寄与する方法として種々
の方法が試みられていた。例えば、ゴム材料中にテトラ
フルオロエチレン（ＰＴＦＥ）などの樹脂、グラファイ
トあるいはモリブデンなどの固体潤滑剤を混入する方法
がある。また、シリコーンオイル、フッ素化オイルなど
の潤滑油を混入する方法があり、摺動時に潤滑油がしみ
出し低摩擦化が図られる（オイルブリード法）。また
は、ゴム成形体の表面に樹脂を被覆して成形体表面の潤
滑性を向上させる方法がある。2. Description of the Related Art A rubber material is widely used after being molded into a seal member or the like. Generally, a rubber molded body made of a rubber material has a large friction coefficient, so that the adhesiveness and the followability are good at first, but a squeal phenomenon (stick / slip) gradually occurs, and as a result, it wears, and the initial adhesiveness and the followability deteriorate. Come on.
Various methods have been tried as methods for contributing lubricity to such rubber materials. For example, there is a method of mixing a resin such as tetrafluoroethylene (PTFE) and a solid lubricant such as graphite or molybdenum into a rubber material. In addition, there is a method of mixing a lubricating oil such as silicone oil or fluorinated oil, which allows the lubricating oil to seep out during sliding to reduce friction (oil bleed method). Alternatively, there is a method of coating the surface of the rubber molding with a resin to improve the lubricity of the surface of the molding.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、前記の
ゴム材料中に固体潤滑剤を混入する方法においては、形
成されたゴム材料の機械的強度が低下したりゴム弾性が
低下して追従性が劣る傾向が有り、さらに圧縮永久歪も
大きくなる傾向がある。また、潤滑油を混入する方法に
おいては、このゴム材料からなる成形体は使用時にオイ
ルのブリード速度が大きく寿命にバラツキがあったり相
手材をオイルで汚すことがある。最後に、被覆表面を有
するゴム成形体では耐摩耗性、耐久性が不十分であった
りゴム成形体表面のゴム弾性が低下して追従性が劣るよ
うになる傾向がある。However, in the method of mixing the solid lubricant into the rubber material, the formed rubber material has a low mechanical strength and a low rubber elasticity, resulting in poor followability. There is a tendency, and the compression set tends to increase. In addition, in the method of mixing the lubricating oil, the molded body made of this rubber material may have a large bleeding speed of oil during use and may have a variation in life, or the mating material may be soiled with oil. Finally, the rubber molded product having a coated surface tends to have insufficient wear resistance and durability, or the rubber elasticity of the surface of the rubber molded product is reduced, resulting in poor followability.
【０００４】以上述べてきたように、ゴム材料が本来有
するシール性、強度、弾性、追従性を損なうことなく、
しかも長時間に亘り安定化して潤滑性、耐摩耗性などの
摺動特性を発現しうるゴム成形体を形成しうるゴム材料
の出現が望まれている。As described above, without impairing the sealability, strength, elasticity and followability which rubber materials originally have,
In addition, the emergence of a rubber material capable of forming a rubber molded product which can be stabilized for a long time and exhibit sliding properties such as lubricity and wear resistance is desired.
【０００５】[0005]
【課題を解決するための手段】上記の課題を解決するた
めに本発明は、過酸化物加硫の可能なジエン系ゴムとカ
ルボキシル基をもつ変性ポリブタジエン及び末端にＯＨ
基をもつシリコーンオイルを配合した潤滑性ゴム組成物
とする手段を採用したものである。まず、この発明のジ
エン系ゴムは従来公知のジエン系ゴムが広く用いられる
が、具体的にはニトリルゴム、エチレルプロピレンゴム
などを挙げることができる。さらにこれらのゴムは分子
中の二重結合の一部が水素化された水素化ゴムであって
もよい。次に、カルボキシル基をもつ変性ポリブタジエ
ンは、ポリブタジエンの側鎖にカルボキシル基がつなが
っているもので、例えば変性ポリブタジエン（日石．Ｍ
Ｍ−１０００−８０でメタクリル化ポリブタジエン）な
どがある。また、変性シリコーンオイルとしては、片末
端にＯＨ基をもつポリジメチルシロキサンで、例えば変
性シリコーンオイル（日本ユニカー ＦＺ−３１２２）
などを挙げることができる。In order to solve the above problems, the present invention provides a diene rubber capable of peroxide vulcanization, a modified polybutadiene having a carboxyl group and an OH at the end.
A means for producing a lubricating rubber composition containing a silicone oil having a base is adopted. First, as the diene rubber of the present invention, conventionally known diene rubbers are widely used, and specific examples thereof include nitrile rubber and ethylene propylene rubber. Further, these rubbers may be hydrogenated rubbers in which some of the double bonds in the molecule are hydrogenated. Next, the modified polybutadiene having a carboxyl group is one in which a carboxyl group is connected to the side chain of polybutadiene, and for example, modified polybutadiene (Nisseki.
M-1000-80 and methacrylated polybutadiene). As the modified silicone oil, polydimethylsiloxane having an OH group at one end, for example, modified silicone oil (Nippon Unicar FZ-3122)
And the like.
【０００６】[0006]
【作用】本発明の潤滑性ゴム組成物の組織は、潤滑性に
優れたシリコーンオイルの官能基（ＯＨ基）とアクリル
化変性ポリブタジエンのカルボキシル基（−ＣＯＯＨ）
と反応し、さらにポリブタジエンはジエン系ゴムの過酸
化物加硫の架橋助剤と働くため、シリコーンオイルと結
合したポリブタジエンはジエン系の網目構造の中に組込
まれ複雑強固にからまっている。その結果、ゴム弾性体
本来の基本的構造を破壊することもなく、機械的強度、
耐熱性を殆ど維持したまま、長期にわたり、低摩擦係数
の状態で安定しかつ耐摩耗性にも優れた成形品が得られ
ることになる。The function of the lubricating rubber composition of the present invention is that the functional group (OH group) of silicone oil having excellent lubricity and the carboxyl group (-COOH) of acrylate-modified polybutadiene are excellent.
Further, since polybutadiene acts as a crosslinking aid for peroxide vulcanization of the diene rubber, the polybutadiene bonded to the silicone oil is incorporated into the diene network structure and is complicatedly and strongly entangled. As a result, without breaking the basic structure of the rubber elastic body, the mechanical strength,
It is possible to obtain a molded product which is stable in a state of low friction coefficient and has excellent wear resistance for a long period of time while almost maintaining heat resistance.
【０００７】[0007]
【表１】 表１に示した配合はオープンロールを用いて充分混合し
た後、１８０℃５分間プレスによる加熱加圧をして厚さ
２ｍｍ板状のゴム加硫物を得た。この成形体についてＪ
ＩＳＫ６３０１に準拠して、引張り強度、伸び、硬度を
測定した。また、摩擦係数測定はリングオンディスク式
試験機を応用したもので、試験片の接触面積が０．７２
５ｃｍ2、荷重１ｋｇ、回転数１０ｒｐｍで行なった。
表１に示すように、比較例（１）に比べて架橋助剤をト
リアリルイソシアヌレートからポリブタジエンに変える
ことにより約１／２に摩擦係数が下がっている。さら
に、変性シリコーンオイルを添加すればさらに１／２に
低下することがわかる。また、物性面においても比較例
（１）と同等であることがわかる。[Table 1] The formulations shown in Table 1 were thoroughly mixed using an open roll, and then heated and pressed by a press at 180 ° C. for 5 minutes to obtain a rubber vulcanizate having a plate thickness of 2 mm. About this molded body J
Tensile strength, elongation and hardness were measured according to ISK6301. The friction coefficient was measured by applying a ring-on-disk type tester, and the contact area of the test piece was 0.72.
It was carried out at 5 cm 2 , a load of 1 kg, and a rotation speed of 10 rpm.
As shown in Table 1, as compared with Comparative Example (1), the friction coefficient is reduced to about 1/2 by changing the crosslinking aid from triallyl isocyanurate to polybutadiene. Furthermore, it can be seen that the addition of the modified silicone oil further reduces the amount to 1/2. Further, it can be seen that the physical properties are the same as in Comparative Example (1).
【０００８】[0008]
【発明の効果】以上のように本発明の潤滑性ゴム組成物
は、ジエン系ゴム弾性体の優れたシール性、変形に対す
る良好な追従性などの特性に加えて、優れた潤滑性をも
兼ね備えているため、長時間の摺動に対する安定性及び
信頼性は極めて高いので、自動車及び一般産業機械器具
などあらゆる分野の部品類として広く使用することがで
きる。INDUSTRIAL APPLICABILITY As described above, the lubricating rubber composition of the present invention has excellent lubricity in addition to the excellent sealing properties of the diene rubber elastic body and good followability to deformation. Therefore, the stability and reliability against sliding for a long time is extremely high, and therefore it can be widely used as parts in all fields such as automobiles and general industrial machinery.
Claims (1)
０重量部に対して、 １．カルボキシル基をもつ変性ポリブタジエン５〜２０
重量部 ２．末端水酸基をもつ変性シリコーンオイル５〜２０重
量部 前記１．２．を配合することを特徴とする潤滑性ゴム組
成物。1. A diene rubber 10 capable of peroxide vulcanization.
For 0 parts by weight, 1. Modified polybutadiene having a carboxyl group 5-20
Parts by weight 2. Modified silicone oil having terminal hydroxyl groups 5 to 20 parts by weight The above 1.2. A lubricating rubber composition comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21819795A JP3366956B2 (en) | 1995-08-02 | 1995-08-02 | Lubricating rubber composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21819795A JP3366956B2 (en) | 1995-08-02 | 1995-08-02 | Lubricating rubber composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0948879A true JPH0948879A (en) | 1997-02-18 |
| JP3366956B2 JP3366956B2 (en) | 2003-01-14 |
Family
ID=16716144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21819795A Expired - Fee Related JP3366956B2 (en) | 1995-08-02 | 1995-08-02 | Lubricating rubber composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3366956B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012090941A1 (en) * | 2010-12-27 | 2012-07-05 | 日本ゼオン株式会社 | Rubber composition and crosslinked rubber product |
| JP2012193294A (en) * | 2011-03-17 | 2012-10-11 | Nippon Zeon Co Ltd | Rubber composition for sliding member, and crosslinked rubber material for sliding member |
| CN106700155A (en) * | 2017-01-23 | 2017-05-24 | 青岛颐科密封材料有限公司 | Low-temperature oil-resisting nitrile rubber and preparation method and application thereof |
-
1995
- 1995-08-02 JP JP21819795A patent/JP3366956B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012090941A1 (en) * | 2010-12-27 | 2012-07-05 | 日本ゼオン株式会社 | Rubber composition and crosslinked rubber product |
| CN103380173A (en) * | 2010-12-27 | 2013-10-30 | 日本瑞翁株式会社 | Rubber composition and crosslinked rubber product |
| JP2012193294A (en) * | 2011-03-17 | 2012-10-11 | Nippon Zeon Co Ltd | Rubber composition for sliding member, and crosslinked rubber material for sliding member |
| CN106700155A (en) * | 2017-01-23 | 2017-05-24 | 青岛颐科密封材料有限公司 | Low-temperature oil-resisting nitrile rubber and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3366956B2 (en) | 2003-01-14 |
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