JPH10130428A - Rubber composition and molded product thereof - Google Patents
Rubber composition and molded product thereofInfo
- Publication number
- JPH10130428A JPH10130428A JP30093396A JP30093396A JPH10130428A JP H10130428 A JPH10130428 A JP H10130428A JP 30093396 A JP30093396 A JP 30093396A JP 30093396 A JP30093396 A JP 30093396A JP H10130428 A JPH10130428 A JP H10130428A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- rubber
- parts
- nbr
- dlc
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ダイヤモンド・ラ
イク・カーボン（以下、ＤＬＣと記す）の表面処理膜の
形成を可能にしたゴム組成物およびそのゴム成形品に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber composition capable of forming a surface-treated film of diamond-like carbon (hereinafter referred to as DLC) and a rubber molded product thereof.
【０００２】[0002]
【従来の技術】一般に、弁は自動車のエンジンなどの内
燃機関の燃料系、あるいは家庭用プロパンガスの供給を
遮断する系などに数多く使用されている。そして、この
弁は、例えば電磁石あるいはスプリングなどの作用によ
って、軸方向に可動可能になっており、流体通路に開設
される弁座にオン・オフ接触を行うことにより、流体通
路内を通る流体の量を抑制したり、あるいは流体の流れ
を通過・遮断制御するものである。このように、弁は、
常時、オン・オフ動作するタイプ、正常時には一方
の弁座に接触し、異常時には他方の弁座に接触するタイ
プがあり、この弁に用いられるパッキンの材質はゴム、
詳細にはアクリロ・ニトリル・ブタジエン・ゴム（以
下、ＮＢＲと記す）が用いられる。2. Description of the Related Art In general, valves are widely used for a fuel system of an internal combustion engine such as an automobile engine or a system for shutting off supply of household propane gas. The valve is axially movable, for example, by the action of an electromagnet or a spring, and performs on / off contact with a valve seat opened in the fluid passage to allow the fluid passing through the fluid passage to pass through. It is to control the amount or to control the flow of the fluid. Thus, the valve
There is a type that constantly turns on and off, and a type that contacts one valve seat during normal operation and contacts the other valve seat during abnormal operation. The packing material used for this valve is rubber,
Specifically, acrylonitrile-butadiene rubber (hereinafter referred to as NBR) is used.
【０００３】上記のタイプの場合、ゴムパッキンが、
長い期間、一方の弁座に圧接した状態のため、固着（粘
着）しており、異常を検出して切り替え駆動する場合、
一方の弁座から離れなくなったり、離れるまでに時間が
かかるなどの事態が発生する。そこで、従来は、長い期
間、一方の弁座に圧接された状態でも、固着（粘着）せ
ず、しかもシール性が良好なゴムパッキンが求められて
いた。このため、近年、このＮＢＲ製のゴムパッキンの
表面をハロゲン処理した、いわゆるハロゲン処理ゴムパ
ッキンが使用されている。In the case of the above type, the rubber packing is
For a long period of time, it is stuck (adhesive) because it is in pressure contact with one of the valve seats.
A situation occurs in which one of the valve seats cannot be separated, or it takes time to separate. Therefore, conventionally, there has been a demand for a rubber packing that does not adhere (adhere) even when pressed against one of the valve seats for a long period of time and has good sealing properties. Therefore, in recent years, a so-called halogen-treated rubber packing in which the surface of the rubber packing made of NBR is halogen-treated has been used.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
ハロゲン処理ゴムパッキンは、非固着（非粘着）性が良
好であるが、ハロゲン処理により、その表面が荒れた
り、表面部分のゴム硬度が高くなり、シール性が悪くな
るという問題点がある。However, the conventional halogen-treated rubber packing has good non-sticking (non-adhesive) properties, but its surface is roughened and the rubber hardness of the surface is increased by the halogen treatment. However, there is a problem that the sealing property is deteriorated.
【０００５】したがって、本発明の目的は、このＮＢＲ
製のゴムパッキンの表面に新規な表面処理膜の形成を可
能にするゴム組成物を提供するものである。Accordingly, an object of the present invention is to provide an NBR
The present invention provides a rubber composition that enables formation of a novel surface treatment film on the surface of a rubber packing made of rubber.
【０００６】本発明の他の目的は、このＮＢＲ製のゴム
パッキンの表面に新規な表面処理膜を形成することによ
り、優れた非固着性（非粘着性）およびシール性をバラ
ンス良く備えているゴム成形品を提供するものである。Another object of the present invention is to form a novel surface-treated film on the surface of the rubber packing made of NBR, thereby providing excellent non-sticking (non-adhesive) and sealing properties in a well-balanced manner. It is intended to provide a rubber molded product.
【０００７】そこで、発明者は、このゴムパッキンで
は、ＮＢＲ組成物の表面とＤＬＣの表面処理膜との密着
強度を必要とするため、このＮＢＲ組成物の表面にＤＬ
Ｃの表面処理膜を形成する場合、この密着強度を基準に
して判定する。まず、平行平板型の高周波プラズマ装置
を用いて、メタンガスの流量、ガス圧、基板温度、高周
波出力、ゴム基材に配合するゴム薬品の重量部を変えて
試みた。その結果、メタンガスの流量、ガス圧、基板温
度、高周波出力を変えても、ゴム組成物とＤＬＣの表面
処理膜との密着強度にはそれほど変化なく、ゴム基材に
配合するゴム薬品の重量部により、その密着強度が大き
く変化することを見いだした。Therefore, the inventor of the present invention has required that the rubber packing require an adhesive strength between the surface of the NBR composition and the surface-treated film of the DLC.
When forming the surface treatment film C, the determination is made based on the adhesion strength. First, using a parallel plate type high frequency plasma apparatus, an attempt was made to change the flow rate of methane gas, gas pressure, substrate temperature, high frequency output, and parts by weight of the rubber chemical compounded into the rubber base material. As a result, even if the flow rate of methane gas, gas pressure, substrate temperature, and high-frequency output are changed, the adhesion strength between the rubber composition and the surface treatment film of DLC does not change so much. It has been found that the adhesion strength greatly changes by the method.
【０００８】[0008]
【課題を解決するための手段】本発明のゴム組成物は、
ＮＢＲを基材とし、このＮＢＲ基材に配合されるゴム薬
品のうち、ワックス成分が０〜１重量部、老化防止剤が
０〜３重量部、可塑剤が０〜２０重量部とすることによ
り、ＮＢＲ組成物の表面にＤＬＣの表面処理膜の形成を
可能にしたものである。Means for Solving the Problems The rubber composition of the present invention comprises:
By using NBR as a base material, a wax component is 0 to 1 part by weight, an antioxidant is 0 to 3 parts by weight, and a plasticizer is 0 to 20 parts by weight in a rubber chemical compounded in the NBR base material. , And a NLC composition on the surface thereof.
【０００９】本発明のゴム成形品は、ＮＢＲを基材と
し、このＮＢＲ基材に配合されるゴム薬品のうち、ワッ
クス成分が０〜１重量部、老化防止剤が０〜３重量部、
可塑剤が０〜２０重量部を配合したＮＢＲ組成物の表面
にＤＬＣの表面処理膜を形成したものである。本発明の
ゴム成形品は、弁座に対してオン・オフ動作する弁のパ
ッキンである。The rubber molded product of the present invention comprises NBR as a base material, and among rubber chemicals compounded in the NBR base material, a wax component is contained in an amount of 0 to 1 part by weight, an antioxidant is contained in an amount of 0 to 3 parts by weight,
A DLC surface-treated film is formed on the surface of an NBR composition containing 0 to 20 parts by weight of a plasticizer. The rubber molded product of the present invention is a packing for a valve that is turned on and off with respect to a valve seat.
【００１０】[0010]
【発明の実施の形態】次に、実施例について本発明を説
明する。 実施例１ ＮＢＲ：１００重量部、亜鉛華：５重量部、ステ
アリン酸：１重量部、カーボン：６０重量部、可塑
剤：２０重量部、加硫促進剤：４重量部、硫黄：１
重量部、老化防止剤：３重量部、ワックス：１重量
部からなるＮＢＲ組成物の表面にＤＬＣの表面処理膜を
形成した場合、（ａ）ＤＬＣ膜は良好に形成される、
（ｂ）ＤＬＣ膜の密着性は良好、（ｃ）ＤＬＣ膜の剥離
試験（周囲温度：１２０℃、７０時間）では剥離せず、
（ｄ）ＤＬＣ膜の固着試験（周囲温度：１２０℃、７０
時間）では固着せず。Next, the present invention will be described with reference to examples. Example 1 NBR: 100 parts by weight, zinc white: 5 parts by weight, stearic acid: 1 part by weight, carbon: 60 parts by weight, plasticizer: 20 parts by weight, vulcanization accelerator: 4 parts by weight, sulfur: 1
When a DLC surface-treated film is formed on the surface of an NBR composition consisting of 3 parts by weight, an antioxidant: 3 parts by weight, and wax: 1 part by weight, (a) the DLC film is formed well.
(B) The adhesion of the DLC film is good, and (c) it does not peel in the peel test (ambient temperature: 120 ° C., 70 hours) of the DLC film.
(D) Adhesion test of DLC film (ambient temperature: 120 ° C, 70
Time) without sticking.
【００１１】実施例２ ＮＢＲ：１００重量部、亜鉛華：５重量部、ステ
アリン酸：１重量部、カーボン：６０重量部、可塑
剤：０重量部、加硫促進剤：４重量部、硫黄：１重
量部、老化防止剤：０重量部、ワックス：１重量部
からなるＮＢＲ組成物の表面にＤＬＣの表面処理膜を形
成した場合、（ａ）ＤＬＣ膜は良好に形成される、
（ｂ）ＤＬＣ膜の密着性は良好、（ｃ）ＤＬＣ膜の剥離
試験（周囲温度：１２０℃、７０時間）では剥離せず、
（ｄ）ＤＬＣ膜の固着試験（周囲温度：１２０℃、７０
時間）では固着せず。Example 2 NBR: 100 parts by weight, zinc white: 5 parts by weight, stearic acid: 1 part by weight, carbon: 60 parts by weight, plasticizer: 0 parts by weight, vulcanization accelerator: 4 parts by weight, sulfur: When a DLC surface treatment film is formed on the surface of an NBR composition comprising 1 part by weight, an antioxidant: 0 parts by weight, and wax: 1 part by weight, (a) the DLC film is formed well.
(B) The adhesion of the DLC film is good, and (c) it does not peel in the peel test (ambient temperature: 120 ° C., 70 hours) of the DLC film.
(D) Adhesion test of DLC film (ambient temperature: 120 ° C, 70
Time) without sticking.
【００１２】なお、次に比較例を説明する。 比較例１ ＮＢＲ：１００重量部、亜鉛華：５重量部、ステ
アリン酸：１重量部、カーボン：６０重量部、可塑
剤：２５重量部、加硫促進剤：４重量部、硫黄：１
重量部、老化防止剤：５重量部、ワックス：２重量
部からなるＮＢＲ組成物の表面にＤＬＣの表面処理膜を
形成した場合、（ａ）ＤＬＣ膜は形成されない、（ｂ）
ＤＬＣ膜の密着性は悪く、直ぐに剥がれる、（ｃ）ＤＬ
Ｃ膜の剥離試験（周囲温度：１２０℃、７０時間）では
剥離する、（ｄ）ＤＬＣ膜の固着試験（周囲温度：１２
０℃、７０時間）では固着する。Next, a comparative example will be described. Comparative Example 1 NBR: 100 parts by weight, zinc white: 5 parts by weight, stearic acid: 1 part by weight, carbon: 60 parts by weight, plasticizer: 25 parts by weight, vulcanization accelerator: 4 parts by weight, sulfur: 1
When a DLC surface treatment film is formed on the surface of an NBR composition consisting of 5 parts by weight, an antioxidant: 5 parts by weight, and wax: 2 parts by weight, (a) no DLC film is formed, (b)
DLC film has poor adhesion and peels off immediately. (C) DL
In the peeling test of the C film (ambient temperature: 120 ° C., 70 hours), the film is peeled. (D) The adhesion test of the DLC film (ambient temperature: 12)
(0 ° C., 70 hours).
【００１３】比較例２ ＮＢＲ：１００重量部、亜鉛華：５重量部、ステ
アリン酸：１重量部、カーボン：６０重量部、可塑
剤：２０重量部、加硫促進剤：４重量部、硫黄：１
重量部、老化防止剤：６重量部、ワックス：１重量
部からなるＮＢＲ組成物の表面にＤＬＣの表面処理膜を
形成した場合、（ａ）ＤＬＣ膜はある程度形成される、
（ｂ）ＤＬＣ膜の密着性は悪く、直ぐに剥がれる、
（ｃ）ＤＬＣ膜の剥離試験（周囲温度：１２０℃、７０
時間）では剥離する、（ｄ）ＤＬＣ膜の固着試験（周囲
温度：１２０℃、７０時間）では固着する。Comparative Example 2 NBR: 100 parts by weight, zinc white: 5 parts by weight, stearic acid: 1 part by weight, carbon: 60 parts by weight, plasticizer: 20 parts by weight, vulcanization accelerator: 4 parts by weight, sulfur: 1
When a DLC surface treatment film is formed on the surface of an NBR composition composed of 6 parts by weight, an antioxidant: 6 parts by weight, and wax: 1 part by weight, (a) the DLC film is formed to some extent.
(B) the adhesion of the DLC film is poor,
(C) Peeling test of DLC film (ambient temperature: 120 ° C., 70
(D) The DLC film adheres in the adhesion test (ambient temperature: 120 ° C., 70 hours).
【００１４】比較例３ ＮＢＲ：１００重量部、亜鉛華：５重量部、ステ
アリン酸：１重量部、カーボン：６０重量部、可塑
剤：２０重量部、加硫促進剤：４重量部、硫黄：１
重量部、老化防止剤：３重量部、ワックス：２重量
部からなるＮＢＲ組成物の表面にＤＬＣの表面処理膜を
形成した場合、（ａ）ＤＬＣ膜は良好に形成される、
（ｂ）ＤＬＣ膜の密着性は悪く、直ぐに剥がれる、
（ｃ）ＤＬＣ膜の剥離試験（周囲温度：１２０℃、７０
時間）では剥離する、（ｄ）ＤＬＣ膜の固着試験（周囲
温度：１２０℃、７０時間）では固着する。Comparative Example 3 NBR: 100 parts by weight, zinc white: 5 parts by weight, stearic acid: 1 part by weight, carbon: 60 parts by weight, plasticizer: 20 parts by weight, vulcanization accelerator: 4 parts by weight, sulfur: 1
When a DLC surface-treated film is formed on the surface of an NBR composition composed of 3 parts by weight, an antioxidant: 3 parts by weight, and wax: 2 parts by weight, (a) the DLC film is formed well.
(B) the adhesion of the DLC film is poor,
(C) Peeling test of DLC film (ambient temperature: 120 ° C., 70
(D) The DLC film adheres in the adhesion test (ambient temperature: 120 ° C., 70 hours).
【００１５】比較例４ ＮＢＲ：１００重量部、亜鉛華：５重量部、ステ
アリン酸：１重量部、カーボン：６０重量部、可塑
剤：２５重量部、加硫促進剤：４重量部、硫黄：１
重量部、老化防止剤：３重量部、ワックス：１重量
部からなるＮＢＲ組成物の表面にＤＬＣの表面処理膜を
形成した場合、（ａ）ＤＬＣ膜は良好に形成される、
（ｂ）ＤＬＣ膜の密着性は悪く、直ぐに剥がれる、
（ｃ）ＤＬＣ膜の剥離試験（周囲温度：１２０℃、７０
時間）では剥離する、（ｄ）ＤＬＣ膜の固着試験（周囲
温度：１２０℃、７０時間）では固着する。Comparative Example 4 NBR: 100 parts by weight, zinc white: 5 parts by weight, stearic acid: 1 part by weight, carbon: 60 parts by weight, plasticizer: 25 parts by weight, vulcanization accelerator: 4 parts by weight, sulfur: 1
When a surface-treated film of DLC is formed on the surface of an NBR composition comprising 3 parts by weight, an antioxidant: 3 parts by weight, and wax: 1 part by weight, (a) the DLC film is formed well.
(B) the adhesion of the DLC film is poor,
(C) Peeling test of DLC film (ambient temperature: 120 ° C., 70
(D) The DLC film adheres in the adhesion test (ambient temperature: 120 ° C., 70 hours).
【００１６】[0016]
【発明の効果】以上、詳細に説明したように、本発明の
係るゴム組成物およびそのゴム成形品は、アクリロ・ニ
トリル・ブタジエン・ゴム（ＮＢＲ）組成物の表面にダ
イヤモンド・ライク・カーボン（ＤＬＣ）の表面処理膜
を形成可能にすることができる。また、アクリロ・ニト
リル・ブタジエン・ゴム（ＮＢＲ）組成物の表面にダイ
ヤモンド・ライク・カーボン（ＤＬＣ）の表面処理膜を
形成したゴム成形品を提供することができるなどの効果
がある。As described above in detail, the rubber composition and the rubber molded product according to the present invention have a diamond-like carbon (DLC) on the surface of an acrylonitrile-butadiene rubber (NBR) composition. ) Can be formed. Further, there is an effect that a rubber molded product having a surface treated film of diamond-like carbon (DLC) formed on the surface of an acrylonitrile-butadiene rubber (NBR) composition can be provided.
Claims (3)
を基材とし、この基材にゴム薬品を配合して作られるゴ
ム組成物であって、この配合されるゴム薬品のうち、ワ
ックス成分が０〜１重量部、老化防止剤が０〜３重量
部、可塑剤が０〜２０重量部とすることを特徴とするゴ
ム組成物。1. A rubber composition made from acrylo-nitrile-butadiene rubber as a base material and a rubber chemical compounded with the base material, wherein the wax component of the compounded rubber chemical is 0 to 0. 1 part by weight, 0 to 3 parts by weight of an antioxidant, and 0 to 20 parts by weight of a plasticizer.
を基材とし、この基材にゴム薬品を配合して作られるゴ
ム組成物であって、この配合されるゴム薬品のうち、ワ
ックス成分が０〜１重量部、老化防止剤が０〜３重量
部、可塑剤が０〜２０重量部を配合したゴム組成物の表
面にダイヤモンド・ライク・カーボンの表面処理膜を形
成したことを特徴とするゴム成形品。2. A rubber composition made from acrylo-nitrile-butadiene rubber as a base material and a rubber chemical compounded into the base material, wherein a wax component of the compounded rubber chemical is 0 to 0. Rubber molding characterized in that a surface treatment film of diamond-like carbon is formed on the surface of a rubber composition containing 1 part by weight, an antioxidant of 0 to 3 parts by weight, and a plasticizer of 0 to 20 parts by weight. Goods.
オフ動作する弁のパッキンであることを特徴とする請求
項２記載のゴム成形品。3. The rubber molded product is turned on and off with respect to a valve seat.
3. The molded rubber article according to claim 2, wherein the molded article is a packing for a valve that is turned off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30093396A JPH10130428A (en) | 1996-10-25 | 1996-10-25 | Rubber composition and molded product thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30093396A JPH10130428A (en) | 1996-10-25 | 1996-10-25 | Rubber composition and molded product thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10130428A true JPH10130428A (en) | 1998-05-19 |
Family
ID=17890864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30093396A Pending JPH10130428A (en) | 1996-10-25 | 1996-10-25 | Rubber composition and molded product thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10130428A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005199380A (en) * | 2004-01-15 | 2005-07-28 | Fujikura Rubber Ltd | Buffer material for sucking and holding |
| JP2006057008A (en) * | 2004-08-20 | 2006-03-02 | Plasma Ion Assist Co Ltd | Sealant and method for producing the same |
| US7267113B2 (en) | 2005-02-18 | 2007-09-11 | Denso Corporation | Fluid control valve |
-
1996
- 1996-10-25 JP JP30093396A patent/JPH10130428A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005199380A (en) * | 2004-01-15 | 2005-07-28 | Fujikura Rubber Ltd | Buffer material for sucking and holding |
| JP2006057008A (en) * | 2004-08-20 | 2006-03-02 | Plasma Ion Assist Co Ltd | Sealant and method for producing the same |
| JP4733941B2 (en) * | 2004-08-20 | 2011-07-27 | 株式会社プラズマイオンアシスト | Sealing material and manufacturing method thereof |
| US7267113B2 (en) | 2005-02-18 | 2007-09-11 | Denso Corporation | Fluid control valve |
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