JPH11100472A - Ethylene/propylene-based copolymer rubber composition - Google Patents
Ethylene/propylene-based copolymer rubber compositionInfo
- Publication number
- JPH11100472A JPH11100472A JP27995797A JP27995797A JPH11100472A JP H11100472 A JPH11100472 A JP H11100472A JP 27995797 A JP27995797 A JP 27995797A JP 27995797 A JP27995797 A JP 27995797A JP H11100472 A JPH11100472 A JP H11100472A
- Authority
- JP
- Japan
- Prior art keywords
- ethylene
- copolymer rubber
- copper
- rubber composition
- propylene copolymer
- 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
Landscapes
- Sealing Material Composition (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、エチレン・プロピ
レン系共重合ゴム組成物に関する。更に詳しくは、銅と
接触するガスケットまたはパッキンの成形材料などとし
て有効に用いられるエチレン・プロピレン系共重合ゴム
組成物に関する。The present invention relates to an ethylene / propylene copolymer rubber composition. More specifically, the present invention relates to an ethylene / propylene-based copolymer rubber composition effectively used as a molding material for a gasket or a packing which comes into contact with copper.
【0002】[0002]
【従来の技術】エチレン・プロピレン共重合ゴムまたは
エチレン・プロピレン・ジエン共重合ゴムであるエチレン
・プロピレン系共重合ゴムは、ガスケットやパッキンな
どの成形材料として使用されているが、銅と接触する状
態で使用された場合、銅との間に固着が生じ、また劣化
も促進されるため、シール性能を低下させるという現象
がみられる。2. Description of the Related Art Ethylene-propylene copolymer rubber, which is ethylene-propylene copolymer rubber or ethylene-propylene-diene copolymer rubber, is used as a molding material for gaskets and packings, but is in contact with copper. In the case of being used, the adhesion to copper occurs and the deterioration is promoted, so that a phenomenon that the sealing performance is deteriorated is observed.
【0003】こうした現象を避けるために、次のような
方法が提案されている。 (1)銅-エチレン・プロピレン系共重合ゴム間に保護物質
を付着させる方法 保護物質としては固体潤滑剤やシリコーンコーティング
剤が用いられるが、これらの物質はゴム材料に対するな
じみが少ないため、その界面より流出し易く、継続して
固着防止効果を発揮させることは困難である。 (2)ゴム中に金属害防止剤および酸化防止剤を配合する
方法(特開昭54-127943号公報)。 金属害、特に銅害の防止剤としてはアミノベンズイミダ
ゾロンのアセチルアセトン化物が用いられており、これ
がキレート剤として作用しゴム中に侵入した銅イオンを
捕集するものであるが、キレート剤が失効あるいは流出
することにより、継続して固着防止効果を発揮させるこ
とは困難である。In order to avoid such a phenomenon, the following method has been proposed. (1) Method of adhering a protective substance between copper-ethylene-propylene copolymer rubber As a protective substance, a solid lubricant or a silicone coating agent is used. It is easier to flow out and it is difficult to continuously exert the effect of preventing sticking. (2) A method of blending a metal harm inhibitor and an antioxidant in rubber (Japanese Patent Application Laid-Open No. 54-127943). Aminobenzimidazolone acetylacetonate is used as an inhibitor of metal damage, especially copper damage, which acts as a chelating agent and collects copper ions that have penetrated rubber, but the chelating agent has expired. Alternatively, it is difficult to continuously exert the sticking prevention effect by flowing out.
【0004】[0004]
【発明が解決しようとする課題】本発明の目的は、銅と
接触して用いられる加硫成形品とした場合にあっても、
銅表面との間に固着を生ぜず、継続して有効に使用し得
るものを与えるエチレン・プロピレン系共重合ゴム組成
物を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a vulcanized molded product used in contact with copper.
An object of the present invention is to provide an ethylene / propylene copolymer rubber composition which does not cause sticking to a copper surface and which can be used continuously and effectively.
【0005】[0005]
【課題を解決するための手段】かかる本発明の目的は、
エチレン・プロピレン系共重合ゴムに有機ニトロソ化合
物を配合したエチレン・プロピレン系共重合ゴム組成物
によって達成される。SUMMARY OF THE INVENTION The object of the present invention is as follows.
This is achieved by an ethylene / propylene copolymer rubber composition in which an organic nitroso compound is blended with an ethylene / propylene copolymer rubber.
【0006】[0006]
【発明の実施の形態】有機ニトロソ化合物としては、N-
ニトロソジフェニルアミン、メチルフェニルニトロソア
ミン、ニトロソアニリン等の芳香族アミンのニトロソ体
が、エチレン・プロピレン系共重合ゴム100重量部当り約
0.1〜2.5重量部、好ましくは約0.1〜2重量部の割合で用
いられる。有機ニトロソ化合物の配合割合がこれより少
ないと、所期の銅害防止効果が得られず、一方これより
多い割合で用いられると、ゴムの常態物性、特に引張強
さの低下が著しくなるので好ましくない。BEST MODE FOR CARRYING OUT THE INVENTION As an organic nitroso compound, N-
The nitroso form of an aromatic amine such as nitrosodiphenylamine, methylphenylnitrosamine, or nitrosoaniline is used in an amount of about 100 parts by weight of ethylene-propylene copolymer rubber.
It is used in a proportion of 0.1 to 2.5 parts by weight, preferably about 0.1 to 2 parts by weight. If the compounding ratio of the organic nitroso compound is less than this, the expected effect of preventing copper damage is not obtained.On the other hand, if the compounding ratio is more than this, the normal physical properties of rubber, particularly the tensile strength is significantly reduced, so that it is preferable. Absent.
【0007】有機ニトロソ化合物を配合したエチレン・
プロピレン系共重合ゴム組成物中には、架橋剤その他の
必要な配合剤が適宜配合され、組成物の調製および加硫
は、従来法と同様に行われる。Ethylene containing an organic nitroso compound
A crosslinking agent and other necessary compounding agents are appropriately compounded in the propylene-based copolymer rubber composition, and preparation and vulcanization of the composition are performed in the same manner as in the conventional method.
【0008】[0008]
【発明の効果】本発明に係るエチレン・プロピレン系共
重合ゴム組成物から得られる加硫成形品は、それが銅と
接触する状態で使用された場合にあっても、有機ニトロ
ソ化合物が銅と反応して不活性化させるので、固着を生
じさせない。また、そこに添加された有機ニトロソ化合
物は容易に除去されないので、継続して固着防止効果を
発揮することができ、従ってこの組成物は、銅と接触す
るガスケットやパッキンの成形材料として有効に用いる
ことができる。The vulcanized molded product obtained from the ethylene / propylene copolymer rubber composition according to the present invention has an organic nitroso compound which is not used even when it is used in contact with copper. It reacts and inactivates and does not cause sticking. In addition, since the organic nitroso compound added thereto is not easily removed, it is possible to continuously exert an anti-sticking effect. Therefore, this composition is effectively used as a molding material for gaskets and packings that come into contact with copper. be able to.
【0009】[0009]
【実施例】次に、実施例について本発明を説明する。Next, the present invention will be described with reference to examples.
【0010】 実施例1〜3、比較例1 エチレン・プロピレン系共重合ゴム (住友化学製品エスプレン501A) 100重量部 SRF-HSカーボンブラック 40 〃 酸化亜鉛 5 〃 ステアリン酸 0.5 〃 重合2,2,4-トリメチル-1,2-ジヒドロキノリン 4 〃 ジクミルパーオキサイド 4 〃 N-ニトロソジフェニルアミン 0.1 〃 (実施例1) 0.3 〃 (実施例2) 2 〃 (実施例3) 3 〃 (比較例1)Examples 1 to 3, Comparative Example 1 100 parts by weight of ethylene-propylene copolymer rubber (Esprene 501A manufactured by Sumitomo Chemical Co., Ltd.) SRF-HS carbon black 40 〃 zinc oxide 5 ス テ stearic acid 0.5, polymerization 2,2,4 -Trimethyl-1,2-dihydroquinoline 4 〃Dicumyl peroxide 4 〃N-nitrosodiphenylamine 0.1 〃 (Example 1) 0.3 〃 (Example 2) 2 〃 (Example 3) 3 〃 (Comparative example 1)
【0011】以上の各配合成分をオープンロールで混練
し、得られた組成物について180℃、8分間のプレス加硫
および150℃、15時間のオーブン加硫(二次加硫)を行な
い、厚さ2mmのゴムシートを加硫成形した。The above components are kneaded with an open roll, and the obtained composition is subjected to press vulcanization at 180 ° C. for 8 minutes and oven vulcanization (secondary vulcanization) at 150 ° C. for 15 hours to obtain a thickened composition. A 2 mm rubber sheet was vulcanized.
【0012】比較例2 実施例1において、N-ニトロソジフェニルアミンが用い
られなかった。Comparative Example 2 In Example 1, N-nitrosodiphenylamine was not used.
【0013】比較例3 実施例1において、N-ニトロソジフェニルアミンが用い
られず、メルカプトベンゾチアゾールが2重量部更に添
加されて用いられた。Comparative Example 3 In Example 1, N-nitrosodiphenylamine was not used, and 2 parts by weight of mercaptobenzothiazole was further used.
【0014】以上の各実施例および比較例で得られた加
硫ゴムシートについて、次の各項目の測定が行われた。 常態物性:JIS K-6301準拠 固着防止性:加硫ゴムシートから2×5mmの試験片を切り
出し、6〜8個の試験片を、表面を1000番耐水ペーパーで
磨いた純銅板(80×100×0.8mm)2枚の間に試験片の切断
面が銅板面に接するように挟み込み、40%圧縮した状態
で、130℃のギヤオーブン中に100時間入れ、その後圧縮
より解放し、冷却させた後、試験片を銅板より剥離す
る。剥離した際、ゴムが破壊され、銅板上に残った場合
を×、破壊されなかった場合を○とした。 銅板接触面変質:硫化銅(I)および酸化銅(II)を生ずるThe following items were measured for the vulcanized rubber sheets obtained in the above Examples and Comparative Examples. Normal property: JIS K-6301 compliant Anti-sticking property: A 2 x 5 mm test piece was cut out from a vulcanized rubber sheet, and 6 to 8 test pieces were polished on a pure copper plate (80 x 100 (× 0.8mm) sandwiched between two pieces so that the cut surface of the test piece was in contact with the copper plate surface, put it in a 40% compressed state in a 130 ° C. gear oven for 100 hours, then released from compression and allowed to cool Thereafter, the test piece is peeled from the copper plate. When peeled, the rubber was broken, and was marked X when the rubber remained on the copper plate, and was marked when it was not broken. Copper plate contact surface alteration: produces copper (I) sulfide and copper (II) oxide
【0015】測定結果は、次の表に示される。 表 実施例 比較例 測定項目 1 2 3 1 2 3 [常態物性] 硬さ (JIS A) 64 64 60 57 64 61 引張強さ (MPa) 19.0 18.4 14.2 10.3 19.2 15.7 伸び (%) 410 350 710 910 430 850 [固着防止性] ○ ○ ○ ○ × × [銅板接触面変質] あり あり あり あり なし ありThe measurement results are shown in the following table. Table Example Comparative Example Measurement items 1 2 3 1 2 3 [Normal physical properties] Hardness (JIS A) 64 64 60 57 64 61 Tensile strength (MPa) 19.0 18.4 14.2 10.3 19.2 15.7 Elongation (%) 410 350 710 910 430 850 [Anti-sticking property] ○ ○ ○ ○ × × [Deterioration of copper plate contact surface] Yes Yes Yes Yes No Yes
Claims (2)
機ニトロソ化合物を配合してなるエチレン・プロピレン
系共重合ゴム組成物。1. An ethylene / propylene copolymer rubber composition comprising an ethylene / propylene copolymer rubber and an organic nitroso compound.
の成形材料として用いられる請求項1記載のエチレン・プ
ロピレン系共重合ゴム組成物2. The ethylene / propylene copolymer rubber composition according to claim 1, which is used as a molding material for a gasket or a packing in contact with copper.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27995797A JP3525702B2 (en) | 1997-09-26 | 1997-09-26 | Ethylene / propylene copolymer rubber composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27995797A JP3525702B2 (en) | 1997-09-26 | 1997-09-26 | Ethylene / propylene copolymer rubber composition |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11100472A true JPH11100472A (en) | 1999-04-13 |
JP3525702B2 JP3525702B2 (en) | 2004-05-10 |
Family
ID=17618289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP27995797A Expired - Fee Related JP3525702B2 (en) | 1997-09-26 | 1997-09-26 | Ethylene / propylene copolymer rubber composition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3525702B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002124220A (en) * | 2000-10-18 | 2002-04-26 | Japan Storage Battery Co Ltd | Lead-acid battery |
-
1997
- 1997-09-26 JP JP27995797A patent/JP3525702B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002124220A (en) * | 2000-10-18 | 2002-04-26 | Japan Storage Battery Co Ltd | Lead-acid battery |
Also Published As
Publication number | Publication date |
---|---|
JP3525702B2 (en) | 2004-05-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1985657B1 (en) | Hydrogenated nbr composition | |
WO2007094447A1 (en) | Hydrogenated nbr compositions | |
JP2007161869A (en) | Sealant vulcanization molding ethylene-alkylacrylate copolymer rubber composition | |
US8697782B2 (en) | Rubber composition | |
JPH11100472A (en) | Ethylene/propylene-based copolymer rubber composition | |
JPH11293038A (en) | Nbr composition | |
MX2013003909A (en) | Accelerator composition for elastomers. | |
JP4799763B2 (en) | Refrigerator seal | |
JP2002020541A (en) | Nbr composition | |
JP3502609B2 (en) | Rubber composition for sealing, oil seal member using the same, and sealing material | |
JP4329386B2 (en) | Nitrile rubber compound | |
JP2006213743A (en) | Hydrogenated nitrile rubber composition | |
JPH1060198A (en) | Rubber composition having excellent resistance to chlorine | |
JPH07118447A (en) | Rubber composition | |
JP3480269B2 (en) | Hydrogenated NBR composition | |
JP3367309B2 (en) | Hydrogenated nitrile rubber composition | |
EP3805311A1 (en) | Rubber composition containing ethylene-propylene-nonconjugated polyene copolymer | |
JPH06184388A (en) | Acrylic rubber composition | |
CN115996979B (en) | Ethylene-propylene copolymer rubber composition | |
JP5653605B2 (en) | Rubber composition and seal member using the same | |
JP2753679B2 (en) | Manufacturing method of heat resistant rubber products | |
JPH09124881A (en) | Acrylic rubber composition and its production | |
JPH10279751A (en) | Epdm composition | |
JP2006143977A (en) | Fluororubber composition | |
JPH03250037A (en) | Rubber composition |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20031222 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Effective date: 20040127 Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20040209 |
|
R150 | Certificate of patent (=grant) or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 4 Free format text: PAYMENT UNTIL: 20080227 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090227 Year of fee payment: 5 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090227 Year of fee payment: 5 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100227 Year of fee payment: 6 |
|
LAPS | Cancellation because of no payment of annual fees |