JPH0428222B2 - - Google Patents
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- Publication number
- JPH0428222B2 JPH0428222B2 JP1039885A JP1039885A JPH0428222B2 JP H0428222 B2 JPH0428222 B2 JP H0428222B2 JP 1039885 A JP1039885 A JP 1039885A JP 1039885 A JP1039885 A JP 1039885A JP H0428222 B2 JPH0428222 B2 JP H0428222B2
- Authority
- JP
- Japan
- Prior art keywords
- compound
- acm
- compound layer
- rubber
- weight
- 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
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- -1 alkoxyalkyl acrylate Chemical compound 0.000 claims description 31
- 150000001875 compounds Chemical class 0.000 claims description 29
- 229920001971 elastomer Polymers 0.000 claims description 17
- 239000005060 rubber Substances 0.000 claims description 17
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 229920000800 acrylic rubber Polymers 0.000 claims description 9
- 229920000058 polyacrylate Polymers 0.000 claims description 9
- 125000004432 carbon atom Chemical group C* 0.000 claims description 8
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 claims description 7
- ZRALSGWEFCBTJO-UHFFFAOYSA-N anhydrous guanidine Natural products NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 claims description 7
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 claims description 7
- 125000005250 alkyl acrylate group Chemical group 0.000 claims description 6
- 229920001973 fluoroelastomer Polymers 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 125000002947 alkylene group Chemical group 0.000 claims description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 2
- 239000005977 Ethylene Substances 0.000 claims description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 2
- 125000004183 alkoxy alkyl group Chemical group 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 38
- 229920002449 FKM Polymers 0.000 description 24
- 239000003921 oil Substances 0.000 description 8
- 238000004073 vulcanization Methods 0.000 description 8
- 230000006866 deterioration Effects 0.000 description 7
- 229920001577 copolymer Polymers 0.000 description 6
- 239000000446 fuel Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 4
- 229920005862 polyol Polymers 0.000 description 4
- 150000003077 polyols Chemical class 0.000 description 4
- 229920000459 Nitrile rubber Polymers 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000002357 guanidines Chemical class 0.000 description 2
- LNMQRPPRQDGUDR-UHFFFAOYSA-N hexyl prop-2-enoate Chemical compound CCCCCCOC(=O)C=C LNMQRPPRQDGUDR-UHFFFAOYSA-N 0.000 description 2
- 239000012744 reinforcing agent Substances 0.000 description 2
- 229920001897 terpolymer Polymers 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- FTALTLPZDVFJSS-UHFFFAOYSA-N 2-(2-ethoxyethoxy)ethyl prop-2-enoate Chemical compound CCOCCOCCOC(=O)C=C FTALTLPZDVFJSS-UHFFFAOYSA-N 0.000 description 1
- HZMXJTJBSWOCQB-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethyl prop-2-enoate Chemical compound COCCOCCOC(=O)C=C HZMXJTJBSWOCQB-UHFFFAOYSA-N 0.000 description 1
- PTJDGKYFJYEAOK-UHFFFAOYSA-N 2-butoxyethyl prop-2-enoate Chemical compound CCCCOCCOC(=O)C=C PTJDGKYFJYEAOK-UHFFFAOYSA-N 0.000 description 1
- FWWXYLGCHHIKNY-UHFFFAOYSA-N 2-ethoxyethyl prop-2-enoate Chemical compound CCOCCOC(=O)C=C FWWXYLGCHHIKNY-UHFFFAOYSA-N 0.000 description 1
- HFCUBKYHMMPGBY-UHFFFAOYSA-N 2-methoxyethyl prop-2-enoate Chemical compound COCCOC(=O)C=C HFCUBKYHMMPGBY-UHFFFAOYSA-N 0.000 description 1
- OMFMOEOGTAYVMW-UHFFFAOYSA-N CC=C.C=C.C=C(F)F.F.F.F.F.F.F.F.F.F.F Chemical compound CC=C.C=C.C=C(F)F.F.F.F.F.F.F.F.F.F.F OMFMOEOGTAYVMW-UHFFFAOYSA-N 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Natural products P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000000370 acceptor Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000011157 advanced composite material Substances 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- SINFYWWJOCXYFD-UHFFFAOYSA-N methoxymethyl prop-2-enoate Chemical compound COCOC(=O)C=C SINFYWWJOCXYFD-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- ANISOHQJBAQUQP-UHFFFAOYSA-N octyl prop-2-enoate Chemical compound CCCCCCCCOC(=O)C=C ANISOHQJBAQUQP-UHFFFAOYSA-N 0.000 description 1
- 238000010060 peroxide vulcanization Methods 0.000 description 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 238000010058 rubber compounding Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Description
（産業上の利用分野）
本発明は、自動車用燃料ホース等の素材として
好適に用いられるフツ素ゴム配合物層とアクリル
ゴム配合物とを直接加硫接着してなるゴム積層体
に関する。
（従来技術）
フツ素ゴム（以下「FKM」と記す）は、耐熱
性、耐薬品性、耐老化性等に優れる上、さらに耐
燃料油性、耐油性等にも優れているため、自動車
用燃料ホースやダイヤフラム等の素材として注目
されているが、コストが汎用ゴムに比べて高価な
ためその用途が限定されている。例えば、燃料ホ
ース等の素材に使用する場合には、耐油性の比較
的良好なアクリロニトリル−ブタジエンゴム（以
下「NBR」と記す）配合物層を基体層とし、よ
り高度な耐燃料油性等が必要とされる側にFKM
配合物を加硫接着して使用される。
（発明が解決しようとする問題点）
しかしながら、近年、自動車産業の発展は著し
く、車の排気ガス対策等に伴う燃料の高圧化、高
温化により、エンジンルーム内は非常に幅広い温
度変化をし、特に上限温度が車種によつては150
℃程度にまで上昇し、さらに燃料は高温にて酸化
されたガソリン（サワーガソリン）となつて循環
される。
従つて、燃料ホース等には、前記基体層により
高度な耐熱性が要求されている。かかる事情か
ら、基体層としては、アクリルゴム（以下
「ACM」と記す）の使用が考えられる。しかしな
がら、エチレン−酢酸ビニル−アルキルアクリレ
ート三元共重合体、エチレン−アルキルアクリレ
ート共重合体等の従来公知の一般のACMは耐熱
性に満足するものの、耐油性に劣り、基体層とし
て用いるにしても実用上問題がある。また、
ACMを使用するにあたつてはFKM配合物層との
加硫接着性の問題、さらにはFKM配合物との接
着性の点で比較的良好な接着性を示すアミン系加
硫剤によつて、FKM配合物が早期に劣化すると
いう問題がある。
本発明は、かかる事情に基づいて発明されたも
のであつて、耐熱温度150℃を満足する耐熱性に
優れ且つ耐燃料油性にも優れたゴム積層体、即
ち、特定のFKM配合物層と特定のACM配合物層
とからなる両層の直接加硫接着性に優れ且つ
FKM配合物層の劣化のないゴム積層体を提供す
ることを目的とするものである。
（解決手段）
本発明のゴム積層体は、FKM配合物層とACM
配合物層とからなり、FKM配合物層をポリオー
ル加硫したFKM配合物にて構成すると共に、
ACM配合物層をエチレン、酢酸ビニルならびに
下式（）で示されるアルキルアクリレートおよ
び下式（）で示されるアルコキシアルキルアク
リレートを共重合体成分としたACMに加硫剤と
してグアニジン化合物を該ACM100重量部に対し
て１〜６重量部配合してなるACM配合物にて構
成したことを特徴とする。
() CH2＝CHCOOR1
（R1は炭素数３〜８のアルキル基）
() CH2＝CHCOO−R2−Ｏ−R3
（R2は炭素数１〜４のアルキレン基、R3は炭素
数１〜４のアルキル基又はアルコキシアルキル
基）
本発明のFKM配合物層は、四フツ化エチレン
−プロピレン共重合体、フツ化ビニリデン−六フ
ツ化プロピレン共重合体、フツ化ビニリデン−六
フツ化プロピレン−四フツ化エチレン三元共重合
体等のFKMにポリオール加硫剤が金属酸化物等
の副資材と共に混合されたゴム配合物からなる。
FKMの中で耐アルコール添加ガソリン（ガソー
ル）性に優れたものとしては、フツ化ビニリデン
−六フツ化プロピレン−四フツ化エチレン三元共
重合体があげられる。
ポリオール加硫剤としては、ハイドロキノン、
ビスフェノールＡ等の芳香族ジオールが用いら
れ、かかる加硫剤に第４級アンモニウム塩又はホ
スフィン化合物等の助剤が併用される。ポリオー
ル加硫剤と助剤の配合量は、FKM100重量部に対
して、各々１〜３重量部と1.5〜５重量部である。
上記加硫剤と共にFKMに配合する副資材とし
ては、受酸剤、補強剤、可塑剤、加工助剤等が必
要に応じ適宜混合されて用いられる。
一方、本発明のACM配合物層は、前記した如
きエチレン−酢酸ビニル−アルキルアクリレート
−アルコキシアルキルアクリレート四元共重合体
に加硫剤としてグアニジン化合物を前記の如く特
定量配合してなるゴム配合物からなる。
上記アルキルアクリレートの具体例としては、
ｎ−ブチルアクリレート、ｎ−ヘキシルアクリレ
ート、ｎ−オクチルアクリレート、２−エチル−
ヘキシル−アクリレート等があげられる。また、
アルコキシアルキルアクリレートの具体例として
は、メトキシエチルアクリレート、メトキシメチ
ルアクリレート、エトキシエチルアクリレート、
ブトキシエチルアクリレート、メトキシエトキシ
エチルアクリレート、エトキシエトキシエチルア
クリレート等があげられる。
アルキルアクリレートは、ACM配合物の耐熱
性の改善に効果的であり、アルコキシアルキルア
クリレートは、ACM配合物の耐油性の改善に効
果的であり、本発明のゴム積層体の基体層として
の要求特性を満たすためには、アルキルアクリレ
ートは25〜55重量％、アルコキシアルキルアクリ
レートは55〜25重量％を共重合体成分として含有
することが好ましい。
上記ACMの加硫剤としては、他層を構成する
FKM配合物との直接加硫接着性を考慮し、種々
のアミン系加硫剤の中からグアニジン化合物が選
択的に用いられる。そして、かかるグアニジン化
合物のACMに対する配合量は、FKMとの直接加
硫接着性およびFKMの劣化性を考慮し、
ACM100重量部に対して１〜６重量部用いられ
る。グアニジン化合物の配合量が上記範囲より少
ないと直接加硫剤接着性に劣り、上記範囲より多
いとFKMを劣化させる度合が顕著になり好まし
くない。
ACMには、上記加硫剤以外に補強剤、軟化剤
等の副資材が適宜混合される。
本発明のゴム積層体は、上記の如くポリオール
加硫したFKM配合物層と、特定のACM配合物層
とを直接加硫接着して構成することによつてのみ
所期の目的を達成することができるのであつて、
FKM配合物層を過酸化物加硫等の他の加硫系に
よつて構成したFKM配合物を用いたり、あるい
はACM配合物層を一般のACMを用いて構成した
り、あるいはまたACM配合物層をグアニジン化
合物以外の他のアミン系加硫剤を用いて加硫した
ACM配合物又はグアニジン化合物を上記範囲外
の量を配合して加硫したACM配合物によつて構
成した場合には、目的は達せられない。
尚、本発明のゴム積層体は、上記各ゴム配合物
をシート状に成形し、これらを重ねて加硫接着し
て得られる。また、このゴム積層体は、ホース等
の場合には、押出機により２層同時押出しするな
どして成形することもできる。加硫条件は、温度
150〜180℃、時間15〜90分が一般に用いられ、必
要に応じ２次加硫を行なうこともできる。
（実施例）
次に、本発明の実施例を比較例と共に示す。
本発明の実施例および比較例におけるゴム配合
は表−１，２，３，４による。
テストピースは、FKM配合物、ACM配合物、
NBR配合物およびCSM配合物を各々２mmのシー
ト状にロール分出したものを表−５に示す如き組
合せにて重ね、160℃×30分、4.5Kg／cm2で加圧加
硫して作成した。
各種試験方法は以下の通りである。結果を表−
５に示す。
(1) 層間接着力……JIS Ｋ−6301準拠
初期接着力
熱老化後接着力（175℃×70時間熱劣化）
(2) 各層の劣化性
積層体を２枚の鉄板間にサンドイツチし、耐
熱温度150℃を評価するための促進劣化として
175℃×70時間熱老化後、積層体を取出し、サ
ンプルを直径50mmのマンドレルに巻きつけ、そ
の後各層のクラツクの発生状況等の劣化状況を
調べた。表−５では、劣化のあるものは×印、
異常なきものは○印で表示した。
(3) 耐油性
FKM配合物層に積層する各種基体層自身の
耐油性を調べるため、JIS Ｋ−6301に準拠し、
FuelC浸漬（40℃×72時間）後の体積変化率△
（％）を測定した。
(Industrial Application Field) The present invention relates to a rubber laminate formed by directly vulcanizing and adhering a fluororubber compound layer and an acrylic rubber compound layer, which is suitably used as a material for automobile fuel hoses and the like. (Prior art) Fluororubber (hereinafter referred to as "FKM") has excellent heat resistance, chemical resistance, aging resistance, etc., and also has excellent fuel oil resistance and oil resistance, so it is used as a fuel for automobiles. It is attracting attention as a material for hoses, diaphragms, etc., but its uses are limited because it is more expensive than general-purpose rubber. For example, when used in materials such as fuel hoses, the base layer is a compound layer of acrylonitrile-butadiene rubber (hereinafter referred to as "NBR"), which has relatively good oil resistance, and higher fuel oil resistance is required. FKM to the alleged party
It is used by vulcanizing and adhering the compound. (Problem to be solved by the invention) However, in recent years, the automobile industry has developed significantly, and due to the increase in pressure and temperature of fuel due to measures such as measures against car exhaust gas, the temperature inside the engine compartment is subject to a wide range of temperature changes. In particular, the upper limit temperature is 150 depending on the car model.
The temperature rises to about 30°F (°C), and the fuel is further circulated as gasoline that has been oxidized at high temperatures (sour gasoline). Therefore, fuel hoses and the like are required to have higher heat resistance from the base layer. Under these circumstances, it is conceivable to use acrylic rubber (hereinafter referred to as "ACM") as the base layer. However, although conventionally known general ACMs such as ethylene-vinyl acetate-alkyl acrylate terpolymer and ethylene-alkyl acrylate copolymer are satisfactory in heat resistance, they are inferior in oil resistance, and even when used as a base layer. There are practical problems. Also,
When using ACM, there are problems with vulcanization adhesion with the FKM compound layer, and furthermore, due to the amine-based vulcanizing agent, which shows relatively good adhesion with the FKM compound layer. , there is a problem that FKM formulations deteriorate prematurely. The present invention was invented based on the above circumstances, and is a rubber laminate that has excellent heat resistance that satisfies a heat resistance temperature of 150°C and also has excellent fuel oil resistance. It has excellent direct vulcanization adhesion of both layers and the ACM compound layer.
The object is to provide a rubber laminate in which the FKM compound layer does not deteriorate. (Solution Means) The rubber laminate of the present invention has a FKM compound layer and an ACM compound layer.
The FKM compound layer is composed of a polyol-cured FKM compound, and
The ACM compound layer is made of ACM containing ethylene, vinyl acetate, and an alkyl acrylate represented by the following formula () and an alkoxyalkyl acrylate represented by the following formula () as copolymer components, and 100 parts by weight of the ACM is mixed with a guanidine compound as a vulcanizing agent. It is characterized by being composed of an ACM compound containing 1 to 6 parts by weight of ACM. () CH 2 = CHCOOR 1 (R 1 is an alkyl group having 3 to 8 carbon atoms) () CH 2 = CHCOO−R 2 −O−R 3 (R 2 is an alkylene group having 1 to 4 carbon atoms, R 3 is an alkylene group having 1 to 4 carbon atoms, (alkyl group or alkoxyalkyl group having 1 to 4 carbon atoms) The FKM compound layer of the present invention contains ethylene tetrafluoride-propylene copolymer, vinylidene fluoride-propylene hexafluoride copolymer, vinylidene fluoride-propylene hexafluoride copolymer, It consists of a rubber compound in which a polyol vulcanizing agent is mixed with FKM such as a propylene difluoride-tetrafluoroethylene terpolymer along with auxiliary materials such as metal oxides.
Among FKMs, vinylidene fluoride-propylene hexafluoride-ethylene tetrafluoride terpolymer is cited as one having excellent resistance to alcohol-added gasoline (gasol). As polyol vulcanizing agents, hydroquinone,
An aromatic diol such as bisphenol A is used, and an auxiliary agent such as a quaternary ammonium salt or a phosphine compound is used in combination with the vulcanizing agent. The blending amounts of the polyol vulcanizing agent and the auxiliary agent are 1 to 3 parts by weight and 1.5 to 5 parts by weight, respectively, based on 100 parts by weight of FKM. As auxiliary materials to be mixed into FKM together with the above-mentioned vulcanizing agent, acid acceptors, reinforcing agents, plasticizers, processing aids, etc. are mixed as appropriate and used. On the other hand, the ACM compound layer of the present invention is a rubber compound obtained by blending a specific amount of a guanidine compound as a vulcanizing agent with the ethylene-vinyl acetate-alkyl acrylate-alkoxyalkyl acrylate quaternary copolymer as described above. Consisting of Specific examples of the above alkyl acrylate include:
n-butyl acrylate, n-hexyl acrylate, n-octyl acrylate, 2-ethyl-
Examples include hexyl acrylate. Also,
Specific examples of alkoxyalkyl acrylate include methoxyethyl acrylate, methoxymethyl acrylate, ethoxyethyl acrylate,
Examples include butoxyethyl acrylate, methoxyethoxyethyl acrylate, ethoxyethoxyethyl acrylate, and the like. Alkyl acrylates are effective in improving the heat resistance of ACM formulations, and alkoxyalkyl acrylates are effective in improving oil resistance of ACM formulations, which are characteristics required for the base layer of the rubber laminate of the present invention. In order to satisfy this requirement, it is preferable that the copolymer component contains 25 to 55% by weight of alkyl acrylate and 55 to 25% by weight of alkoxyalkyl acrylate. As the vulcanizing agent of the above ACM, it constitutes other layers.
Considering the direct vulcanization adhesion with the FKM compound, guanidine compounds are selectively used from among various amine-based vulcanizing agents. The amount of the guanidine compound added to ACM is determined by considering the direct vulcanization adhesion with FKM and the deterioration of FKM.
It is used in an amount of 1 to 6 parts by weight per 100 parts by weight of ACM. If the amount of the guanidine compound is less than the above range, the direct adhesion to the vulcanizing agent will be poor, and if it is more than the above range, the degree of deterioration of FKM will be significant, which is not preferable. In addition to the above-mentioned vulcanizing agent, auxiliary materials such as a reinforcing agent and a softening agent are appropriately mixed into the ACM. The rubber laminate of the present invention achieves the intended purpose only by directly vulcanizing and adhering the polyol-cured FKM compound layer and the specific ACM compound layer as described above. Because it is possible to
The FKM compound layer may be composed of another vulcanization system such as peroxide vulcanization, or the ACM compound layer may be composed of general ACM; The layer was vulcanized using other amine-based vulcanizing agents other than guanidine compounds.
If the composition is composed of an ACM compound or an ACM compound which is vulcanized with a guanidine compound in an amount outside the above range, the objective will not be achieved. The rubber laminate of the present invention is obtained by molding each of the above-mentioned rubber compounds into a sheet shape, stacking them together, and vulcanizing and adhering them. In addition, in the case of a hose or the like, this rubber laminate can also be molded by simultaneously extruding two layers using an extruder. Vulcanization conditions are temperature
A temperature of 150 to 180°C and a time of 15 to 90 minutes are generally used, and secondary vulcanization can be performed if necessary. (Example) Next, examples of the present invention will be shown together with comparative examples. Rubber formulations in Examples and Comparative Examples of the present invention are as shown in Tables 1, 2, 3, and 4. The test pieces were FKM compound, ACM compound,
The NBR compound and the CSM compound were each rolled into 2 mm sheets, stacked in the combinations shown in Table 5, and vulcanized under pressure at 4.5 kg/cm 2 at 160°C for 30 minutes. did. Various test methods are as follows. Display the results -
5. (1) Interlayer adhesion strength: JIS K-6301 compliant Initial adhesion strength Adhesion strength after heat aging (175℃ x 70 hours heat deterioration) (2) Degradability of each layer The laminate was sandwiched between two iron plates and heat resistant. As accelerated deterioration for evaluating temperature 150℃
After heat aging at 175°C for 70 hours, the laminate was taken out, the sample was wound around a mandrel with a diameter of 50 mm, and the state of deterioration such as the occurrence of cracks in each layer was then examined. In Table 5, items with deterioration are marked with an
Items with no abnormalities are marked with an ○. (3) Oil resistance In order to examine the oil resistance of the various base layers themselves that are laminated on the FKM compound layer, in accordance with JIS K-6301,
Volume change rate △ after FuelC immersion (40℃ x 72 hours)
(%) was measured.
【表】【table】
【表】【table】
【表】【table】
【表】【table】
【表】【table】
【表】【table】
【表】【table】
【表】【table】
【表】
（発明の効果）
以上説明した如き本発明のゴム積層体によれ
ば、ポリオール加硫した特定のFKM配合物層と、
これに積層せしめる基体層を、特殊なACMを用
い且つ該ACMに特定量のグアニジン化合物を配
合して加硫した特定のACM配合物にて構成した
ので、両層の直接加硫接着性は優れ且つACM配
合物層によるFKM配合物層の劣化は阻止され、
さらに、基体層が上記の如き特定のACM配合物
にて構成されているので、耐熱性に加え耐油性と
のバランスのとれた基体層が形成されることにな
り、従来のNBR、CSMさらには一般のACM配
合物を基体層として用いた場合では達成すること
ができなかつた、耐熱温度150℃といつた従来に
はない過酷な条件下においても耐え得る耐熱性お
よび耐熱料油性に優れたゴム積層体が得られる。[Table] (Effects of the invention) According to the rubber laminate of the present invention as explained above, a specific FKM compound layer vulcanized with polyol,
Since the base layer to be laminated on this is made of a special ACM and a specific ACM compound that is vulcanized by blending a specific amount of guanidine compound into the ACM, the direct vulcanization adhesion of both layers is excellent. and the deterioration of the FKM compound layer by the ACM compound layer is prevented,
Furthermore, since the base layer is composed of the specific ACM compound as mentioned above, a base layer with a well-balanced oil resistance in addition to heat resistance is formed. A rubber with excellent heat resistance and oil resistance that can withstand unprecedentedly harsh conditions such as a heat resistance temperature of 150℃, which could not be achieved when using a general ACM compound as the base layer. A laminate is obtained.
Claims (1)
とを直接加硫接着してなるゴム積層体において、 フツ素ゴム配合物層をポリオール加硫したフツ
素ゴム配合物にて構成すると共に、アクリルゴム
配合物層をエチレン、酢酸ビニルならびに下式
（）で示されるアルキルアクリレートおよび下
式（）で示されるアルコキシアルキルアクリレ
ートを共重合体成分としたアクリルゴムに加硫剤
としてグアニジン化合物を該アクリルゴム100重
量部に対して１〜６重量部配合してなるアクリル
ゴム配合物にて構成したことを特徴とするゴム積
層体。 () CH2＝CHCOOR1 （R1は炭素数３〜８のアルキル基） () CH2＝CHCOO−R2−Ｏ−R3 （R2は炭素数１〜４のアルキレン基、R3は炭素
数１〜４のアルキル基又はアルコキシアルキル
基） ２ アクリルゴム中のアルキルアクリレート成分
が25〜55重量％、アルコキシアルキルアクリレー
ト成分が55〜25重量％である特許請求の範囲第１
項記載のゴム積層体。[Scope of Claims] 1. In a rubber laminate formed by directly vulcanizing and adhering a fluororubber compound layer and an acrylic rubber compound layer, the fluororubber compound layer is made of a polyol-vulcanized fluororubber compound. At the same time, the acrylic rubber compound layer is made of acrylic rubber containing ethylene, vinyl acetate, alkyl acrylate represented by the following formula (), and alkoxyalkyl acrylate represented by the following formula () as a vulcanizing agent. 1. A rubber laminate comprising an acrylic rubber compound containing 1 to 6 parts by weight of a guanidine compound based on 100 parts by weight of the acrylic rubber. () CH 2 = CHCOOR 1 (R 1 is an alkyl group with 3 to 8 carbon atoms) () CH 2 = CHCOO-R 2 -O-R 3 (R 2 is an alkylene group with 1 to 4 carbon atoms, R 3 is an alkylene group with 1 to 4 carbon atoms, (alkyl group or alkoxyalkyl group having 1 to 4 carbon atoms) 2 The content of the alkyl acrylate component in the acrylic rubber is 25 to 55% by weight, and the content of the alkoxyalkyl acrylate component is 55 to 25% by weight, Claim 1
Rubber laminate described in Section 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1039885A JPS61169243A (en) | 1985-01-22 | 1985-01-22 | Rubber laminate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1039885A JPS61169243A (en) | 1985-01-22 | 1985-01-22 | Rubber laminate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61169243A JPS61169243A (en) | 1986-07-30 |
| JPH0428222B2 true JPH0428222B2 (en) | 1992-05-13 |
Family
ID=11749025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1039885A Granted JPS61169243A (en) | 1985-01-22 | 1985-01-22 | Rubber laminate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61169243A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2801156C (en) | 2010-06-09 | 2018-06-05 | Denki Kagaku Kogyo Kabushiki Kaisha | Laminate and vulcanized product thereof |
-
1985
- 1985-01-22 JP JP1039885A patent/JPS61169243A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61169243A (en) | 1986-07-30 |
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