JP2009279763A - Method for producing rubber vibration insulator and rubber vibration insulator - Google Patents

Method for producing rubber vibration insulator and rubber vibration insulator Download PDF

Info

Publication number
JP2009279763A
JP2009279763A JP2008131073A JP2008131073A JP2009279763A JP 2009279763 A JP2009279763 A JP 2009279763A JP 2008131073 A JP2008131073 A JP 2008131073A JP 2008131073 A JP2008131073 A JP 2008131073A JP 2009279763 A JP2009279763 A JP 2009279763A
Authority
JP
Japan
Prior art keywords
rubber
vibration
polymer film
producing
proof
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
Application number
JP2008131073A
Other languages
Japanese (ja)
Inventor
Norio Minochi
則夫 箕内
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.)
Toyo Tire Corp
Original Assignee
Toyo Tire and Rubber 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 Toyo Tire and Rubber Co Ltd filed Critical Toyo Tire and Rubber Co Ltd
Priority to JP2008131073A priority Critical patent/JP2009279763A/en
Publication of JP2009279763A publication Critical patent/JP2009279763A/en
Pending legal-status Critical Current

Links

Landscapes

  • Vibration Prevention Devices (AREA)
  • Springs (AREA)
  • Laminated Bodies (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing a rubber vibration insulator which is improved in heat resistance without declining vibration isolation performance and durability and the rubber vibration insulator. <P>SOLUTION: The method for producing the rubber vibration insulator includes the sticking process in which a polymer film having an oxygen permeability coefficient of 1(cm<SP>3</SP>×0.1 mm)/(m<SP>2</SP>×24 h×atm) or below is stuck on the vulcanized rubber surface of a rubber composition containing a rubber component containing natural rubber as the main component. The surface of the polymer film is preferably subjected to corona discharge treatment or plasma treatment. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、防振ゴムの製造方法及び防振ゴムに関し、特に自動車用エンジンマウント等の防振部材として好適に用いることができる防振ゴムの製造方法及び防振ゴムに関するものである。   The present invention relates to a vibration-proof rubber manufacturing method and vibration-proof rubber, and more particularly to a vibration-proof rubber manufacturing method and vibration-proof rubber that can be suitably used as a vibration-proof member for automobile engine mounts and the like.

一般に、自動車にはエンジンや車体の振動を吸収し、乗り心地の向上や騒音を防止するための防振ゴムが用いられている。特に、自動車のエンジンルームや排気系等に使用されるエンジンマウント等の防振ゴムでは、近年のエンジンの高出力化等に伴い、高い耐熱性を要求されるようになってきている。   In general, an anti-vibration rubber is used for an automobile to absorb vibrations of an engine and a vehicle body to improve riding comfort and prevent noise. In particular, anti-vibration rubbers such as engine mounts used in engine rooms and exhaust systems of automobiles are required to have high heat resistance with the recent increase in engine output.

一般に防振ゴムのゴム成分としては、天然ゴム、又は天然ゴムとジエン系合成ゴムとのブレンドが用いられている。しかし、天然ゴムは主鎖に二重結合を有し、さらに硫黄架橋により硬化させているため、防振ゴムとして使用した場合、熱的劣化、酸化劣化あるいはオゾン劣化に起因して耐熱性が経時的に悪化する場合がある。   Generally, natural rubber or a blend of natural rubber and diene synthetic rubber is used as the rubber component of the vibration-proof rubber. However, natural rubber has a double bond in the main chain and is further cured by sulfur cross-linking, so when used as an anti-vibration rubber, the heat resistance will deteriorate over time due to thermal degradation, oxidation degradation, or ozone degradation. May get worse.

ここで、天然ゴムを主成分とするゴム成分を含有するゴム組成物の加硫ゴムの耐熱性を向上する技術としては、ゴム組成物中の硫黄量を減らし加硫促進剤を多く配合して加硫する方法(以下、「EV方式」という(EV;Efficient Vulcanization))、耐熱性に有利な高分子老化防止剤や老化防止剤を組み合わせてゴム組成物中に配合する方法、あるいは耐オゾン性の向上に寄与するWAXをゴム組成物中に配合する方法により、その加硫ゴムの耐熱性を向上する技術が知られている。   Here, as a technique for improving the heat resistance of a vulcanized rubber of a rubber composition containing a rubber component containing natural rubber as a main component, the amount of sulfur in the rubber composition is reduced and a large amount of a vulcanization accelerator is blended. A method of vulcanization (hereinafter referred to as “EV method”), a method of blending a polymer anti-aging agent or an anti-aging agent advantageous in heat resistance into a rubber composition, or ozone resistance A technique for improving the heat resistance of a vulcanized rubber by a method of adding WAX that contributes to improvement in the rubber composition to the rubber composition is known.

しかし、EV方式では加硫ゴムの耐久性が悪化する場合があり、さらに老化防止剤を組み合わせてゴム組成物中に配合する方法やWAXをゴム組成物中に配合する方法によっても、耐熱性の改良効果が不十分な場合がある。   However, in the EV system, the durability of the vulcanized rubber may be deteriorated. Further, the heat resistance can be improved by a method of blending an anti-aging agent in a rubber composition or a method of blending WAX in a rubber composition. The improvement effect may be insufficient.

下記特許文献1では、エチレン・α−オレフィン・ジエン共重合体ゴム(以下、「EPDMゴム」という)を主成分とするゴム成分を含有するゴム組成物を使用することにより、防振ゴムの耐熱性を向上することが記載されている。しかし、EPDMを含有する防振ゴムは防振性能(動倍率)が悪化する場合があり、加えて、特に高温にて長時間使用された場合、ゴムのき裂が発生し易く、防振ゴムの耐久性が悪化する場合がある。このように、防振ゴムにおいては、防振性能及び耐久性を低下することなく、熱等による劣化を抑制し、耐熱性を向上することは非常に困難であった。
特開平05−86236号公報
In the following Patent Document 1, by using a rubber composition containing a rubber component mainly composed of ethylene / α-olefin / diene copolymer rubber (hereinafter referred to as “EPDM rubber”), the heat resistance of the vibration-proof rubber is reduced. It is described to improve the property. However, the anti-vibration rubber containing EPDM may deteriorate the anti-vibration performance (dynamic magnification). In addition, when used at a high temperature for a long time, the rubber is liable to crack. The durability may deteriorate. As described above, it is very difficult for the vibration-proof rubber to suppress the deterioration due to heat and the like and improve the heat resistance without lowering the vibration-proof performance and durability.
JP 05-86236 A

本発明の目的は、防振性能及び耐久性を低下することなく耐熱性を向上した防振ゴムの製造方法及び防振ゴムを提供することにある。   An object of the present invention is to provide a vibration-proof rubber manufacturing method and a vibration-proof rubber that have improved heat resistance without reducing vibration-proof performance and durability.

本発明者らは、上記課題を解決すべく鋭意検討した結果、以下に示す防振ゴムの製造方法により上記目的を達成できることを見出し、本発明を完成するに至った。   As a result of intensive studies to solve the above-mentioned problems, the present inventors have found that the above object can be achieved by the following method for producing a vibration-proof rubber, and have completed the present invention.

すなわち、本発明に係る防振ゴムの製造方法は、天然ゴムを主成分とするゴム成分を含有するゴム組成物の加硫ゴム表面に酸素透過係数が1(cm・0.1mm)/(m・24h・atm)以下である高分子フィルムを貼付する貼付工程を含むことを特徴とする。 That is, in the method for producing a vibration-proof rubber according to the present invention, the oxygen transmission coefficient is 1 (cm 3 · 0.1 mm) / (on the vulcanized rubber surface of a rubber composition containing a rubber component mainly composed of natural rubber. m 2 · 24h · atm) or less, including a sticking step of sticking a polymer film.

本発明に係る防振ゴムの製造方法では、天然ゴムを主成分とするゴム成分を含有するゴム組成物の加硫ゴムを防振ゴムとするため、天然ゴム本来の防振性能及び耐久性を損なうことがない。一方、天然ゴムを主成分とするゴム成分を含有するゴム組成物の加硫ゴムを防振ゴムとすると、その耐熱性が経時的に悪化する場合があるが、本発明に係る防振ゴムの製造方法では、加硫ゴム表面に酸素透過係数が1(cm・0.1mm)/(m・24h・atm)以下である高分子フィルムを貼付する貼付工程を含むことにより、特に防振ゴムの酸化劣化を抑制することができる。その結果、本発明に係る防振ゴムの製造方法では、防振性能及び耐久性を低下することなく耐熱性に優れた防振ゴムを製造することができる。 In the method for producing vibration-proof rubber according to the present invention, the vulcanized rubber of the rubber composition containing the rubber component mainly composed of natural rubber is used as the vibration-proof rubber. There is no loss. On the other hand, when the vulcanized rubber of the rubber composition containing a rubber component mainly composed of natural rubber is used as an anti-vibration rubber, its heat resistance may deteriorate over time. In the manufacturing method, by including a sticking step of sticking a polymer film having an oxygen permeability coefficient of 1 (cm 3 · 0.1 mm) / (m 2 · 24 h · atm) or less on the surface of the vulcanized rubber, it is particularly vibration-proof. Oxidative deterioration of rubber can be suppressed. As a result, the vibration-proof rubber manufacturing method according to the present invention can manufacture a vibration-proof rubber excellent in heat resistance without deteriorating the vibration-proof performance and durability.

上記において、前記高分子フィルムがコロナ放電処理又はプラズマ処理したものであることが好ましい。かかる製造方法によれば、コロナ放電処理又はプラズマ処理した高分子フィルムを使用することにより、接着剤を使用しなくても、加硫ゴム表面に高分子フィルムを物理的に貼付することができる。その結果、接着剤に起因する防振性能、耐熱性及び耐久性の低下を抑制した防振ゴムを製造することができる。   In the above, it is preferable that the polymer film is subjected to corona discharge treatment or plasma treatment. According to this manufacturing method, by using a corona discharge-treated or plasma-treated polymer film, the polymer film can be physically attached to the vulcanized rubber surface without using an adhesive. As a result, it is possible to produce an anti-vibration rubber that suppresses a decrease in anti-vibration performance, heat resistance and durability caused by the adhesive.

上記において、前記貼付工程が、天然ゴムを主成分とするゴム成分を含有するゴム組成物の加硫工程時に前記高分子フィルムを貼付する工程であることが好ましい。かかる製造方法によれば、加硫工程時に高分子フィルムを貼付するため、防振ゴムの製造工程が短縮化され、防振ゴムの生産性が向上すると共に、成形・加硫時における金型とゴムとの押圧力を利用して、加硫ゴムの表面形状に沿って容易にかつ確実に高分子フィルムを貼付することができる。   In the above, it is preferable that the said sticking process is a process of sticking the said polymer film at the time of vulcanization | cure of the rubber composition containing the rubber component which has a natural rubber as a main component. According to such a manufacturing method, since the polymer film is attached during the vulcanization process, the manufacturing process of the anti-vibration rubber is shortened, and the productivity of the anti-vibration rubber is improved. The polymer film can be easily and reliably attached along the surface shape of the vulcanized rubber using the pressing force with the rubber.

別の本発明に係る防振ゴムは、天然ゴムを主成分とするゴム成分を含有するゴム組成物の加硫ゴム表面に酸素透過係数が1(cm・0.1mm)/(m・24h・atm)以下である高分子フィルム層を有することを特徴とする。かかる防振ゴムは、天然ゴムを主成分とするゴム成分を含有するゴム組成物の加硫ゴムを使用するものであるため、天然ゴム本来の防振性能及び耐久性を損なうことがない。一方、天然ゴムを主成分とするゴム成分を含有するゴム組成物の加硫ゴムを防振ゴムとすると、その耐熱性が経時的に悪化する場合があるが、かかる防振ゴムではゴム表面に酸素透過係数が1(cm・0.1mm)/(m・24h・atm)以下である高分子フィルム層を有するため、特にゴムの酸化劣化を抑制することができる。その結果、本発明に係る防振ゴムでは、その防振性能及び耐久性が良好に保持され、かつ耐熱性が優れたものとなる。 Another vibration-proof rubber according to the present invention has an oxygen permeability coefficient of 1 (cm 3 · 0.1 mm) / (m 2 · on the vulcanized rubber surface of a rubber composition containing a rubber component containing natural rubber as a main component. 24 h · atm) or less of the polymer film layer. Such an anti-vibration rubber uses a vulcanized rubber of a rubber composition containing a rubber component mainly composed of natural rubber, and therefore does not impair the natural anti-vibration performance and durability of natural rubber. On the other hand, when the vulcanized rubber of the rubber composition containing a rubber component mainly composed of natural rubber is used as a vibration-proof rubber, its heat resistance may deteriorate over time. Since it has a polymer film layer having an oxygen permeability coefficient of 1 (cm 3 · 0.1 mm) / (m 2 · 24 h · atm) or less, oxidative deterioration of rubber can be particularly suppressed. As a result, the anti-vibration rubber according to the present invention has good anti-vibration performance and durability and excellent heat resistance.

本発明に係る防振ゴムの製造方法においては、天然ゴムを主成分とするゴム成分、すなわちゴム成分中の天然ゴムが50%以上であるゴム成分、好ましくはゴム成分中の天然ゴムが80%以上であるゴム成分を含有するゴム組成物の加硫ゴムを使用する。天然ゴムに加えてブレンドすることができるゴムとしては、例えばポリイソプレンゴム、ポリブタジエンゴム、スチレンブタジエンゴム、ブチルゴム、アクリルニトリルブタジエンゴム、クロロプレンゴム等が挙げられる。かかるゴムは1種又は2種以上をブレンドしても良い。   In the method for producing an anti-vibration rubber according to the present invention, a rubber component mainly composed of natural rubber, that is, a rubber component in which the natural rubber in the rubber component is 50% or more, preferably 80% of the natural rubber in the rubber component The vulcanized rubber of the rubber composition containing the rubber component as described above is used. Examples of rubbers that can be blended in addition to natural rubber include polyisoprene rubber, polybutadiene rubber, styrene butadiene rubber, butyl rubber, acrylonitrile butadiene rubber, and chloroprene rubber. Such rubber may be used alone or in combination of two or more.

本発明に係る防振ゴムの製造方法において使用するゴム組成物中には、かかるゴム成分以外に硫黄、カーボンブラック、加硫促進剤、老化防止剤、加硫促進助剤、加硫遅延剤、シリカ、シランカップリング剤、酸化亜鉛、ステアリン酸、ワックスやオイル等の軟化剤、加工助剤等の通常ゴム工業で使用される配合剤を、本発明の効果を損なわない範囲において適宜配合し用いることができる。   In the rubber composition used in the production method of the vibration-proof rubber according to the present invention, in addition to the rubber component, sulfur, carbon black, vulcanization accelerator, anti-aging agent, vulcanization accelerator, vulcanization retarder, Compounding agents usually used in the rubber industry such as silica, silane coupling agents, zinc oxide, stearic acid, softeners such as wax and oil, processing aids, etc., are appropriately blended and used within a range not impairing the effects of the present invention. be able to.

硫黄は通常のゴム用硫黄であればよく、例えば粉末硫黄、沈降硫黄、不溶性硫黄、高分散性硫黄等を用いることができる。本発明に係る防振ゴムの製造方法において使用するゴム組成物における硫黄の含有量は、ゴム成分100重量部に対して0.1〜3重量部である。硫黄の含有量が0.1重量部未満であると、加硫ゴムの架橋密度が不足してゴム強度等が低下し、3重量部を超えると防振ゴムの耐熱性が悪化する。防振ゴムのゴム強度を良好に確保し、耐熱性をより向上するためには、硫黄の含有量がゴム成分100重量部に対して0.2〜1.5重量部であることが好ましく、0.4〜1重量部であることがより好ましい。   Sulfur should just be normal sulfur for rubber | gum, For example, powder sulfur, precipitated sulfur, insoluble sulfur, highly dispersible sulfur etc. can be used. The sulfur content in the rubber composition used in the method for producing a vibration-proof rubber according to the present invention is 0.1 to 3 parts by weight with respect to 100 parts by weight of the rubber component. If the sulfur content is less than 0.1 parts by weight, the crosslinking density of the vulcanized rubber is insufficient, resulting in a decrease in rubber strength and the like. In order to ensure good rubber strength of the vibration-proof rubber and to further improve heat resistance, the sulfur content is preferably 0.2 to 1.5 parts by weight with respect to 100 parts by weight of the rubber component, More preferably, it is 0.4 to 1 part by weight.

カーボンブラックとしては、例えばSAF、ISAF、HAF、FEF、GPF等が用いられる。カーボンブラックは、加硫後のゴムの硬度、補強性、低発熱性等のゴム特性を調整し得る範囲で使用することができる。本発明に係る防振ゴムの製造方法において使用するゴム組成物におけるカーボンブラックの配合量は、ゴム成分100重量部に対して10〜100重量部の範囲であり、好ましくは20〜75重量部である。この配合量が10重量部未満では、カーボンブラックの補強効果が充分に得られず、100重量部を超えると、発熱性、ゴム混合性及び加工時の作業性等が悪化する。   As carbon black, for example, SAF, ISAF, HAF, FEF, GPF and the like are used. Carbon black can be used within a range in which rubber properties such as hardness, reinforcement and low heat build-up of the rubber after vulcanization can be adjusted. The compounding amount of carbon black in the rubber composition used in the method for producing a vibration-proof rubber according to the present invention is in the range of 10 to 100 parts by weight, preferably 20 to 75 parts by weight with respect to 100 parts by weight of the rubber component. is there. If the blending amount is less than 10 parts by weight, the reinforcing effect of carbon black cannot be sufficiently obtained. If the blending amount exceeds 100 parts by weight, exothermic properties, rubber mixing properties, workability during processing, and the like are deteriorated.

加硫促進剤としては、ゴム加硫用として通常用いられる、スルフェンアミド系加硫促進剤、チウラム系加硫促進剤、チアゾール系加硫促進剤、チオウレア系加硫促進剤、グアニジン系加硫促進剤、ジチオカルバミン酸塩系加硫促進剤等の加硫促進剤を単独、又は適宜混合して使用しても良い。   As the vulcanization accelerator, sulfenamide vulcanization accelerator, thiuram vulcanization accelerator, thiazole vulcanization accelerator, thiourea vulcanization accelerator, guanidine vulcanization, which are usually used for rubber vulcanization. Vulcanization accelerators such as accelerators and dithiocarbamate vulcanization accelerators may be used alone or in admixture as appropriate.

老化防止剤としては、ゴム用として通常用いられる、芳香族アミン系老化防止剤、アミン−ケトン系老化防止剤、モノフェノール系老化防止剤、ビスフェノール系老化防止剤、ポリフェノール系老化防止剤、ジチオカルバミン酸塩系老化防止剤、チオウレア系老化防止剤等の老化防止剤を単独、又は適宜混合して使用しても良い。   As an anti-aging agent, an aromatic amine-based anti-aging agent, an amine-ketone-based anti-aging agent, a monophenol-based anti-aging agent, a bisphenol-based anti-aging agent, a polyphenol-based anti-aging agent, dithiocarbamic acid, which are usually used for rubber You may use antiaging agents, such as a salt type anti-aging agent and a thiourea type anti-aging agent, individually or in mixture as appropriate.

本発明に係る防振ゴムの製造方法において使用するゴム組成物は、ゴム成分、硫黄、カーボンブラック、加硫促進剤、老化防止剤、加硫促進助剤、加硫遅延剤、シリカ、シランカップリング剤、酸化亜鉛、ステアリン酸、ワックスやオイル等の軟化剤、加工助剤等を、バンバリーミキサー、ニーダー、ロール等の通常のゴム工業において使用される混練機を用いて混練りすることにより得られる。   The rubber composition used in the method for producing an anti-vibration rubber according to the present invention includes a rubber component, sulfur, carbon black, a vulcanization accelerator, an anti-aging agent, a vulcanization accelerator, a vulcanization retarder, silica, and a silane cup. Obtained by kneading softeners such as ring agents, zinc oxide, stearic acid, waxes and oils, processing aids, etc., using kneaders used in ordinary rubber industries such as Banbury mixers, kneaders, rolls, etc. It is done.

また、上記ゴム組成物における各成分の配合方法は特に限定されず、硫黄及び加硫促進剤等の加硫系成分以外の配合成分を予め混練してマスターバッチとし、残りの成分を添加してさらに混練する方法、各成分を任意の順序で添加し混練する方法、全成分を同時に添加して混練する方法等のいずれでもよい。   Further, the blending method of each component in the rubber composition is not particularly limited, and a blending component other than the vulcanization system component such as sulfur and a vulcanization accelerator is kneaded in advance to obtain a master batch, and the remaining components are added. Further, a kneading method, a method of adding and kneading each component in an arbitrary order, a method of adding all components simultaneously and kneading may be used.

本発明に係る防振ゴムの製造方法においては、上記ゴム組成物における各成分を混練し、成形加工した後、かかるゴム組成物を加硫した加硫ゴム表面に酸素透過係数が1(cm・0.1mm)/(m・24h・atm)以下である高分子フィルムを貼付する貼付工程を含むことを特徴とする。ここで、酸素透過係数は、JIS−K 7126に準じて測定した値であり、酸素透過係数が1(cm・0.1mm)/(m・24h・atm)以下である高分子フィルムとしては、例えば、ポリエステルフィルム、ポリエチレンテレフタレート(PET)フィルム、ポリ塩化ビニルフィルム、ポリ塩化ビニリデンフィルム、ポリクロロトリフロロエチレンフィルム、ポリスチレンフィルム、ポリエチレンフィルム、ポリプロピレンフィルム、ポリカーボネートフィルム、ポリアミドフィルム等が挙げられる。 In the method for producing an anti-vibration rubber according to the present invention, each component in the rubber composition is kneaded and molded, and then the oxygen permeability coefficient is 1 (cm 3) on the surface of the vulcanized rubber obtained by vulcanizing the rubber composition. · 0.1mm) / (m 2 · 24h · atm) comprise affixing step of affixing the at which the polymer film or less characterized. Here, the oxygen permeability coefficient is a value measured according to JIS-K 7126, and the oxygen permeability coefficient is 1 (cm 3 · 0.1 mm) / (m 2 · 24 h · atm) or less as a polymer film. Examples include polyester film, polyethylene terephthalate (PET) film, polyvinyl chloride film, polyvinylidene chloride film, polychlorotrifluoroethylene film, polystyrene film, polyethylene film, polypropylene film, polycarbonate film, polyamide film and the like.

上記フィルムの厚みは、0.1μm〜100μm、さらには1μm〜30μmとすることが好ましい。フィルムの厚みが0.1μm未満であると、防振ゴムの酸化劣化を抑制する効果が不十分となる場合があり、フィルムの厚みが100μmを超えると、フィルムの追従性が低下し、加えて防振性能が低下する場合がある。   The thickness of the film is preferably 0.1 μm to 100 μm, more preferably 1 μm to 30 μm. If the thickness of the film is less than 0.1 μm, the effect of suppressing the oxidative deterioration of the vibration-proof rubber may be insufficient, and if the thickness of the film exceeds 100 μm, the followability of the film is reduced. The anti-vibration performance may be reduced.

ここで、加硫ゴム表面に酸素透過係数が1(cm・0.1mm)/(m・24h・atm)以下である高分子フィルムを貼付する前に、高分子フィルムのフィルム表面をコロナ放電処理又はプラズマ処理すると、これらの処理によってフィルム表面に水酸基等の官能基が生成し、接着剤を使用しなくても、加硫ゴム表面に高分子フィルムを物理的に貼付することができる。 Here, before the polymer film having an oxygen permeability coefficient of 1 (cm 3 · 0.1 mm) / (m 2 · 24 h · atm) or less is applied to the vulcanized rubber surface, the film surface of the polymer film is corona-coated. When the discharge treatment or the plasma treatment is performed, a functional group such as a hydroxyl group is generated on the film surface by these treatments, and the polymer film can be physically attached to the vulcanized rubber surface without using an adhesive.

なお、加硫ゴム表面に酸素透過係数が1(cm・0.1mm)/(m・24h・atm)以下である高分子フィルムを貼付する貼付工程において、天然ゴムを主成分とするゴム成分を含有するゴム組成物の加硫工程時に高分子フィルムを貼付すると、成形・加硫時における金型とゴムとの押圧力を利用して、加硫ゴムの表面形状に沿って容易にかつ確実に高分子フィルムを貼付することができる。かかる貼付工程は、例えば、高分子フィルムを分割金型のゴムとの当接面に敷設し、金型を組み立てた後、ゴム組成物をインジェクション等により金型内に注入し、その後、所定の加硫温度にて成形・加硫することにより行うことができる。 In the pasting process of pasting a polymer film having an oxygen permeability coefficient of 1 (cm 3 · 0.1 mm) / (m 2 · 24 h · atm) or less on the surface of the vulcanized rubber, a rubber mainly composed of natural rubber When a polymer film is affixed during the vulcanization process of the rubber composition containing the components, the pressing force between the mold and the rubber during molding and vulcanization is used to easily and along the surface shape of the vulcanized rubber. A polymer film can be reliably attached. For example, the sticking step is performed by laying a polymer film on the contact surface of the split mold with the rubber and assembling the mold, and then injecting the rubber composition into the mold by injection or the like. It can be carried out by molding and vulcanization at the vulcanization temperature.

本発明に係る防振ゴムの製造方法により製造される防振ゴムは、防振性能及び耐久性が良好に保持され、かつ耐熱性が優れたものとなる。かかる防振ゴムは、エンジンマウント、トーショナルダンパー、ボディマウント、キャップマウント、メンバーマウント、ストラットマウント、マフラーマウント等の自動車用防振ゴムを始めとして、鉄道車両用防振ゴム、産業機械用防振ゴム、建築用免震ゴム、免震ゴム支承等の防振、免震ゴムに好適に用いることができ、特にエンジンマウント等の耐熱性を必要とする自動車用防振ゴムの構成部材として有用である。   The anti-vibration rubber produced by the method for producing an anti-vibration rubber according to the present invention has good anti-vibration performance and durability and excellent heat resistance. Such anti-vibration rubber includes anti-vibration rubber for automobiles such as engine mounts, torsional dampers, body mounts, cap mounts, member mounts, strut mounts, muffler mounts, anti-vibration rubbers for railway vehicles, and anti-vibration rubbers for industrial machinery. It can be used suitably for vibration isolation and isolation rubber for rubber, building isolation rubber, and isolation rubber bearings, and is particularly useful as a component of automotive isolation rubber that requires heat resistance such as engine mounts. is there.

以下に、この発明の実施例を記載してより具体的に説明する。なお、実施例等における評価項目は下記のようにして測定を行った。   Hereinafter, the present invention will be described in more detail with reference to examples. In addition, the evaluation item in an Example etc. measured as follows.

<耐久性>
金具をブラスト処理した後、接着剤(ケムロック205/220,ロード社製)を塗布して、2枚の金具で標準形状防振ゴムサンプル(長さ30mm,中心部の直径40mm)を挟んで接着・加硫して、サンプルとした。繰り返し歪みは±10%の一定圧縮歪みを与え、ゴムサンプルに亀裂が起こるまでの回数を測定した。
<Durability>
After the metal fittings are blasted, an adhesive (Chemlock 205/220, manufactured by Rhode) is applied and a standard shape anti-vibration rubber sample (length 30 mm, center diameter 40 mm) is sandwiched between the two metal fittings. -Vulcanized to give a sample. The cyclic strain gave a constant compressive strain of ± 10%, and the number of times until the rubber sample cracked was measured.

<加熱劣化後の耐久性>
上記標準形状防振ゴムサンプルを100℃で500時間加熱した後、かかるゴムサンプルを上記と同様の方法により耐久性を評価することで、加熱劣化後の耐久性を評価した。
<Durability after heat deterioration>
After the standard shape anti-vibration rubber sample was heated at 100 ° C. for 500 hours, the durability after the heat deterioration was evaluated by evaluating the durability of the rubber sample by the same method as described above.

(ゴム組成物の調製)
天然ゴム100重量部に対して、表1の配合処方に従い、実施例1〜4及び比較例1のゴム組成物を配合し、通常のバンバリーミキサーを用いて混練し、ゴム組成物を調整した。表1に記載の各配合剤を以下に示す。
a)天然ゴム RSS#3
b)硫黄 5%オイル処理硫黄
c)老化防止剤 N−フェニル−N’−(1,3−ジメチルブチル)−p−フェニレンジアミン(「ノクラック6C」、大内新興化学工業社製)
(Preparation of rubber composition)
The rubber compositions of Examples 1 to 4 and Comparative Example 1 were blended with 100 parts by weight of natural rubber according to the formulation of Table 1, and kneaded using a normal Banbury mixer to prepare a rubber composition. Each compounding agent described in Table 1 is shown below.
a) Natural rubber RSS # 3
b) Sulfur 5% oil-treated sulfur c) Anti-aging agent N-phenyl-N ′-(1,3-dimethylbutyl) -p-phenylenediamine (“NOCRACK 6C”, manufactured by Ouchi Shinsei Chemical Co., Ltd.)

d)加硫促進剤
(A)N−シクロヘキシル−2−ベンゾチアゾリルスルフェンアミド(「ノクセラーCZ−G(CZ)」、大内新興化学工業社製)
(B)チウラム化合物 テトラメチルチウラムジスルフィド(「ノクセラーTT−P(TT)」、大内新興化学工業社製)
d) Vulcanization accelerator
(A) N-cyclohexyl-2-benzothiazolylsulfenamide ("Noxeller CZ-G (CZ)", manufactured by Ouchi Shinsei Chemical Co., Ltd.)
(B) Thiuram compound Tetramethylthiuram disulfide ("Noxeller TT-P (TT)", manufactured by Ouchi Shinsei Chemical Co., Ltd.)

e)酸化亜鉛 3号亜鉛華
f)ステアリン酸 工業用ステアリン酸
g)ワックス ミクロクリスタリンワックス
e) Zinc oxide No. 3 zinc white f) Stearic acid Industrial stearic acid g) Wax Microcrystalline wax

(実施例、比較例)
実施例1
ポリエステルフィルム((酸素透過係数)=0.0018(cm・0.1mm)/(m・24h・atm)、フィルム厚み12μm)のゴムとの貼付表面をコロナ放電処理した。次に、かかるフィルムを分割金型のゴムとの当接面に敷設し、金型を組み立てた後、表1に記載のゴム組成物をインジェクションにより金型内に注入し、その後130℃にて40分加熱、加硫することにより、表面にポリエステルフィルム層を有する標準形状防振ゴムサンプルを作製して評価を行った。
(Examples and comparative examples)
Example 1
The surface of the polyester film ((oxygen transmission coefficient) = 0.018 (cm 3 · 0.1 mm) / (m 2 · 24 h · atm), film thickness 12 μm) with rubber was subjected to corona discharge treatment. Next, such a film is laid on the contact surface of the split mold with the rubber, and after assembling the mold, the rubber composition shown in Table 1 is injected into the mold by injection, and then at 130 ° C. By heating and vulcanizing for 40 minutes, a standard-shaped vibration-proof rubber sample having a polyester film layer on the surface was prepared and evaluated.

実施例2
高分子フィルムとして、PETフィルム((酸素透過係数)=0.018(cm・0.1mm)/(m・24h・atm)、フィルム厚み12μm)を使用した以外は、実施例1と同様の方法により標準形状防振ゴムサンプルを作製して評価を行った。
Example 2
Example 1 except that a PET film ((oxygen transmission coefficient) = 0.018 (cm 3 · 0.1 mm) / (m 2 · 24 h · atm), film thickness 12 μm) was used as the polymer film A standard shape anti-vibration rubber sample was prepared by the above method and evaluated.

実施例3
高分子フィルムとして、ポリ塩化ビニリデンフィルム((酸素透過係数)=0.0006(cm・0.1mm)/(m・24h・atm)、フィルム厚み10μm)を使用した以外は、実施例1と同様の方法により標準形状防振ゴムサンプルを作製して評価を行った。
Example 3
Example 1 except that a polyvinylidene chloride film ((oxygen permeability coefficient) = 0.006 (cm 3 · 0.1 mm) / (m 2 · 24 h · atm), film thickness 10 μm) was used as the polymer film Standard shape anti-vibration rubber samples were prepared and evaluated in the same manner as above.

実施例4
高分子フィルムとして、ポリエチレンフィルム((酸素透過係数)=0.66(cm・0.1mm)/(m・24h・atm)、フィルム厚み10μm)を使用した以外は、実施例1と同様の方法により標準形状防振ゴムサンプルを作製して評価を行った。
Example 4
Example 1 except that a polyethylene film ((oxygen permeability coefficient) = 0.66 (cm 3 · 0.1 mm) / (m 2 · 24 h · atm), film thickness 10 μm) was used as the polymer film A standard-shaped anti-vibration rubber sample was prepared by the above method and evaluated.

比較例1
加硫ゴム表面に酸素透過係数が1(cm・0.1mm)/(m・24h・atm)以下である高分子フィルム層を貼付しないこと以外は、実施例1と同様の方法により標準形状を有する加硫ゴムを作製し、これを標準形状防振ゴムサンプルとした。評価結果を表1に示す。
Comparative Example 1
Standards were obtained in the same manner as in Example 1 except that the polymer film layer having an oxygen permeability coefficient of 1 (cm 3 · 0.1 mm) / (m 2 · 24 h · atm) or less was not attached to the vulcanized rubber surface. A vulcanized rubber having a shape was prepared, and this was used as a standard-shaped vibration-proof rubber sample. The evaluation results are shown in Table 1.

Figure 2009279763
Figure 2009279763

表1の結果より、比較例1の製造方法により製造された防振ゴムに比べて、実施例1〜4の製造方法により製造された防振ゴムは、加熱劣化後の耐久性に優れることがわかる。   From the results of Table 1, the anti-vibration rubber produced by the production methods of Examples 1 to 4 is superior in durability after heat deterioration compared to the anti-vibration rubber produced by the production method of Comparative Example 1. Recognize.

Claims (4)

天然ゴムを主成分とするゴム成分を含有するゴム組成物の加硫ゴム表面に酸素透過係数が1(cm・0.1mm)/(m・24h・atm)以下である高分子フィルムを貼付する貼付工程を含むことを特徴とする防振ゴムの製造方法。 A polymer film having an oxygen permeability coefficient of 1 (cm 3 · 0.1 mm) / (m 2 · 24 h · atm) or less is formed on the surface of a vulcanized rubber of a rubber composition containing a rubber component mainly composed of natural rubber. A method for producing an anti-vibration rubber comprising a pasting step for pasting. 前記高分子フィルムが、フィルム表面をコロナ放電処理又はプラズマ処理したものである請求項1記載の防振ゴムの製造方法。   The method for producing a vibration-proof rubber according to claim 1, wherein the polymer film has a film surface subjected to corona discharge treatment or plasma treatment. 前記貼付工程が、天然ゴムを主成分とするゴム成分を含有するゴム組成物の加硫工程時に前記高分子フィルムを貼付する工程である請求項1又は2記載の防振ゴムの製造方法。   The method for producing a vibration-proof rubber according to claim 1 or 2, wherein the attaching step is a step of attaching the polymer film during a vulcanization step of a rubber composition containing a rubber component mainly composed of natural rubber. 天然ゴムを主成分とするゴム成分を含有するゴム組成物の加硫ゴム表面に酸素透過係数が1(cm・0.1mm)/(m・24h・atm)以下である高分子フィルム層を有することを特徴とする防振ゴム。 A polymer film layer having an oxygen permeability coefficient of 1 (cm 3 · 0.1 mm) / (m 2 · 24 h · atm) or less on a vulcanized rubber surface of a rubber composition containing a rubber component mainly composed of natural rubber Anti-vibration rubber characterized by having.
JP2008131073A 2008-05-19 2008-05-19 Method for producing rubber vibration insulator and rubber vibration insulator Pending JP2009279763A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008131073A JP2009279763A (en) 2008-05-19 2008-05-19 Method for producing rubber vibration insulator and rubber vibration insulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008131073A JP2009279763A (en) 2008-05-19 2008-05-19 Method for producing rubber vibration insulator and rubber vibration insulator

Publications (1)

Publication Number Publication Date
JP2009279763A true JP2009279763A (en) 2009-12-03

Family

ID=41450757

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008131073A Pending JP2009279763A (en) 2008-05-19 2008-05-19 Method for producing rubber vibration insulator and rubber vibration insulator

Country Status (1)

Country Link
JP (1) JP2009279763A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015063615A (en) * 2013-09-25 2015-04-09 凸版印刷株式会社 Barrier molded body
JP2016070023A (en) * 2014-10-01 2016-05-09 中日本高速技術マーケティング株式会社 Rubber bearing

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6241232A (en) * 1985-08-16 1987-02-23 Bridgestone Corp Bonding of vulcanized rubber with another material
JPH07196992A (en) * 1993-12-28 1995-08-01 Nippon Autom Kk Vibration-damping sheet
JPH0872203A (en) * 1994-08-31 1996-03-19 Bridgestone Corp Laminate of resin and rubber
JPH11207875A (en) * 1998-01-22 1999-08-03 Tokai Rubber Ind Ltd Polyamide-antivibration rubber composite and manufacture thereof
JP2001323081A (en) * 2000-05-15 2001-11-20 Toray Ind Inc Polyester film for bonding with rubber and laminated product
JP2003161389A (en) * 2001-11-27 2003-06-06 Toyo Tire & Rubber Co Ltd Flexible tube and manufacturing method therefor
JP2004182995A (en) * 2003-12-09 2004-07-02 Nissin Electric Co Ltd Method for producing automotive parts

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6241232A (en) * 1985-08-16 1987-02-23 Bridgestone Corp Bonding of vulcanized rubber with another material
JPH07196992A (en) * 1993-12-28 1995-08-01 Nippon Autom Kk Vibration-damping sheet
JPH0872203A (en) * 1994-08-31 1996-03-19 Bridgestone Corp Laminate of resin and rubber
JPH11207875A (en) * 1998-01-22 1999-08-03 Tokai Rubber Ind Ltd Polyamide-antivibration rubber composite and manufacture thereof
JP2001323081A (en) * 2000-05-15 2001-11-20 Toray Ind Inc Polyester film for bonding with rubber and laminated product
JP2003161389A (en) * 2001-11-27 2003-06-06 Toyo Tire & Rubber Co Ltd Flexible tube and manufacturing method therefor
JP2004182995A (en) * 2003-12-09 2004-07-02 Nissin Electric Co Ltd Method for producing automotive parts

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015063615A (en) * 2013-09-25 2015-04-09 凸版印刷株式会社 Barrier molded body
JP2016070023A (en) * 2014-10-01 2016-05-09 中日本高速技術マーケティング株式会社 Rubber bearing

Similar Documents

Publication Publication Date Title
JP6112755B2 (en) Anti-vibration rubber composition and anti-vibration rubber
JP5420224B2 (en) Rubber composition for anti-vibration rubber, anti-vibration rubber and method for producing the same
JP5873063B2 (en) Rubber composition for anti-vibration rubber and anti-vibration rubber
JP5949493B2 (en) Anti-vibration rubber composition and anti-vibration rubber
JP2013147581A (en) Rubber composition and tire using the same
JP5983049B2 (en) Anti-vibration rubber composition and anti-vibration rubber
JP5992838B2 (en) Rubber composition for anti-vibration rubber
WO2015186482A1 (en) Rubber vibration dampener composition and rubber vibration dampener
JP2010013504A (en) Rubber composition for air spring, and air spring
JP2009279763A (en) Method for producing rubber vibration insulator and rubber vibration insulator
JP2014077050A (en) Rubber composition for vibration-proof rubber and vibration-proof rubber
JP2011016924A (en) Rubber composition for tire and pneumatic tire using the same
JP2009007422A (en) Rubber composition and tire
JP5872843B2 (en) Rubber composition for anti-vibration rubber
JP5559021B2 (en) Method for producing vulcanized rubber laminate and vulcanized rubber laminate
JP2011162585A (en) Rubber composition for vibration-damping rubber, and vibration-damping rubber
WO2014203695A1 (en) Rubber composition for vibration-proof rubber
JP2009215541A (en) Rubber composition for air spring and air spring
JP2017052833A (en) Rubber composition and method for producing the same
WO2016120991A1 (en) Rubber composition for vibration damping rubbers, and vibration damping rubber
JP2008163067A (en) Rubber composition
KR20200055173A (en) Rubber composition for suspention bush of automobile having improved heat resistance and rubber for suspention bush of automobile using the same
JP2008069199A (en) Rubber composition for coating fixed cord and tire having carcass and/or belt using the same
JP6105426B2 (en) Anti-vibration rubber composition and anti-vibration rubber
JP2013151584A (en) Rubber composition for rubber vibration isolator

Legal Events

Date Code Title Description
A621 Written request for application examination

Effective date: 20101129

Free format text: JAPANESE INTERMEDIATE CODE: A621

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20120124

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120214

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20120627