JPH0448833B2 - - Google Patents

Info

Publication number
JPH0448833B2
JPH0448833B2 JP60043421A JP4342185A JPH0448833B2 JP H0448833 B2 JPH0448833 B2 JP H0448833B2 JP 60043421 A JP60043421 A JP 60043421A JP 4342185 A JP4342185 A JP 4342185A JP H0448833 B2 JPH0448833 B2 JP H0448833B2
Authority
JP
Japan
Prior art keywords
rubber
adhesive composition
adhesive
weight
parts
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 - Lifetime
Application number
JP60043421A
Other languages
Japanese (ja)
Other versions
JPS61203186A (en
Inventor
Tadanobu Iwasa
Toshikatsu Kanehara
Hideyuki Fujiwara
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.)
Toyoda Gosei Co Ltd
Original Assignee
Toyoda Gosei 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 Toyoda Gosei Co Ltd filed Critical Toyoda Gosei Co Ltd
Priority to JP4342185A priority Critical patent/JPS61203186A/en
Priority to US06/836,157 priority patent/US4755548A/en
Priority to DE3607220A priority patent/DE3607220C2/en
Publication of JPS61203186A publication Critical patent/JPS61203186A/en
Publication of JPH0448833B2 publication Critical patent/JPH0448833B2/ja
Granted legal-status Critical Current

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  • Compositions Of Macromolecular Compounds (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

発明の目的 (産業上の利用分野) 本発明はゴム用接着性組成物、とりわけ金属に
対する密着力が向上することと、各種ゴムに対し
て安定した密着力が得られることを目的とするゴ
ム用接着性組成物に関するものである。 (従来の技術) 従来、ゴムと金属との接着を行うには、金属の
接着面にフエノール樹脂を主成分とするプライマ
ーおよび塩素化系ポリマーを主成分とするカバー
コートを塗布後、この上に加硫ゴムもしくは未加
硫ゴムを配置し、加圧・加熱処理により接着する
方法が用いられている。 (発明が解決しようとする問題点) ところが、ゴムの組成や用途によつては上記プ
ライマーおよびカバーコートによる接着ではその
密着力が不充分な場合もあり、とりわけ高温雰囲
気中で使用される工業用ゴム製品の場合には熱劣
化後の密着力が低下しやすいため、より強固な密
着力を備えた接着性組成物が望まれている。 本発明者らは上記問題点の解決を目的として、
ゴム用接着性組成物につき研究を重ねた結果、ゴ
ムと金属との接着に用いて充分なる密着力を発揮
する接着性組成物を見出し、本発明を完成させる
に至つた。 発明の構成 (問題点を解決するための手段) すなわち、本発明は塩素化系ポリマーを主成分
とする接着主剤と、ジチオカルバミン酸塩と、石
油樹脂とからなり、同接着主剤の固形分100重量
部に対し、ジチオカルバミン酸塩が2〜20重量
部、石油樹脂が30〜100重量部の割合で配合され
ていることを特徴とする接着性組成物を案出する
ことにより、上記問題点の解決を図つたものであ
る。 (作用) 金属の接着面にプライマーを塗布し、さらに塩
素化系ポリマーを主成分とする組成物を主剤とし
てこれにジチオカルバミン酸塩と石油樹脂とを所
定割合配合したカバーコートを塗布することによ
り、このプライマーとカバーコートとを介して金
属とゴムとが強固に密着し、とりわけ熱老化後の
密着性が向上することは勿論、各種ゴムに対して
安定した密着力が得られる。 (実施例) 上記接着性組成物につき、より具体的に説明す
れば、塩素化系ポリマーを主成分とする接着主剤
とは塩化ゴム、塩素化ポリプロピレン、塩素化エ
チレン−プロピレンゴム、クロロスルホン化ポリ
エチレン、クロロプレンゴム、塩化ビニル系エラ
ストマーなどを主成分としてカーボンブラツクお
よび少量の架橋剤が添加された接着剤である。 また、ジチオカルバミン酸塩とはジブチルジチ
オカルバミン酸ニツケルやジエチルジチオカルバ
ミン酸ニツケルなど、老化防止剤、加硫促進剤と
して用いられているジアルキルジチオカルバミン
酸の金属塩である。 上記塩素化系ポリマーを主成分とする接着主剤
とジチオカルバミン酸塩との配合比は、同接着主
剤の固形分100重量部に対し、ジチオカルバミン
酸塩が2〜20重量部の範囲であることが好まし
く、20重量部を超えると密着力が低下する。 さらに、石油樹脂とはスチレン、ビニルトルエ
ン、インデンなどの重合体からなり、芳香族系炭
化水素および多環式炭化水素を主成分とする軟化
点0℃〜120℃、固定炭素含有量15〜30%の接着
性樹脂である。 この石油樹脂を配合する場合には、上記接着主
剤の固形分100重量部に対し30〜100重量部が適量
であり、30重量部以下だと各種ゴムに対して安定
した密着力が得られず、逆に100重量部を越える
と密着力が低下する。 上記接着性組成物の調整方法はトルエン、キシ
レンなどの芳香族系炭化水素やクロロホルムなど
の塩素系炭化水素あるいは二硫化炭素などを適宜
混合した溶剤中で上記接着主剤とジチオカルバミ
ン酸塩と、さらに石油樹脂を、上記所定の割合で
混合するだけでよい。 次に、このようにして得られる接着性組成物を
用いたゴムの接着方法を簡単に説明する。 まず、金属の接着面を常法により前処理し、金
属用プライマーを塗布後、上記接着性組成物を塗
布する。 このプライマーや接着性組成物の塗布方法は、
いずれも通常の塗装方法を用いればよい。 次いで、加硫ゴムまたは未加硫ゴムの基材をこ
の上に置き、熱盤プレスなどを用いて同ゴム基材
を押圧するとともに加熱すればよい。 この加圧・加熱処理により、プライマー−接着
性組成物−ゴム基材の界面に架橋反応が起こり、
ゴム基材と金属とはプライマーと接着性組成物と
を介して強固に密着する。 また、未加硫ゴムの基材を使用した場合には加
硫反応も同時に進行する。 次に、この接着性組成物の適用対象となる加硫
ゴムもしくは未加硫ゴムとは、天然ゴム(NR)
の外、各種合成ゴム、すなわち塩素化ブチルゴム
(Cl−IIR)、クロロプレンゴム(CR)、クロロス
ルホン化ポリエチレン(CSM)、スチレン−ブタ
ジエンゴム(SBR)、ニトリルゴム(NBR)、エ
チレン−プロピレン−ジエン三元共重合ゴム
(EPDM)、エチレン−プロピレン共重合ゴム
(EPM)などであり、ほとんどのゴムがその適用
対象となる。 以下、実施例により詳細な説明をするが、本発
明はこれらの実施例に限定されるものではない。 実施例 1 表−1の組成からなる未加硫天然ゴム(NR)
配合物を160℃、15分間プレス加硫して5mm厚の
NRゴム基材を調整した。
Purpose of the Invention (Field of Industrial Application) The present invention is directed to an adhesive composition for rubber, particularly an adhesive composition for rubber, which aims to improve adhesion to metals and to obtain stable adhesion to various rubbers. The present invention relates to an adhesive composition. (Conventional technology) Conventionally, in order to bond rubber and metal, a primer containing a phenolic resin as a main component and a cover coat containing a chlorinated polymer as a main component are applied to the adhesion surface of the metal, and then a cover coat is applied on top of this. A method is used in which vulcanized rubber or unvulcanized rubber is placed and bonded by pressure and heat treatment. (Problems to be Solved by the Invention) However, depending on the composition of the rubber and its intended use, the adhesive strength of the primer and cover coat described above may be insufficient, especially for industrial applications used in high-temperature atmospheres. In the case of rubber products, the adhesive strength tends to decrease after thermal deterioration, so an adhesive composition with stronger adhesive strength is desired. The present inventors aimed to solve the above problems,
As a result of repeated research into adhesive compositions for rubber, they discovered an adhesive composition that exhibits sufficient adhesion when used to bond rubber and metal, leading to the completion of the present invention. Structure of the Invention (Means for Solving Problems) That is, the present invention consists of a main adhesive agent mainly composed of a chlorinated polymer, a dithiocarbamate, and a petroleum resin, and the solid content of the main adhesive agent is 100% by weight. The above problem was solved by devising an adhesive composition characterized in that the dithiocarbamate is blended in a ratio of 2 to 20 parts by weight and the petroleum resin is blended in a ratio of 30 to 100 parts by weight. This is what we are trying to achieve. (Function) By applying a primer to the adhesive surface of the metal, and further applying a cover coat containing a composition mainly composed of a chlorinated polymer and a predetermined proportion of dithiocarbamate and petroleum resin, The metal and the rubber adhere firmly through the primer and cover coat, which not only improves adhesion especially after heat aging, but also provides stable adhesion to various rubbers. (Example) To explain the above adhesive composition more specifically, the main adhesive agent mainly composed of chlorinated polymers is chlorinated rubber, chlorinated polypropylene, chlorinated ethylene-propylene rubber, chlorosulfonated polyethylene. This adhesive is mainly composed of , chloroprene rubber, vinyl chloride elastomer, etc., with carbon black and a small amount of crosslinking agent added. Furthermore, dithiocarbamates are metal salts of dialkyldithiocarbamic acids, such as nickel dibutyldithiocarbamate and nickel diethyldithiocarbamate, which are used as anti-aging agents and vulcanization accelerators. The blending ratio of the main adhesive agent mainly composed of the above-mentioned chlorinated polymer and the dithiocarbamate salt is preferably in the range of 2 to 20 parts by weight per 100 parts by weight of the solid content of the main adhesive agent. If the amount exceeds 20 parts by weight, the adhesion will decrease. Furthermore, petroleum resins are composed of polymers such as styrene, vinyltoluene, and indene, and are mainly composed of aromatic hydrocarbons and polycyclic hydrocarbons, have a softening point of 0°C to 120°C, and a fixed carbon content of 15 to 30°C. % adhesive resin. When blending this petroleum resin, the appropriate amount is 30 to 100 parts by weight per 100 parts by weight of the solid content of the above adhesive base, and if it is less than 30 parts by weight, stable adhesion to various rubbers cannot be obtained. On the other hand, if it exceeds 100 parts by weight, the adhesion will decrease. The method for preparing the above-mentioned adhesive composition is to prepare the above-mentioned adhesive base and dithiocarbamate in a solvent containing an appropriate mixture of aromatic hydrocarbons such as toluene and xylene, chlorine-based hydrocarbons such as chloroform, or carbon disulfide, and further add petroleum oil. It is sufficient to simply mix the resins in the above-mentioned predetermined ratios. Next, a method for bonding rubber using the adhesive composition thus obtained will be briefly described. First, a metal adhesion surface is pretreated by a conventional method, a metal primer is applied, and then the adhesive composition described above is applied. The method for applying this primer and adhesive composition is as follows:
In either case, a normal painting method may be used. Next, a base material of vulcanized rubber or unvulcanized rubber is placed on this, and the rubber base material is pressed and heated using a hot platen press or the like. Through this pressure and heat treatment, a crosslinking reaction occurs at the primer-adhesive composition-rubber base interface.
The rubber base material and the metal are tightly adhered to each other through the primer and the adhesive composition. Further, when an unvulcanized rubber base material is used, the vulcanization reaction also proceeds at the same time. Next, the vulcanized rubber or unvulcanized rubber to which this adhesive composition is applied is natural rubber (NR).
In addition, various synthetic rubbers, namely chlorinated butyl rubber (Cl-IIR), chloroprene rubber (CR), chlorosulfonated polyethylene (CSM), styrene-butadiene rubber (SBR), nitrile rubber (NBR), ethylene-propylene-diene Most rubbers are applicable, including ternary copolymer rubber (EPDM) and ethylene-propylene copolymer rubber (EPM). Hereinafter, detailed explanation will be given with reference to Examples, but the present invention is not limited to these Examples. Example 1 Unvulcanized natural rubber (NR) having the composition shown in Table-1
The mixture was press-vulcanized at 160℃ for 15 minutes to form a 5mm thick
The NR rubber base material was prepared.

【表】【table】

【表】 一方、約3mm厚の鉄板の接着面をトリクロルエ
チレンで脱脂後、グリツドブラスト処理を施して
プライマーを塗布し、50℃、10分間乾燥後、さら
に接着性組成物を塗布した。 プライマーは「ケムロツク−205」(商品名、ロ
ード社製フエノール樹脂系接着剤)を使用した
(膜厚=約10μ)。また、接着性組成物はケムロツ
ク−252(商品名、ロード社製クロロスルホン化ポ
リエチレン系接着剤)と「ノクラツク−NBC」
(商品名、大内新興化学社製ジブチルジチオカル
バミン酸ニツケル)と「フツコールレジン・FR
−L」(商品名、富士興産製石油系芳香族炭化水
素)との配合物(膜厚=約10μ)であり、表−3
にその配合比を示す。 次に、この鉄板二枚の間に前記NRゴム基材を
挟み、上下両方向から鉄板を押圧した。 このときの押圧力はゴム基材の厚みが25%減少
する程度である。 この状態を図示すると、1は鉄板、2はゴム基
材、3,4はそれぞれプライマー、接着性組成物
である。 次いで、この状態を保持したまま、これを150
℃の恒温槽に40分間入れて接着性組成物を反応さ
せ、ゴム基材と鉄板とを接着した。 実施例 2 表−2の組成からなる未加硫塩素化ブチルゴム
(Cl−IIR)配合物を160℃、15分間プレス加硫し
て5mm厚のCl−IIRゴム基材を調整した。
[Table] On the other hand, the adhesion surface of an approximately 3 mm thick iron plate was degreased with trichlorethylene, subjected to grid blasting and coated with a primer, and after drying at 50°C for 10 minutes, an adhesive composition was further applied. The primer used was ``Chemrock-205'' (trade name, phenolic resin adhesive manufactured by Lord Co., Ltd.) (film thickness = approximately 10μ). In addition, the adhesive compositions are Chemrock-252 (trade name, chlorosulfonated polyethylene adhesive manufactured by Lord Co., Ltd.) and "Nokrac-NBC".
(Product name: Nickel dibutyldithiocarbamate manufactured by Ouchi Shinko Kagaku Co., Ltd.) and “Futukol Resin FR
-L" (trade name, petroleum-based aromatic hydrocarbon manufactured by Fuji Kosan) (film thickness = approximately 10μ), Table 3
shows the mixing ratio. Next, the NR rubber base material was sandwiched between the two iron plates, and the iron plates were pressed from both the upper and lower directions. The pressing force at this time is such that the thickness of the rubber base material is reduced by 25%. To illustrate this state, 1 is an iron plate, 2 is a rubber base material, and 3 and 4 are a primer and an adhesive composition, respectively. Then, while maintaining this state, change this to 150
The adhesive composition was placed in a constant temperature bath at ℃ for 40 minutes to react, and the rubber base material and the iron plate were bonded together. Example 2 An unvulcanized chlorinated butyl rubber (Cl-IIR) compound having the composition shown in Table 2 was press-vulcanized at 160° C. for 15 minutes to prepare a 5 mm thick Cl-IIR rubber base material.

〔試験方法〕〔Test method〕

120℃の恒温槽に10日間放置して熱劣化させた
実施例−1,2の試料、および未劣化の同試料に
つき、オートグラフを用いて引張り剪断試験と破
壊モードの測定を行つた。 前記接着性組成物中の配合物の混合比を変えて
それぞれの場合につき、試験を行つた結果を表−
3,4に示す。
A tensile shear test and failure mode measurements were performed using an autograph on the samples of Examples 1 and 2 that had been left in a thermostat at 120° C. for 10 days to undergo thermal deterioration, and on the undegraded samples. The results of tests conducted in each case with different mixing ratios of the compounds in the adhesive composition are shown below.
Shown in 3 and 4.

【表】【table】

【表】【table】

【表】【table】

【表】 上記表−3,4の試験結果から、前記実施例の
接着性組成物を使用することにより、ゴム基材と
鉄板とは強固に密着し、しかも熱劣化後において
も充分な密着力を保つとともに、各種ゴムに対し
ても安定した密着力が得られることがわかる。 発明の効果 以上詳述したように、上記接着性組成物はゴム
と金属とを接着する際に用いて充分なる密着力を
示し、しかも熱劣化後における密着力の低下が少
なく、さらには各種ゴムに対して安定した密着力
が得られるという効果を発揮し、広範な用途に利
可能な優れた発明である。
[Table] From the test results in Tables 3 and 4 above, it is clear that by using the adhesive composition of the above example, the rubber base material and the steel plate adhere firmly, and even after thermal deterioration, sufficient adhesion strength is maintained. It can be seen that stable adhesion to various rubbers can be obtained. Effects of the Invention As detailed above, the adhesive composition described above exhibits sufficient adhesion when used to bond rubber and metal, and exhibits little decrease in adhesion after thermal deterioration. This is an excellent invention that can be used for a wide range of purposes, and has the effect of providing stable adhesion to the surface of the substrate.

【図面の簡単な説明】[Brief explanation of the drawing]

図は本発明の接着性組成物を介してゴムと鉄板
とが接着されている状態を示す断面図である。 1……鉄板、2……ゴム基材、3……接着性組
成物。
The figure is a sectional view showing a state in which rubber and a steel plate are bonded via the adhesive composition of the present invention. 1... Iron plate, 2... Rubber base material, 3... Adhesive composition.

Claims (1)

【特許請求の範囲】[Claims] 1 塩素化系ポリマーを主成分とする接着主剤
と、ジチオカルバミン酸塩と、石油樹脂とからな
り、同接着主剤の固形分100重量部に対し、ジチ
オカルバミン酸塩が2〜20重量部、石油樹脂が30
〜100重量部の割合で配合されていることを特徴
とする接着性組成物。
1 Consists of a main adhesive agent mainly composed of a chlorinated polymer, a dithiocarbamate salt, and a petroleum resin.For 100 parts by weight of the solid content of the main adhesive agent, the dithiocarbamate salt is 2 to 20 parts by weight, and the petroleum resin is 30
An adhesive composition characterized in that the adhesive composition is blended in a proportion of ~100 parts by weight.
JP4342185A 1985-03-05 1985-03-05 Adhesive composition Granted JPS61203186A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP4342185A JPS61203186A (en) 1985-03-05 1985-03-05 Adhesive composition
US06/836,157 US4755548A (en) 1985-03-05 1986-03-04 Adhesive composition
DE3607220A DE3607220C2 (en) 1985-03-05 1986-03-05 Adhesive composition of chlorinated polymer, petroleum resin and dithiocarbamate and their use

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4342185A JPS61203186A (en) 1985-03-05 1985-03-05 Adhesive composition

Publications (2)

Publication Number Publication Date
JPS61203186A JPS61203186A (en) 1986-09-09
JPH0448833B2 true JPH0448833B2 (en) 1992-08-07

Family

ID=12663234

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4342185A Granted JPS61203186A (en) 1985-03-05 1985-03-05 Adhesive composition

Country Status (1)

Country Link
JP (1) JPS61203186A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5618668A (en) * 1979-07-25 1981-02-21 Nippon Oil & Fats Co Ltd Aqueous adhesive composition

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5618668A (en) * 1979-07-25 1981-02-21 Nippon Oil & Fats Co Ltd Aqueous adhesive composition

Also Published As

Publication number Publication date
JPS61203186A (en) 1986-09-09

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