JPH01275966A - Gasket - Google Patents
GasketInfo
- Publication number
- JPH01275966A JPH01275966A JP10108288A JP10108288A JPH01275966A JP H01275966 A JPH01275966 A JP H01275966A JP 10108288 A JP10108288 A JP 10108288A JP 10108288 A JP10108288 A JP 10108288A JP H01275966 A JPH01275966 A JP H01275966A
- Authority
- JP
- Japan
- Prior art keywords
- gasket
- rubber
- nitrile
- parts
- flow path
- 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
- 229920001971 elastomer Polymers 0.000 claims abstract description 27
- 239000005060 rubber Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 150000002825 nitriles Chemical class 0.000 claims abstract description 10
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 9
- 150000001875 compounds Chemical class 0.000 claims abstract description 8
- 229920000247 superabsorbent polymer Polymers 0.000 claims description 13
- 238000013329 compounding Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 2
- 229920000642 polymer Polymers 0.000 abstract 3
- 230000000052 comparative effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 230000000704 physical effect Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000008961 swelling Effects 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000006057 Non-nutritive feed additive Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 229920000578 graft copolymer Polymers 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000004583 superabsorbent polymers (SAPs) Substances 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 235000014692 zinc oxide Nutrition 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 229920003123 carboxymethyl cellulose sodium Polymers 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 229940105329 carboxymethylcellulose Drugs 0.000 description 1
- 229940063834 carboxymethylcellulose sodium Drugs 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- CYKDLUMZOVATFT-UHFFFAOYSA-N ethenyl acetate;prop-2-enoic acid Chemical compound OC(=O)C=C.CC(=O)OC=C CYKDLUMZOVATFT-UHFFFAOYSA-N 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920005614 potassium polyacrylate Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010058 rubber compounding Methods 0.000 description 1
- 238000013040 rubber vulcanization Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
Landscapes
- Sealing Material Composition (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、水系流路とオイル系流路の双方を備えた静止
部材相互の接合面間に使用され、ニトリルゴム配合物の
ゴム加硫物からなるガスケットに関する。Detailed Description of the Invention <Industrial Application Field> The present invention is used between joint surfaces of stationary members having both water-based channels and oil-based channels, and is used for rubber vulcanization of nitrile rubber compounds. Concerning gaskets made of material.
〈従来の技術〉
ここでは、上記タイプのガスケットGとして、第2図に
示すような、エンジン1のヘッド3とインテークマニホ
ールド5との接合面間に使用されるものを例に取り説明
するが、これに限られるものではない。ヘッド3とイン
テークマニホールド5との間には、水系流路としての冷
却水流路と、オイル系流路としてのガソリン流路が配設
されている。<Prior Art> Here, as an example of the above-mentioned type of gasket G, a gasket G used between the joint surface of the head 3 of the engine 1 and the intake manifold 5 as shown in FIG. 2 will be explained. It is not limited to this. A cooling water flow path as a water flow path and a gasoline flow path as an oil flow path are provided between the head 3 and the intake manifold 5.
上記のような部位に使用さ・ねるガスケットの構成は、
通常、それぞれの流路に対応した材料(金属製やゴム製
)で別に構成して対応していた。The structure of the gasket used in the above areas is as follows:
Normally, each channel was configured with a different material (metal or rubber) that corresponded to the channel.
〈発明が解決しようとする課題〉
このため、ガスケットを各流路用に別々に成形しなけれ
ばならず、全体として成形工数が嵩むとともに、組み付
は工数も嵩んだ。<Problems to be Solved by the Invention> For this reason, gaskets had to be molded separately for each flow path, which increased the number of man-hours for molding as a whole, and also increased the number of man-hours for assembly.
本発明は、上記にかんがみて、各流路用のガスケットを
別体に形成する必要がなく、成形工数、組み付は工数大
幅な低減が可能なガスケットを提供することを目的とす
る。In view of the above, an object of the present invention is to provide a gasket that does not require separate formation of gaskets for each flow path and can significantly reduce the number of man-hours for molding and assembly.
〈課題を解決するための手段〉
本発明者らは、上記課題を解決するために鋭意開発に努
力をした結果、下記構成のガスケットに想到し得た。<Means for Solving the Problems> As a result of intensive development efforts by the present inventors in order to solve the above problems, the present inventors were able to come up with a gasket having the following configuration.
水系流路とオイル系流路の双方を備えた静止部材相互の
接合面間に使用され、ニトリルゴム配合物のゴム加硫物
からなるガスケットであって、ニトリルゴム配合物の配
合処方が、■原料ゴムのニトリル含量=15〜45%で
ある、■該原料ゴム100重量部に対して高吸水性ポリ
マー10〜40重量部配合されてなる、要件を具備して
いる、こ4とを特徴とするガスケット。A gasket made of a rubber vulcanizate of a nitrile rubber compound, which is used between the joint surfaces of stationary members having both a water-based flow path and an oil-based flow path, the compounding formulation of the nitrile rubber compound being: 4) The raw rubber has a nitrile content of 15 to 45%, and 10 to 40 parts by weight of a super absorbent polymer is blended with 100 parts by weight of the raw rubber. gasket.
く解決手段の詳細な説明〉
以下、解決手段について詳説する。なお、以下の説明で
、配合単位を示す「部」は、特にことわらない限り「重
量部」を意味する。Detailed explanation of the solution> The solution will be explained in detail below. In the following description, "parts" indicating a blending unit means "parts by weight" unless otherwise specified.
第1図は、本発明を適用したガスケットGの一例を示す
平面図である。FIG. 1 is a plan view showing an example of a gasket G to which the present invention is applied.
このガスケットは、ニトリルゴム配合物のゴム加硫物か
らなり、当該ゴム加硫物は、下記要件を具備している。This gasket is made of a rubber vulcanizate of a nitrile rubber compound, and the rubber vulcanizate has the following requirements.
■原料ゴムのニトリル含量=15〜45%テする。ここ
で、15%未満では、オイルによる膨潤が大きくなりす
ぎ、45%を超えると所定のオイル脚間性が、即ち、オ
イルに対する自己シール性が得がたい。■Nitrile content of raw rubber = 15 to 45%. Here, if it is less than 15%, the swelling due to oil becomes too large, and if it exceeds 45%, it is difficult to obtain a predetermined oil interstitial property, that is, a self-sealing property against oil.
■該原料ゴム100部に対して高吸水性ポリマー10〜
40部配合されてなる。■10 to 10 parts of super absorbent polymer per 100 parts of the raw material rubber
Contains 40 parts.
ここで、10部未満では、所定の水膨潤性h(得られず
、40部を超えると、加硫ゴムの常悪物性が低下してそ
れぞれ望ましくない。Here, if it is less than 10 parts, the predetermined water swelling property h (h) cannot be obtained, and if it exceeds 40 parts, the physical properties of the vulcanized rubber deteriorate, which is not desirable.
ここで、高吸水性ポリマーとは、自重の数十倍から一千
倍近くの水を吸収し、しかも−旦水を吸収して膨潤して
ヒドロゲル化したものは、多少の圧力では離水しない性
質を有するものをし)う。Here, superabsorbent polymers have the property of absorbing water tens to nearly 1,000 times their own weight, and once they absorb water and swell to form a hydrogel, they do not release water even under slight pressure. (do something that has)
具体的な高吸水性ポリマーとしては、ポリアクリル酸塩
系(ex、ポリアクリル酸ナトリウム・カリウム)、ポ
リビニルアルコール−環状無水物グラフト共重合体、イ
ソブチレン−マレイン酸共重合体、澱粉−ポリアクリル
酸塩グラフト共重合イ本、酢酸ビニル−アクリル酸エス
テル共重合体、酢酸ビニルー不飽和ジカルボン酸共重合
体、ポリエチレンオキサイド系、カルボキシメチルセル
ロース系(ex、カルボキシメチルセルロースナトリウ
ム)、澱粉−ポリアクリロニトリルグラフト共重合体等
を挙げることができる。Specific superabsorbent polymers include polyacrylate-based (ex, sodium/potassium polyacrylate), polyvinyl alcohol-cyclic anhydride graft copolymer, isobutylene-maleic acid copolymer, and starch-polyacrylic acid. Salt graft copolymerization, vinyl acetate-acrylic acid ester copolymer, vinyl acetate-unsaturated dicarboxylic acid copolymer, polyethylene oxide type, carboxymethyl cellulose type (ex, carboxymethyl cellulose sodium), starch-polyacrylonitrile graft copolymer etc. can be mentioned.
これらの形態は、通常、粉体又は顆粒体で原料ゴムと混
練して使用する。These forms are usually used in the form of powder or granules, which are kneaded with raw rubber.
上記原料ゴムには、通常のニトリルゴムの配合処方と同
様、カーボンブラック、亜鉛華、加工助剤、老化防止剤
、硫黄加硫系薬剤等が混練されるこの混練後の未加硫ゴ
ム配合物は、トランスファ成形、プレス成形等により、
加硫成形されてガスケットとする。Carbon black, zinc white, processing aids, anti-aging agents, sulfur vulcanizing agents, etc. are kneaded into the raw material rubber, similar to the usual nitrile rubber formulation. is made by transfer molding, press molding, etc.
It is vulcanized and formed into a gasket.
〈発明の作用・効果〉
本発明のガスケットは、水系流路とオイル系流路の双方
を備えた静止部材相互の接合面間に使用され、ニトリル
ゴム配合物のゴム加硫物からなるガスケットであって、
ニトリルゴム配合物の配合処方が、■原料ゴムのニトリ
ル含量=15〜45%である、■該原料ゴム100重量
部に対して高吸水性ポリマー10〜40重量部配合され
てなる、要件を具備している構成により、下記のような
作用・効果を奏する。<Operations and Effects of the Invention> The gasket of the present invention is a gasket made of a rubber vulcanizate of a nitrile rubber compound, and is used between joint surfaces of stationary members having both a water-based flow path and an oil-based flow path. There it is,
The formulation of the nitrile rubber compound meets the following requirements: (1) the nitrile content of the raw rubber is 15 to 45%, (2) 10 to 40 parts by weight of a super absorbent polymer is blended with 100 parts by weight of the raw rubber. This configuration provides the following functions and effects.
水系流路から水系流体が静止部材相互接合面間に流出し
てきた場合、ガスケット中には、高吸水性ポリマーが配
合されているため1.該高吸水性ポリマーの吸水膨潤に
伴ない、ガスケット自体が膨張してシール圧が増大して
自己シール的作用を奏する。他方、オイル系流路からオ
イル系流体が静止部材相互間に流出してきた場合、ガス
ケットを構成する原料ゴムのニトリル含量が低いため、
オイルにより膨潤し、やはり、ガスケット自体が膨張し
てシール圧が増大して自己シール的作用を奏する。When water-based fluid flows out from the water-based flow path between the joint surfaces of the stationary members, 1. As the superabsorbent polymer absorbs water and swells, the gasket itself expands, increasing the sealing pressure and exhibiting a self-sealing effect. On the other hand, if the oil-based fluid flows out between the stationary members from the oil-based flow path, the nitrile content of the raw rubber constituting the gasket is low;
The gasket swells with oil, and the gasket itself expands, increasing the sealing pressure and exhibiting a self-sealing effect.
従って、本発明のガスケットは、各流路用のガスケット
を別体に形成する必要がなく、成形工数、組み付は工数
大幅な低減が可能となる。Therefore, with the gasket of the present invention, there is no need to separately form a gasket for each flow path, and the number of man-hours for molding and assembly can be significantly reduced.
く試験例〉
以下本発明の効果を確認するために行なった試駆引につ
いて説明をする。Test Example> Hereinafter, a trial drive conducted to confirm the effects of the present invention will be explained.
下記配合処方において、第1表に示す如く、ニトリル含
量の異なる原料ゴムを使用するとともに、高吸水性ポリ
マーの各量配合した原料ゴムを混練後、プレス成形(成
形条件;170″cxlo分)によりシート状の各ゴム
加硫物を得た。In the following compounding recipe, as shown in Table 1, raw rubbers with different nitrile contents are used, and after kneading raw rubbers containing various amounts of super absorbent polymer, the rubbers are press-molded (molding conditions: 170″cxlo min). Each rubber vulcanizate in the form of a sheet was obtained.
配 合 処 方
原料ゴム 100 部高吸水性ポリ
マー 変量
カーボンブラック 40 部加工助剤
10 部老化防止剤
6 部亜鉛華 5
部硫黄加硫系薬剤 4.5部該各ゴム
加硫物について下記項目の試験を行なった。Blend Prescription Raw material rubber 100 parts Super absorbent polymer Variable carbon black 40 parts Processing aid
10 parts anti-aging agent
6 parts zinc white 5
Part sulfur vulcanizing agent 4.5 parts The following tests were conducted on each of the rubber vulcanizates.
(1)常態物性:
硬度CHs:JIS−^)、引張強さ(T11 )及び
伸び(E、)の各物性につき、JIS−に6301に基
づいて測定をした。(1) Normal physical properties: The physical properties of hardness CHs: JIS-^), tensile strength (T11), and elongation (E, ) were measured based on JIS-6301.
(2)圧縮永久歪:
JIS−に6301に基づいて、100℃×70hの条
件で行なった。(2) Compression set: Based on JIS-6301, compression was performed at 100° C. for 70 hours.
(3)水系流体浸漬後膨潤率:
JIS−に6301に準じて、LLC/水=50150
の水系流体中に、100℃×70hの条件で浸漬して、
体積変化率を求めた。(3) Swelling rate after immersion in aqueous fluid: According to JIS-6301, LLC/water = 50150
immersed in an aqueous fluid at 100°C for 70 hours,
The volume change rate was determined.
(4)オイル系流体液浸漬後膨潤率:
JIS−に6301に準じて、ツユエルC(オイル系流
体)中に、60℃x48hの条件で浸漬して、体積変化
率を求めた。(4) Swelling rate after immersion in oil-based fluid: According to JIS-6301, the sample was immersed in Tsuyuel C (oil-based fluid) at 60° C. for 48 hours to determine the volume change rate.
上記試験結果を第1表に示すが、本発明の技術的思想の
範囲内にある各実施例は、常態物性において、従来例で
ある比較例3とほとんど変らず、かつ、体積膨張率が、
水系及びオイル系の両流体に対して大きいことが分る。The above test results are shown in Table 1, and each example within the scope of the technical idea of the present invention has almost no difference in normal state physical properties from Comparative Example 3, which is a conventional example, and has a volumetric expansion coefficient of
It can be seen that it is large for both water-based and oil-based fluids.
これに対して、ニトリル含量が高い比較例2は高吸水性
ポリマーを含有していても、オイル系流体に対する膨潤
率は小さいことが、高吸水性ポリマーの配合量が40部
を超える比較例1は、常態物性等において、低下率が大
きいことが、それぞれ分る。また、高吸水性ポリマーを
含有ヤない比較例3は水系流体に対する膨聞率が、高吸
水性ポリマーを配合している実施例及び他の比較例に比
して格段に小さいことが分る。In contrast, Comparative Example 2, which has a high nitrile content, has a small swelling ratio with respect to oil-based fluids even though it contains a superabsorbent polymer, whereas Comparative Example 1, which has a superabsorbent polymer content exceeding 40 parts It can be seen that the reduction rate is large in normal state physical properties, etc. Furthermore, it can be seen that Comparative Example 3, which does not contain a superabsorbent polymer, has a much smaller expansion coefficient with respect to aqueous fluids than Examples and other Comparative Examples in which a superabsorbent polymer is blended.
第1表Table 1
第1図は本発明を適用したガスケットの一例を示す平面
図、
第2図は本発明のガスケットを適用可能な部位を示す自
動車エンジンの概略正面図である。
1・・・エンジン、
3・・・エンジンヘッド、
5・・・インテークマニホールド
G・・・ガスケット。
特 許 出 願 人
第 1 図
第2図FIG. 1 is a plan view showing an example of a gasket to which the present invention is applied, and FIG. 2 is a schematic front view of an automobile engine showing parts to which the gasket of the present invention can be applied. 1...Engine, 3...Engine head, 5...Intake manifold G...Gasket. Patent applicant Figure 1 Figure 2
Claims (1)
の接合面間に使用され、ニトリルゴム配合物のゴム加硫
物からなるガスケットにおいて、前記ニトリルゴム配合
物の配合処方が、 (1)原料ゴムのニトリル含量=15〜45%である、 (2)該原料ゴム100重量部に対して高吸水性ポリマ
ー10〜40重量部配合されてなる、要件を具備してい
る、 ことを特徴とするガスケット。[Scope of Claims] A gasket made of a rubber vulcanizate of a nitrile rubber compound, which is used between joint surfaces of stationary members having both a water-based flow path and an oil-based flow path; The compounding recipe meets the following requirements: (1) the nitrile content of the raw rubber is 15 to 45%, and (2) 10 to 40 parts by weight of the superabsorbent polymer is blended to 100 parts by weight of the raw rubber. A gasket characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10108288A JPH01275966A (en) | 1988-04-22 | 1988-04-22 | Gasket |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10108288A JPH01275966A (en) | 1988-04-22 | 1988-04-22 | Gasket |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01275966A true JPH01275966A (en) | 1989-11-06 |
JPH0330026B2 JPH0330026B2 (en) | 1991-04-26 |
Family
ID=14291178
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10108288A Granted JPH01275966A (en) | 1988-04-22 | 1988-04-22 | Gasket |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01275966A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109897240A (en) * | 2019-02-20 | 2019-06-18 | 庄文琴 | A kind of preparation method of hydro-expansive rubber |
KR102264314B1 (en) * | 2020-02-14 | 2021-06-14 | 한국에스케이에프씰 주식회사 | Water Jacket Gasket rubber composition for engine |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021193802A1 (en) | 2020-03-26 | 2021-09-30 | Jsr株式会社 | Method for predicting efficacy of treatment of lung cancer patient using immune checkpoint inhibitor |
-
1988
- 1988-04-22 JP JP10108288A patent/JPH01275966A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109897240A (en) * | 2019-02-20 | 2019-06-18 | 庄文琴 | A kind of preparation method of hydro-expansive rubber |
KR102264314B1 (en) * | 2020-02-14 | 2021-06-14 | 한국에스케이에프씰 주식회사 | Water Jacket Gasket rubber composition for engine |
Also Published As
Publication number | Publication date |
---|---|
JPH0330026B2 (en) | 1991-04-26 |
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