JPH11106639A - Rubber part for automotive equipment - Google Patents

Rubber part for automotive equipment

Info

Publication number
JPH11106639A
JPH11106639A JP29154197A JP29154197A JPH11106639A JP H11106639 A JPH11106639 A JP H11106639A JP 29154197 A JP29154197 A JP 29154197A JP 29154197 A JP29154197 A JP 29154197A JP H11106639 A JPH11106639 A JP H11106639A
Authority
JP
Japan
Prior art keywords
resistance
rubber part
perfluoropolyether
rubber
cold
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.)
Withdrawn
Application number
JP29154197A
Other languages
Japanese (ja)
Inventor
Yoshihisa Takahashi
良尚 高橋
Akihiro Ito
晃弘 伊藤
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.)
Fujikura Composites Inc
Original Assignee
Fujikura Rubber 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 Fujikura Rubber Ltd filed Critical Fujikura Rubber Ltd
Priority to JP29154197A priority Critical patent/JPH11106639A/en
Publication of JPH11106639A publication Critical patent/JPH11106639A/en
Withdrawn legal-status Critical Current

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  • Compositions Of Macromolecular Compounds (AREA)
  • Polyethers (AREA)

Abstract

PROBLEM TO BE SOLVED: To obtain the subject rubber part good in gasoline resistance, amine resistance, alcohol resistance, MTBE resistance, oil resistance, gas permeation resistance, heat resistance and water resistance and further excellent in cold resistance by using a perfluropolyether. SOLUTION: This rubber part is obtained by using a perfluoropolyether (preferably a perfluoropolyether of the formula produced by polymerizing hexafluoropropylene through ether bonds). Since having the ether bonds in the polymer main chain and not containing a vinylidene fluoride unit, the rubber part has excellent low temperature flexibility, is little in the deterioration of the rubber part by the removal of hydrogen fluoride in an alkaline atmosphere, and is not affected by a polar solvent such as an alcohol or ketone.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は自動車機器用ゴム部品、
特にガソリン、オイルなどが接触する自動車用ダイヤフ
ラム、バルブ、O−リング、パッキン、ガスケットなど
のシール部分に使用されるゴム部品に関するものであ
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to rubber parts for automobile equipment,
In particular, the present invention relates to rubber parts used for sealing parts such as automotive diaphragms, valves, O-rings, packings, gaskets, etc., which come into contact with gasoline, oil and the like.

【0002】[0002]

【従来技術及び問題点】自動車機器用ゴム部品、特にエ
ンジン回りの補機類および流体シール部分に用いられる
ゴム部品としては、上述のようにフューエル・プレッシ
ャー・レギュレータ用ダイヤフラム、パルセーションダ
ンパー用ダイヤフラム、オイルプレッシャースイッチ用
ダイヤフラム、EGR用ダイヤフラムなどのダイヤフラ
ム類、キャニスタ用バルブ、パージコントロール用バル
ブなどのバルブ類、クイックコネクタ用O−リング、イ
ンジェクタ用O−リングなどのO−リング類、あるいは
オイルシール、シリンダヘッド用ガスケットなどのシー
ル材などが知られている。
2. Description of the Related Art Rubber parts for automotive equipment, particularly rubber parts used for auxiliary parts and fluid seals around an engine, include a diaphragm for a fuel pressure regulator, a diaphragm for a pulsation damper, and the like. O-rings such as O-rings for quick connectors, O-rings for injectors, or oil seals; Seal materials such as gaskets for cylinder heads are known.

【0003】このようなゴム部品が使用されるに際して
は、自動車に使用されるオイル、ガソリンなどが接触す
ることが余儀なくされる場合が多く、自動車部品の正常
な駆動を保証するためには、耐ガソリン性、耐アミン
性、耐アルコール性、耐MTBE性、耐油性さらには耐
ガス透過性、耐熱性、耐水性などが良好であることが要
求される。さらには、自動車は寒冷地方においても使用
されることから、耐寒性の良好なものである必要があ
る。
[0003] When such rubber parts are used, oil, gasoline, and the like used in automobiles are often forced to come into contact with each other. Good gasoline resistance, amine resistance, alcohol resistance, MTBE resistance, oil resistance, gas resistance, heat resistance, water resistance, etc. are required. Further, since automobiles are used in cold regions, they must have good cold resistance.

【0004】上述の点に鑑み、従来、フッ化ビニリデン
−6フッ化プロピレン共重合体などのフッ素ゴム、フッ
化ビニリデン−4フッ化エチレン−パーフロロビニルメ
チルエーテル共重合体などの耐寒フッ素ゴム、あるいは
フロロシリコーンなどが使用されている。しかしなが
ら、フッ化ビニリデン−6フッ化プロピレン共重合体は
耐熱性、耐油性、耐ガソリン性、耐歪性に優れていると
いう利点があるが、耐寒性が不十分であるという欠点が
あり、静的なシール用途で−20℃、動的なシール(ダ
イヤフラムなど)用途では−10℃が使用限界であると
いう欠点がある。さらに接触する相手材と粘着ないし固
着を引き起こしやすい点、アルコール、MTBE、ケト
ン類などによって大きく膨潤して使用に耐えられない
点、またガソリン、潤滑油に添加されているアミン系薬
品によって著しい劣化を生じるという欠点もある。
[0004] In view of the above, conventionally, fluorine-resistant rubber such as vinylidene fluoride-6-propylene propylene copolymer, cold-resistant fluorine rubber such as vinylidene fluoride-tetrafluoroethylene-perfluorovinyl methyl ether copolymer, Alternatively, fluorosilicone or the like is used. However, the vinylidene fluoride-6-fluoropropylene copolymer has the advantage of being excellent in heat resistance, oil resistance, gasoline resistance, and distortion resistance, but has the disadvantage of insufficient cold resistance, and has a disadvantage of static electricity. There is a drawback that -20 ° C. is the limit of use for typical sealing and -10 ° C. is used for dynamic sealing (such as a diaphragm). In addition, it easily causes sticking or sticking with the contacting partner material, it is greatly swollen by alcohol, MTBE, ketones, etc., and cannot be used, and it is significantly deteriorated by amine chemicals added to gasoline and lubricating oil. There is also the disadvantage that it occurs.

【0005】フッ化ビニリデン−4フッ化エチレン−パ
ーフロロビニルメチルエーテル共重合体は静的シール用
途で−30℃、動的な用途では−25℃まで使用可能で
あるが、近年の耐寒性要求に対して十分とは言い難く、
また、耐寒性以外では上述フッ化ビニリデン−6フッ化
プロピレン共重合体と同様の欠点を有している。
The vinylidene fluoride-tetrafluoroethylene-perfluorovinyl methyl ether copolymer can be used up to -30.degree. C. for static sealing applications and -25.degree. C. for dynamic applications. Is not enough for
Except for cold resistance, it has the same drawbacks as the vinylidene fluoride-6-propylene copolymer described above.

【0006】一方、フロロシリコーンは耐寒性には優れ
ているが、同様に耐アミン性、耐MTBE性が不十分
で、さらに耐ガス透過性、耐水性に劣るという欠点が有
る。このため上述の各特性がさらに良好なゴム部品が求
められているのが現状である。
[0006] On the other hand, fluorosilicone is excellent in cold resistance, but also has disadvantages in that amine resistance and MTBE resistance are insufficient, and gas permeability and water resistance are poor. For this reason, at present, there is a demand for rubber parts having the above-mentioned characteristics.

【0007】本発明は上述の問題点に鑑みなされたもの
であり、耐ガソリン性、耐アミン性、耐アルコール性、
耐MTBE性、耐油性さらには耐ガス透過性、耐熱性、
耐水性が良好で、しかも耐寒性にも優れた自動車用ゴム
部品を提供することを目的とする。
[0007] The present invention has been made in view of the above-mentioned problems, and has a gasoline resistance, an amine resistance, an alcohol resistance,
MTBE resistance, oil resistance, gas permeation resistance, heat resistance,
An object of the present invention is to provide a rubber part for automobiles having good water resistance and excellent cold resistance.

【0008】[0008]

【問題点を解決するための手段】上記問題点を解決する
ため、本発明による自動車機器用ゴム部品は、パーフロ
ロポリエーテルよりなることを特徴とする。
Means for Solving the Problems To solve the above problems, the rubber parts for automobile equipment according to the present invention are characterized by being made of perfluoropolyether.

【0009】本発明によれば、従来のフッ素ゴム、フロ
ロシリコーンなどの代りにパーフロロポリエーテルを使
用したため耐ガソリン性、耐アミン性、耐アルコール
性、耐MTBE性、耐油性さらには耐ガス透過性、耐熱
性、耐水性が良好で、しかも耐寒性にも優れた自動車用
ゴム部品となるという利点がある。
According to the present invention, gasoline resistance, amine resistance, alcohol resistance, MTBE resistance, oil resistance and gas permeation resistance are obtained because perfluoropolyether is used in place of conventional fluororubber and fluorosilicone. It has the advantage of being a rubber part for automobiles having good heat resistance, heat resistance and water resistance and also excellent cold resistance.

【0010】本発明による自動車機器用ゴム部品は、上
述のように、パーフロロポリエーテルよりなることを特
徴としており、基本的に限定されるものではないが、6
フッ化プロピレンをエーテル結合によって重合させた下
記の一般式のパーフロロポリエーテルよりなるものであ
るのが特に好ましい。
[0010] As described above, the rubber parts for automobile equipment according to the present invention are characterized by being made of perfluoropolyether, and are basically not limited thereto.
It is particularly preferable to use perfluoropolyether of the following general formula obtained by polymerizing propylene fluoride through an ether bond.

【0011】[0011]

【化2】 Embedded image

【0012】従来のフッ素ゴムは接触する相手材と粘着
・固着を引き起こしやすい点や、アルコール・MTBE
・ケトン等の燃料・溶剤によって大きく膨潤して使用に
耐えないという問題、さらには燃料油・潤滑油に添加さ
れているアミン系薬品によって著しい劣化を生じるとい
う難点がある。本発明で使用される、パーフロロポリエ
ーテルは上記全ての点において改良されたフッ素系ゴム
材料である。ポリマー主鎖の中にエーテル結合を有し、
かつ従来のようにフッ化ビニリデンを含まないため、優
れた低温柔軟性を有し、さらにはアルカリ雰囲気中での
脱フッ化水素による劣化が少ないという利点がある。さ
らに、アルコール、ケトンなどの極性溶媒の影響を受け
ないという利点もある。以下、パーフロロポリエーテル
の利点を取りまとめてフッ素ゴムと比較する。
[0012] Conventional fluororubber is liable to cause sticking and sticking with a contacting partner material, and alcohol / MTBE.
-There is a problem that the fuel or solvent such as ketone swells greatly and cannot withstand use, and further, there is a problem that the amine-based chemical added to the fuel oil or the lubricating oil causes significant deterioration. The perfluoropolyether used in the present invention is a fluorine-based rubber material improved in all of the above points. Having an ether bond in the polymer main chain,
In addition, since it does not contain vinylidene fluoride as in the prior art, it has the advantage of having excellent low-temperature flexibility and less deterioration due to dehydrofluorination in an alkaline atmosphere. In addition, there is an advantage that it is not affected by polar solvents such as alcohols and ketones. Hereinafter, advantages of perfluoropolyether are summarized and compared with fluororubber.

【0013】(1)耐寒性が従来の汎用フッ素ゴムに対
して約35℃、耐寒フッ素ゴムに対して約20℃良い。 (2)摩耗抵抗が小さく粘着が少ない。 (3)耐摩耗性が従来のフッ素ゴムよりも良い(特に耐
寒フッ素ゴムに比べて優れる)。 (4)アルコール・エーテル・ケトン・芳香族炭化水素
等のあらゆる溶剤類に対して膨潤が小さい。 (5)アミン系化合物による劣化が従来のフッ素ゴムと
比べて少ない。 (6)電気絶縁性が良い。 (7)耐水性・耐スチーム性が従来のフッ素ゴムやシリ
コーンゴムよりも優れる。 (8)耐熱性・耐圧縮永久歪性は従来の耐寒フッ素ゴム
と同等である。
(1) Cold resistance is about 35 ° C. better than conventional general-purpose fluoro rubber and about 20 ° C. better than cold-resistant fluoro rubber. (2) Low abrasion resistance and low adhesion. (3) Abrasion resistance is better than conventional fluororubber (particularly superior to cold fluororubber). (4) Swelling is small with respect to all solvents such as alcohols, ethers, ketones, and aromatic hydrocarbons. (5) Deterioration due to amine compounds is less than that of conventional fluororubber. (6) Good electrical insulation. (7) Water resistance and steam resistance are superior to conventional fluorine rubber and silicone rubber. (8) Heat resistance and compression set resistance are equivalent to those of conventional cold-resistant fluoro rubber.

【0014】上述のようなパーフロロポリエーテルのJ
ISA硬度は40〜90であるのが好ましく、特にシー
ル用途としては硬度70前後のものが、動的用途、たと
えばダイヤフラムなどには50前後の柔らかいものを使
用するのがよい。
The above-mentioned perfluoropolyether J
The ISA hardness is preferably from 40 to 90, and particularly, a material having a hardness of about 70 for a sealing use, and a soft material having a hardness of about 50 for a dynamic use, for example, a diaphragm, is preferably used.

【0015】[0015]

【実施例】JISA硬度70のパーフロロポリエーテル
を使用してJIS K6301に準拠した試験片を作製
した。これと同様な試験片を汎用フッ素ゴム、耐寒用フ
ッ素ゴムおよびフロロシリコーンで作製し、種々の試験
を行った。結果を表1および表2に示す。比較例1は2
元系フッ素ゴム(フッ化ビニリデン−6フッ化プロピレ
ン共重合体)、比較例2は耐寒性フッ素ゴム(フッ化ビ
ニリデン−6フッ化プロピレン−パーフロロビニルメチ
ルエーテル共重合体)、比較例3はフロロビニルメチル
シリコーンゴムを示す。
EXAMPLE A test piece according to JIS K6301 was prepared using perfluoropolyether having a JIS hardness of 70. Specimens similar to the above were prepared from general-purpose fluororubber, cold-resistant fluororubber and fluorosilicone, and subjected to various tests. The results are shown in Tables 1 and 2. Comparative Example 1 is 2
Comparative fluorine-containing rubber (vinylidene fluoride-6-propylene copolymer), Comparative Example 2 was a cold-resistant fluorine rubber (vinylidene fluoride-6-propylene-perfluorovinyl methyl ether copolymer), and Comparative Example 3 was 1 shows fluorovinyl methyl silicone rubber.

【0016】[0016]

【表1】 表1 [Table 1] Table 1

【0017】[0017]

【表2】 表2 [Table 2] Table 2

【0018】[0018]

【表3】 表2の続き [Table 3] Continued from Table 2

【0019】[0019]

【発明の効果】以上説明したように、本発明による自動
車用ゴム部品によれば、従来のフッ素ゴムなどの代りに
パーフロロポリエーテルを使用したため、耐ガソリン
性、耐アミン性、耐アルコール性、耐MTBE性、耐油
性さらには耐ガス透過性、耐熱性、耐水性が良好で、し
かも耐寒性にも優れた自動車用ゴム部品となるという利
点がある。
As described above, according to the rubber parts for automobiles according to the present invention, since perfluoropolyether is used instead of the conventional fluorine rubber, gasoline resistance, amine resistance, alcohol resistance, There is an advantage that the rubber component for automobiles has excellent MTBE resistance, oil resistance, gas permeation resistance, heat resistance, water resistance, and excellent cold resistance.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】パーフロロポリエーテルよりなることを特
徴とする自動車機器用ゴム部品。
1. A rubber part for automobile equipment, comprising a perfluoropolyether.
【請求項2】前記パーフロロポリエーテルは下記の一般
式のものであることを特徴とする請求項1記載の自動車
機器用ゴム部品。 【化1】
2. The rubber part for automobile equipment according to claim 1, wherein said perfluoropolyether has the following general formula. Embedded image
JP29154197A 1997-10-08 1997-10-08 Rubber part for automotive equipment Withdrawn JPH11106639A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29154197A JPH11106639A (en) 1997-10-08 1997-10-08 Rubber part for automotive equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29154197A JPH11106639A (en) 1997-10-08 1997-10-08 Rubber part for automotive equipment

Publications (1)

Publication Number Publication Date
JPH11106639A true JPH11106639A (en) 1999-04-20

Family

ID=17770250

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29154197A Withdrawn JPH11106639A (en) 1997-10-08 1997-10-08 Rubber part for automotive equipment

Country Status (1)

Country Link
JP (1) JPH11106639A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008144061A (en) * 2006-12-11 2008-06-26 Nok Corp Fluororubber composition and fluororubber crosslinked product

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008144061A (en) * 2006-12-11 2008-06-26 Nok Corp Fluororubber composition and fluororubber crosslinked product

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Legal Events

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A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 20050104