JPS6236431A - Fiber-reinforced elastomer - Google Patents

Fiber-reinforced elastomer

Info

Publication number
JPS6236431A
JPS6236431A JP17502885A JP17502885A JPS6236431A JP S6236431 A JPS6236431 A JP S6236431A JP 17502885 A JP17502885 A JP 17502885A JP 17502885 A JP17502885 A JP 17502885A JP S6236431 A JPS6236431 A JP S6236431A
Authority
JP
Japan
Prior art keywords
elastomer
fiber
compound
fibers
hardness
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
JP17502885A
Other languages
Japanese (ja)
Inventor
Shigenori Hamaoka
浜岡 重則
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.)
Inoac Corp
Original Assignee
Inoue MTP KK
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 Inoue MTP KK filed Critical Inoue MTP KK
Priority to JP17502885A priority Critical patent/JPS6236431A/en
Publication of JPS6236431A publication Critical patent/JPS6236431A/en
Pending legal-status Critical Current

Links

Landscapes

  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

PURPOSE:The titled elastomer excellent in moldability, creeping property, hardness, etc., obtained by kneading, orientating and molding an elastomer compound containing a small amount of an unsintered fine polytetrafluoroethylene powder and irradiating the molding with an ionizing radiation. CONSTITUTION:An elastomer compound is prepared by mixing an elastomer material such as natural rubber or synthetic rubber with 0.5-5wt%, base on the elastomer compound, unsintered fine polytetrafluoroethylene powder. This compound is kneaded with, e.g., a Bandury mixer to form fine fibers in the compound, extruded or similarly treated to orientate the fibers, molded into a predetermined shape by hot pressing or the like irradiated with an ionizing radiation of 0.1-10<2> Mrad to effect secondary crosslinking to strengthen the bond between the fiber and the elastomer matrix. In this way, a fiber-reinforced elastomer of a JIS a hardness of 40-90 can be obtained.

Description

【発明の詳細な説明】 (産業上の利用分野) この発明は、JISA硬度40〜90”の繊維強化エラ
ストマーに関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a fiber reinforced elastomer having a JISA hardness of 40 to 90''.

(従来の技術) 従来における繊維強化エラストマーには、積層タイプと
、短繊維補強タイプとがある。
(Prior Art) Conventional fiber-reinforced elastomers include a laminated type and a short fiber reinforced type.

積層タイプのものは、層状のエラストマーと、表面処理
を施した繊維層との積層体からなり、タイヤ、■ベルト
等に用いられている。このタイプのものは、強度に優れ
る反面、成形作業に手間取り、しかもエラストマ一層と
繊維層との接着性において問題があり、更にエラストマ
一層全体の補強とはなりにくい等の欠点を有するもので
ある。
The laminated type consists of a laminate of a layered elastomer and a surface-treated fiber layer, and is used for tires, belts, etc. Although this type of material has excellent strength, it takes time to mold, has problems with the adhesion between the elastomer layer and the fiber layer, and is difficult to reinforce the entire elastomer layer.

これに対して、短繊維補強タイプのものは、エラストマ
ー原料にポリエステル、ナイロン、炭素繊維等の短繊維
を配合、分散して成形加工したもので、ダンパー等の型
物、籾摺りロール等の高硬度品に用いられている。この
ものは、高硬度品に適し、且つ成形作業が容易である利
点を有するものの、クリープ特性に劣り、また分散性が
悪い為に短繊維の充填量が少量に制限されることから、
十分な補強効果が得られない場合もあり、しかも、物性
向上が然程期待できない等の問題もある。
On the other hand, short fiber reinforced type products are made by blending and dispersing short fibers such as polyester, nylon, carbon fiber, etc. into the elastomer raw material and molding them. Used in products. Although this material has the advantage of being suitable for high-hardness products and being easy to mold, it has poor creep properties and poor dispersibility, which limits the amount of short fibers to be filled.
There are also problems in that a sufficient reinforcing effect may not be obtained, and furthermore, improvement in physical properties cannot be expected to be appreciable.

このように、従来の繊維強化エラストマーには一長一短
があり、改良が求められていた。
As described above, conventional fiber-reinforced elastomers have advantages and disadvantages, and improvements have been sought.

(発明が解決しようとする問題点) この発明は前記の点に鑑みてなされたもので、成形作業
が容易で、且つクリープ特性の良好な、JISA硬度4
0〜90°の繊維強化エラストマーの提供を目的とする
(Problems to be Solved by the Invention) This invention has been made in view of the above points, and is a JISA hardness 4 material that is easy to mold and has good creep properties.
The purpose is to provide a fiber-reinforced elastomer with an angle of 0 to 90 degrees.

(問題点を解決するための手段) この発明の要旨は、未焼成ポリ四フッ化エチレンファイ
ンパウダーを0.5〜5.0重量%含むエラストマーコ
ンパウンドを混練し、配向させ、ホットプレス等により
所定形状とした後に0.1〜12Mradの電離性放射
線を照射してなるJISA硬度40〜90°の繊維強化
エラストマーにある。
(Means for Solving the Problems) The gist of the present invention is to knead an elastomer compound containing 0.5 to 5.0% by weight of unfired polytetrafluoroethylene fine powder, orient it, and prepare it into a predetermined shape by hot pressing or the like. It is a fiber-reinforced elastomer having a JISA hardness of 40 to 90°, which is formed by irradiating ionizing radiation of 0.1 to 12 Mrad after shaping.

(作用) 未焼成ポリ四フッ化エチレンファインパウダーは、その
化学構造の特性から、応力が加えられろことにより、及
び配向により微細な繊維状に分岐する佐賀を有する。
(Function) Unfired polytetrafluoroethylene fine powder, due to its chemical structure, has sagata that branch into fine fibers when stress is applied and due to orientation.

この未焼成ポリ四フッ化エチレンファインパウダーを0
65〜5.0重量%含み、必要に応じて可塑剤、加硫剤
等の添加剤が配合されたエラストマーコンパランドラ、
バンバリー、ニーダ、ロール等で混練すると、混練時の
剪断作用により応力が働き、微細な繊維がエラストマー
コンパウダー内に発生する。
This unfired polytetrafluoroethylene fine powder is
an elastomer comparandra containing 65 to 5.0% by weight and optionally containing additives such as a plasticizer and a vulcanizing agent;
When kneading with a banbury, kneader, roll, etc., stress is applied due to the shearing action during kneading, and fine fibers are generated within the elastomer compound powder.

そして、そのコンパウンドを圧延ロール、カレンダー、
押し出し等により配向させると、先に発生した微細な繊
維がよ、り完全なものとなる。
Then, the compound is rolled, calendered,
When oriented by extrusion or the like, the previously generated fine fibers become more complete.

このようにして得られた成形素材をホットプレス等によ
り所定形状としたものは、成形素材中の繊維がフッ素系
からなる為に、繊維とエラストマーマトリックスとの結
合性が乏しく、静的試験下では良好な物性を得ることが
できても、実際の動的使用下では、エラストマーマトリ
ックスにズレを生じ、良好な物性を得ることができない
ものである。
When the molded material obtained in this way is formed into a predetermined shape by hot pressing, etc., the fibers in the molded material are made of fluorine, so the bonding between the fibers and the elastomer matrix is poor, and under static tests. Even if good physical properties can be obtained, under actual dynamic use, the elastomer matrix will shift, making it impossible to obtain good physical properties.

そこで、その成形物に、O,l 〜lO2!、1rad
の電離性放射線を照射することにより二次架橋を行ない
、繊維とエラストマーマトリックスとの結合を強固とし
たのである。
Therefore, O,l~lO2! , 1rad
By irradiating the fibers with ionizing radiation, secondary crosslinking was performed to strengthen the bond between the fibers and the elastomer matrix.

未焼成ポリ四フッ化エチレンファインパウダーの添加量
は、エラストマーコンパウンドに対して0.5重量%未
満では顕著な効果を得ることができず、又、5.0重量
%を超えると分散性の点で問題があり、0.5〜5.0
 重量%とするのが好ましい。
If the amount of unfired polytetrafluoroethylene fine powder added is less than 0.5% by weight based on the elastomer compound, no significant effect will be obtained, and if it exceeds 5.0% by weight, the dispersibility will deteriorate. There is a problem with 0.5 to 5.0
Preferably, it is expressed as % by weight.

二次架橋を生じさせるT線等の電離性放射線の照射量は
、0. IMrad未満では期待する効果が得られず、
又、12Mradを超えると、今度はその効果が殆ど変
わらなくなるので、0. IMrad 〜10” Mr
adとするのが好ましい。
The irradiation dose of ionizing radiation such as T-rays that causes secondary crosslinking is 0. If it is less than IMrad, the expected effect will not be obtained,
Also, if it exceeds 12 Mrad, the effect will hardly change, so 0. IMrad ~10”Mr
It is preferable to set it as ad.

(実施例) この発明におけるエラストマーコンパウンドを構成する
エラストマー素材としては、天然又は合成エラストマー
、例えは天然ゴム(NR)、イソプレンゴム(IR)、
ニトリルゴム(NBR)、ブタジェンゴム(BR)、ク
ロロプレンゴム(CR)、シリコンゴム、ウレタンゴム
、スチレン−ブタジェンゴム(SBR)、エチレン−プ
ロピレンクーポリマー(EPT)、ブチルゴム(IIR
)、フッ素ゴム、塩化ビニル樹脂(PVC)等が用いら
れる。
(Example) The elastomer materials constituting the elastomer compound in this invention include natural or synthetic elastomers, such as natural rubber (NR), isoprene rubber (IR),
Nitrile rubber (NBR), butadiene rubber (BR), chloroprene rubber (CR), silicone rubber, urethane rubber, styrene-butadiene rubber (SBR), ethylene-propylene copolymer (EPT), butyl rubber (IIR)
), fluororubber, vinyl chloride resin (PVC), etc. are used.

第1表及び第2表は、各種エラストマー素材を用いるこ
の発明実施品と、その実施品と同一エラストマー素材を
用い、未焼成ポリ四フッ化エチレンを含まない成形品に
対する物性値を比較したものである。
Tables 1 and 2 compare the physical property values of products implementing this invention using various elastomer materials and molded products using the same elastomer materials as the implementation products but not containing unfired polytetrafluoroethylene. be.

第1表 第2表 この発明実施品は、未焼成ポリ四フッ化エチレンを含ま
ない成形品と比べると、100%モジュラスにおいて格
段に優れた値を示し、又、クリープ特性の目安となる1
00%永久伸においては同等の値を示したものである。
Table 1 Table 2 The products of this invention exhibited a much superior value in terms of 100% modulus compared to molded products that do not contain unfired polytetrafluoroethylene.
00% permanent elongation showed equivalent values.

即ち、この発明実施品は、繊維強化されたものであるに
もかかわらず、クリープ特性の低下を来たさず、非強化
エラストマーと同等のクリープ特性を有するもので、従
来の短繊維補強タイプエラストマーと比べると、優れた
クリープ特性を有するものである。
In other words, although the product of the present invention is fiber-reinforced, its creep properties do not deteriorate, and it has creep properties equivalent to non-reinforced elastomers, and is superior to conventional short fiber-reinforced elastomers. It has excellent creep properties compared to

(発明の効果) この発明による繊維強化エラストマーは、前記のように
クリープ特性に優れる効果を有し、その硬度がJISA
硬度40〜90°であることから、ベルト、ロール、タ
イヤ等の幅広い分野に使用可能なものである。又、その
成形が、従来の積層タイプにおける繊維層を積層させる
ための複雑な作業を必要とせず、簡単な混練り、配向作
業で済む効果もある。
(Effects of the Invention) The fiber-reinforced elastomer according to the present invention has excellent creep properties as described above, and its hardness is JISA
Since it has a hardness of 40 to 90 degrees, it can be used in a wide range of fields such as belts, rolls, and tires. Further, the molding process does not require the complicated work of laminating fiber layers in the conventional laminated type, and has the effect of requiring only simple kneading and orientation work.

Claims (1)

【特許請求の範囲】[Claims] 未焼成ポリ四フッ化エチレンファインパウダーを0.5
〜5.0重量%含むエラストマーコンパウンドを混練し
、配向させ、所定形状とした後に、0.1〜1^2Mr
adの電離性放射線を照射してなるJISA硬度40〜
90°の繊維強化エラストマー。
0.5 unfired polytetrafluoroethylene fine powder
After kneading an elastomer compound containing ~5.0% by weight, orienting it, and forming it into a predetermined shape, 0.1~1^2Mr
JISA hardness 40~ made by irradiating ad ionizing radiation
90° fiber reinforced elastomer.
JP17502885A 1985-08-09 1985-08-09 Fiber-reinforced elastomer Pending JPS6236431A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17502885A JPS6236431A (en) 1985-08-09 1985-08-09 Fiber-reinforced elastomer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17502885A JPS6236431A (en) 1985-08-09 1985-08-09 Fiber-reinforced elastomer

Publications (1)

Publication Number Publication Date
JPS6236431A true JPS6236431A (en) 1987-02-17

Family

ID=15988953

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17502885A Pending JPS6236431A (en) 1985-08-09 1985-08-09 Fiber-reinforced elastomer

Country Status (1)

Country Link
JP (1) JPS6236431A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005042599A1 (en) * 2003-10-30 2005-05-12 Leibniz-Institut Für Polymerforschung Dresden E.V. Radically coupled ptfe polymer compounds and method for the production thereof
WO2005092938A1 (en) * 2004-03-29 2005-10-06 Leibniz-Institut Für Polymerforschung Dresden E.V. Radically coupled perfluoropolymer-polymer materials and method for producing the same
US7790780B2 (en) 2003-10-30 2010-09-07 Leibniz-Institut Fuer Polymerforschung Dresden E.V. Radically coupled PTFE polymer powders, and method for the production thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005042599A1 (en) * 2003-10-30 2005-05-12 Leibniz-Institut Für Polymerforschung Dresden E.V. Radically coupled ptfe polymer compounds and method for the production thereof
JP2007510027A (en) * 2003-10-30 2007-04-19 ライプニッツ−インスティチュート フュア ポリマーフォルシュング ドレスデン エーファウ Radical-bonded PTFE polymer compound and method for producing the same
US7759441B2 (en) * 2003-10-30 2010-07-20 Leibniz-Institut Fuer Polymerforschung Dresden E.V. Radically coupled PTFE polymer compounds and method for the production thereof
US7790780B2 (en) 2003-10-30 2010-09-07 Leibniz-Institut Fuer Polymerforschung Dresden E.V. Radically coupled PTFE polymer powders, and method for the production thereof
US8030367B2 (en) 2003-10-30 2011-10-04 Leibniz-Institut Fuer Polymerforschung Dresden E.V. Radically coupled PTFE polymer powder and method for the production thereof
JP4928267B2 (en) * 2003-10-30 2012-05-09 ライプニッツ−インスティチュート フュア ポリマーフォルシュング ドレスデン エーファウ Radical-bonded PTFE polymer compound and method for producing the same
US8648149B2 (en) 2003-10-30 2014-02-11 Leibniz-Institut Fuer Polymerforschung Dresden E.V. Radically coupled PTFE polymer compounds and method for the production thereof
WO2005092938A1 (en) * 2004-03-29 2005-10-06 Leibniz-Institut Für Polymerforschung Dresden E.V. Radically coupled perfluoropolymer-polymer materials and method for producing the same

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