JPS61253A - Fluororubber composition - Google Patents
Fluororubber compositionInfo
- Publication number
- JPS61253A JPS61253A JP11975284A JP11975284A JPS61253A JP S61253 A JPS61253 A JP S61253A JP 11975284 A JP11975284 A JP 11975284A JP 11975284 A JP11975284 A JP 11975284A JP S61253 A JPS61253 A JP S61253A
- Authority
- JP
- Japan
- Prior art keywords
- fluororubber
- rubber
- composition
- processability
- roll
- 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
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はフッ素ゴム組成物に関し、詳しくは特定フッ素
ゴムを混合してゴム分とすることによって、未加硫時加
工性、特にロール加工性が良好で、かつ耐酸性、加硫特
性に優れたフッ素ゴム組成物に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fluororubber composition, and more specifically, by mixing a specific fluororubber to form a rubber component, the composition has good processability when unvulcanized, particularly roll processability, and acid resistance. , relates to a fluororubber composition with excellent vulcanization properties.
従来、鉄面のライニング材どしてフッ素ゴムが用いられ
、鉄面に接着剤を介して加硫接着させる。Conventionally, fluororubber has been used as a lining material for iron surfaces, and is vulcanized and bonded to the iron surface with an adhesive.
ここに用いられるフッ素ゴムとしＣは、耐酸性を向上さ
せるといった見地から４フッ化エチレン・プロピレン系
共重合体ゴムが用いられていた。The fluororubber C used here was a tetrafluoroethylene/propylene copolymer rubber from the viewpoint of improving acid resistance.
しかしながら、この４フッ化エチレン・プロピレン共重
合体ゴムは、未加硫時の加工性、特にフッ素ゴム組成物
を混練して、シートを分出しする際のロール加工性に関
し、次のような欠点がある。However, this tetrafluoroethylene/propylene copolymer rubber has the following drawbacks regarding processability when unvulcanized, particularly regarding roll processability when kneading the fluororubber composition and dispensing sheets. There is.
■：配合剤の種類やロール混線時の温度によって、加工
性が大きく左右され、均一なものが得られない。■: Workability is greatly affected by the type of compounding agent and the temperature at the time of roll cross-wiring, and a uniform product cannot be obtained.
■：粘度の低い４フッ化エチレン・プロピレン系共重合
体ゴムを用いるとロールへの粘着化傾向が強く、また粘
度の高い４フッ化エチレン・プロピレン系共重合体ゴム
を用いるとロールの巻き付は性が悪く、混線時にタレを
生じる。■: If a tetrafluoroethylene/propylene copolymer rubber with low viscosity is used, there is a strong tendency to stick to the roll, and if a high viscosity tetrafluoroethylene/propylene copolymer rubber is used, the roll will become stuck. has poor performance and causes sagging when mixed.
上記のような４フッ化エチレン・プロピレン共重合体ゴ
ムを用いた場合のロール加工性を改良するために種々の
提案がなされ、例えば液状ポリブテン、液状フッ素ゴム
等の配合剤を配合することが行なわれているが、このよ
うな配合剤を加えた場合には、常温時のロール加工性は
改善されるものの、高温時のロール加工性や耐酸性、加
硫特性が低下するという欠点がある。このように、未加
硫時のロール加工性や耐酸性、加硫特性に優れた鉄面等
のライニング材等に用いられるフッ素ゴム組成物は未だ
得られていないというのが現状である。Various proposals have been made to improve the roll processability when using the above-mentioned tetrafluoroethylene/propylene copolymer rubber, such as adding compounding agents such as liquid polybutene and liquid fluororubber. However, when such compounding agents are added, although the roll processability at room temperature is improved, there is a drawback that the roll processability, acid resistance, and vulcanization properties at high temperatures are reduced. As described above, the current situation is that a fluororubber composition for use in lining materials for iron surfaces and the like that has excellent roll processability, acid resistance, and vulcanization properties when unvulcanized has not yet been obtained.
本発明は、上述の問題点を解決すべくなされたものであ
り、未加硫時のロール加工性が良好で、かつ耐酸性、加
硫特性に優れたフッ素ゴム組成物を提供することを目的
とし、特に鉄面等のライニング材として好適に利用され
る。The present invention was made to solve the above-mentioned problems, and an object of the present invention is to provide a fluororubber composition that has good roll processability when unvulcanized, and has excellent acid resistance and vulcanization properties. It is especially suitable for use as a lining material for iron surfaces.
本発明者は、上記目的に沿って鋭意研究した結果、フッ
素ゴム組成物のゴム分どして４フッ化エチレン・プロピ
レン系共重合体ゴムと２７フ化エチレン・ ６フッ化プ
ロピレン系共重合体ゴムおよび／または２フッ化エチレ
ン・ ６フッ化プロピレン・ ４フフ化エチレン系三元
共重合体ゴムを特定割合で併用することによって、耐酸
性、加硫特性） に優れ、しかも未加硫時の
加工性、特にロール加工性が良好なフッ素ゴム組成物が
得られることを見出し本発明に至った。As a result of intensive research in line with the above objectives, the present inventors separated the rubber of a fluororubber composition into a tetrafluoroethylene/propylene copolymer rubber and a 27-fluoroethylene/hexafluoropropylene copolymer. By using rubber and/or difluoroethylene, hexafluoropropylene, and tetrafluoroethylene terpolymer rubber in a specific ratio, it has excellent acid resistance and vulcanization properties, and also has excellent vulcanization properties when unvulcanized. The inventors have discovered that a fluororubber composition with good processability, particularly roll processability, can be obtained, leading to the present invention.
すなわち本発明は、４フッ化エチレン・プロピレン系共
重合体ゴム３０〜９５重量％と２フッ化エチレン・ ６
フッ化プロピレン系共重合体ゴムまたは２フッ化エチレ
ン・ ６フッ化プロピレン・ ４フッ化エチレン系三元
共重合体ゴム７０−５重量％をゴム分とすることを特徴
とするフッ素ゴム組成物にある。That is, the present invention comprises 30 to 95% by weight of tetrafluoroethylene/propylene copolymer rubber and 6% by weight of difluoroethylene/propylene copolymer rubber.
A fluororubber composition characterized in that the rubber content is 70-5% by weight of a fluorinated propylene copolymer rubber or a difluorinated ethylene/hexafluorinated propylene/tetrafluorinated ethylene terpolymer rubber. be.
本発明のフッ素ゴム組成物は、ゴム分として４フッ化エ
チレン・プロピレン系共重合体ゴムと２フッ化エチレン
・ ６フッ化プロピレン系共重合体ゴムおよび／または
２フッ化エチレン・ ６フッ化プロピレン・ ４フッ化
エチレン系三元共重合体ゴムを特定割合で併用する。The fluororubber composition of the present invention contains tetrafluoroethylene/propylene copolymer rubber, difluoroethylene/hexafluoropropylene copolymer rubber, and/or difluoroethylene/hexafluoropropylene as rubber components. - Use a specific proportion of tetrafluoroethylene terpolymer rubber.
本発明で使用する４−フッ化エチレン・プロピレン系共
重合体ゴム（以下、フッ素ゴム（Ｉ）という）は下記の
構造を有する。The 4-fluorinated ethylene/propylene copolymer rubber (hereinafter referred to as fluororubber (I)) used in the present invention has the following structure.
（商品名： ＪＳＲアフラス１５０Ｐ、旭硝子社製）ま
た、２フッ化１チレン・ ６フッ化プロピレン系共重合
体ゴム（以下、フッ素ゴム（ｎ）という）は、下記の構
造式を有する。(Product name: JSR Aflas 150P, manufactured by Asahi Glass Co., Ltd.) Furthermore, monotyrene difluoride/propylene hexafluoride copolymer rubber (hereinafter referred to as fluororubber (n)) has the following structural formula.
（商品名：ダイエルＧ３０１またはＧ３０１Ｌ、ダイキ
ン工業社製）
さらに、２フッ化エチレン・ ６フッ化プロピレン・
４フッ化エチレン系三元共重合体ゴム（以下、フッ素ゴ
ム（Ｉ［［）という）は下記の構造を有する。(Product name: Daiel G301 or G301L, manufactured by Daikin Industries, Ltd.) In addition, difluoroethylene, hexafluoropropylene,
Tetrafluoroethylene terpolymer rubber (hereinafter referred to as fluororubber (I[[)) has the following structure.
（商品名：ダイエルＧ９０１またはＧｅＯ２、ダイキン
工業社製、商品名：Ｖｉｔｏｎ ＧＦ、デュポン社製
）。(Product name: Dai-El G901 or GeO2, manufactured by Daikin Industries, Ltd., product name: Viton GF, manufactured by DuPont).
これらフッ素ゴム（ＩＩ）および／またはフッ素ゴム（
Ｉｌｌ）は分子量１万〜２０万、好ましくは３万〜１５
万のものが使用される。These fluororubber (II) and/or fluororubber (
Ill) has a molecular weight of 10,000 to 200,000, preferably 30,000 to 15
Thousands of things are used.
本発明のフッ素ゴム組成物において、ゴム分中のフッ素
ゴム（Ｉ）とフッ素ゴム（ＩＩ）および／またはフッ素
ゴム（ＩＩＩ）の含有割合は、フッ素ゴム＜ ｉ ＞
３０〜９５重量％、好ましくは５０〜９０重量％、フッ
素ゴム（Ｉｆ）および／またはフッ素ゴム（Ｉ）７０〜
５重量％、好ましくは５０〜７０重量％である。In the fluororubber composition of the present invention, the content ratio of fluororubber (I) and fluororubber (II) and/or fluororubber (III) in the rubber component is fluororubber <i>
30 to 95% by weight, preferably 50 to 90% by weight, fluororubber (If) and/or fluororubber (I) 70 to
5% by weight, preferably 50-70% by weight.
フッ素ゴム（Ｉ）および／またはフッ素ゴム（ＩＩＩ）
の含有量が５重量％未満ではロール加工性が改善されず
、７０重量％を越えるとロールへの粘着性が強まり、加
工性が低下するため、それぞれ好ましくない。Fluororubber (I) and/or fluororubber (III)
If the content is less than 5% by weight, the roll processability will not be improved, and if it exceeds 70% by weight, the adhesion to the roll will become stronger and the processability will decrease, which is not preferable.
本発明のフッ素ゴム組成物は、フッ素ゴム（Ｉ）とフッ
素ゴム（Ｉｔ）および／またはフッ素ゴム（Ｉ［［）に
種々の配合剤を配合することにより得られる。配合剤と
しては、例えばカーボンブラック、過酸化物、軟化剤、
酸化防止剤、老化防止剤等が例示され、これら配合剤は
必要に応じて適量配合される。The fluororubber composition of the present invention is obtained by blending fluororubber (I), fluororubber (It), and/or fluororubber (I[[) with various compounding agents. Examples of compounding agents include carbon black, peroxide, softeners,
Antioxidants, anti-aging agents, etc. are exemplified, and these compounding agents are blended in appropriate amounts as necessary.
次に、本発明を実施例および比較例によって詳細に説明
する。なお、第１表中の配合数値は重量部である。Next, the present invention will be explained in detail with reference to Examples and Comparative Examples. In addition, the formulation values in Table 1 are parts by weight.
実施例１〜６および比較例１〜５
第１表に示す配合および配合割合でフッ素ゴム組成物を
調製した。このフッ素ゴム組成物のムーニー粘度（ＭＬ
、＋４．７００℃）を測定し、結果を第２表に示した。Examples 1 to 6 and Comparative Examples 1 to 5 Fluororubber compositions were prepared using the formulations and proportions shown in Table 1. Mooney viscosity (ML) of this fluororubber composition
, +4.700°C) and the results are shown in Table 2.
また、このフッ素ゴム組成物混練時のロール加工性（粘
着性、巻付性、シート肌）について、ロール温度２０℃
、７０℃でそれぞれ評価し、加工性の良好なものを０１
加工性に少々問題があるものを△、加工性不良のものを
×とした。In addition, regarding the roll processability (adhesiveness, wrapability, sheet texture) during kneading of this fluororubber composition, the roll temperature was 20°C.
, evaluated at 70℃, and those with good workability were evaluated as 01.
Those with slight problems in workability were rated △, and those with poor workability were rated ×.
それぞれの結果を第２表に示した。The results are shown in Table 2.
このフッ素ゴム組成物に １６０℃で６０分プレス加硫
し、得られた加硫ゴムの加硫特性を評価した。This fluororubber composition was press-vulcanized at 160° C. for 60 minutes, and the vulcanization characteristics of the resulting vulcanized rubber were evaluated.
加硫特性の評価は引張り強度、伸び、硬さについて行な
い、ＪＩＳ Ｋ ６３０１に準拠して行なった。Vulcanization properties were evaluated for tensile strength, elongation, and hardness in accordance with JIS K 6301.
結果を第２表に示した。また、耐酸性を評価すべく、こ
の加硫ゴムを塩酸、硝酸、フッ酸中に所定時間、所定量
、浸漬した後、加硫特性を測定した。The results are shown in Table 2. Further, in order to evaluate acid resistance, the vulcanized rubber was immersed in hydrochloric acid, nitric acid, or hydrofluoric acid for a predetermined amount of time for a predetermined amount of time, and then the vulcanization characteristics were measured.
裏 ０の加硫特性の変化率を第３表に示した・
第２表に示されるごどく、本発明のフッ素ゴム組成物て
・・あるゴム分としてフッ素ゴム（丁）とフッ素ｆｌ＼
（ＩＦ）またはフッ素ゴム（ＩＩＩ）を併用して用いた
実茄例１〜６は、ロール加工性も加硫特性も好ましいｆ
ｌＧ囲にある３、これに対して、高粘度、中粘度のフッ
素ゴム（Ｉ）のみをゴム分とした比較例１・〜２は常温
でのロール加工性に劣る。また、低粘度のフッ素ゴム（
１）をゴム分とした比較例３は常温でのロール加工性は
好ましいものの、高温での［１−ル加１丁性に劣り、引
張り強度も低い。Table 3 shows the rate of change in the vulcanization properties of back 0.
As shown in Table 2, the fluororubber composition of the present invention has fluororubber (di) and fluorine fl\ as certain rubber components.
Fruit Examples 1 to 6 using (IF) or fluororubber (III) have favorable roll processability and vulcanization properties.
Comparative Examples 1 and 2, in which only high-viscosity and medium-viscosity fluororubber (I) was used as the rubber component, were inferior in roll processability at room temperature. In addition, low viscosity fluororubber (
Comparative Example 3 in which 1) was used as a rubber component had good roll processability at room temperature, but had poor rollability and low tensile strength at high temperatures.
さらに、フッ素ゴム（Ｉ＞に液状フッ素ゴムやポリブテ
ンを配合した比較例４および５は常温でのロール加工性
は好ましいものの、高温でのロール加工性に劣り、引張
り強度、硬度も低い。Further, Comparative Examples 4 and 5, in which liquid fluororubber or polybutene was blended with fluororubber (I>), have good roll processability at room temperature, but are poor in roll processability at high temperatures, and have low tensile strength and hardness.
また、第３表に示されるごとく、フッ素ゴム（Ｉ＞に液
状フッ素ゴムやポリブテンを配合した比較例４および５
は加硫特性の変化率が著しく、１ ｉｔ ｌｌｆ
ｔ！１″″０゜以上説明したごとく、フッ素ゴム（Ｉ
）とフッ素ゴム（ｎ）および／またはフッ素ゴム（Ｉ［
［）を特定割合でゴム分とする本発明のフッ素ゴム組成
物は、未加硫時の加工性、特にロール加工性が良好であ
るのみならず、耐酸性や加硫特性も優れている。従って
、本発明のフッ素ゴム組成物は鉄面等のライニング月と
して好適に利用できるほか広範な範囲に使用される。In addition, as shown in Table 3, Comparative Examples 4 and 5 in which liquid fluororubber and polybutene were blended with fluororubber (I)
The rate of change in vulcanization properties is remarkable, and 1 it llf
T! As explained above, fluororubber (I
) and fluororubber (n) and/or fluororubber (I[
The fluororubber composition of the present invention containing a specific proportion of [) as a rubber component not only has good processability when unvulcanized, especially roll processability, but also has excellent acid resistance and vulcanization properties. Therefore, the fluororubber composition of the present invention can be suitably used as a lining for iron surfaces, etc., and can also be used in a wide range of applications.
Claims (1)
〜９５重量％と２フッ化エチレン・６フッ化プロピレン
系共重合体ゴムまたは２フッ化エチレン・６フッ化プロ
ピレン・４フッ化エチレン系三元共重合体ゴム７０〜５
重量％をゴム分とすることを特徴とするフッ素ゴム組成
物。1,4 fluorinated ethylene/propylene copolymer rubber 30
~95% by weight and ethylene difluoride/propylene hexafluoride copolymer rubber or ethylene difluoride/propylene hexafluoride/tetrafluoroethylene terpolymer rubber 70-5
A fluororubber composition characterized in that % by weight is rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11975284A JPS61253A (en) | 1984-06-13 | 1984-06-13 | Fluororubber composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11975284A JPS61253A (en) | 1984-06-13 | 1984-06-13 | Fluororubber composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61253A true JPS61253A (en) | 1986-01-06 |
Family
ID=14769274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11975284A Pending JPS61253A (en) | 1984-06-13 | 1984-06-13 | Fluororubber composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61253A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4875110A (en) * | 1985-10-09 | 1989-10-17 | Hitachi Ltd. | Rotary head apparatus with motor magnet and yoke surrounding motor stator coil |
| US5407759A (en) * | 1989-09-14 | 1995-04-18 | Yamaha Hatsudoki Kabushiki Kaisha | Gasket for fuel cell |
| JP2000119468A (en) * | 1998-10-16 | 2000-04-25 | Nippon Valqua Ind Ltd | Fluoroelastomer composition, its crosslinking product, and its use |
| CN110218405A (en) * | 2019-05-10 | 2019-09-10 | 上海杜实新材料科技有限公司 | A kind of fluoro-rubber composite of hydrogen sulfide corrosion-resistant and its application |
-
1984
- 1984-06-13 JP JP11975284A patent/JPS61253A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4875110A (en) * | 1985-10-09 | 1989-10-17 | Hitachi Ltd. | Rotary head apparatus with motor magnet and yoke surrounding motor stator coil |
| US5407759A (en) * | 1989-09-14 | 1995-04-18 | Yamaha Hatsudoki Kabushiki Kaisha | Gasket for fuel cell |
| JP2000119468A (en) * | 1998-10-16 | 2000-04-25 | Nippon Valqua Ind Ltd | Fluoroelastomer composition, its crosslinking product, and its use |
| CN110218405A (en) * | 2019-05-10 | 2019-09-10 | 上海杜实新材料科技有限公司 | A kind of fluoro-rubber composite of hydrogen sulfide corrosion-resistant and its application |
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