JPH0292945A - Low-moisture permeable rubber composition - Google Patents

Low-moisture permeable rubber composition

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Publication number
JPH0292945A
JPH0292945A JP24867588A JP24867588A JPH0292945A JP H0292945 A JPH0292945 A JP H0292945A JP 24867588 A JP24867588 A JP 24867588A JP 24867588 A JP24867588 A JP 24867588A JP H0292945 A JPH0292945 A JP H0292945A
Authority
JP
Japan
Prior art keywords
ethylene
propylene
rubber composition
rubber
talc
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
JP24867588A
Other languages
Japanese (ja)
Inventor
Masashi Aoshima
正志 青嶋
Mitsuhiko Sato
光彦 佐藤
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.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical 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 Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP24867588A priority Critical patent/JPH0292945A/en
Publication of JPH0292945A publication Critical patent/JPH0292945A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To obtain a rubber composition excellent in low moisture permeability and tensile strength and heat resistance after vulcanization by blending an ethylene.propylene.nonconjugated polyene copolymer rubber with talc at a high filling ratio using an organic peroxide as a crosslinking agent. CONSTITUTION:A rubber composition obtained by blending (A) 100 pts.wt. ethylene copolymer rubber, consisting of ethylene, propylene and a nonconjugated polyene which is 5-ethylidene-2-norbornene and/or dicyclopentadiene with 4-8mol% content thereof at (50/50)-(95/5), preferably (70/30)-(80/20) molar ratio of ethylene/propylene with (B) 50-300 pts.wt. talc and (C) preferably 1-5 pts.wt. organic peroxide.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明ζよイ氏透湿性ここすく−れ、力)つ力0硫″I
麦の弓Iり4洩度や面寸熱性ζ;も優れたゴム組成物ζ
こ関するもので、更に詳しくは架橋剤として有機過酸化
物を用いて、エチレン−プロピレン−1e共9受ボ1ツ
工ン共重合体ゴムaこタルクを高充填で配合したゴム組
成物に関するものであるエチレン−プロピレン共重合体
ゴムは耐熱性、耐寒性〜耐候性〜電気絶縁性に優れ自動
車部品、工業用品、電気部品等に利用され〜例えば、ソ
ケットカバー−耐熱ホースー電線コンデンサーキャップ
、耐熱ベルト、ライニング、ウェザ−ストリップ、防振
ゴム−各種パツキン〜ス側ンジ等に利用できる。
[Detailed Description of the Invention] <Industrial Application Field> The present invention has moisture permeability, strength, strength, strength, 0 sulfur, and strength.
Rubber composition with excellent leakage rate and surface heat resistance.
More specifically, it relates to a rubber composition containing a highly filled ethylene-propylene-1e co9-button copolymer rubber a-talc using an organic peroxide as a crosslinking agent. Ethylene-propylene copolymer rubber has excellent heat resistance, cold resistance, weather resistance, and electrical insulation properties, and is used in automobile parts, industrial products, electrical parts, etc. For example, socket covers, heat-resistant hoses, wire condenser caps, heat-resistant belts. It can be used for linings, weather strips, anti-vibration rubber, various gaskets, side panels, etc.

〈従来の技術〉 エチレン−プロピレン共重合体ゴム(EPDM)jよそ
のすく゛れた停寺・院〜たとえ?、よ゛而寸熱゛注耐候
性、耐オゾン性、電気絶縁特性、耐薬品性等を生かして
、建築材料、電線材料−自動車部品等の多くの用途に用
いられていることカー19−口られて(″する。
<Conventional technology> Ethylene-propylene copolymer rubber (EPDM) Due to its weather resistance, ozone resistance, electrical insulation properties, chemical resistance, etc., it is used in many applications such as building materials, electric wire materials, and automobile parts. be done (“to be done”)

しかしながら、このようなエチレン−プロピレン非共役
ポリエン共重合体ゴムの透湿性は必ずし屯溝足できる領
域には至っておらず現在は、水分を透過しにくくする為
には架橋密度を上げ、硫黄をやや条目にしてタイトに加
硫させる方法やタルクのような白色充填剤を多量に配合
する方法があるが、前者の方法では耐熱性の点で非常に
問題となり〜後者の方?去でaよ、カロ硫ゴムの機械自
り3虫度、特ζこ弓1弓長破断点応力が低下するという
欠点が生じる。
However, the moisture permeability of such ethylene-propylene non-conjugated polyene copolymer rubber has not necessarily reached the level where it can be achieved, and currently, in order to make it difficult for moisture to pass through, it is necessary to increase the crosslink density and add sulfur. There are two methods: vulcanizing it tightly by making it into slightly stripes, and adding a large amount of white filler such as talc, but the former method poses a serious problem in terms of heat resistance.The latter method? However, there is a drawback that the mechanical strength of Karo sulfur rubber is 3 degrees, and the stress at the break point of the bow length is reduced.

〈発明が解決しようとする課題〉 本発明こよ、エチレン−プロピレン−#μ共9受ポリエ
ン共重合体の面仕熱・注や面寸寒・注〜弓1g長弓蛍度
等を実用上問題ないレベルで維持したうえで〜透湿性を
改良したゴム組成物を提供するものである。
<Problems to be Solved by the Invention> The present invention solves practical problems such as surface heat, heat, surface cold, and longbow fluorescence of 1 g of bow of the ethylene-propylene-#μ copolyene copolymer. The present invention provides a rubber composition with improved moisture permeability while maintaining the moisture permeability at a low level.

く課題を解決するための手段〉 本発明者らは〜イ氏透湿性に優れたエチレン−プロピレ
ン峠非共櫂受ポリエン共重合体ゴムについて鋭意検討し
た結果−二の目的を達成するエチレン−プロピレン−非
共役ポリエン共重合体ゴム組成物を見い出した。
Means for Solving the Problems The present inventors have conducted extensive studies on ethylene-propylene non-coated polyene copolymer rubber with excellent moisture permeability. -A non-conjugated polyene copolymer rubber composition has been discovered.

すなわち、本発明は、 (A>エチレン−プロピレンおよび非共役ポリエンとか
らなり、 (a)#詫共を分ポリエンカイ5−エチリデン−2−ノ
ルボルネン ンタジェンであり〜その含量が4〜8モル%で〜 (b)エチレン/プロピレン比(モノL/j:ヒ)カゴ
、5 0 / 5 0ないし9515であるエチレン共
重合体ゴム x o o xm部に対し、(B)タルク
を50〜300!量部〜 (C)荀機過酸化物 を配合してなることを特徴とする低透湿性に優れたゴム
組成物に間するものである。
That is, the present invention provides (A>consisting of ethylene-propylene and a non-conjugated polyene, (a) a polyene 5-ethylidene-2-norbornene entadiene whose content is 4 to 8 mol%. ~(b) Ethylene/propylene ratio (mono L/j:H) Basket, 50 to 300! amount of (B) talc to x o o x m parts of ethylene copolymer rubber having an ethylene/propylene ratio of 50/50 to 9515. (C) A rubber composition having excellent low moisture permeability, which is characterized by containing a peroxide.

本発明に使用される( A)非共役ポリエンは、5−エ
チリデン−2−ノルボルネンび/またはジシクロペンタ
ジェンであり、その含量は4〜8モル%の範囲で選ばれ
る。
The non-conjugated polyene (A) used in the present invention is 5-ethylidene-2-norbornene and/or dicyclopentadiene, and its content is selected within the range of 4 to 8 mol%.

ポリエン化合物が4モル%以下では架橋密度が(氏く、
十分な弓I弓M弓曳度力5マ尋られな(為し、透湿性の
改良効果も十分に得られない.また−8−a−〕し%以
上でa:!:コストが力)力)るのみで効果の士曽大a
1鎚めな0。
When the polyene compound content is 4 mol% or less, the crosslinking density decreases (
Sufficient bow I bow M bow pulling force 5 ma (therefore, the effect of improving moisture permeability is not sufficiently obtained.Also, -8-a-] and more than % a:!: cost is high) Shiso Dai a that is effective just by using force)
1 hammer 0.

本発明において、エチレン−プロピレン共重合体ゴムの
エチレン/プロピレン比(モル比)は50150〜95
15の範囲としているが、9寺ζこ面cJ寒性がぶ1;
薯な場合ζここよ50150〜80/20の範囲が好ま
しく、また、引づ長七主度等の機械8り3友度力1ぶ1
要な場合ζこζよ70/30〜9 5 / 5の範囲が
好ましい。
In the present invention, the ethylene/propylene ratio (molar ratio) of the ethylene-propylene copolymer rubber is 50,150 to 95.
It is set as a range of 15, but 9 temples ζ this side cJ cold weather 1;
In the case of yam, the range of ζ 50150 to 80/20 is preferable.
If necessary, ζ is preferably in the range of 70/30 to 95/5.

これらの物性を両立させるためには、70/3o〜80
/20の範囲がより好ましい一本発明の組成物は(B)
タルクの存在が不可欠であるが、その使用量は目的とす
る透湿性のレベルにより異なり、要求レベルカi高t″
%はど多量に使用されるが、エチレン−プロピレン−非
共役ポリエン共重合体100!量部当たり60〜300
重量部、より好ましくは1 0 0 〜2 0 0 3
tfiLiiFIK使用される。
In order to achieve both these physical properties, 70/3o~80
A composition of the present invention having a more preferable range of /20 is (B)
The presence of talc is essential, but the amount used depends on the desired level of moisture permeability, depending on the required level
% is used in large amounts, but ethylene-propylene-nonconjugated polyene copolymer 100! 60-300 per part
Parts by weight, more preferably 100 to 2003
tfiLiiFIK is used.

更に、他の カーボンブラック、クレー、炭酸カルシウ
ム等の補強性充填材とタルクとのイ井用も百日りξこ応
じて可I#旨であるが、その添カロ量aよタルク乞こ対
して少量とせねZf効果が少なt′S6 また、本発明組成物ζこζよぶ一要ξこ応じて〜ゴム業
界で公矢口の他の各種i悉カロ斉り、仔すえξfプロセ
スオイル 斉り〜 難燃前す、電を色斉り、架槽助斉り一 発?包
斉り、発泡助剤 等が選択、使用される。
Furthermore, it is possible to use talc with other reinforcing fillers such as carbon black, clay, and calcium carbonate, depending on the amount of calories added. In addition, depending on the composition of the present invention, the composition of the present invention can be used in a small amount. ~ In front of the flame retardant, the electric lights are all at once, and the tank aid is all at once? Foaming agents, foaming aids, etc. are selected and used.

本発明の組成物こよとりわ6ナカロ硫斉りとしての(C
)有機過酸化物(以下−バーオキサイドと3己す)を含
有することζ;より、更ζこイ氏透?昌・注の改良効果
カゴ1菅すことaよ特筆すべき事項である。
The composition of the present invention (C
) Contains organic peroxide (hereinafter referred to as "peroxide"); It is worth noting that the improvement effect of Masaru's comment is 1.

ここで使用されるノル−オキサイドζこコヨ、ノル−オ
キシケタール盟、ノへ・イドロノ〜−オキサイド−、ジ
アノしキルノ〜−オキサイド型、ジアシルノ〜−オキサ
イド盟、ノ(−オキシエステル盟なとt)ずれも言亥当
し〜fgすえ乞fジクミルノペーオキサイド、ジーt−
フ8チルパーオキサイド、t−ブチルレノ(−オキシク
メン、ペンゾイルノズーオキサイド、2,5−ジメチル
−2,,5−ジくt−)゛チルレノX−オキシ)ヘキサ
ン等力iあ6デられ、カロ硫条イ牛〜取扱い上の安全性
−臭気等を考慮して選択される。
Nor-oxide ζ kokoyo used here, nor-oxyketal group, nohe idrono--oxide-, dianoshikiru-no--oxide type, diacylno--oxide group, no(-oxyester group) ) All of the above are true ~ fg sue f dicumyl nopeoxide, g t-
8-methylperoxide, t-butylleno(-oxycumene, penzoylnozooxide, 2,5-dimethyl-2,,5-dicut-)゛tyleno-X-oxy)hexane, etc. Sulfur-stripe beef ~ Selected with consideration to safety in handling, odor, etc.

ノル−オキサイドの四己合量ζよ エチレン−プロピレ
ン−亭料共9受ポリエン共重合体xo05a量!15に
対し、0.5〜10重量音は、より好ましくは1〜5重
量85力5用いられ、百日ダとする力0硫ゴム製品の特
・注等からぶ・要に応じて量の士菅減が行われる。
The total amount of nor-oxide is ζ, and the amount of ethylene-propylene-copolyene copolymer xo05a! 15, 0.5 to 10 weight tone is used, more preferably 1 to 5 weight 85 force 5, and the amount of force to be used for 100 days is 0. Shisuge reduction will be carried out.

本発明で用いる上言己のごときゴム配合物乞ことよ〜通
常−ノル−オキサイド架橋日寺ζ;架橋効率を向上させ
るためのマ足来より公%0の架橋助斉り仔すえコヨ°〜
P、P’−ジベンゾイルキノンジオキシム、キノンジオ
キシム、トリアリルシアヌレート、エチレングリコール
ジメタクリレート−N、Nll−m−フェニレンビスマ
レイミド、トリアリルイソシアヌレート、トリメチロー
ルフーロノ可ントリメタクリレート等を添加すると効果
が増大する。
The rubber compound used in the present invention is a beggar for ordinary - nor-oxide cross-linking;
Addition of P, P'-dibenzoylquinone dioxime, quinone dioxime, triallyl cyanurate, ethylene glycol dimethacrylate-N, Nll-m-phenylene bismaleimide, triallyl isocyanurate, trimethylolfuronotrimethacrylate, etc. Then the effect will increase.

こうしてマ辱られたくA)共重合体ゴム乞こ対し、(B
)タルク、および、(C)有機過酸化物、更にλ〜要に
応じて架槽助斉り等の各種ξ悉力0斉りを配合する方?
去としては、通常の7πンノマリーミキサーまたはロー
ル等による?二練方?去a;よりtテうことカイできる
I want to be humiliated like this A) To beg for copolymer rubber, (B
) talc, and (C) organic peroxide, as well as λ to various kinds of ξ悉力0salts, such as Tatsutansukesairi, if necessary.
For removal, use a regular 7π normal mixer or roll, etc. Nirenkata? You can do more than that.

上言己のW己合a;よりマ尋られた未架橋ゴム配合物乞
よ予(fm成形ζこより新型の成形品ζこ成形されるカ
イ、成形方を去も9足来より公矢口のt甲出機−)゛レ
ス、ロール等の適当な方?去で檜テわれる。
The above-mentioned W-Kai-A; I was asked to beg for an uncrosslinked rubber compound. tKouteki-) ゛Is it suitable for res, roll, etc.? Hinoki is beaten in the house.

本発明によるゴム組成物を使用すれは”引3F%強度、
面寸熱性等の特性を維持しつつ〜イ氏透?昌性aこ優れ
たカロ硫物力111rられる。
When using the rubber composition according to the present invention, the 3F% strength
While maintaining properties such as surface heat resistance ~ Mr. Lee? It has excellent stability and excellent caloric sulfide power.

このカロ硫物ζよソケットカッマー、耐熱ホース電線−
コンデンサーキャップー面寸熱ベルト−ライニング、ウ
ェザ−ストリップ〜防振ゴム各種ノ〈ツキン、スポンジ
等のあらゆる用途ζこ使用される。
This calosulfuric acid ζ, socket kammer, heat resistant hose electric wire.
It is used for all kinds of purposes such as condenser caps, thermal belts, linings, weather strips, vibration-proof rubber, and sponges.

〈実施例〉 本発明を実施ffflJを用(1て説明するカイ、これ
!よ本発明をイ可ら限定するもので乙よなL’ にこで
カロ硫物性aよJXS−に6301ζ;より浸り定した
。面寸熱性は150℃×7211寺間マ氏の弓目長特性
を榎り定した。
〈Example〉 The present invention was carried out using ffflJ. The surface dimension thermal properties were determined based on Ma Terama's arch length characteristics of 150°C x 7211.

透?昌性の言平イ市aよJXS−20208ζこ準拠し
た40条イ牛aよ40°C1″目対?二度90%で損り
定した。
Tooru? The 40-row Ishi A in accordance with JXS-20208 ζ 40°C 1'' pair?2 times was determined to be 90% loss.

実施仔り1〜3および比較仔り1〜5 使用した共重合体ゴムの特・注イ筐を表1aこ、また配
合および加硫物性を表2に示した。
Experimental Examples 1 to 3 and Comparative Examples 1 to 5 Table 1a shows the special case of the copolymer rubber used, and Table 2 shows the formulation and vulcanization properties.

(配合量は共重合体ゴム100重量祁当たりの重′Mk
音βで示した。)なお−?毘練〜カロ硫ζよ次の通り実
施した。神戸製鋼新製BR型バンバリー(内容量1−6
リツトノし〉を用(為、ポリマー、充填前りおよびオイ
ルを同日寺こ;投入し〜12Pで6分間製練した。パー
オキサイド、硫黄等の力a硫斉りや力0硫助剤aよ50
”Cの10インチオーブンロール !よ蒸気]゛レス用(1て160°Cの9星度条イ牛で
行った。
(The compounding amount is the weight Mk per 100 weight of copolymer rubber.
Indicated by sound β. ) Nao-? The experiment was carried out as follows: Karosulfur ζ. Kobe Steel Newly Manufactured BR Type Banbury (Inner Capacity 1-6
Polymer, pre-filling and oil were added on the same day and smelted at 12P for 6 minutes. Peroxide, sulfur, etc.
``C's 10-inch oven roll! Steam] For less use (160°C 9-star-grilled beef).

圧縮永久歪ハJ X S−に630 :lにより、12
0°C×72時間の条イ牛でtテ9た。
Compression set: 630:l, 12
The temperature was 90% in row-coated beef at 0°C for 72 hours.

本実施fjlξこより、本発明ζこよる組成物力5弓1
り1%3怠度を糸核持したまま、優れたイ氏透?塁・注
と面寸熱性をマ昇ることのできる組成物であることカイ
わかる。
From this implementation fjlξ, composition power 5 bow 1 from this invention ζ
Are you an excellent Mr. Lee with 1% 3 laziness? It is clear that it is a composition that can improve the thermal properties of the base and surface.

実施停り4およびLヒ較汐り6〜lO 使用した共重合体ゴムの特・注イ直を表1に〜また配合
および加硫物性を表3に示した。
Table 1 shows the special characteristics of the copolymer rubber used, and Table 3 shows the formulation and vulcanization properties.

圧縮永久歪はJXS−に6301により〜120℃×7
2時間の条件で行った。
Compression set is JXS-6301 ~120℃ x 7
The test was carried out for 2 hours.

本実施停すζこより、本発明ζ;用1.)たタルクカイ
他の白色充填前りζこLヒベてイ氏透?出性を9昇るの
ζこ効果が絶大なことがわかる。
From this point on, the present invention will cease to be implemented.1. ) Is there any other white filling in front of you? It can be seen that the effect of raising the output character by 9 is enormous.

張強度〜耐熱性、耐寒性等の特性を実用上問題なt、s
レベルで維持したまま、イ氏透?W性ここ優れたゴム組
成物を提供することができる。
Tensile strength - properties such as heat resistance and cold resistance that are practically problematic.
Toru Lee while maintaining the level? A rubber composition with excellent W properties can be provided.

実施例6〜8および比較例11〜12 使用した共重合体ゴムの特性値を表1に、また配合およ
び加硫物性を表4に示した。
Examples 6 to 8 and Comparative Examples 11 to 12 Table 1 shows the characteristic values of the copolymer rubbers used, and Table 4 shows the blending and vulcanization properties.

圧縮永久歪はJIS−に6301により〜15o℃×7
2100条件と像温特性の指標として、O−C:X:2
2時間の条件で行った。
Compression set is ~15oC x 7 according to JIS-6301
As an index of 2100 conditions and image temperature characteristics, O-C:X:2
The test was carried out for 2 hours.

本実施例により、本発明に用いた共重合体コ′ムζこよ
れ乙よ° 弓1町羨臘rJcをイ氏下させることなく一
低透湿性を有するゴム組成物を得られることがわかる。
This example shows that it is possible to obtain a rubber composition with low moisture permeability without lowering the copolymer comb used in the present invention. .

〈発明の効果〉<Effect of the invention>

Claims (1)

【特許請求の範囲】 (A)エチレン、プロピレンおよび非共役ポリエンとか
らなり、 (a)非共役ポリエンが5−エチリデン−2−ノルボル
ネンおよび/またはジシクロペンタジエンであり、その
含量が4〜8モル%で、 (b)エチレン/プロピレン比(モル比)が、50/5
0ないし95/5であるエチレン共重合体ゴム100重
量部に対し、 (B)タルクを50〜300重量部、 (C)有機過酸化物 を配合してなることを特徴とする低透湿性に優れたゴム
組成物。
[Scope of Claims] (A) Consisting of ethylene, propylene and a non-conjugated polyene, (a) The non-conjugated polyene is 5-ethylidene-2-norbornene and/or dicyclopentadiene, and the content thereof is 4 to 8 mol. %, (b) ethylene/propylene ratio (molar ratio) is 50/5
0 to 95/5 ethylene copolymer rubber, (B) 50 to 300 parts by weight of talc, and (C) an organic peroxide. Excellent rubber composition.
JP24867588A 1988-09-29 1988-09-29 Low-moisture permeable rubber composition Pending JPH0292945A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24867588A JPH0292945A (en) 1988-09-29 1988-09-29 Low-moisture permeable rubber composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24867588A JPH0292945A (en) 1988-09-29 1988-09-29 Low-moisture permeable rubber composition

Publications (1)

Publication Number Publication Date
JPH0292945A true JPH0292945A (en) 1990-04-03

Family

ID=17181662

Family Applications (1)

Application Number Title Priority Date Filing Date
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996032442A1 (en) * 1995-04-11 1996-10-17 Mitsui Petrochemical Industries, Ltd. Heat-resistant rubber compositions
JP2015017161A (en) * 2013-07-09 2015-01-29 日立金属株式会社 Elastomer composition, and insulation wire and insulation cable using the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996032442A1 (en) * 1995-04-11 1996-10-17 Mitsui Petrochemical Industries, Ltd. Heat-resistant rubber compositions
USRE37527E1 (en) 1995-04-11 2002-01-22 Mitsu Chemicals Heat-resistant rubber composition
US6346577B1 (en) 1995-04-11 2002-02-12 Mitsui Chemicals Inc Heat-resistant rubber composition
JP2015017161A (en) * 2013-07-09 2015-01-29 日立金属株式会社 Elastomer composition, and insulation wire and insulation cable using the same

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