JPH10130441A - Rubber composition for vulcanizing bladder - Google Patents
Rubber composition for vulcanizing bladderInfo
- Publication number
- JPH10130441A JPH10130441A JP28421596A JP28421596A JPH10130441A JP H10130441 A JPH10130441 A JP H10130441A JP 28421596 A JP28421596 A JP 28421596A JP 28421596 A JP28421596 A JP 28421596A JP H10130441 A JPH10130441 A JP H10130441A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- vulcanizing
- weight
- parts
- vulcanizing bladder
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明はタイヤなどの加硫
成形装置に取り付けられる加硫用ブラダー（加硫用膨張
袋状体）の耐久性の改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in the durability of a vulcanizing bladder (expandable vulcanizing bag) attached to a vulcanizing apparatus such as a tire.
【０００２】[0002]
【従来の技術】従来よりタイヤの加硫工程に使用される
ゴム風船状の加硫用ブラダーは、高温で繰り返し伸びを
与えるために優れた耐熱性を発揮する樹脂加硫ブチルゴ
ムが使用されている。この樹脂加硫とはブチルゴムに加
硫剤としてジメチロール化フェノール樹脂（レゾール
型）などを用い、さらに加硫触媒としてクロロプレンゴ
ム、クロオスルフォン化ポリエチレン、ハロゲン化ブチ
ルゴムなどのハロゲン含有ゴムや塩化第一鉄、塩化第一
錫のような金属塩化物を用いて高温で加硫する方法であ
る。この加硫用ブラダーに要求される特性は永久伸びを
少なくすることであるが、従来の加硫用ブラダーでは必
ずしも満足すべきものでない。2. Description of the Related Art Conventionally, a rubber balloon-shaped vulcanizing bladder used in a tire vulcanizing process uses a resin-vulcanized butyl rubber exhibiting excellent heat resistance in order to repeatedly give elongation at a high temperature. . This resin vulcanization involves the use of a dimethylolated phenol resin (resole type) or the like as a vulcanizing agent for butyl rubber and a halogen-containing rubber such as chloroprene rubber, chlorosulfonated polyethylene, or halogenated butyl rubber or ferrous chloride as a vulcanization catalyst. And vulcanization at a high temperature using a metal chloride such as stannous chloride. The property required for this vulcanizing bladder is to reduce permanent elongation, but it is not always satisfactory with conventional vulcanizing bladders.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は、永久
伸びを小さくすることにより耐久性が改善された加硫用
ブラダー用ゴム組成物および加硫用ブラダーを提供する
ことである。SUMMARY OF THE INVENTION An object of the present invention is to provide a vulcanizing bladder rubber composition and a vulcanizing bladder which have improved durability by reducing permanent elongation.
【０００４】[0004]
【課題を解決するための手段】本発明者は、前記課題を
解決すべく種々の検討を重ねた結果、樹脂加硫に用いる
メチロール化フェノール樹脂のメチロール成分を従来の
８〜９％から１０〜１２％にすることにより永久伸びが
著しく減少することを見出だしこの知見にもとづいて、
本発明を完成するに至った。As a result of various studies to solve the above-mentioned problems, the present inventor has found that the methylol component of the methylolated phenol resin used for vulcanization of the resin is reduced from 8 to 9% of the conventional value to 10 to 10%. It was found that the permanent elongation was significantly reduced by setting it to 12%, and based on this finding,
The present invention has been completed.
【０００５】本発明の加硫用ブラダー用ゴム組成物は、
メチロール成分の１０〜１２重量％含有するメチロール
化フェノール樹脂、およびブチルゴムを含むゴム成分を
含有することを特徴とする。好ましくは、メチロール成
分の１０〜１２％含有するメチロール化フェノール樹脂
がゴム成分１００重量部に対して５〜１５重量部であ
る。また、ゴム成分１００重量部がブチルゴム８０〜１
００重量部およびクロロプレンゴム０〜２０重量部から
なるのが好ましい。The rubber composition for a vulcanizing bladder of the present invention comprises:
It is characterized by containing a methylolated phenol resin containing 10 to 12% by weight of the methylol component and a rubber component containing butyl rubber. Preferably, the methylolated phenol resin containing 10 to 12% of the methylol component is 5 to 15 parts by weight based on 100 parts by weight of the rubber component. Also, 100 parts by weight of the rubber component is 80 to 1 butyl rubber.
It is preferably composed of 00 parts by weight and 0 to 20 parts by weight of chloroprene rubber.
【０００６】本発明の加硫用ブラダーは、ブチルゴムに
加硫剤としてジメチロール化フェノール樹脂（レゾール
型）を用い、さらに加硫触媒としてハロゲン含有ゴムや
塩化第一鉄、塩化第一錫のような金属塩化物を用いて高
温で加硫するいわゆる樹脂加硫により得られるが、その
ジメチロール化フェノール樹脂のメチロール成分が１０
〜１２重量％含有することが本発明の特徴である。The vulcanizing bladder of the present invention uses a dimethylolated phenol resin (resole type) as a vulcanizing agent for butyl rubber, and further uses a vulcanizing catalyst such as a halogen-containing rubber, ferrous chloride or stannous chloride. It is obtained by so-called resin vulcanization in which vulcanization is performed at a high temperature using a metal chloride, and the methylol component of the dimethylolated phenol resin is 10%.
It is a feature of the present invention that the content thereof is about 12% by weight.
【０００７】[0007]
【発明の実施の形態】本発明の加硫用ブラダー用ゴム組
成物に係わるゴム成分としては、ブチルゴム以外に加硫
触媒として使用するクロロプレンゴム、クロルスルフォ
ン化ポリエチレン、ハロゲン化ブチルゴムなどがあげら
れる。その他ハロゲン化エチレンプロピレン三元共重合
体ゴムなどがあげられる。ブチルゴムとしては、イソブ
チレンーイソプレン共重合体が示される。具体的には、
日本ブチル社製“ＪＳＲ Ｂｕｔｙｌ ２６８”、Ｐｏ
ｌｙｓａｒ社製“Ｂｕｔｙｌ ３０１”などがあげられ
る。BEST MODE FOR CARRYING OUT THE INVENTION Examples of the rubber component relating to the rubber composition for vulcanizing bladders of the present invention include chloroprene rubber, chlorosulfonated polyethylene, halogenated butyl rubber and the like used as a vulcanization catalyst in addition to butyl rubber. Other examples include a halogenated ethylene propylene terpolymer rubber. As butyl rubber, an isobutylene-isoprene copolymer is shown. In particular,
Nippon Butyl “JSR Butyl 268”, Po
"Butyl 301" manufactured by Lysar Co., Ltd. and the like.
【０００８】本発明の加硫用ブラダー用ゴム組成物に係
わるメチロール化フェノール樹脂（レゾール樹脂）は、
樹脂中のメチロール成分が１０〜１２重量％含有するの
が特徴であり、加硫剤として使用される。本発明の加硫
用ブラダー用ゴム組成物に係わるメチロール化フェノー
ル樹脂（レゾール樹脂）の配合量は、ゴム成分１００重
量部に対して５〜１５重量部、好ましくは７〜１０重量
部である。５重量部未満であるとブラダー成形のための
加硫時間の延長が必要であり、また、１５重量部を越え
ると永久伸びが大きくなるので好ましくない。これらの
樹脂の使用した加硫用ブラダーは、従来のメチロール成
分が８〜９重量％のメチロール化フェノール樹脂（レゾ
ール樹脂）の使用した加硫用ブラダーと比べて永久伸び
が減少し、加硫用ブラダーの寿命が１．５倍以上向上す
る。[0008] The methylolated phenolic resin (resole resin) according to the rubber composition for vulcanizing bladders of the present invention comprises:
It is characterized in that it contains 10 to 12% by weight of a methylol component in the resin, and is used as a vulcanizing agent. The amount of the methylolated phenolic resin (resole resin) in the rubber composition for vulcanizing bladders of the present invention is 5 to 15 parts by weight, preferably 7 to 10 parts by weight, per 100 parts by weight of the rubber component. If the amount is less than 5 parts by weight, the vulcanization time for bladder molding needs to be extended, and if it exceeds 15 parts by weight, the permanent elongation is undesirably large. The vulcanization bladder using these resins has a lower permanent elongation than a conventional vulcanization bladder using a methylolated phenol resin (resole resin) containing 8 to 9% by weight of a methylol component. The life of the bladder is improved by 1.5 times or more.
【０００９】本発明のブラダーには、ＨＡＦ，ＦＥＦ，
ＧＰＰなどのファーネス系カーボンブラックやアセチレ
ンブラック、チャンネル系カーボンブラックなどの補充
性充填剤をブチルゴム成分１００重量部に対して２０〜
８０重量部の範囲で適宜配合し、亜鉛華も０．５〜８重
量部の範囲で配合してもよい。カーボンブラックは２０
重量部より少ないと引張り強さが低くなり、８０重量部
を越えると加工性が悪くなるばかりでなく耐屈曲性が悪
化して寿命が低下する。The bladder of the present invention includes HAF, FEF,
A supplementary filler such as furnace-based carbon black such as GPP, acetylene black, or channel-based carbon black is added in an amount of 20 to 100 parts by weight based on the butyl rubber component.
It may be appropriately blended in the range of 80 parts by weight, and zinc white may be blended in the range of 0.5 to 8 parts by weight. Carbon black is 20
If the amount is less than 10 parts by weight, the tensile strength will be low. If the amount exceeds 80 parts by weight, not only the workability will deteriorate, but also the bending resistance will deteriorate and the life will be shortened.
【００１０】[0010]
【実施例】以下に実施例、比較例により、本発明を更に
具体的に説明するが、本発明はこの実施例によって何等
限定されるものではない。The present invention will be described more specifically with reference to the following examples and comparative examples, but the present invention is not limited to these examples.
【００１１】〔実施例１〜４，比較例１〜４〕表１と表
２の配合表にしたがってタイヤ用加硫用ブラダーを試作
し、永久伸びを測定した。各々１０個の測定の平均値を
表１〜２に示す。永久伸びの測定はＪＩＳ Ｋ６３０１
に基づいて行った。タイヤ用加硫用ブラダーの初期の全
周の長さをＬ（０）とし、５００回使用後の全周の長さ
をＬ（５００）とし、次の式により永久伸びを求めた。 永久伸び（％）＝｛Ｌ（５００）ー Ｌ（０）｝／Ｌ
（０）Examples 1 to 4 and Comparative Examples 1 to 4 Tire vulcanizing bladders were trial-produced in accordance with the mixing tables in Tables 1 and 2, and the permanent elongation was measured. Tables 1 and 2 show the average values of 10 measurements each. Measurement of permanent elongation is based on JIS K6301
It went based on. The initial length of the entire circumference of the vulcanizing bladder for tires was L (0), and the length of the entire circumference after 500 uses was L (500), and the permanent elongation was determined by the following equation. Permanent elongation (%) = {L (500) -L (0)} / L
(0)
【００１２】[0012]
【表１】 [Table 1]
【００１３】[0013]
【表２】 [Table 2]
【００１４】[0014]
【発明の効果】本発明の加硫用ブラダー用ゴム組成物に
より、永久伸びが小さいので高温下で繰り返し伸びを与
える使用に耐えることができる加硫用ブラダーが得られ
る。この加硫用ブラダーは従来のものに比べて、耐久
性、寿命が向上した。According to the rubber composition for a vulcanizing bladder of the present invention, a vulcanizing bladder which has a small permanent elongation and can withstand repeated use under high temperatures can be obtained. This vulcanizing bladder has improved durability and life as compared with the conventional one.
Claims (4)
するメチロール化フェノール樹脂、およびブチルゴムを
含むゴム成分を含有することからなる加硫用ブラダー用
ゴム組成物。1. A rubber composition for a vulcanizing bladder comprising a methylolated phenol resin containing 10 to 12% by weight of a methylol component and a rubber component containing butyl rubber.
メチロール化フェノール樹脂をゴム成分１００重量部に
対して５〜１５重量部含有することからなる請求項１記
載の加硫用ブラダー用ゴム組成物。2. The rubber composition for a vulcanizing bladder according to claim 1, comprising 5 to 15 parts by weight of a methylolated phenol resin containing 10 to 12% of the methylol component based on 100 parts by weight of the rubber component. .
〜１００重量部およびクロロプレンゴム０〜２０重量部
である請求項２記載の加硫用ブラダー用ゴム組成物。3. A rubber component comprising 100 parts by weight of butyl rubber 80
The rubber composition for a vulcanizing bladder according to claim 2, wherein the rubber composition comprises from 100 to 100 parts by weight and from 0 to 20 parts by weight of a chloroprene rubber.
用ブラダー用ゴム組成物を樹脂加硫することからなる加
硫用ブラダー。4. A vulcanizing bladder obtained by resin vulcanizing the rubber composition for vulcanizing bladder according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28421596A JP3741800B2 (en) | 1996-10-25 | 1996-10-25 | Rubber composition for bladder for vulcanization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28421596A JP3741800B2 (en) | 1996-10-25 | 1996-10-25 | Rubber composition for bladder for vulcanization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10130441A true JPH10130441A (en) | 1998-05-19 |
| JP3741800B2 JP3741800B2 (en) | 2006-02-01 |
Family
ID=17675665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28421596A Expired - Lifetime JP3741800B2 (en) | 1996-10-25 | 1996-10-25 | Rubber composition for bladder for vulcanization |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3741800B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020082344A (en) * | 2001-04-23 | 2002-10-31 | 금호산업 주식회사 | Bladder rubber composition improved fstigue to failure property |
| KR100474576B1 (en) * | 1998-12-31 | 2005-06-08 | 한국타이어 주식회사 | Rubber composition for vulcanizing bladder |
| KR100553187B1 (en) * | 2004-06-15 | 2006-02-22 | 금호타이어 주식회사 | Cure bladder compound having improved thermal, crack and steam aging resistance |
| JP2011038101A (en) * | 2009-08-07 | 2011-02-24 | Rhein Chemie Rheinau Gmbh | Vulcanization accelerating mixture |
| WO2014112564A1 (en) | 2013-01-17 | 2014-07-24 | 電気化学工業株式会社 | Bladder for tire vulcanization |
| WO2016088817A1 (en) * | 2014-12-04 | 2016-06-09 | 横浜ゴム株式会社 | Rubber composition for tire-vulcanizing bladder, and tire-vulcanizing bladder produced using same |
| RU2692237C1 (en) * | 2019-03-06 | 2019-06-24 | Публичное акционерное общество "Нижнекамскшина" | Rubber mixture |
-
1996
- 1996-10-25 JP JP28421596A patent/JP3741800B2/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100474576B1 (en) * | 1998-12-31 | 2005-06-08 | 한국타이어 주식회사 | Rubber composition for vulcanizing bladder |
| KR20020082344A (en) * | 2001-04-23 | 2002-10-31 | 금호산업 주식회사 | Bladder rubber composition improved fstigue to failure property |
| KR100553187B1 (en) * | 2004-06-15 | 2006-02-22 | 금호타이어 주식회사 | Cure bladder compound having improved thermal, crack and steam aging resistance |
| JP2011038101A (en) * | 2009-08-07 | 2011-02-24 | Rhein Chemie Rheinau Gmbh | Vulcanization accelerating mixture |
| WO2014112564A1 (en) | 2013-01-17 | 2014-07-24 | 電気化学工業株式会社 | Bladder for tire vulcanization |
| WO2016088817A1 (en) * | 2014-12-04 | 2016-06-09 | 横浜ゴム株式会社 | Rubber composition for tire-vulcanizing bladder, and tire-vulcanizing bladder produced using same |
| JPWO2016088817A1 (en) * | 2014-12-04 | 2017-09-14 | 横浜ゴム株式会社 | Rubber composition for tire vulcanization bladder and tire vulcanization bladder using the same |
| RU2692237C1 (en) * | 2019-03-06 | 2019-06-24 | Публичное акционерное общество "Нижнекамскшина" | Rubber mixture |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3741800B2 (en) | 2006-02-01 |
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