JPH11153169A - High damping rubber composition - Google Patents

High damping rubber composition

Info

Publication number
JPH11153169A
JPH11153169A JP32110497A JP32110497A JPH11153169A JP H11153169 A JPH11153169 A JP H11153169A JP 32110497 A JP32110497 A JP 32110497A JP 32110497 A JP32110497 A JP 32110497A JP H11153169 A JPH11153169 A JP H11153169A
Authority
JP
Japan
Prior art keywords
rubber
vulcanized
weight
parts
chloroprene rubber
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
JP32110497A
Other languages
Japanese (ja)
Inventor
Yoshiharu Kiyohara
好晴 清原
Hirobumi Tsujimoto
博文 辻本
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.)
Nitta Corp
Original Assignee
Nitta Corp
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 Nitta Corp filed Critical Nitta Corp
Priority to JP32110497A priority Critical patent/JPH11153169A/en
Publication of JPH11153169A publication Critical patent/JPH11153169A/en
Pending legal-status Critical Current

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  • Springs (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve damping characteristic by being providing with natural rubber, chloroprene rubber, sulfur, zinc oxide, and vulcanized accelerating agent which natural rubber is vulcanized and chloroprene rubber is not vulcanized. SOLUTION: A high damping rubber composition is provided with a natural rubber, chloroprene rubber, sulfur, zink oxide, and vulcanized accelerator which natural rubber is vulcanized and chloroprene rubber is not vulcanized. The zinc oxide is acted as secondary vulcanized agent on the natural rubber and the chloroprene rubber, and a part of the chloroprene rubber is vulcanized. In the chloroprene rubber made of synthetic rubber, a damping characteristic is reduced when vulcanization is progressed. In the high damping rubber production material, the vulcanized accelerator is formed in such a constitution that natural rubber is vulcanized and chloroprene rubber is not vulcanized, and the damping characteristic can be exhibited by the chloroprene rubber.

Description

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

【0001】[0001]

【発明の属する技術分野】この発明は、地震などの振動
エネルギーを吸収する装置等に用いられる高減衰ゴム組
成物に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high damping rubber composition used for a device for absorbing vibration energy such as an earthquake.

【0002】[0002]

【従来の技術】従来より天然ゴムを高減衰ゴムとして利
用するために、カーボンブラックを加える手段がある
が、高減衰ゴムとしては減衰特性に限界がある。
2. Description of the Related Art Conventionally, there is a means for adding carbon black in order to use natural rubber as a high-damping rubber. However, the damping characteristics of the high-damping rubber are limited.

【0003】そのため、天然ゴムの減衰特性をより向上
させるために合成ゴムをブレンドすることが考えられ
る。
[0003] Therefore, it is conceivable to blend a synthetic rubber in order to further improve the damping characteristics of the natural rubber.

【0004】[0004]

【発明が解決しようとする課題】そこで、この発明は、
天然ゴムにクロロプレンゴムをブレンドすることにより
減衰特性が改善された高減衰ゴム組成物を提供しようと
するものである。
SUMMARY OF THE INVENTION Therefore, the present invention
An object of the present invention is to provide a high damping rubber composition having improved damping characteristics by blending chloroprene rubber with natural rubber.

【0005】[0005]

【課題を解決するための手段】前記課題を解決するため
この発明では次のような技術的手段を講じている。
In order to solve the above-mentioned problems, the present invention employs the following technical means.

【0006】この発明の高減衰ゴム組成物は、天然ゴム
とクロロプレンゴムと硫黄と亜鉛華と、天然ゴムは加硫
するがクロロプレンゴムは加硫しない加硫促進剤とを具
備することを特徴とする。
The high damping rubber composition of the present invention is characterized by comprising natural rubber, chloroprene rubber, sulfur and zinc white, and a vulcanization accelerator which vulcanizes natural rubber but does not vulcanize chloroprene rubber. I do.

【0007】ところで、合成ゴムたるクロロプレンゴム
は、加硫が進むと減衰特性が減少する。この高減衰ゴム
組成物では、加硫促進剤によって天然ゴムは加硫される
がクロロプレンゴムは加硫されないようにしており、ク
ロロプレンゴムによる減衰特性を発揮することができ
る。なお亜鉛華は天然ゴムとクロロプレンゴムに対し二
次加硫剤として作用し、クロロプレンゴムに対しては加
硫剤としても作用して、クロロプレンゴムの一部を加硫
させる。
By the way, the chloroprene rubber, which is a synthetic rubber, has a reduced attenuation characteristic as vulcanization proceeds. In this high attenuation rubber composition, the natural rubber is vulcanized by the vulcanization accelerator, but the chloroprene rubber is not vulcanized, so that the attenuation characteristics of the chloroprene rubber can be exhibited. Zinc white acts as a secondary vulcanizing agent for natural rubber and chloroprene rubber, and also acts as a vulcanizing agent for chloroprene rubber to vulcanize a part of the chloroprene rubber.

【0008】前記加硫促進剤としてスルフェンアミド
系、又は/及びチアゾール系、又は/及びチウラム系の
ものを含有せしめてもよい。また、このゴム組成物に
は、カーボンブラックやオイルなどの適宜の添加物を配
合してもよい。
The vulcanization accelerator may contain a sulfenamide type, / or a thiazole type, and / or a thiuram type. Further, an appropriate additive such as carbon black or oil may be added to the rubber composition.

【0009】[0009]

【発明の実施の形態】以下、この発明の実施の形態を説
明する。
Embodiments of the present invention will be described below.

【0010】この実施形態の高減衰ゴム組成物は、天然
ゴムとクロロプレンゴムと硫黄と亜鉛華と、天然ゴムは
加硫するがクロロプレンゴムは加硫しない加硫促進剤と
を具備する。亜鉛華は天然ゴムとクロロプレンゴムに対
し二次加硫剤として作用し、クロロプレンゴムに対して
は加硫剤としても作用して、クロロプレンゴムの一部を
加硫させる。クロロプレンゴムの加硫をできるだけ抑え
るために、反応性が高い二次加硫剤である酸化マグネシ
ウムは配合していない。このゴム組成物には、カーボン
ブラックやオイルなどのその他適宜の添加物を配合して
もよい。
[0010] The high attenuation rubber composition of this embodiment comprises natural rubber, chloroprene rubber, sulfur and zinc white, and a vulcanization accelerator which vulcanizes natural rubber but does not vulcanize chloroprene rubber. Zinc white acts as a secondary vulcanizing agent for natural rubber and chloroprene rubber, and also acts as a vulcanizing agent for chloroprene rubber to vulcanize a part of the chloroprene rubber. In order to minimize the vulcanization of chloroprene rubber, magnesium oxide, which is a highly reactive secondary vulcanizing agent, is not included. The rubber composition may contain other appropriate additives such as carbon black and oil.

【0011】合成ゴムたるクロロプレンゴムは、加硫が
進むと減衰特性が減少する。この高減衰ゴム組成物で
は、加硫促進剤とによって天然ゴムは加硫されるがクロ
ロプレンゴムは加硫されないようにしており、クロロプ
レンゴムによる減衰特性を発揮することができる。
[0011] Chloroprene rubber, which is a synthetic rubber, has a reduced attenuation characteristic as vulcanization proceeds. In this high attenuation rubber composition, the natural rubber is vulcanized by the vulcanization accelerator, but the chloroprene rubber is not vulcanized, so that the attenuation characteristics of the chloroprene rubber can be exhibited.

【0012】加硫促進剤として、スルフェンアミド系、
チアゾール系、チウラム系のものを含有せしめた。クロ
ロプレンゴムをあまり加硫させずに天然ゴムは加硫させ
るスルフェンアミド系、チアゾール系、チウラム系のも
のを配合することにより天然ゴムの方は加硫が進むよう
にしており且つ亜鉛華によりクロロプレンゴムの一部は
加硫させるようにしているので、ゴム組成物全体として
の加硫は十分なものとなり圧縮永久歪みを確保してい
る。
As vulcanization accelerators, sulfenamides,
Thiazole and thiuram compounds were included. Sulfenamide, thiazole, and thiuram compounds that are vulcanized without compounding the chloroprene rubber are vulcanized. Since a part is vulcanized, the vulcanization of the whole rubber composition is sufficient and the compression set is secured.

【0013】またクロロプレンゴム単独では一般的に低
温特性と加硫安定性とがあまり良くないが、天然ゴムに
配合することによってこれらを改善しつつ減衰特性を付
与することができる。クロロプレンゴムは、天然ゴムと
の相性がよい。
Although chloroprene rubber alone generally does not have good low-temperature properties and vulcanization stability, it can improve damping properties while improving these properties by blending with natural rubber. Chloroprene rubber has good compatibility with natural rubber.

【0014】すなわちこの実施形態の高減衰ゴム組成物
は、天然ゴムに合成ゴムとしてクロロプレンゴムをブレ
ンドすることにより、減衰特性が改善されたという利点
がある。
That is, the high damping rubber composition of this embodiment has an advantage that the damping characteristics are improved by blending chloroprene rubber as a synthetic rubber with natural rubber.

【0015】[0015]

【実施例】次に、この発明の構成をより具体的に説明す
る。
Next, the configuration of the present invention will be described more specifically.

【0016】以下の配合により、高減衰ゴム組成物を調
整した。 (実施例1)天然ゴム…70重量部。クロロプレンゴム
…30重量部。亜鉛華…5重量部。スルフェンアミド系
の加硫促進剤…2.5重量部。硫黄…1重量部。カーボ
ンブラック…40重量部。オイル…10重量部。 (実施例2)天然ゴム…70重量部、クロロプレンゴム
…30重量部、亜鉛華…5重量部、スルフェンアミド系
の加硫促進剤…2.5重量部、硫黄…1重量部、カーボ
ンブラック…65重量部、オイル…20重量部。 (実施例3)天然ゴム…30重量部、クロロプレンゴム
…70重量部、亜鉛華…5重量部、スルフェンアミド系
の加硫促進剤…2.5重量部、硫黄…1重量部、カーボ
ンブラック…65重量部、オイル…20重量部。
A high damping rubber composition was prepared by the following formulation. (Example 1) Natural rubber: 70 parts by weight. Chloroprene rubber: 30 parts by weight. Zinc flower ... 5 parts by weight. Sulfenamide vulcanization accelerator: 2.5 parts by weight. Sulfur: 1 part by weight. Carbon black: 40 parts by weight. Oil: 10 parts by weight. (Example 2) 70 parts by weight of natural rubber, 30 parts by weight of chloroprene rubber, 5 parts by weight of zinc white, 2.5 parts by weight of a sulfenamide-based vulcanization accelerator, 1 part by weight of sulfur, carbon black ... 65 parts by weight, oil ... 20 parts by weight. (Example 3) 30 parts by weight of natural rubber, 70 parts by weight of chloroprene rubber, 5 parts by weight of zinc white, 2.5 parts by weight of a sulfenamide-based vulcanization accelerator, 1 part by weight of sulfur, carbon black ... 65 parts by weight, oil ... 20 parts by weight.

【0017】以下の配合により、高減衰ゴム組成物の比
較例を調整した。 (比較例1)天然ゴム…100重量部、亜鉛華…5重量
部、スルフェンアミド系の加硫促進剤…2.5重量部、
硫黄…1重量部、カーボンブラック…40重量部、オイ
ル…10重量部。 (比較例2)天然ゴム…70重量部、スチレンブタジエ
ンゴム…30重量部、亜鉛華…5重量部、スルフェンア
ミド系の加硫促進剤…2.5重量部、硫黄…1重量部、
カーボン・ブラック…40重量部、オイル…10重量
部。 (比較例3)天然ゴム…70重量部。塩素化ブチルゴム
…30重量部。亜鉛華…5重量部。スルフェンアミド系
の加硫促進剤…2.5重量部。硫黄…1重量部。カーボ
ン・ブラック…40重量部。オイル…10重量部。 (比較例4)天然ゴム…100重量部、亜鉛華…5重量
部、スルフェンアミド系の加硫促進剤…2.5重量部、
硫黄…1重量部、カーボンブラック…65重量部、オイ
ル…20重量部。
Comparative examples of high damping rubber compositions were prepared according to the following formulation. (Comparative Example 1) 100 parts by weight of natural rubber, 5 parts by weight of zinc white, 2.5 parts by weight of a sulfenamide-based vulcanization accelerator,
Sulfur: 1 part by weight, carbon black: 40 parts by weight, oil: 10 parts by weight. (Comparative Example 2) 70 parts by weight of natural rubber, 30 parts by weight of styrene butadiene rubber, 5 parts by weight of zinc white, 2.5 parts by weight of a sulfenamide-based vulcanization accelerator, 1 part by weight of sulfur,
40 parts by weight of carbon black, 10 parts by weight of oil. (Comparative Example 3) Natural rubber: 70 parts by weight. Chlorinated butyl rubber: 30 parts by weight. Zinc flower ... 5 parts by weight. Sulfenamide vulcanization accelerator: 2.5 parts by weight. Sulfur: 1 part by weight. Carbon black ... 40 parts by weight. Oil: 10 parts by weight. (Comparative Example 4) Natural rubber: 100 parts by weight, zinc white: 5 parts by weight, sulfenamide-based vulcanization accelerator: 2.5 parts by weight,
1 part by weight of sulfur, 65 parts by weight of carbon black, 20 parts by weight of oil.

【0018】上記クロロプレンゴムとして電気化学工業
社製の商品名DCR34を、スチレンブタジエンゴムと
して旭化成工業社製の商品名タフデン4350を、塩素
化ブチルゴムとして日本合成ゴム社製の商品名1066
をそれぞれ用いた。またスルフェンアミド系の加硫促進
剤として、N−シクロヘキシル−2−ベンゾチアジル・
スルフェンアミドを用いた。
The chloroprene rubber is DCR34 (trade name, manufactured by Denki Kagaku Kogyo Co., Ltd.), the styrene butadiene rubber is Tuffden 4350 (trade name, manufactured by Asahi Kasei Corporation), and the chlorinated butyl rubber is 1066 (trade name, manufactured by Nippon Synthetic Rubber Co., Ltd.).
Were used. As a sulfenamide vulcanization accelerator, N-cyclohexyl-2-benzothiazyl.
Sulfenamide was used.

【0019】上記の各実施例及び各比較例の割合で配合
し公知の方法により加硫させ、高減衰ゴム組成物を得
た。そして各サンプルにより、ヒステリシスロス(%)
を測定した。ヒステリシスロスは、100%の変形で3
回の試験結果の平均値により算出した。
Each of the above Examples and Comparative Examples was blended in a proportion and vulcanized by a known method to obtain a high-damping rubber composition. And, depending on each sample, hysteresis loss (%)
Was measured. Hysteresis loss is 3 at 100% deformation
It was calculated from the average of the test results.

【0020】なお前記各サンプルにより、圧縮永久歪み
(%)と引張強度TB(kgf/cm2 )と破断伸びEB
(%)も測定した。圧縮永久歪みは、70℃での22時
間の加熱後に測定した。すると、以下の通りの測定結果
であった。
The above samples were used to determine the compression set (%), tensile strength TB (kgf / cm 2 ), and elongation at break EB.
(%) Was also measured. Compression set was measured after heating at 70 ° C. for 22 hours. Then, the following measurement results were obtained.

【0021】実施例1のヒステリシスロス…36%。圧
縮永久歪みは21%、引張強度TBは241kgf/cm2
破断伸びEBは680%であった。
Hysteresis loss of Example 1 36%. The compression set is 21%, the tensile strength TB is 241 kgf / cm 2 ,
The elongation at break EB was 680%.

【0022】実施例2のヒステリシスロス…40%。圧
縮永久歪みは20%、引張強度TBは205kgf/cm2
破断伸びEBは620%であった。
Hysteresis loss of the second embodiment: 40%. The compression set is 20%, the tensile strength TB is 205 kgf / cm 2 ,
The elongation at break EB was 620%.

【0023】実施例3のヒステリシスロス…46%。圧
縮永久歪みは22%、引張強度TBは187kgf/cm2
破断伸びEBは560%であった。
Hysteresis loss of Example 3: 46%. Compression set is 22%, tensile strength TB is 187kgf / cm 2 ,
The elongation at break EB was 560%.

【0024】一方、比較例1のヒステリシスロス…30
%。圧縮永久歪みは20%、引張強度TBは288kgf/
cm2 、破断伸びEBは700%であった。
On the other hand, the hysteresis loss of Comparative Example 1 ... 30
%. Compression set is 20%, tensile strength TB is 288kgf /
cm 2 and elongation at break EB were 700%.

【0025】比較例2のヒステリシスロス…29%。圧
縮永久歪みは20%、引張強度TBは242kgf/cm2
破断伸びEBは700%であった。
Hysteresis loss of Comparative Example 2 29%. The compression set is 20%, the tensile strength TB is 242 kgf / cm 2 ,
The elongation at break EB was 700%.

【0026】比較例3のヒステリシスロス…34%。圧
縮永久歪みは25%、引張強度TBは162kgf/cm2
破断伸びEBは610%であった。
Hysteresis loss of Comparative Example 3 34%. The compression set is 25%, the tensile strength TB is 162 kgf / cm 2 ,
The elongation at break EB was 610%.

【0027】比較例4のヒステリシスロス…33%。圧
縮永久歪みは20%、引張強度TBは226kgf/cm2
破断伸びEBは670%であった。
Hysteresis loss of Comparative Example 4 33%. The compression set is 20%, the tensile strength TB is 226 kgf / cm 2 ,
The elongation at break EB was 670%.

【0028】以上の測定結果を比較すると、実施例のサ
ンプルは比較例のサンプルよりヒステリシスロスが高い
ことがわかる。この実施例の高減衰ゴム組成物は高いヒ
ステリシスロスにより、減衰特性に優れる。また実施例
2と実施例3の測定結果により、クロロプレンゴムの配
合を多くするとヒステリシスロスが高くなっていること
がわかる。
Comparison of the above measurement results shows that the sample of the example has a higher hysteresis loss than the sample of the comparative example. The high-damping rubber composition of this example has excellent damping characteristics due to high hysteresis loss. The measurement results of Example 2 and Example 3 show that the hysteresis loss increases as the amount of the chloroprene rubber increases.

【0029】[0029]

【発明の効果】この発明は上述のような構成であり、次
の効果を有する。
The present invention is configured as described above and has the following effects.

【0030】天然ゴムに合成ゴムとしてクロロプレンゴ
ムをブレンドすることにより、減衰特性が改善された高
減衰ゴム組成物を提供することができる。
By blending chloroprene rubber as a synthetic rubber with natural rubber, a high damping rubber composition having improved damping characteristics can be provided.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 FI C08L 11/00 C08L 11/00 F16F 15/08 F16F 15/08 D ──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. 6 Identification code FI C08L 11/00 C08L 11/00 F16F 15/08 F16F 15/08 D

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 天然ゴムとクロロプレンゴムと硫黄と亜
鉛華と、天然ゴムは加硫するがクロロプレンゴムは加硫
しない加硫促進剤とを具備することを特徴とする高減衰
ゴム組成物。
1. A high damping rubber composition comprising natural rubber, chloroprene rubber, sulfur and zinc white, and a vulcanization accelerator which vulcanizes natural rubber but does not vulcanize chloroprene rubber.
【請求項2】 前記加硫促進剤としてスルフェンアミド
系、又は/及びチアゾール系、又は/及びチウラム系の
ものを含有せしめた請求項1記載の高減衰ゴム組成物。
2. The high-damping rubber composition according to claim 1, wherein the vulcanization accelerator contains a sulfenamide-based, / or thiazole-based, or / and thiuram-based vulcanization accelerator.
JP32110497A 1997-11-21 1997-11-21 High damping rubber composition Pending JPH11153169A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32110497A JPH11153169A (en) 1997-11-21 1997-11-21 High damping rubber composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32110497A JPH11153169A (en) 1997-11-21 1997-11-21 High damping rubber composition

Publications (1)

Publication Number Publication Date
JPH11153169A true JPH11153169A (en) 1999-06-08

Family

ID=18128873

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100550079B1 (en) * 2004-08-26 2006-02-08 한국기계연구원 Damping device using india rubber and methode of manufacturing india rubber
JP2009024046A (en) * 2007-07-17 2009-02-05 Bridgestone Corp Vibration-proof rubber composition and vibration-proof rubber comprising the same
WO2011104966A1 (en) * 2010-02-24 2011-09-01 地方独立行政法人静岡県立病院機構 Self-reliance support tool
WO2012063548A1 (en) 2010-11-12 2012-05-18 電気化学工業株式会社 Chloroprene rubber composition, and vulcanizates and moldings thereof
WO2012070270A1 (en) 2010-11-26 2012-05-31 電気化学工業株式会社 Chloroprene rubber composition, and vulcanizate and molding thereof
KR20160020451A (en) 2013-06-03 2016-02-23 덴카 주식회사 Rubber composition and vulcanized molded body of same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100550079B1 (en) * 2004-08-26 2006-02-08 한국기계연구원 Damping device using india rubber and methode of manufacturing india rubber
JP2009024046A (en) * 2007-07-17 2009-02-05 Bridgestone Corp Vibration-proof rubber composition and vibration-proof rubber comprising the same
WO2011104966A1 (en) * 2010-02-24 2011-09-01 地方独立行政法人静岡県立病院機構 Self-reliance support tool
WO2012063548A1 (en) 2010-11-12 2012-05-18 電気化学工業株式会社 Chloroprene rubber composition, and vulcanizates and moldings thereof
US9260592B2 (en) 2010-11-12 2016-02-16 Denka Company Limited Chloroprene rubber composition, and vulcanizates and moldings thereof
WO2012070270A1 (en) 2010-11-26 2012-05-31 電気化学工業株式会社 Chloroprene rubber composition, and vulcanizate and molding thereof
US9505918B2 (en) 2010-11-26 2016-11-29 Denka Company Limited Chloroprene rubber composition, and vulcanizate and molding thereof
KR20160020451A (en) 2013-06-03 2016-02-23 덴카 주식회사 Rubber composition and vulcanized molded body of same
CN105377975A (en) * 2013-06-03 2016-03-02 电气化学工业株式会社 Rubber composition and vulcanized molded body of same

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