JPH04214746A - Vibration damping material - Google Patents
Vibration damping materialInfo
- Publication number
- JPH04214746A JPH04214746A JP40241190A JP40241190A JPH04214746A JP H04214746 A JPH04214746 A JP H04214746A JP 40241190 A JP40241190 A JP 40241190A JP 40241190 A JP40241190 A JP 40241190A JP H04214746 A JPH04214746 A JP H04214746A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- natural rubber
- acrylonitrile
- vibration damping
- damping
- 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
- 238000013016 damping Methods 0.000 title claims abstract description 36
- 239000000463 material Substances 0.000 title claims abstract description 16
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 25
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 25
- 229920001194 natural rubber Polymers 0.000 claims abstract description 25
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 16
- 239000004014 plasticizer Substances 0.000 claims abstract description 15
- 229920000570 polyether Polymers 0.000 claims abstract description 11
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 238000004073 vulcanization Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 abstract description 7
- 229920002432 poly(vinyl methyl ether) polymer Polymers 0.000 abstract description 3
- 239000004566 building material Substances 0.000 abstract 1
- 230000001419 dependent effect Effects 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 description 21
- 239000005060 rubber Substances 0.000 description 21
- 230000000052 comparative effect Effects 0.000 description 6
- 229920002554 vinyl polymer Polymers 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229920001778 nylon Polymers 0.000 description 4
- -1 Carn black Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229920005601 base polymer Polymers 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 150000005215 alkyl ethers Chemical class 0.000 description 2
- ZFMQKOWCDKKBIF-UHFFFAOYSA-N bis(3,5-difluorophenyl)phosphane Chemical compound FC1=CC(F)=CC(PC=2C=C(F)C=C(F)C=2)=C1 ZFMQKOWCDKKBIF-UHFFFAOYSA-N 0.000 description 2
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical class C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 1
- BPIUIOXAFBGMNB-UHFFFAOYSA-N 1-hexoxyhexane Chemical compound CCCCCCOCCCCCC BPIUIOXAFBGMNB-UHFFFAOYSA-N 0.000 description 1
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- POLCUAVZOMRGSN-UHFFFAOYSA-N dipropyl ether Chemical compound CCCOCCC POLCUAVZOMRGSN-UHFFFAOYSA-N 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、建築物や一般機器等に
適用される振動減衰材料の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvements in vibration damping materials used in buildings, general equipment, and the like.
【０００２】0002
【従来の技術】従来より、建築物の基礎や床、あるいは
一般機器における大地震時の免震を目的とする基礎免震
システムとしては、ゴムと金属板とを積層した積層ゴム
と、鋼材ダンパーの双方を併用することが一般に行われ
ている。この鋼材ダンパーは施工作業やメンテナンスの
手間と費用がかかるとともに、建築物等の地下空間を狭
くしてその有効利用を妨げるという欠点を有しており、
これを併用せずに、減衰ゴム材料の減衰性能を向上させ
ることで積層ゴムのみで免震を行うことが最近強く要求
されている。[Prior Art] Conventionally, base isolation systems for the purpose of isolating the foundations and floors of buildings or general equipment during large earthquakes have been made using laminated rubber made by laminating rubber and metal plates, and steel dampers. It is common practice to use both together. This steel damper has the drawback that it requires time and money for construction work and maintenance, and it also narrows the underground space of buildings, preventing its effective use.
Recently, there has been a strong demand for seismic isolation using only laminated rubber by improving the damping performance of the damping rubber material without using it in combination.
【０００３】このような高減衰の減衰ゴム材料に要求さ
れる特性は、従来の減衰ゴムと同様の機械的諸特性即ち
、クリープ特性、硬さ、引張り強度、伸びなどを保持し
ながら、減衰性能を大幅に向上させることがある。[0003] The properties required of such a high damping rubber material are as follows: while maintaining the same mechanical properties as conventional damping rubbers, such as creep properties, hardness, tensile strength, and elongation, may be significantly improved.
【０００４】これに対して積層ゴムにおける従来の減衰
ゴム材料としては、機械的諸特性とクリープ特性の優れ
た天然ゴムが使用されているが、天然ゴム自体は弾性が
非常に強く減衰性能はほとんど無い。一方、ブチルゴム
などの減衰性能の大きいゴムは、積層ゴムに必要とされ
るクリープ特性などに劣っているため積層ゴムのベース
ポリマーとしての使用は不可能である。On the other hand, natural rubber, which has excellent mechanical properties and creep properties, is used as a conventional damping rubber material for laminated rubber, but natural rubber itself has very strong elasticity and has little damping performance. None. On the other hand, rubbers with high damping performance such as butyl rubber cannot be used as base polymers for laminated rubber because they are inferior in creep properties required for laminated rubber.
【０００５】そこで、天然ゴムをベースポリマーとして
各種ポリマーや充填剤を配合することにより、天然ゴム
の有する優れた機械的特性を維持しながら減衰性能を大
幅に向上させることが検討されており、本発明者等はア
クリロニトリルーブタジエンゴムを添加配合することで
この課題をほぼ解決することをすでに提案した（特願平
２−１３４９２０号）。[0005] Therefore, studies have been conducted to significantly improve damping performance while maintaining the excellent mechanical properties of natural rubber by blending various polymers and fillers with natural rubber as a base polymer. The inventors have already proposed that this problem can be substantially solved by adding and blending acrylonitrile-butadiene rubber (Japanese Patent Application No. 134920/1999).
【０００６】しかしながら、天然ゴムをベースポリマー
としてアクリロニトリルーブタジエンゴムを添加配合し
た場合、弾性率の温度依存性（温度による弾性率の変化
）が大きいという問題があった。即ち、積層ゴムにおい
ては、ほぼ−１０〜４０℃の使用温度範囲において、材
料ゴムの弾性率の変化をできるだけ小さくして使用温度
範囲内での減衰特性を一定に保つことが必要とされるの
であるが、これについては未だ充分な特性が得られてい
なかった。However, when natural rubber is used as a base polymer and acrylonitrile-butadiene rubber is added and blended, there is a problem in that the temperature dependence of the elastic modulus (change in the elastic modulus due to temperature) is large. In other words, in the case of laminated rubber, it is necessary to keep the damping characteristics constant within the operating temperature range by minimizing the change in the elastic modulus of the material rubber as much as possible within the operating temperature range of approximately -10 to 40°C. However, sufficient characteristics have not been obtained yet.
【０００７】[0007]
【発明が解決しようとする課題】以上の点に鑑みて、本
発明は天然ゴムの有する機械的諸特性を良好に維持しつ
つ減衰性能を大幅に向上させ、特に約−１０〜４０℃の
温度範囲における弾性率の温度依存性を小さくして使用
温度範囲での減衰性能の安定化をも計ることの出来る高
減衰の振動減衰材料を提供することを目的とする。[Problems to be Solved by the Invention] In view of the above points, it is an object of the present invention to significantly improve the damping performance while maintaining good mechanical properties of natural rubber. It is an object of the present invention to provide a high-damping vibration damping material that can stabilize the damping performance in the service temperature range by reducing the temperature dependence of the elastic modulus in the temperature range.
【０００８】[0008]
【課題を解決するための手段】本発明は即ち、（イ）天
然ゴム１００重量部に、少なくとも（ロ）アクリロニト
リルーブタジエンゴム５〜３０重量部と、（ハ）ポリエ
ーテル系可塑剤５〜２０重量部とを配合した組成物を加
硫させてなることを特徴とする振動減衰材料に関する。[Means for Solving the Problems] The present invention provides (a) at least 5 to 30 parts by weight of acrylonitrile-butadiene rubber to 100 parts by weight of natural rubber, and (c) 5 to 20 parts by weight of a polyether plasticizer. The invention relates to a vibration damping material characterized by being made by vulcanizing a composition containing parts by weight.
【０００９】本発明者等は、積層ゴムのゴム材料として
機械特性、クリープ特性の良好な（イ）天然ゴムをベー
ス樹脂として（ロ）アクリロニトリルーブタジエンゴム
が配合された組成物における前述の課題を解決すべく研
究を進めたところ、特定の可塑剤即ち、（ハ）ポリエー
テル系可塑剤を所定量配合することにより、−１０〜４
０℃の温度範囲における弾性率の温度依存性を小さくし
て使用温度範囲での減衰性能の安定化を計ることが出来
ることを見い出し本発明に至ったものである。The present inventors have solved the above-mentioned problems in a composition containing (a) natural rubber as a base resin and (b) acrylonitrile-butadiene rubber, which has good mechanical properties and creep properties as a rubber material for laminated rubber. As a result of research to solve the problem, it was found that by blending a specified amount of a specific plasticizer, i.e. (c) polyether plasticizer, -10 to 4
The present invention was achieved by discovering that it is possible to stabilize the damping performance in the operating temperature range by reducing the temperature dependence of the elastic modulus in the 0°C temperature range.
【００１０】本発明における（イ）天然ゴムには他のポ
リマー材料、例えばクリープ特性に比較的優れるクロロ
プレンゴムなどを、天然ゴムの特性を損なわない範囲で
適宜併用しても良い。In the present invention, (a) natural rubber may be used in combination with other polymer materials, such as chloroprene rubber, which has relatively excellent creep properties, as long as the properties of natural rubber are not impaired.
【００１１】本発明における（ロ）アクリロニトリルー
ブタジエンゴムとしては、低分子量の液状ゴムおよび高
分子量の固形ゴムのいずれも使用することができる。液
状アクリロニトリルーブタジエンゴムは、ブタジエンと
アクリロニトリルを溶液中でラジカル重合して得られ、
粘度約１０００〜６０万ｃＰの公知のものの中から適宜
選択して使用することができる。固形アクリロニトリル
ーブタジエンゴムは、乳化重合等により得られ、分子量
は２万〜１００万程度である。これらのうちアクリロニ
トリル含有量を１０〜３０％の割合で含有するものは、
天然ゴムまたはクロロプレンゴムとの相溶性が極めて良
好で、しかも減衰性能が極めて高いので特に好ましい。
また、低分子量の分子鎖の末端にカルボキシル基が付加
した粘度約１０００〜６０万ｃＰの液状カルボキシ変性
アクリロニトリルーブタジエンゴムおよび、アクリロニ
トリルーブタジエンゴムにメタクリル酸などのアクリル
モノマーを共重合させて分子鎖の途中にカルボキシル基
を付加させた分子量２万〜１００万程度の固形ゴムなど
のカルボキシ変性アクリロニトリルーブタジエンゴムも
、天然ゴムとの相溶性および減衰性能が極めて良好であ
り好適する。また、（ロ）アクリロニトリルーブタジエ
ンゴムとしては、（イ）成分との相溶性などから液状の
ものが特に好ましい。As the (b)acrylonitrile-butadiene rubber in the present invention, both low molecular weight liquid rubber and high molecular weight solid rubber can be used. Liquid acrylonitrile-butadiene rubber is obtained by radical polymerizing butadiene and acrylonitrile in a solution.
It can be appropriately selected from known ones having a viscosity of about 1,000 to 600,000 cP. Solid acrylonitrile-butadiene rubber is obtained by emulsion polymerization or the like, and has a molecular weight of about 20,000 to 1,000,000. Among these, those containing acrylonitrile content at a ratio of 10 to 30% are:
It is particularly preferred because it has extremely good compatibility with natural rubber or chloroprene rubber and has extremely high damping performance. In addition, liquid carboxy-modified acrylonitrile-butadiene rubber with a viscosity of approximately 1,000 to 600,000 cP has a carboxyl group added to the end of a low molecular weight molecular chain, and a molecular chain obtained by copolymerizing acrylonitrile-butadiene rubber with an acrylic monomer such as methacrylic acid. Carboxy-modified acrylonitrile-butadiene rubber, such as solid rubber with a molecular weight of about 20,000 to 1,000,000, to which a carboxyl group is added in the middle, is also suitable because it has extremely good compatibility with natural rubber and damping performance. Furthermore, (b) a liquid acrylonitrile-butadiene rubber is particularly preferred from the viewpoint of compatibility with component (a).
【００１２】本発明における（ハ）ポリエーテル系可塑
剤としては、ポリビニルメチルエーテル、ポリビニルエ
チルエーテル、ポリビニルプロピルエーテル、ポリビニ
ルブチルエーテル、ポリビニルヘキシルエーテルなどの
ポリビニルアルキルエーテルがあり、中でも特に天然ゴ
ムとの相溶性も良く弾性率の温度依存性を小さくする点
からポリビニルメチルエーテルが好ましい。さらに、繰
り返し単位として一般式 −（ＣＨＲ）ｎ−Ｏ−
で表されるポリエーテル、具体的にはＲ＝ＣＨ３ 、ｎ
＝１のポリアセトアルデヒド、Ｒ＝Ｈ、ｎ＝２のポリエ
チレンオキシド、Ｒ＝ＣＨ３ 、ｎ＝２のポリプロピレ
ンオキシド、Ｒ＝Ｈ、ｎ＝３のポリシクロオキサブタン
などの脂肪族系ポリエーテルおよび芳香族系ポリエーテ
ルも使用できる。The polyether plasticizer (c) in the present invention includes polyvinyl alkyl ethers such as polyvinyl methyl ether, polyvinylethyl ether, polyvinyl propyl ether, polyvinyl butyl ether, and polyvinyl hexyl ether, among which polyvinyl alkyl ethers are particularly compatible with natural rubber. Polyvinyl methyl ether is preferred because it has good solubility and reduces temperature dependence of elastic modulus. Furthermore, as a repeating unit, the general formula -(CHR)n-O-
Polyether represented by, specifically R=CH3, n
Aliphatic polyethers and aromatics such as polyacetaldehyde where R = 1, polyethylene oxide where R = H, n = 2, polypropylene oxide where R = CH3, n = 2, polycyclooxabutane where R = H, n = 3 Polyethers can also be used.
【００１３】本発明においては、上述の各成分を（イ）
天然ゴム１００重量部に対して、（ロ）アクリロニトリ
ルーブタジエンゴムを５〜３０重量部と、（ハ）ポリエ
ーテル系可塑剤を５〜２０重量部の割合で配合する。
（ロ）成分がこれより少ないと減衰性能が不充分となり
、逆にこれより多く配合すると天然ゴムの良好な機械特
性の低下を生ずることがある。また（ハ）成分がこれよ
り少ないと弾性率の温度依存性を改善する効果が小さく
、逆にこれより多く配合しても弾性率の温度依存性改善
は見られず、むしろ他の減衰性能が低下する傾向にある
。In the present invention, each of the above-mentioned components (a)
To 100 parts by weight of natural rubber, (b) 5 to 30 parts by weight of acrylonitrile-butadiene rubber and (c) 5 to 20 parts by weight of polyether plasticizer are blended. If the amount of component (b) is less than this, the damping performance will be insufficient, whereas if it is added more than this, the good mechanical properties of natural rubber may deteriorate. Furthermore, if the amount of component (c) is less than this, the effect of improving the temperature dependence of the elastic modulus is small, and conversely, even if it is added in a larger amount, no improvement in the temperature dependence of the elastic modulus is observed, and rather other damping performance is It is on a declining trend.
【００１４】本発明の振動減衰材料は、これらの（イ）
乃至（ハ）成分を所定割合で６０〜７０℃の温度で充分
混合し常法により加硫させて製造される。混合段階でさ
らにカーンブラックなどの補強用充填剤やプロセスオイ
ル、あるいはフェライト粉末、天然ゴムがグラフト結合
されているナイロン繊維などの減衰性能を向上させるた
めの充填剤を本発明の効果を損なわない範囲で適宜添加
することができる。天然ゴムがグラフト結合されている
ナイロン繊維としては、表面に天然ゴムが化学的にグラ
フト結合しているナイロン短繊維があり、例えばナイロ
ン繊維と天然ゴムが１：２の比率（重量）で平均径約０
．２μｍ以上、長さ１ｍｍ程度の商品名ＦＲＲ（宇部興
産社製）などがあり、これを（イ）天然ゴム１００重量
部に対して５〜３０重量部の割合で配合すると減衰性能
がさらに向上するので好ましい。なお、本発明の振動減
衰材料を積層ゴムに使用する場合には加硫後の最終硬度
がＪＩＳ−Ａ硬度で４０〜７０度となるようにすれば必
要充分な機械特性が得られる。The vibration damping material of the present invention has these (a)
It is manufactured by thoroughly mixing components (c) to (iii) in a predetermined ratio at a temperature of 60 to 70° C. and vulcanizing the mixture by a conventional method. In the mixing stage, reinforcing fillers such as Carn black, process oil, ferrite powder, fillers for improving damping performance such as nylon fibers grafted with natural rubber, etc., may be added within a range that does not impair the effects of the present invention. It can be added as appropriate. Nylon fibers with natural rubber grafted onto them include short nylon fibers with natural rubber chemically grafted onto their surfaces. For example, when the ratio (weight) of nylon fibers and natural rubber is 1:2, the average diameter Approximately 0
．． There are products such as FRR (manufactured by Ube Industries, Ltd.) with a length of 2 μm or more and a length of about 1 mm, and damping performance is further improved when this is blended at a ratio of 5 to 30 parts by weight to (a) 100 parts by weight of natural rubber. Therefore, it is preferable. In addition, when the vibration damping material of the present invention is used in a laminated rubber, necessary and sufficient mechanical properties can be obtained if the final hardness after vulcanization is 40 to 70 degrees in JIS-A hardness.
【００１５】以上述べたように、本発明においては、ク
リープ特性などの機械特性の良好な（イ）天然ゴムをベ
ースとして、これに（ロ）アクリロニトリルーブタジエ
ンゴムを所定比率で配合するので、天然ゴムの有する良
好な機械特性を保持しつつその減衰性能を大幅に向上さ
せている。As described above, in the present invention, (a) natural rubber having good mechanical properties such as creep properties is used as a base, and (b) acrylonitrile-butadiene rubber is blended in a predetermined ratio. It maintains the good mechanical properties of rubber while significantly improving its damping performance.
【００１６】そしてこれに（ハ）ポリエーテル系可塑剤
を所定量配合するので、（イ）成分と（ロ）成分との配
合から得られる前記のごとき良好な機械特性と減衰性能
を損なうこと無く、約−１０〜４０℃の温度範囲におけ
る弾性率の変化を最小にとどめ、ひいてはこのような広
い温度範囲における減衰性能の安定化を計ることができ
る。また、（イ）天然ゴムや（ロ）アクリロニトリルー
ブタジエンゴムに可塑剤として通常使用されるフタル酸
エステル系可塑剤や二塩基酸エステル系可塑剤、燐酸エ
ステル系可塑剤などを使用しても、弾性率の温度依存性
改善には向上が見られず、（ハ）ポリエーテル系可塑剤
を選択使用することによってこれらの効果を発揮する。[0016] Since a predetermined amount of (c) polyether plasticizer is blended with this, the above-mentioned good mechanical properties and damping performance obtained from the combination of components (a) and (b) are not impaired. , it is possible to minimize the change in elastic modulus in the temperature range of about -10 to 40°C, thereby stabilizing the damping performance in such a wide temperature range. Furthermore, even if phthalate ester plasticizers, dibasic acid ester plasticizers, phosphate ester plasticizers, etc., which are commonly used as plasticizers in (a) natural rubber and (b) acrylonitrile-butadiene rubber, are used, No improvement was observed in the temperature dependence of elastic modulus, and these effects can be achieved by selectively using (iii) a polyether plasticizer.
【００１７】また、このようにして得られた振動減衰材
料を積層ゴムに使用すれば、基礎免震システムにおいて
鋼材ダンパーを併用する必要がない。[0017] Furthermore, if the vibration damping material obtained in this manner is used in the laminated rubber, there is no need to use a steel damper in the foundation seismic isolation system.
【００１８】[0018]
【実施例】本発明の実施例について説明する。[Example] An example of the present invention will be described.
【００１９】実施例１〜３
表に示す配合で、各成分を配合し加硫して振動減衰材料
を製造した。これを用いて硬さ（Ｈｓ）、引張り強さ、
伸び、ｔａｎ δ値（２３℃、０．３Ｈｚ、ＤＭＴＡに
より測定）、−１０℃および４０℃における弾性率の変
化率（−１０℃における値／４０℃における値）、等価
減衰定数（２５℃、振動０．５Ｈｚのサイン波、剪断歪
１００％）をそれぞれ測定した。これらの結果を表に示
す。Examples 1 to 3 Vibration damping materials were manufactured by blending and vulcanizing each component according to the formulation shown in the table. Using this, hardness (Hs), tensile strength,
Elongation, tan δ value (23°C, 0.3Hz, measured by DMTA), change rate of elastic modulus at -10°C and 40°C (value at -10°C/value at 40°C), equivalent damping constant (25°C, A sine wave with a vibration frequency of 0.5 Hz and a shear strain of 100%) were measured. These results are shown in the table.
【００２０】比較例１〜４
比較として、（ハ）成分を欠如するもの（比較例１）、
（ハ）成分を過剰に含有するもの（比較例２）、（ハ）
成分の代わりに汎用可塑剤であるジオクチルアジペート
（ＤＯＡ）を配合したもの（比較例３）、同様に（ハ）
成分の代わりに汎用可塑剤であるジオクチルフタレート
を配合したもの（比較例４）について、それぞれ表に示
す配合で各成分を配合して加硫し、実施例１と同様に試
験した。結果を表に示す。Comparative Examples 1 to 4 For comparison, those lacking component (iii) (Comparative Example 1),
(C) Those containing excessive components (Comparative Example 2), (C)
Comparative Example 3, in which dioctyl adipate (DOA), a general-purpose plasticizer, was added instead of the component (Comparative Example 3);
Regarding the product (Comparative Example 4) in which dioctyl phthalate, a general-purpose plasticizer, was blended instead of the other components, each component was blended and vulcanized in the proportions shown in the table, and tested in the same manner as in Example 1. The results are shown in the table.
【００２１】[0021]
【表１】[Table 1]
【００２２】[0022]
【発明の効果】以上の実施例からも明らかなように、本
発明の振動減衰材料は、−１０〜４０℃の幅広い温度範
囲に亘ってヤング率の温度変化を極めて小さくすること
ができ、またその他の機械特性や減衰特性を良好に保持
している。Effects of the Invention As is clear from the above examples, the vibration damping material of the present invention can extremely reduce the temperature change in Young's modulus over a wide temperature range of -10 to 40°C. Other mechanical properties and damping properties are maintained well.
Claims (1)
も（ロ）アクリロニトリルーブタジエンゴム５〜３０重
量部と、（ハ）ポリエーテル系可塑剤５〜２０重量部と
を配合した組成物を加硫させてなることを特徴とする振
動減衰材料。Claim 1: A composition comprising (a) 100 parts by weight of natural rubber, at least (b) 5 to 30 parts by weight of acrylonitrile-butadiene rubber, and (c) 5 to 20 parts by weight of a polyether plasticizer. A vibration damping material characterized by being made by vulcanization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP40241190A JPH04214746A (en) | 1990-12-14 | 1990-12-14 | Vibration damping material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP40241190A JPH04214746A (en) | 1990-12-14 | 1990-12-14 | Vibration damping material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04214746A true JPH04214746A (en) | 1992-08-05 |
Family
ID=18512231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP40241190A Pending JPH04214746A (en) | 1990-12-14 | 1990-12-14 | Vibration damping material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04214746A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104151635A (en) * | 2014-08-03 | 2014-11-19 | 北京化工大学 | High performance rubber composite for shock insulation supports and preparation method thereof |
| CN110452427A (en) * | 2019-09-03 | 2019-11-15 | 衡橡科技股份有限公司 | A kind of architectural vibration-insulation rubber supporting seat sizing material and preparation method thereof |
-
1990
- 1990-12-14 JP JP40241190A patent/JPH04214746A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104151635A (en) * | 2014-08-03 | 2014-11-19 | 北京化工大学 | High performance rubber composite for shock insulation supports and preparation method thereof |
| CN104151635B (en) * | 2014-08-03 | 2015-11-04 | 北京化工大学 | A kind of shock isolating pedestal high-performance rubber matrix material and preparation method thereof |
| CN110452427A (en) * | 2019-09-03 | 2019-11-15 | 衡橡科技股份有限公司 | A kind of architectural vibration-insulation rubber supporting seat sizing material and preparation method thereof |
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