JPS6122934A - Vibration-damping material - Google Patents
Vibration-damping materialInfo
- Publication number
- JPS6122934A JPS6122934A JP6241584A JP6241584A JPS6122934A JP S6122934 A JPS6122934 A JP S6122934A JP 6241584 A JP6241584 A JP 6241584A JP 6241584 A JP6241584 A JP 6241584A JP S6122934 A JPS6122934 A JP S6122934A
- Authority
- JP
- Japan
- Prior art keywords
- damping material
- vibration
- temperature
- damping
- layer
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は振動減衰効果の温度特性が改善された制振材に
関するものであシ、温度変動の大きな機器や激しい外気
温の変動下で使用される機器類用として使用できる制振
材に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a vibration damping material with improved temperature characteristics of vibration damping effect, and is suitable for use in equipment with large temperature fluctuations or under severe outside temperature fluctuations. The present invention relates to vibration damping materials that can be used for equipment used in various applications.
快適な生活環境を保つ為に、また精密な機器類の品質、
機能を維持する為に振動騒音の防止は重要である。振動
防止は通常バネ類やゴム、プラスチック類を用いて行な
われる。しかしながら、振動源が広帯域の周波数を持つ
場合や系の共振点が多数存在する場合には制振材の弾性
係数の設計によって系の共振を避ける事は困難である。In order to maintain a comfortable living environment, the quality of precision equipment,
Prevention of vibration noise is important to maintain functionality. Vibration prevention is usually done using springs, rubber, or plastics. However, when the vibration source has a broadband frequency or when the system has many resonance points, it is difficult to avoid system resonance by designing the elastic coefficient of the damping material.
共振にｉる振動を緩和する為には制振材の粘性抵抗が十
分な大きさである事が必要である。In order to alleviate the vibration caused by resonance, it is necessary that the viscous resistance of the damping material be sufficiently large.
今、質量がｍの質点に弾性係数かに、粘性がＣである制
振材を付は加えたー質点系七デμで考えると、振動の運
動方程式は
ｍｘ ＋ｃｉ＋ｋｘ ＝ ｆｆｔ＞
で表わされる。ここでｆ（ｔ）は質点に働らく外力を表
わしている。ｉた外力が周波数Ｗである調和振動とすれ
ば、振動伝達率τは次式で表わされる。Now, considering a mass point system of mass m with an elastic modulus and a vibration damping material with a viscosity C, the equation of motion of vibration is expressed as mx + ci + kx = fft>. Here, f(t) represents the external force acting on the mass point. If the external force i is a harmonic vibration with a frequency W, the vibration transmissibility τ is expressed by the following equation.
に大きくなる。共振点における伝達率τＲは次の式％式
％
したがって、共振点における異常に大きな振、動を押さ
える為には粘性係数Ｃの大きな制振材を用いなければな
らない。becomes larger. The transmission rate τR at the resonance point is expressed by the following formula:% Formula % Therefore, in order to suppress abnormally large vibrations and motions at the resonance point, a damping material with a large viscosity coefficient C must be used.
粘性係数の大きな制振材料として、ゴム類、プラスチッ
ク類及びそれらの複合材料が広く用いら−れている。し
かし、これらの材料の粘性係数は大きな温度依存性を持
つという欠点がある。すなわち、これらの材料の粘性係
数はガラス転移点及び副ガラス転移点温度付近において
は大きな値を持つが、その前後の温度においては急激に
減少してしまう性質がある。したがって、ゴム類やプラ
スチックチック類またはそれらの複合材料の粘性による
大きな振動減衰機能社ガラス転移点や副ガラス転移点付
近に限られてしまうという制約がある。Rubbers, plastics, and composite materials thereof are widely used as vibration damping materials with large viscosity coefficients. However, the disadvantage is that the viscosity coefficients of these materials have a strong temperature dependence. That is, the viscosity coefficients of these materials have a large value near the glass transition point and sub-glass transition point temperature, but have a property of rapidly decreasing at temperatures around the glass transition point and the sub-glass transition point. Therefore, there is a restriction that the vibration damping function is limited to the vicinity of the glass transition point or sub-glass transition point due to the viscosity of rubbers, plastics, or composite materials thereof.
このことは広い温度範囲において振動防止を計らなけれ
ばならない時に社非常に不都合な問題となってくる。す
なわち、厳しい外気温の変動下にさらされる機器や大き
な温度の変動を伴なう機器の防振対策を行なうには、広
い温度範囲に渡って振動減衰効果を持つ制振材料が必要
となる。。This becomes a very inconvenient problem when vibration prevention must be achieved over a wide temperature range. In other words, in order to provide vibration isolation measures for equipment that is exposed to severe outside temperature fluctuations or that is accompanied by large temperature fluctuations, vibration damping materials that have a vibration damping effect over a wide temperature range are required. .
本発明は以上の様な欠点を改良し、広範囲な温度領域に
おいて振動減衰機能を保持し先制振材を提供する事を目
的としている。The present invention aims to improve the above-mentioned drawbacks and provide a pre-vibration damping material that maintains a vibration damping function over a wide temperature range.
本発明は異なるガラス転移点温度を持つ制振材層を層状
に貼り合わせて、二層以上の積層構造としたことを特徴
とするものである。The present invention is characterized in that vibration damping material layers having different glass transition temperatures are laminated together to form a laminated structure of two or more layers.
以下に、本発明の一実施例を図によシ説明する。 An embodiment of the present invention will be explained below with reference to the drawings.
第１図は本発明を実施し九２層構造制振材Ｓである。１
は１０℃にガラス転移点を持つ制振材層で、エポキシ系
樹脂に６０重量％のフェライトが配合されたもので必る
。２は５６℃にガラス転移点を持つ制振材層で、エポキ
シ系樹脂に５０重量％のフェライトが配合されたもので
ある。制振材層１と２はエポキシ系接着材で層状に貼り
合わされて、二層の積層構造になっている。FIG. 1 shows a 92-layer vibration damping material S in which the present invention is implemented. 1
is a vibration damping material layer having a glass transition point at 10°C, and is made of epoxy resin mixed with 60% by weight of ferrite. 2 is a vibration damping material layer having a glass transition point at 56° C., and is made of an epoxy resin mixed with 50% by weight of ferrite. The damping material layers 1 and 2 are laminated together using an epoxy adhesive to form a two-layer laminated structure.
第２図は前述した二層構造の制振材と単一層による制振
材の微動減衰比を温度に対してプロットしたものである
。曲線８は単一層の制振材ｌ１曲線５は単一層の制振材
２、曲線４紘制振材層１と２とを貼り合わせた２層構造
の制振材Ｓにおける振動減衰比をそれぞれ示している。FIG. 2 is a plot of the microtremor damping ratios of the two-layer damping material and the single-layer damping material described above versus temperature. Curve 8 is a single-layer damping material l1 Curve 5 is a single-layer damping material 2, Curve 4 is the vibration damping ratio of a two-layer damping material S in which damping material layers 1 and 2 are bonded together. It shows.
尚、各制振材１．２の大きさは８００ Ｘ ８０ Ｘ
１０を麿としである。単一層の制振材１では高温側、単
一層の制振材２では低温側で対数減衰率の低下が生じて
いるが、本廃明に係る２層構造の制振材Ｓでは０〜５０
℃の温度領域に渡って０．０７より大きな対数減衰率を
保っている。The size of each damping material 1.2 is 800 x 80 x
10 is Maro. In the single layer damping material 1, the logarithmic damping rate decreases on the high temperature side, and in the single layer damping material 2, on the low temperature side, the logarithmic damping rate decreases from 0 to 50 in the two layer structure damping material S according to the present invention.
It maintains a logarithmic decay rate greater than 0.07 over the temperature range of °C.
゛第８図は本実施例にシニ層構造制振材を鉄板（８００
Ｘ８０Ｘ５ｔ ）に貼り付けた時の制振効果を示したも
のである。０〜５０℃の温度範囲に渡って０．０４以上
の対数減衰率を保持しており（鉄板の対数減衰率＜０．
００５）、十分な制振効果が得られた。゛Figure 8 shows a steel plate (800
This figure shows the vibration damping effect when attached to a paper (X80X5t). It maintains a logarithmic attenuation rate of 0.04 or more over the temperature range of 0 to 50°C (logarithmic attenuation rate of iron plate <0.
005), a sufficient vibration damping effect was obtained.
以上説明したように本発明に係る多層構造制振材は、温
度に応じて対応するガラス転移点もしくは副ガラス転移
点温度を持つ層の粘性が高くなるので、広い温度領域に
渡って振動減衰機能を保持できる（自己接着性を兼ね備
え先制振材では接着材を用いる必要はない）。As explained above, the multilayer vibration damping material according to the present invention has a vibration damping function over a wide temperature range because the viscosity of the layer having the corresponding glass transition point or sub-glass transition temperature increases depending on the temperature. (There is no need to use an adhesive for pre-damping materials that have self-adhesive properties.)
また一般に制振材として用−られるプフスチッ・り類、
ゴム類及びそれ等の複合材料は熱伝導率が小さいものＫ
ならざるを得ない。したがって、外部環境に比べて温度
の高い、あるいは低い機器の。In addition, poufstic materials, which are generally used as vibration damping materials,
Rubbers and their composite materials have low thermal conductivity.K
I have no choice but to do so. Therefore, the temperature of the equipment is higher or lower than the external environment.
振動部位に制振材を塗布した場合、制振材層の厚み方向
の温度勾配は非常に大きくなってしまう。When a damping material is applied to a vibrating region, the temperature gradient in the thickness direction of the damping material layer becomes extremely large.
この様な状況では鋭い温度特性を持っ先制振材は有効に
作用しなくなる。本発明による制振材では対象となる振
動部位と外部環境の温度に応じて任意の面を貼り付ける
ことができるので、制振材の機能が十分に発揮できる効
果を有するものである。In such a situation, the pre-damping material, which has sharp temperature characteristics, will no longer work effectively. Since the damping material according to the present invention can be attached to any surface depending on the target vibration site and the temperature of the external environment, it has the effect of fully exhibiting the function of the damping material.
尚、前述した機能から言って制振材層は二層としたが、
これに限定する必要はなく、三層以上の多層であっても
良い。In addition, considering the above-mentioned function, the damping material layer was made into two layers, but
There is no need to limit it to this, and it may be multilayered with three or more layers.
第１図は本発明による制振材の概念図、第２図は本発明
による制振材の対数減衰率と温度との関係を表した図、
第８図は本発明による制振材を８００Ｘ８０Ｘ５＋ｗの
鉄板（５５−４１）に貼り付けた時の対数減衰率と温度
との関係を表わした図である。
１．２・・−制振材層、Ｓ・・・制振材。
特許出願人 日本電気株式会社
第１図
算２図
温度（０Ｃ）−□
第３図
温度（０Ｃ）FIG. 1 is a conceptual diagram of the damping material according to the present invention, and FIG. 2 is a diagram showing the relationship between the logarithmic damping rate and temperature of the damping material according to the present invention.
FIG. 8 is a diagram showing the relationship between logarithmic damping rate and temperature when the damping material according to the present invention is attached to an 800x80x5+w iron plate (55-41). 1.2...-damping material layer, S... damping material. Patent applicant NEC Corporation Figure 1 Calculation Figure 2 Temperature (0C) -□ Figure 3 Temperature (0C)
Claims (1)
合わせて、２層以上の積層構造としたことを特徴とする
制振材。(1) A damping material characterized by having a laminated structure of two or more layers by laminating damping material layers having different viscoelastic temperature characteristics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6241584A JPS6122934A (en) | 1984-03-30 | 1984-03-30 | Vibration-damping material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6241584A JPS6122934A (en) | 1984-03-30 | 1984-03-30 | Vibration-damping material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6122934A true JPS6122934A (en) | 1986-01-31 |
Family
ID=13199492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6241584A Pending JPS6122934A (en) | 1984-03-30 | 1984-03-30 | Vibration-damping material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6122934A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0284329A (en) * | 1988-09-20 | 1990-03-26 | Nec Corp | Fiber reinforced composite material |
| US5591661A (en) * | 1992-04-07 | 1997-01-07 | Shiota; Philip | Method for fabricating devices for electrostatic discharge protection and voltage references, and the resulting structures |
| JP2013018242A (en) * | 2011-07-13 | 2013-01-31 | Nitto Denko Corp | Adhesive-type damping material |
-
1984
- 1984-03-30 JP JP6241584A patent/JPS6122934A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0284329A (en) * | 1988-09-20 | 1990-03-26 | Nec Corp | Fiber reinforced composite material |
| JPH0554825B2 (en) * | 1988-09-20 | 1993-08-13 | Nippon Electric Co | |
| US5591661A (en) * | 1992-04-07 | 1997-01-07 | Shiota; Philip | Method for fabricating devices for electrostatic discharge protection and voltage references, and the resulting structures |
| JP2013018242A (en) * | 2011-07-13 | 2013-01-31 | Nitto Denko Corp | Adhesive-type damping material |
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