JPH0354261A - Viscoelastic resin composition for vibration-damping material - Google Patents

Viscoelastic resin composition for vibration-damping material

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Publication number
JPH0354261A
JPH0354261A JP18878789A JP18878789A JPH0354261A JP H0354261 A JPH0354261 A JP H0354261A JP 18878789 A JP18878789 A JP 18878789A JP 18878789 A JP18878789 A JP 18878789A JP H0354261 A JPH0354261 A JP H0354261A
Authority
JP
Japan
Prior art keywords
resin
vibration
viscoelastic
inorganic powder
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
Application number
JP18878789A
Other languages
Japanese (ja)
Inventor
Nobuo Kadowaki
伸生 門脇
Hiroshi Endo
遠藤 絋
Shinichi Nagahora
長洞 伸一
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel 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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP18878789A priority Critical patent/JPH0354261A/en
Publication of JPH0354261A publication Critical patent/JPH0354261A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To obtain the title composition which can be improved in bonding strength and vibration-damping properties as compared with a compound vibration-damping metal plate made by using a viscoelastic resin composition free from an inorganic powder component, by adding an inorganic powder component having a specified particle diameter to a viscoelastic vibration- damping resin. CONSTITUTION:This composition is prepared by adding an inorganic powder component having a mean particle diameter <= one third of the thickness of the resin layer to a viscoelastic vibration-damping resin. The amount of the inorganic powder component added is desirably 1-70wt.% for calcium carbonate, 1-30wt.% for silica or 1-30wt.% for kaolin based on the total resin composition. It is desirable that the above viscoelastic vibration-damping resin be amorphous from the viewpoint of improved vibration-damping properties, and examples include an amorphous polyester, an amorphous polyamide, an amorphous polyamideimide, a polyimide, a polyurethane, an acrylic resin and an amorphous polyolefin resin.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は制振材料用粘弾性樹脂組成物に関し、更に詳し
くは機械、建築物,乗物等の各種構造物の構造部材また
はその一部として使用される複層構造の制振材料にその
中間層として用いられる制振材料用粘弾性樹脂およびそ
の組成物に関する。
Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a viscoelastic resin composition for vibration damping materials, and more specifically for use as structural members or parts of various structures such as machines, buildings, and vehicles. The present invention relates to a viscoelastic resin for a vibration damping material used as an intermediate layer in a multi-layered vibration damping material and a composition thereof.

(従来の技術) 近年、交通機関の発達や住居の工場への接近に伴って騒
音や振動の問題が公害として社会問題化するようになり
、また、職場においても作業環境の改善を目的として騒
音や振動を規制する傾向にある。このような傾向に対応
して、騒音源や振動源である金属材料に対して制振性能
、即ち騒音を発生する部材自体の振動エネルギーを熱エ
ネルギーに変換し、振動速度あるいは振動振幅を減衰さ
せて音響放射を少なくする機能を付与し、さらにその機
能の向上を図ることが要請されている。
(Conventional technology) In recent years, with the development of transportation systems and the proximity of residences to factories, noise and vibration problems have become a social problem as pollution. and vibrations. In response to this trend, we are developing damping performance for metal materials that are noise sources and vibration sources, that is, converting the vibration energy of the noise-generating member itself into thermal energy and damping the vibration speed or vibration amplitude. There is a need to add a function to reduce acoustic radiation, and to further improve this function.

このような要請に基づいて、かかる性能を発揮する制振
材料の一つとして、従来より金属層間に粘弾性を有する
中間層を挟み込んだ複層構造の複台型制振材料が提案さ
れている。そして、この複合型制振材料は、自動車のオ
イルパン、エンジン力バー、ダッシュパネル、ホノバー
のシュート部、搬送12備のストッパー、家電機器、そ
の他金属加工機械の振動低減部材や振動防止が望まれる
精密機械の構造部材等において検討され、採用されてい
る. 一般に、このような複合型制振材料の制振性能は、その
中間層を構或する粘弾性中間層の性能に依存している。
Based on such demands, a multi-unit vibration damping material with a multilayer structure in which a viscoelastic intermediate layer is sandwiched between metal layers has been proposed as one of the vibration damping materials that exhibits such performance. . This composite vibration damping material is desired as a vibration reduction member or vibration prevention member for automobile oil pans, engine power bars, dash panels, hoover chutes, conveyor 12 stoppers, home appliances, and other metal processing machines. It has been studied and adopted for structural members of precision machinery. Generally, the damping performance of such a composite vibration damping material depends on the performance of the viscoelastic intermediate layer that constitutes the intermediate layer.

この制振性能を損失係数で表すと、この制振性能はある
一定温度でピーク特性を示し、このピーク特性温度の近
傍で使用するのが最も効果的であることが知られている
. 従来、このような複合型制振材料の粘弾性中間層を構成
する粘弾性組成物としては、ポリエステル単体(特開昭
50− 143880号公報)あるいはポリエステルに
可塑剤を添加したもの(特開昭51.−93770号公
報)、ポリウレタンフォーム単体(特開昭51−9LQ
al号公報)あるいはポリアミド単体(特開昭56−1
59160公報)、エチレンー酢酸ビニル共重合体単体
(特開昭57−34949号公報)、ポリビニルブチラ
ールあるいはポリビニルブチラールとポリ酢酸ビニルと
の組成物に可塑剤、粘着付与物質を配合したもの(特公
昭55−27975号)、インシアネートプレボリマー
とビニルモノマーの共重合体(特公昭52−26554
号公報)、または特公昭39−12451号公報、特公
昭45−34703号、特開昭62−74645号公報
に示される共重合体等が知られている。
When this damping performance is expressed as a loss coefficient, it is known that the damping performance shows a peak characteristic at a certain temperature, and is most effective when used near this peak characteristic temperature. Conventionally, the viscoelastic compositions constituting the viscoelastic intermediate layer of such composite damping materials have been polyester alone (Japanese Patent Application Laid-open No. 143880/1983) or polyester with a plasticizer added (Japanese Patent Application Laid-open No. 143880/1983). 51.-93770), polyurethane foam alone (JP-A-51-9LQ)
al publication) or polyamide alone (JP-A-56-1
59160), ethylene-vinyl acetate copolymer alone (Japanese Patent Publication No. 57-34949), polyvinyl butyral or a composition of polyvinyl butyral and polyvinyl acetate mixed with a plasticizer and a tackifying substance (Japanese Patent Publication No. 55/1989) -27975), copolymer of incyanate prebolimer and vinyl monomer (Japanese Patent Publication No. 52-26554)
Copolymers shown in Japanese Patent Publication No. 39-12451, Japanese Patent Publication No. 45-34703, and Japanese Patent Application Laid-Open No. 62-74645 are known.

(発明が解決しようとする課M) ところで、複合型制振材料は、先ず第一に損失係数の値
が高いこと.粘弾性組威物で構成される粘弾性中間層と
金属層との間の接着強度が高いことが要求されるが、上
記従来の粘弾性組成物で製造される複合型制振材料にお
いてはそのいずれの性能についても問題があり充分満足
し得るものではなかった。特に、常温付近で高い性能を
発揮するためには,ガラス転移温度を室温以下に設定す
る必要があり従来の公知の樹脂ではガラス転移温度を下
げると接着強度が大幅に低下し、従って高い接着性が要
求される用途では使用できないでいた。
(Problem M to be solved by the invention) By the way, first of all, composite vibration damping materials have a high value of loss coefficient. High adhesive strength is required between the viscoelastic intermediate layer made of a viscoelastic composite and the metal layer, but composite vibration damping materials manufactured using the above-mentioned conventional viscoelastic compositions do not have this property. Both performances had problems and were not fully satisfactory. In particular, in order to exhibit high performance near room temperature, it is necessary to set the glass transition temperature below room temperature, and with conventional known resins, lowering the glass transition temperature significantly reduces adhesive strength, resulting in high adhesive properties. could not be used in applications requiring

(課題を解決するための手段) 本発明者はこうした状況に鑑み、常温における接着強度
が高く、かつ、常温付近での制振性能を高度に保つ(例
えば損失係数で0.1以上)制振材料用粘弾性樹脂組成
物について鋭意検討を重ねた結果、本願発明に到達した
(Means for Solving the Problems) In view of these circumstances, the present inventor has developed a vibration damper that has high adhesive strength at room temperature and maintains high vibration damping performance near room temperature (for example, a loss coefficient of 0.1 or more). As a result of intensive studies on viscoelastic resin compositions for materials, the present invention has been achieved.

即ち、本発明は複合型制振金属板の粘弾性制振樹脂中に
平均粒径が樹脂層厚の1/3以下である無機粉末成分を
加えたことを特徴とする制振材料用粘弾性樹脂組成物で
あり、特に無機粉末成分として,炭酸カルシウムを1〜
70重量%,より好ましくは1〜60重量%添加したも
の、あるいは無機粉末成分として,シリカを1〜30重
量%、より好ましくは1〜20重量%添加したもの、あ
るいは無機粉末成分として、カオリンを1〜30重量%
、より好ましくは1〜20重量%添加したものであるこ
とが望ましい。
That is, the present invention provides a viscoelastic vibration damping material for a composite vibration damping metal plate, characterized in that an inorganic powder component having an average particle size of 1/3 or less of the resin layer thickness is added to the viscoelastic vibration damping resin of a composite vibration damping metal plate. It is a resin composition, especially containing 1 to 10% of calcium carbonate as an inorganic powder component.
70% by weight, more preferably 1 to 60% by weight, or 1 to 30% by weight, more preferably 1 to 20% by weight of silica as an inorganic powder component, or kaolin as an inorganic powder component. 1-30% by weight
, more preferably 1 to 20% by weight.

(作 用) 本発明の制振材料用粘弾性樹脂組成物に使用される粘弾
性制振樹脂は制振性能向上の点から非品性であることが
望ましい。樹脂としては例えば,非品性ポリエステル、
非品性ボリアミド、非品性ポリアミドイミト,ポリイミ
ド、ポリウレタン、ポリウレタンウレア、ボリウレア,
アクリル系樹脂、エボキシ系樹脂、酢酸ビニル系樹脂、
非品性ポリオレフィン樹脂、あるいは、各種樹脂をブレ
ントしたものや、共重合体等が挙げられる。高温での接
着性を向上させる目的で架橋剤を用いても良い。
(Function) The viscoelastic damping resin used in the viscoelastic resin composition for damping material of the present invention is desirably of poor quality from the viewpoint of improving damping performance. Examples of resins include non-grade polyester,
Non-grade polyamide, non-grade polyamide imite, polyimide, polyurethane, polyurethane urea, polyurea,
Acrylic resin, epoxy resin, vinyl acetate resin,
Examples include non-grade polyolefin resins, blends of various resins, copolymers, and the like. A crosslinking agent may be used for the purpose of improving adhesiveness at high temperatures.

粘弾性制振樹脂に添加する無機粉末成分は樹脂との界面
密着性を向上させる目的で種々の表面改質剤による表面
改質を施しても良い。表面改質剤としてはシランカップ
リング剤、チタネートカップリング剤等の無機系改質剤
または有機系プライマー等が挙げられる。
The inorganic powder component added to the viscoelastic damping resin may be surface-modified with various surface modifiers for the purpose of improving interfacial adhesion with the resin. Examples of the surface modifier include inorganic modifiers such as silane coupling agents and titanate coupling agents, and organic primers.

本発明は、上記粘弾性制振樹脂レこ無機粉末成分を加え
ることを特徴とする。複合型制振材料の接着剤として本
発明の制振材料用粘弾性樹脂組成物を用いることにより
常温における樹脂単身の接着強度より高い接着強度が得
られ、制振性能を高度に確保できるものである。
The present invention is characterized in that an inorganic powder component is added to the above-mentioned viscoelastic damping resin. By using the viscoelastic resin composition for vibration damping materials of the present invention as an adhesive for composite vibration damping materials, adhesive strength higher than that of the resin alone at room temperature can be obtained, and a high level of vibration damping performance can be ensured. be.

無機粉末の種類としては広範囲なものが適応可能である
が、特に、炭酸カルシウム、シリカ、カオリン、カーボ
ンブラック,アルミナ、酸化チタン、亜鉛華、マイ力、
黒鉛等が望ましい特性を有する。即ち、上記粘弾性制振
樹脂のガラス転移点に与える影響が少なく、制振性能に
悪影響を及ぼさない無機粉末である。本発明に用いる無
機粉末成分の粒径を中間樹脂層厚の1/3以下にするこ
とにより樹脂単体の場合に得られる接着強度より高い接
着強度を得ることができる。本発明に用いる無機粉末成
分の粒径が中間樹脂層厚の1/3を越えると接着強度が
低下するので好ましくない。
A wide range of inorganic powders can be used, but in particular, calcium carbonate, silica, kaolin, carbon black, alumina, titanium oxide, zinc white, miryoku,
Graphite and the like have desirable properties. That is, it is an inorganic powder that has little influence on the glass transition point of the viscoelastic vibration damping resin and does not adversely affect the vibration damping performance. By setting the particle size of the inorganic powder component used in the present invention to 1/3 or less of the thickness of the intermediate resin layer, it is possible to obtain adhesive strength higher than that obtained when using only the resin. If the particle size of the inorganic powder component used in the present invention exceeds 1/3 of the thickness of the intermediate resin layer, it is not preferable because the adhesive strength will decrease.

例えば、後述の実施例において、中間樹脂層厚が0.0
5mmの場合では、粒怪14ミクロンの炭酸カルシウム
迄は本発明の効果は認められるが,粒径17ミクロンの
シリカ、21ミクロンのカオリン、90ミクロンの炭酸
カルシウムは本発明の効果が認められない。また添加す
る無機粉末成分として炭酸カルシウムを樹脂組成物全体
の1〜70重量%、より好ましくは1〜60重量%添加
することにより、制振性能を低下させることなく接着強
度を大幅に向上させることが可能となる。尚、この場合
、粒径の細かい粒子ほど多量に添加可能である。添加量
が樹脂組成物全体の70重量%を越えると常温での制振
性能、及び接着性能が著しく低下するので好ましくない
。同様にシリカ及びカオリンを添加した場合添加量が1
〜30重量%、より好ましくは1〜20重量%の範囲に
おいて制振性能を低下させることなく接着強度を大幅に
向上させることが可能となる。添加量が30重量%を越
えると常温での接着性能が著しく低下するので好ましく
ない。以下、実施例により、本発明について詳細に説明
する。
For example, in the examples described below, the intermediate resin layer thickness is 0.0
In the case of 5 mm, the effect of the present invention is observed for calcium carbonate with a particle size of 14 microns, but the effect of the present invention is not observed for silica with a particle size of 17 microns, kaolin with a particle size of 21 microns, and calcium carbonate with a particle size of 90 microns. Furthermore, by adding calcium carbonate as an inorganic powder component of 1 to 70% by weight, more preferably 1 to 60% by weight of the entire resin composition, adhesive strength can be significantly improved without reducing vibration damping performance. becomes possible. In this case, the finer the particle size, the larger the amount can be added. If the amount added exceeds 70% by weight of the entire resin composition, vibration damping performance and adhesive performance at room temperature will deteriorate significantly, which is not preferable. Similarly, when adding silica and kaolin, the amount added is 1
In the range of ~30% by weight, more preferably 1~20% by weight, it becomes possible to significantly improve the adhesive strength without reducing vibration damping performance. If the amount added exceeds 30% by weight, the adhesive performance at room temperature will drop significantly, which is not preferable. Hereinafter, the present invention will be explained in detail with reference to Examples.

(実施例) エボキシ架橋のポリエステル樹脂を基本樹脂とし、これ
に無材粉末成分として第1表に示す成分を加え、本発明
の粘弾性制振樹脂組成物を作或した。
(Example) A viscoelastic damping resin composition of the present invention was prepared by using an epoxy-crosslinked polyester resin as a basic resin and adding the components shown in Table 1 as inorganic powder components.

作或した粘弾性樹脂組成物を0.8nua厚のリン酸塩
処理鋼板2枚の間に0 . 05mm厚ではさみ込み複
合型制振金属板を作成し、その剪断接着強度をJISK
 6850に準じて測定した。又、制振性能は振動周波
数5001+zにおける損失係数を求めた。
The prepared viscoelastic resin composition was placed between two phosphate-treated steel plates of 0.8 nua thickness. A sandwiched composite vibration damping metal plate with a thickness of 0.05 mm was created, and its shear adhesive strength was determined by JISK.
Measured according to 6850. Furthermore, the damping performance was determined by determining the loss coefficient at a vibration frequency of 5001+z.

実施例1.,2,3.4は、粒径1.4ミクロンの炭酸
カルシウムを加えたサンプルである。無機粉末成分を加
えていない比較例1のサンプルと比べ、剪断接着強度の
増加が認められる。又,制振性能は常温付近における損
失係数で0.1以上であり、高い性能を保っている.同
様に、実施例5,6は粒径14ミクロンの炭酸カルシウ
ムを加えたサンプル、実施例7,8は粒径2,6ミクロ
ンのシリカを加えたサンプル、実施例9,10は粒径2
.5ミクロンのカオリンを加えたサンプルであり、無機
粉末成分を加えていない比較例1のサンプルと比べ、剪
断接着強度の増加が認められる。比較例2,3,4,5
,6,7.8は無機粉末成分を過剰に加えたサンプル、
及び粒径が中間樹脂層厚の1/3を越えた無機粉末成分
を加えたサンプルであり、リグ断接着強度が極めて低く
なっている。又、制振性能も0.1に満たないサンプル
も認められる。
Example 1. , 2, 3.4 are samples to which calcium carbonate with a particle size of 1.4 microns was added. An increase in shear adhesive strength was observed compared to the sample of Comparative Example 1 to which no inorganic powder component was added. In addition, the vibration damping performance maintains high performance, with a loss coefficient of 0.1 or higher near room temperature. Similarly, Examples 5 and 6 are samples containing calcium carbonate having a particle size of 14 microns, Examples 7 and 8 are samples containing silica having a particle size of 2 and 6 microns, and Examples 9 and 10 are samples containing silica having a particle size of 2 microns.
.. This is a sample to which 5 microns of kaolin was added, and an increase in shear adhesive strength was observed compared to the sample of Comparative Example 1 to which no inorganic powder component was added. Comparative examples 2, 3, 4, 5
, 6, 7.8 are samples with excess inorganic powder components added,
This is a sample in which an inorganic powder component with a particle size exceeding 1/3 of the thickness of the intermediate resin layer is added, and the rig breaking adhesive strength is extremely low. In addition, some samples with damping performance of less than 0.1 were also observed.

(発明の効果) 本発明による制振材料用粘弾性樹脂Mi戊物を用いて作
成した複合型制振金属板は,無機粉末成分を含まない粘
弾性樹脂組成物を用いて作或した複合制振金属板に比べ
、常温における接着強度が高く、かつ、制振性能も高度
に保つことができ、本発明による粘弾性制振樹脂組成物
は、極めて有効な樹脂である。
(Effects of the Invention) A composite damping metal plate made using a viscoelastic resin Mi mold for vibration damping materials according to the present invention is a composite damping metal plate made using a viscoelastic resin composition containing no inorganic powder component. The viscoelastic vibration damping resin composition according to the present invention is an extremely effective resin because it has higher adhesive strength at room temperature than a vibrating metal plate and can maintain high vibration damping performance.

Claims (4)

【特許請求の範囲】[Claims] (1)粘弾性制振樹脂中に平均粒径が樹脂層厚の1/3
以下である無機粉末成分を加えたことを特徴とする制振
材料用粘弾性樹脂組成物。
(1) The average particle size in the viscoelastic damping resin is 1/3 of the resin layer thickness.
A viscoelastic resin composition for vibration damping material, characterized in that it contains the following inorganic powder component.
(2)無機粉末成分として、炭酸カルシウムを樹脂組成
物全体の1〜70重量%添加したことを特徴とする特許
請求の範囲第1項記載の制振材料用粘弾性樹脂組成物。
(2) A viscoelastic resin composition for a vibration damping material according to claim 1, wherein calcium carbonate is added as an inorganic powder component in an amount of 1 to 70% by weight based on the entire resin composition.
(3)無機粉末成分として、シリカを樹脂組成物全体の
1〜30重量%添加したことを特徴とする特許請求の範
囲第1項記載の制振材料用粘弾性樹脂組成物。
(3) A viscoelastic resin composition for a vibration damping material according to claim 1, characterized in that silica is added as an inorganic powder component in an amount of 1 to 30% by weight based on the entire resin composition.
(4)無機粉末成分として、カオリンを樹脂組成物全体
の1〜30重量%添加したことを特徴とする特許請求の
範囲第1項記載の制振材料用粘弾性樹脂組成物。
(4) A viscoelastic resin composition for a vibration damping material according to claim 1, wherein kaolin is added as an inorganic powder component in an amount of 1 to 30% by weight based on the entire resin composition.
JP18878789A 1989-07-24 1989-07-24 Viscoelastic resin composition for vibration-damping material Pending JPH0354261A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18878789A JPH0354261A (en) 1989-07-24 1989-07-24 Viscoelastic resin composition for vibration-damping material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18878789A JPH0354261A (en) 1989-07-24 1989-07-24 Viscoelastic resin composition for vibration-damping material

Publications (1)

Publication Number Publication Date
JPH0354261A true JPH0354261A (en) 1991-03-08

Family

ID=16229788

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18878789A Pending JPH0354261A (en) 1989-07-24 1989-07-24 Viscoelastic resin composition for vibration-damping material

Country Status (1)

Country Link
JP (1) JPH0354261A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8302754B2 (en) 2009-02-12 2012-11-06 Mitsubishi Heavy Industries, Ltd. Tapered coupling structure and rotating machine
US8915666B2 (en) 2010-02-18 2014-12-23 Mitsubishi Heavy Industries, Ltd. Taper coupling structure and rotating machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8302754B2 (en) 2009-02-12 2012-11-06 Mitsubishi Heavy Industries, Ltd. Tapered coupling structure and rotating machine
US8915666B2 (en) 2010-02-18 2014-12-23 Mitsubishi Heavy Industries, Ltd. Taper coupling structure and rotating machine

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