JPH02161500A - Lead fiber vibration-damping material - Google Patents
Lead fiber vibration-damping materialInfo
- Publication number
- JPH02161500A JPH02161500A JP63317326A JP31732688A JPH02161500A JP H02161500 A JPH02161500 A JP H02161500A JP 63317326 A JP63317326 A JP 63317326A JP 31732688 A JP31732688 A JP 31732688A JP H02161500 A JPH02161500 A JP H02161500A
- Authority
- JP
- Japan
- Prior art keywords
- lead
- plate body
- plate
- damping material
- lead fiber
- 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
- 239000000835 fiber Substances 0.000 title claims abstract description 32
- 239000000463 material Substances 0.000 title claims abstract description 26
- 238000013016 damping Methods 0.000 title claims abstract description 25
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000000748 compression moulding Methods 0.000 abstract description 6
- 238000010030 laminating Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 8
- 230000014759 maintenance of location Effects 0.000 description 6
- 238000000465 moulding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910001060 Gray iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Vibration Prevention Devices (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、制振性能がすぐれしかも低重量の鉛繊維制振
材に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a lead fiber vibration damping material that has excellent vibration damping performance and is lightweight.
〈従来の技術〉
たとえばオーディオ機器やピアノなどの大型楽器を載置
するための下敷きに用いる制振材料としては、従来から
ねずみ銑鉄の屑を圧縮積層した板状体やコンクリートブ
ロックなどが用いられてきたが、最近ではそれ自身が制
振性能を有する鉛が注目され、適宜な厚さおよび大きさ
に形成した鉛板状体や鉛インゴットが使用されている。<Conventional technology> For example, plates made of compacted layers of gray pig iron scraps or concrete blocks have been used as vibration-damping materials for the underlay on which audio equipment and large musical instruments such as pianos are placed. However, recently, lead itself has attracted attention as it has vibration damping properties, and lead plates and lead ingots formed to appropriate thickness and size are being used.
〈発明が解決しようとする課題〉
しかしながら、鉛板状体＋鉛インゴットからなる制振材
は、鉛に固有の損失係数を利用しているため、いまだに
制振性能に改良の余地があり、しかも鉛自体の比重が高
いなめに、高重量で取扱が困難であるという問題があっ
た、
そこで本発明の課題は、上記鉛板状体からなる制振材が
有する問題点を解決することにある。<Problem to be solved by the invention> However, since the damping material made of lead plate + lead ingot utilizes the loss coefficient specific to lead, there is still room for improvement in damping performance. Due to the high specific gravity of lead itself, there was a problem in that it was heavy and difficult to handle.Therefore, the object of the present invention is to solve the problems of vibration damping materials made of lead plate-like bodies. .
したがって本発明は、制振性能がすぐれ、しかも低重量
の鉛繊維制振材を提供することを目的とするものである
。Therefore, an object of the present invention is to provide a lead fiber damping material that has excellent damping performance and is low in weight.
く課題を解決するための手段〉
本発明者らは、上記目的を解決するために鋭意検討した
結果、特定の空隙率を有する鉛繊維積層体がきわめて高
い損失係数を有し、しかも釦自体からなる板状体に比し
低重量化が図られたものであり、制振材料として理想的
な性能を有することを見出し、本発明に到達した。Means for Solving the Problems> As a result of intensive studies to solve the above objects, the present inventors found that a lead fiber laminate with a specific porosity has an extremely high loss coefficient, and that It has been found that the material is lighter in weight than a plate-like material, and has ideal performance as a vibration damping material, and the present invention has been achieved.
すなわち本発明は、鉛繊維積層体を圧縮成型してなる、
空隙率が２０〜５０％の板状体からなることを特徴とす
る鉛繊維制振材を提供するものである。That is, the present invention is made by compression molding a lead fiber laminate.
The present invention provides a lead fiber damping material characterized by being made of a plate-like material having a porosity of 20 to 50%.
本発明で使用する鉛繊維積層体とは、一般に防音材など
の用途で使用されているもののように、多数の鉛繊維を
からませながら積層し、比較的低い圧力下に厚みを均等
化したものであり、通常その空隙率が７０〜７５％程度
のものである。The lead fiber laminate used in the present invention is one in which a large number of lead fibers are entangled and laminated to equalize the thickness under relatively low pressure, such as those generally used in soundproofing materials. The porosity is usually about 70 to 75%.
ここで、鉛繊維積層体を構成する鉛繊維の直径にはとく
に制限はないが、一般には２０μ以上の範囲が好適であ
る。Here, there is no particular restriction on the diameter of the lead fibers constituting the lead fiber laminate, but a range of 20 μm or more is generally suitable.
また、鉛繊維積層体を構成する鉛繊維はできるだけ高純
度のものまたは錫を配合した軟鉛タイプが好適であり、
硬鉛タイプについては賦型性の面で好ましくない。In addition, it is preferable that the lead fibers constituting the lead fiber laminate be of the highest possible purity or of soft lead type mixed with tin.
The hard lead type is not preferred in terms of moldability.
なお、鉛繊維積層体は、これを空隙率が２０〜５０％と
なるように圧縮成型して、得られる板状体の厚みが３．
０ｗ以上となるのに十分な厚みを有していることが必要
である。The lead fiber laminate is compression molded to have a porosity of 20 to 50%, and the thickness of the plate-like body obtained is 3.5%.
It is necessary to have a sufficient thickness to achieve 0w or more.
本発明の制振材は、上記鉛繊維積層体を圧縮成型するこ
とにより得られるが、圧縮成形法としては、通常のプレ
ス成型および熱プレス成型などが使用される。The damping material of the present invention can be obtained by compression molding the lead fiber laminate, and as the compression molding method, ordinary press molding, hot press molding, etc. are used.
圧縮成型にあたっては、得られる板状体の空隙率が２０
〜５０％で、しかも板状体の厚みが３４０市以上の範囲
になるようにその成型条件を選択すべきである。During compression molding, the porosity of the plate-shaped body obtained is 20.
-50%, and the molding conditions should be selected so that the thickness of the plate-like body is in the range of 340 mm or more.
なお、本発明における板状体の空隙率とは、次式により
求められる値である。In addition, the porosity of the plate-shaped body in this invention is the value calculated|required by the following formula.
［（鉛の密度−鉛繊維積層体の密度）／鉛の密度］Ｘ１
００
ここで、板状体の空隙率が２０％未満では、板状体の損
失係数が鉛板そのものの損失係数に近くなって、十分な
制振性能が発揮し得す、５０％を越えると、板状体の形
態保持性が低下し、ソリや変形を生じやすくなるため好
ましくない。[(density of lead - density of lead fiber laminate)/density of lead]X1
00 Here, when the porosity of the plate is less than 20%, the loss coefficient of the plate becomes close to the loss coefficient of the lead plate itself, and sufficient vibration damping performance can be exhibited; when it exceeds 50%, This is not preferable because the shape retention of the plate-like body is reduced and warpage and deformation are more likely to occur.
また、板状体の厚みが３．０−未満では、とくに高！Ｊ
ｉの物体を載１する場合にソリや変形を生じやすく、形
態保持性を十分に満足することができないばかりか、取
扱時にも変形を起こしやすく、しかもこの変形によって
割振性能も阻害されるため好ましくない。Moreover, when the thickness of the plate-shaped body is less than 3.0, the thickness is particularly high! J
It is preferable because it tends to warp or deform when the object i is placed on it, making it impossible to fully satisfy shape retention, and also easily deforming when handled, and furthermore, this deformation impairs the allocation performance. do not have.
このようにして鉛繊維積層体を圧縮成型してなる空隙率
が２０〜５０％の板状体を、適当な大きさに切断するこ
とにより、本発明の鉛繊維制振材がえられるが、この鉛
繊維制振材につぎのような加工処理を施すことにより、
さらに高機能化を図ることができる。The lead fiber damping material of the present invention can be obtained by cutting the plate-shaped body having a porosity of 20 to 50%, which is formed by compression molding the lead fiber laminate into an appropriate size. By applying the following processing to this lead fiber damping material,
Furthermore, higher functionality can be achieved.
すなわち、鉛板状体の表面に、たとえば合成樹脂塗料な
どの表面被覆材をスプレー塗布などの手段で塗布すれば
、錆止め、表面強度の向上およびファツション性改良な
どの諸効果を得ることができる。That is, if a surface coating material such as a synthetic resin paint is applied to the surface of a lead plate by means of spray coating or the like, various effects such as rust prevention, improvement in surface strength, and improvement in fashionability can be obtained.
また、鉛板状体の側面をグラスチックや木製の板で囲う
ことにより、側面の補強およびファツション性の改良な
どを図ることができる。Furthermore, by surrounding the side surfaces of the lead plate-like body with glass or wooden boards, it is possible to strengthen the side surfaces and improve fashionability.
以上の構成からなる本発明の鉛繊維制振材は、その損失
係数が高くてすぐれた防振性能を有し、しかも空隙を設
けたことにより低重量化され、取り汲いやすいという利
点を有するものである。The lead fiber vibration damping material of the present invention having the above structure has a high loss coefficient and excellent vibration damping performance, and has the advantage of being lightweight due to the provision of voids and being easy to collect. It is something.
これは外部からの振動に対して、鉛単繊維の１本、１本
がＩＲ細に振動することおよび鉛短繊維同志の接点部が
振動時に牽擦することなどにより、外部からの振動エネ
ルギーが吸収されるなめに、鉛板単体の場合よりも損失
係数が高くなることに基因するものと考えられる。This is due to the fact that each single lead fiber vibrates minutely in IR in response to external vibrations, and the contact parts of short lead fibers rub against each other when vibrating. This is thought to be due to the fact that the loss coefficient is higher than that of the lead plate alone due to the absorption.
〈実施例〉
以下に実施例および比較例により、本発明の効果をさら
に説明する。<Example> The effects of the present invention will be further explained below with reference to Examples and Comparative Examples.
（実施例１〜４および比較例１〜４）
直径１６０μ、長さ１５０＋ｕ＋の鉛繊維からなり、種
々の厚みを有する積層体を、プレス成型機に供し、各々
厚みが１０．０ｍａで、表１に示した空隙率を有する鉛
板状体を成型した。(Examples 1 to 4 and Comparative Examples 1 to 4) Laminated bodies made of lead fibers having a diameter of 160μ and a length of 150+u+ and having various thicknesses were subjected to a press molding machine, and each had a thickness of 10.0ma.Table 1 A lead plate-like body having a porosity shown in was molded.
各板状体について、打撃法［米軍規格・・・ＭＩＬ−Ｐ
−２２５８１−Ｂ （ＳＨＩＯ３）］ ）による損失係
数を測定すると共に、次の基準によって形態保持性の評
価を行った。For each plate-shaped body, the impact method [US military standard...MIL-P]
-22581-B (SHIO3)]) was measured, and shape retention was evaluated according to the following criteria.
２０（４１１四方の板状体の中央５ｃｌＩ四方に、１０
０ｋｇの荷重を１０時間与えた後の状態を肉眼にて観察
した。20 (10 in the center 5clI square of the 411 square plate)
The state after applying a load of 0 kg for 10 hours was observed with the naked eye.
○・・・・・・変形をまったく生じない。○: No deformation occurs at all.
Δ・・・・・・やや凹みを生ずる。Δ: Slight depression occurs.
×・・・・・・著しい凹みを生ずる。×...A significant dent is produced.
また、比較のために、厚み１０．０ｍの鉛板状体（比較
例１）およびねずみ鋳鉄板状体（比較例４）についても
同機の評価を行った。For comparison, the same machine was also evaluated for a lead plate (Comparative Example 1) and a gray cast iron plate (Comparative Example 4) with a thickness of 10.0 m.
これらの結果を表１に併せて示す。These results are also shown in Table 1.
（以下本頁余白）
表
上記衣の結果から明らかなように、本発明の鉛繊維制振
材は、従来の鉛板状体（比較例１）や、ねずみ鋳鉄板状
体（比較例４）に比較して、その損失係数が高くてすぐ
れた防振性能を有し、しかも空隙を設けたことにより低
重量化され、取扱いやすいばかりか、形態保持性にもす
ぐれている。(Hereinafter, the margin of this page) As is clear from the results above, the lead fiber vibration damping material of the present invention can be used in conventional lead plate-like bodies (Comparative Example 1) and gray cast iron plate-like bodies (Comparative Example 4). Compared to the above, it has a high loss coefficient and excellent vibration-damping performance, and is lightweight due to the provision of voids, making it easy to handle and has excellent shape retention.
しかし、鉛繊維積層体からなる板状体であっても、その
空隙率が２０％未満（比較例２）では損失係数が改良さ
れず、逆に空隙率が５０％を越える（比較例３）と、形
態保持性が阻害されるため好ましくない。However, even with a plate-like body made of a lead fiber laminate, the loss coefficient cannot be improved if the porosity is less than 20% (Comparative Example 2), and on the contrary, if the porosity exceeds 50% (Comparative Example 3) This is not preferable because shape retention is inhibited.
〈発明の効果〉
以上説明したように、本発明の鉛繊維制振材は、きわめ
て高い損失係数およびすぐれた形態保持性を有し、しか
も鉛白体からなる板状体に比し低重量化が図られたもの
であり、オーディオ機器やピアノなどの大型楽器などを
ａ置するための下敷きに用いる制振材料として、理想的
な性能を有している。<Effects of the Invention> As explained above, the lead fiber damping material of the present invention has an extremely high loss coefficient and excellent shape retention, and is also lighter in weight than a plate-like material made of lead white material. It has ideal performance as a vibration damping material used as a base for placing audio equipment and large musical instruments such as pianos.
Claims (2)
〜５０％の板状体からなることを特徴とする鉛繊維制振
材。(1) Compression molded lead fiber laminate, porosity is 20
A lead fiber damping material characterized by comprising ~50% plate-like material.
とする請求項（１）に記載の鉛繊維制振材。(2) The lead fiber damping material according to claim (1), wherein the plate-like body has a thickness of 3.0 mm or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63317326A JPH02161500A (en) | 1988-12-15 | 1988-12-15 | Lead fiber vibration-damping material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63317326A JPH02161500A (en) | 1988-12-15 | 1988-12-15 | Lead fiber vibration-damping material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02161500A true JPH02161500A (en) | 1990-06-21 |
Family
ID=18086961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63317326A Pending JPH02161500A (en) | 1988-12-15 | 1988-12-15 | Lead fiber vibration-damping material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02161500A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006106405A (en) * | 2004-10-06 | 2006-04-20 | Ee R:Kk | Sound absorbing material, and method and device for manufacturing sound absorbing material |
-
1988
- 1988-12-15 JP JP63317326A patent/JPH02161500A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006106405A (en) * | 2004-10-06 | 2006-04-20 | Ee R:Kk | Sound absorbing material, and method and device for manufacturing sound absorbing material |
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