JPS63103299A - Metal sound absorbing material - Google Patents
Metal sound absorbing materialInfo
- Publication number
- JPS63103299A JPS63103299A JP61249267A JP24926786A JPS63103299A JP S63103299 A JPS63103299 A JP S63103299A JP 61249267 A JP61249267 A JP 61249267A JP 24926786 A JP24926786 A JP 24926786A JP S63103299 A JPS63103299 A JP S63103299A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- absorbing material
- sound absorbing
- sound
- fibers
- 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.)
- Granted
Links
- 229910052751 metal Inorganic materials 0.000 title claims description 28
- 239000002184 metal Substances 0.000 title claims description 28
- 239000011358 absorbing material Substances 0.000 title claims description 20
- 239000000835 fiber Substances 0.000 claims description 22
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000005245 sintering Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000011491 glass wool Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
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) [Abstract] 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）
本発明は道路用防音壁、自動車用マフラー、工場用防音
材、スタジオの吸音板等の広範な用途に用いることがで
きる金属吸音材に関するものである。[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a metal sound-absorbing material that can be used in a wide range of applications such as sound-proof walls for roads, mufflers for automobiles, sound-proof materials for factories, sound-absorbing boards for studios, etc. It is.
（従来の技術）
従来の吸音材として代表的なものは、グラスウール等の
繊維質をフェルト状に成形したものであるが、強度が小
さいこと、使用中に繊維が飛散するため耐久性に乏しい
こと、コストが嵩むこと等の欠点があるほか、屋外で使
用中に雨水等により漏れて繊維が保水すると吸音性能が
著しく低下し、乾燥に長時間を要するために吸音性能の
回復が極めて遅いという欠点があった。またこのほが金
属粉末、セラミック粉末、金属短繊維等を焼結した多孔
質の吸音材も広く用いられているが、焼結を必要とする
ので１枚当りの寸法に制限があること、焼結コストが高
く安価に製造できないこと、施工時に曲げ加工ができな
いこと等の欠点があるほか、やはり吸水した場合の吸音
性能の回復が遅いという欠点があった。(Conventional technology) A typical conventional sound absorbing material is made of fibers such as glass wool molded into a felt shape, but it has low strength and lacks durability because the fibers scatter during use. In addition to disadvantages such as increased cost, the sound absorption performance decreases significantly if the fibers retain water due to rainwater leakage during outdoor use, and recovery of sound absorption performance is extremely slow due to the long time it takes to dry. was there. In addition, porous sound absorbing materials made by sintering metal powder, ceramic powder, short metal fibers, etc. are also widely used, but because they require sintering, there are restrictions on the size of each sheet, and In addition to drawbacks such as high cost and inability to manufacture at low cost, and inability to bend during construction, there was also the drawback that sound absorption performance was slow to recover when water was absorbed.
（発明が解決しようとする問題点）
本発明は上記したような従来の問題点を解決し、強度、
耐久性、可撓性に優れるうえ、大型の吸音材をも低コス
トで製作することができ、しかも吸水した場合にも吸音
性能を速やかに回復することができる金属吸音材を「１
的として完成されたものである。(Problems to be solved by the invention) The present invention solves the above-mentioned conventional problems, and improves strength and
We have developed a metal sound absorbing material that has excellent durability and flexibility, can be produced at low cost even in large sizes, and can quickly recover its sound absorbing performance even if it absorbs water.
It has been completed as a target.
（問題点を解決するための手段）
本発明はアルミニウム繊維等の金属繊維の積重体を金網
によりサンドイッチ状に挟んで圧着成形し、流れ抵抗値
を１００〜１５００ Ｎ −Ｓ／ｍ３としたことを特徴
とするものである。(Means for Solving the Problems) The present invention is characterized in that a stack of metal fibers such as aluminum fibers is sandwiched between wire meshes and pressure-molded to have a flow resistance value of 100 to 1500 N-S/m3. This is a characteristic feature.
本発明において用いられる金属繊維はアルミニウム、ス
テンレス鋼のような耐食性に優れた材質からなるもので
、後述する流れ抵抗値を１００〜１５０ＯＮ−８／１１
１３とするためにも、繊維径を２５〜１００ μｍ、繊
維長を１０１以上とすることが好ましい。このような金
属繊維は第１図に示すように面密度が５００〜６０００
ｇ／ ｍのフェルト状の積重体（１）とされている。ま
たその外側をサンドイッチ状に挟む金網（２）は目開き
が１〜５龍、線径０．３〜１．０ 冨ｌ、厚さ０．４〜
１■譜、開口率３０〜９０％程度のものであり、図示の
ように金属繊維と同材質のエキスバンドメタルを用いる
こともできる。このような金ＷＩ（２１によって金属繊
維の積重体（１）は両側からサンドイッチ状に挟まれて
圧着成形され、厚さが０．５〜１０鶴、気孔率が５０〜
９０％であってその流れ抵抗値が１００〜１５００ Ｎ
−Ｓ／ｍ”の金属吸音材とされる。流れ抵抗値は後の
実施例のデータにも示すように吸音性能に大きく影響す
る物性値であり、本発明のような金属吸音材にあっては
１００Ｎ−８／ｍ″未満では音波が容易に貫通ずるため
に吸音性能が全周波数域にわたって低下し、また１５０
０ Ｎ −Ｓ／ｍ３を越えると音波の反射率が増加して
特に３００〜２０００ Ｈｚの中間周波数帯域における
吸音性能が低下する。このため本発明においては流れ抵
抗値を１００〜１５００ Ｎ・Ｓ／ｍ’としたもので、
この値のコントロールは繊維径、金網（２）の目開き等
を変えるほか、表面に無機接着剤、有機接着剤等を塗布
したり、含浸させたりすることによっても行うことがで
きる。なお、金網（２）と積重体（１）との間の剥離強
度を高めるために、第１図に示すように１０〜３Ｑｍｍ
ピッチで強圧着部（３）を設けておくことが好ましい。The metal fiber used in the present invention is made of a material with excellent corrosion resistance such as aluminum or stainless steel, and has a flow resistance value of 100 to 150ON-8/11, which will be described later.
13, it is preferable that the fiber diameter be 25 to 100 μm and the fiber length be 101 or more. As shown in Figure 1, these metal fibers have an areal density of 500 to 6000.
g/m felt-like stack (1). The wire mesh (2) sandwiching the outside has a mesh size of 1 to 5 mm, a wire diameter of 0.3 to 1.0 liters, and a thickness of 0.4 to 5 liters.
It has an opening ratio of about 30 to 90%, and as shown in the figure, expanded metal made of the same material as the metal fiber can also be used. A stack of metal fibers (1) is sandwiched from both sides and pressure-molded using such gold WI (21), and has a thickness of 0.5 to 10 mm and a porosity of 50 to 50 mm.
90% and its flow resistance value is 100 to 1500 N
-S/m”.The flow resistance value is a physical property value that greatly affects sound absorption performance, as shown in the data of the later examples, and in the metal sound absorption material like the present invention. If it is less than 100 N-8/m'', the sound absorption performance will decrease over the entire frequency range because the sound waves will easily penetrate.
When it exceeds 0 N -S/m3, the reflectance of sound waves increases and the sound absorption performance particularly in the intermediate frequency band of 300 to 2000 Hz deteriorates. Therefore, in the present invention, the flow resistance value is set to 100 to 1500 N・S/m'.
This value can be controlled not only by changing the fiber diameter and the opening of the wire mesh (2), but also by coating or impregnating the surface with an inorganic adhesive, an organic adhesive, etc. In addition, in order to increase the peel strength between the wire mesh (2) and the stack (1), the peel strength is 10 to 3 Qmm as shown in Fig. 1.
It is preferable to provide strong pressure bonding portions (3) at pitches.
（実施例）
繊維径２５〜１００ μｍ１繊維長１０〜１００■程度
のアルミニウム繊維を圧縮前の厚さが７ｎ＋、面密度が
１１００ｇ／ｍ”となるように積層し、その両面を目開
き２Ｎ、線径０．５ｔｍ、厚さ０．５ ｗｍ、開口率８
０％のアルミニウム製のエキスバンドメタルにより挾ん
でローラーで圧着し、全体の厚さが２．０ｍｍで流れ抵
抗値が６４０ Ｎ・Ｓ／ｍ″の金属吸音材を（３だ。(Example) Aluminum fibers with a fiber diameter of 25 to 100 μm and a fiber length of about 10 to 100 μm were laminated so that the thickness before compression was 7n+ and the areal density was 1100 g/m'', and the openings on both sides were 2N, Wire diameter 0.5tm, thickness 0.5wm, aperture ratio 8
A metal sound-absorbing material with a total thickness of 2.0 mm and a flow resistance value of 640 N・S/m'' was sandwiched between 0% aluminum expanded metals and crimped with rollers (3).
この金属吸音材の表面には２０ｍピッチで強圧着部を形
成した。得られた金属吸音材を直径１００寵の円板状に
切断し、ＪＩＳ Ａ１４０５ ｒ管内法による垂直入
射吸音率測定法」に規定される方法に従って背後空気層
を８００としたときの垂直入射吸音率を測定したところ
、第２図のグラフ中に■として示す結果が得られた。ま
たこれと同時に面密度を変えて流れ抵抗値がそれぞれ５
０．１２０．９８０．１５００．１９５ＯＮ−３／ｌ１
１３の試験片を作成し、それぞれについて同一方法で垂
直入射吸音率を測定した結果を第２図中に■、■、■、
■、■とじて記入した。このグラフからも明らかなよう
に、流れ抵抗値が１００〜１５００ Ｎ・Ｓ／ｍ３の範
囲内にある本発明の金属吸音材は広い周波数域にわたり
優れた吸音特性を示すことがわかる。Strong pressure bonding portions were formed on the surface of this metal sound absorbing material at a pitch of 20 m. The obtained metal sound absorbing material is cut into a disk shape with a diameter of 100cm, and the normal incidence sound absorption coefficient is determined when the back air layer is set to 800mm according to the method specified in "JIS A1405 r Normal incidence sound absorption coefficient measurement method by in-pipe method" As a result of measurement, results shown as ■ in the graph of FIG. 2 were obtained. At the same time, the areal density was changed and the flow resistance value was 5.
0.120.980.1500.195ON-3/l1
Thirteen test pieces were prepared and the normal incidence sound absorption coefficient was measured using the same method for each. The results are shown in Figure 2 as ■, ■, ■,
I filled it out with ■ and ■. As is clear from this graph, it can be seen that the metal sound absorbing material of the present invention having a flow resistance value within the range of 100 to 1500 N·S/m3 exhibits excellent sound absorbing properties over a wide frequency range.
次に本発明の金属吸音材の含水後における吸音性能の回
復状態を測定するため、上記と同様にして厚さ３．０籠
、流れ抵抗値が１０００ Ｎ −Ｓ／＋ｎ３の金属吸音
材を作成し、乾燥時と、浸水後５時間経過後の垂直入射
吸音率（背後空気層５０ｎ）をＪＩＳ Ａ１４０５の方
法で測定した。この結果は第３図のグラフに・印及び△
印で示すとおりである。一方これと対比するために厚さ
５０龍のグラスウール製の吸音材について同様の測定を
行ったところ、第３図のグラフに○印で示すように乾燥
時には本発明品と同様の吸音特性を示したが、浸水後８
０時間を経過した後もなおＸ印で示すように吸音特性は
極めて低いレベルまで低下したままであった。このよう
に本発明の金属吸音材は含水しに＜＜、また含水後の吸
音性能も速やかなものであった。Next, in order to measure the state of recovery of the sound absorption performance of the metal sound absorbing material of the present invention after it was hydrated, a metal sound absorbing material with a thickness of 3.0 cages and a flow resistance value of 1000 N -S/+n3 was created in the same manner as above. Then, the normal incidence sound absorption coefficient (back air layer 50n) when dry and after 5 hours had passed after immersion in water was measured using the method of JIS A1405. This result is shown in the graph of Figure 3 with ・ and △.
As shown by the marks. On the other hand, in order to compare with this, similar measurements were carried out on a sound absorbing material made of glass wool with a thickness of 50 mm, and as shown by the circle in the graph of Figure 3, it exhibited sound absorbing properties similar to those of the product of the present invention when dry. However, after flooding
Even after 0 hours had elapsed, the sound absorption properties remained reduced to an extremely low level as indicated by the X mark. As described above, the metal sound absorbing material of the present invention did not absorb water quickly, and its sound absorption performance after absorbing water was also quick.
（発明の効果）
本発明は以上の説明からも明らかなように、幅広い周波
数域にわたって優れた吸音特性を有し、また含水しに＜
＜、含水してもすぐに乾燥して吸音特性を速やかに回復
することができるものであるから、特に道路用防音壁の
ように屋外で使用される吸音材として好適なものである
。また本発明の金属吸音材は金属繊維の積重体を両側か
ら金網によりサンドイッチ状に挟んで圧着成形したもの
であるから強度及び可撓性に優れるうえ、金網の作用に
より繊維が飛散するおそれもないので耐久性にも優れ、
更にまた焼結工程を必要としないので大型の製品をも低
コストで製造できるものである。よって本発明は道路用
防音壁のような屋外の用途や送風機のダクト内消音器の
ような繊維の飛散を嫌う用途等に特に有効な金属吸音材
として、産業の発展に寄与するところは極めて大きいも
のである。(Effects of the Invention) As is clear from the above description, the present invention has excellent sound absorption characteristics over a wide frequency range, and
Even if it contains water, it dries quickly and can quickly recover its sound absorbing properties, so it is particularly suitable as a sound absorbing material used outdoors, such as in soundproof walls for roads. In addition, the metal sound absorbing material of the present invention is made by crimp-molding a stack of metal fibers sandwiched between wire meshes on both sides, so it has excellent strength and flexibility, and there is no fear of the fibers scattering due to the action of the wire mesh. Therefore, it has excellent durability,
Furthermore, since no sintering process is required, large products can be manufactured at low cost. Therefore, the present invention will greatly contribute to the development of industry as a metal sound-absorbing material that is particularly effective for outdoor applications such as soundproof walls for roads, and applications where fibers should not be scattered, such as silencers in the ducts of blowers. It is something.
第１図は本発明の実施例を示す一部切欠斜視図、第２図
は種々の流れ抵抗値を持つ金属吸音材の垂直入射吸音率
のグラフ、第３図は本発明の金属吸音材と従来の吸音材
の乾燥時及び浸水後の垂直入射吸音率のグラフである。
（１）：金属繊維の積重体、（２）：金網。
第１図Fig. 1 is a partially cutaway perspective view showing an embodiment of the present invention, Fig. 2 is a graph of normal incidence sound absorption coefficients of metal sound absorbing materials with various flow resistance values, and Fig. 3 is a graph of the sound absorption coefficient of normal incidence of metal sound absorbing materials of the present invention. It is a graph of the normal incidence sound absorption coefficient of a conventional sound absorbing material when dry and after being immersed in water. (1): Stack of metal fibers, (2): wire mesh. Figure 1
Claims (1)
２）によりサンドイッチ状に挟んで圧着成形し、流れ抵
抗値を１００〜１５００Ｎ・Ｓ／ｍ＾３としたことを特
徴とする金属吸音材。A stack (1) of metal fibers such as aluminum fibers is placed in a wire mesh (
A metal sound absorbing material characterized by being sandwiched and pressure-molded according to 2) to have a flow resistance value of 100 to 1500 N·S/m^3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61249267A JPS63103299A (en) | 1986-10-20 | 1986-10-20 | Metal sound absorbing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61249267A JPS63103299A (en) | 1986-10-20 | 1986-10-20 | Metal sound absorbing material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63103299A true JPS63103299A (en) | 1988-05-07 |
| JPH0513517B2 JPH0513517B2 (en) | 1993-02-22 |
Family
ID=17190422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61249267A Granted JPS63103299A (en) | 1986-10-20 | 1986-10-20 | Metal sound absorbing material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63103299A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0387220U (en) * | 1989-12-25 | 1991-09-04 | ||
| JPH049898A (en) * | 1990-04-27 | 1992-01-14 | Nippon Tokushu Toryo Co Ltd | Sound insulator |
| CN105057676A (en) * | 2015-08-12 | 2015-11-18 | 广州橙行智动汽车科技有限公司 | Metal fiber porous material with surface net-shaped sintering coating structure and manufacturing method thereof |
| JP2016015691A (en) * | 2014-07-03 | 2016-01-28 | 株式会社オーディオテクニカ | Headphone and manufacturing method thereof |
| CN112192914A (en) * | 2020-10-13 | 2021-01-08 | 黄山市亿华装饰材料有限公司 | Mould-proof antibacterial flame-retardant composite wallpaper |
| KR20220111466A (en) | 2021-02-02 | 2022-08-09 | 유한책임회사 도시환경개발원 | Nonflammability sound absorption plate |
-
1986
- 1986-10-20 JP JP61249267A patent/JPS63103299A/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0387220U (en) * | 1989-12-25 | 1991-09-04 | ||
| JPH0628266Y2 (en) * | 1989-12-25 | 1994-08-03 | 株式会社ユニックス | Sound absorber |
| JPH049898A (en) * | 1990-04-27 | 1992-01-14 | Nippon Tokushu Toryo Co Ltd | Sound insulator |
| JP2016015691A (en) * | 2014-07-03 | 2016-01-28 | 株式会社オーディオテクニカ | Headphone and manufacturing method thereof |
| CN105057676A (en) * | 2015-08-12 | 2015-11-18 | 广州橙行智动汽车科技有限公司 | Metal fiber porous material with surface net-shaped sintering coating structure and manufacturing method thereof |
| CN112192914A (en) * | 2020-10-13 | 2021-01-08 | 黄山市亿华装饰材料有限公司 | Mould-proof antibacterial flame-retardant composite wallpaper |
| KR20220111466A (en) | 2021-02-02 | 2022-08-09 | 유한책임회사 도시환경개발원 | Nonflammability sound absorption plate |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0513517B2 (en) | 1993-02-22 |
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