JPH059758Y2 - - Google Patents
Info
- Publication number
- JPH059758Y2 JPH059758Y2 JP840886U JP840886U JPH059758Y2 JP H059758 Y2 JPH059758 Y2 JP H059758Y2 JP 840886 U JP840886 U JP 840886U JP 840886 U JP840886 U JP 840886U JP H059758 Y2 JPH059758 Y2 JP H059758Y2
- Authority
- JP
- Japan
- Prior art keywords
- absorbing material
- sound
- layer
- prevention layer
- sound absorbing
- 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.)
- Expired - Lifetime
Links
- 230000002265 prevention Effects 0.000 claims description 37
- 239000011358 absorbing material Substances 0.000 claims description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 230000010071 organism adhesion Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 11
- 230000035699 permeability Effects 0.000 claims description 5
- 229920001971 elastomer Polymers 0.000 description 9
- 229920001084 poly(chloroprene) Polymers 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 230000005012 migration Effects 0.000 description 4
- 238000013508 migration Methods 0.000 description 4
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 229920005556 chlorobutyl Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011151 fibre-reinforced plastic Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 229920001875 Ebonite Polymers 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000007227 biological adhesion Effects 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Description
【考案の詳細な説明】
〔考案の技術分野〕
本考案は、表面からの水の侵入を良好に防止し
た海中吸音材に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an underwater sound absorbing material that effectively prevents water from entering from the surface.
従来、海中における通信手段としては、通常、
音波が使用される。そこで、通信経路近傍に音波
反射物体があるとノイズの原因となるため、吸音
材をその反射物体に貼り付け、ノイズを防止して
いる。しかし、吸音材は、海中に存在するため、
海中生物が表面に付着し、これがノイズの原因と
もなる。
Traditionally, the means of underwater communication are usually
Sound waves are used. Therefore, since a sound wave reflecting object near the communication path causes noise, a sound absorbing material is attached to the reflecting object to prevent noise. However, since sound-absorbing materials exist underwater,
Marine organisms adhere to the surface, which also causes noise.
この海中生物の付着によるノイズを防止するた
めに、吸音材表面に海中生物付着防止材を貼り付
けることが行われている。この場合、吸音材、海
中生物付着防止材は、通常、共に素材としてゴム
を使用しているが、長期間海中に浸漬されている
とゴム中に透水し、しだいに吸音特性を低下させ
る恐れがあつた。 In order to prevent noise caused by the adhesion of marine organisms, a marine organism adhesion prevention material is pasted on the surface of the sound-absorbing material. In this case, the sound-absorbing material and the marine organism adhesion-preventing material are both usually made of rubber, but if they are immersed in the sea for a long period of time, there is a risk that water will permeate into the rubber and gradually reduce the sound-absorbing properties. It was hot.
本考案は、表面からの水の侵入を良好に防止で
きると共に海中生物付着防止の機能を永続せしめ
た海中吸音材を提供することを目的とする。
The object of the present invention is to provide an underwater sound-absorbing material that can effectively prevent water from entering from the surface and has a permanent function of preventing the adhesion of marine organisms.
このため、本考案は、吸音材層の上に海中生物
付着防止層を設けた海中吸音材において、前記吸
音材層と前記海中生物付着防止層との間に、水の
透過係数５×10-8（ｇ・hr-1・cm-1・mmHg-1）以
下の材料の透水防止層を配設したことを特徴とす
る海中吸音材を要旨とするものである。
For this reason, the present invention provides an underwater sound-absorbing material in which a marine organism adhesion prevention layer is provided on a sound-absorbing material layer, with a water permeability coefficient of 5×10 − between the sound-absorbing material layer and the marine organism adhesion prevention layer. 8 (g・hr -1・cm -1・mmHg -1 ) or less is an underwater sound absorbing material characterized by having a water permeation prevention layer provided therein.
以下、図を参照して本考案の構成について詳し
く説明する。 Hereinafter, the configuration of the present invention will be explained in detail with reference to the drawings.
第１図は、本考案の海中吸音材の一例の断面説
明図である。第１図において、１は海中生物付着
防止層、３は吸音材層であり、これらの海中生物
付着防止層１と吸音材層３との間に透水防止層２
が配設されている。これら３層は、接着もしくは
加熱、加圧等により一体化している。 FIG. 1 is an explanatory cross-sectional view of an example of the underwater sound absorbing material of the present invention. In FIG. 1, 1 is a marine organism adhesion prevention layer, 3 is a sound absorbing material layer, and a water permeation prevention layer 2 is provided between the marine organism adhesion prevention layer 1 and the sound absorbing material layer 3.
is installed. These three layers are integrated by adhesion, heating, pressure, or the like.
海中生物付着防止層１は、ゴム等の弾性母材に
生物付着防止薬を配合してなるもので、その薬材
が使用中に表面に徐々に移行して海水に溶出す
る。このため、海中に生存する微生物はこの防止
層１の表面を忌避するので、付着を防止すること
ができる。本薬剤は、表面に移行することにより
その効果を現わすものであるため、含有量の減少
につれて次第に防止効果の減少をきたすことにな
る。 The marine organism adhesion prevention layer 1 is made by blending a biological adhesion prevention agent into an elastic base material such as rubber, and the agent gradually migrates to the surface and dissolves into seawater during use. Therefore, since microorganisms living in the sea avoid the surface of this prevention layer 1, adhesion can be prevented. Since this drug exhibits its effect by migrating to the surface, the prevention effect gradually decreases as the content decreases.
透水防止層２は、水の透過係数５×10-8（ｇ・
hr-1・cm-1・mmHg-1）以下の材料からなるもの
である。この材料としては、例えば、塩素化ブチ
ルゴムであり、その他に硬質ゴム（エボナイト）、
多硫化ゴム、さらには塩化ビニル樹脂、エポキシ
樹脂、ポリエチレン等のプラスチツクス材料を用
いることができる。また、透水防止層２の厚さ
は、100μ以上であればよい。この透水防止層２
を設けることにより、吸音材層３への侵水を防止
し、長期間に亘つて吸音機能を保持させることが
できる。さらに、海中生物付着防止層１中の薬剤
の吸音材層３への移行を防ぎ、海中生物付着防止
層１の機能を長期化たらしむることができる。 The water permeation prevention layer 2 has a water permeability coefficient of 5×10 -8 (g・
hr -1・cm -1・mmHg -1 ) It is made of the following materials. Examples of this material include chlorinated butyl rubber, as well as hard rubber (ebonite),
Plastic materials such as polysulfide rubber, vinyl chloride resin, epoxy resin, and polyethylene can be used. Further, the thickness of the water permeation prevention layer 2 may be 100 μm or more. This water permeation prevention layer 2
By providing this, water can be prevented from entering the sound absorbing material layer 3, and the sound absorbing function can be maintained for a long period of time. Furthermore, it is possible to prevent the migration of chemicals in the marine organism adhesion prevention layer 1 to the sound absorbing material layer 3, and to prolong the function of the marine organism adhesion prevention layer 1.
吸音材層３は、１〜100KHz程度の音波の反射
防止・吸音を行うもので、ゴム等の粘弾性母材か
らできている。内部に独立空隙（気泡等）３１を
有しており、入射音波がこの独立空隙３１の近傍
にて運動エネルギーを熱エネルギーに変換するこ
とにより吸音する。長期間に亘り海中にて使用す
ると、通常のゴム材料は透水する。これにより侵
入した水は、独立空隙３１に次第に蓄積し、長期
的には吸音機能を損なう恐れがある。このため
に、海中生物付着防止層１と吸音材層３との間に
透水防止層２を設けて吸音材層３への透水を防止
している。 The sound absorbing material layer 3 prevents reflection and absorbs sound waves of about 1 to 100 KHz, and is made of a viscoelastic base material such as rubber. It has independent voids (such as air bubbles) 31 inside, and the incident sound wave is absorbed by converting kinetic energy into thermal energy in the vicinity of the independent voids 31. Ordinary rubber materials become water permeable when used underwater for long periods of time. The water that has entered as a result of this will gradually accumulate in the independent voids 31, which may impair the sound absorbing function in the long run. For this purpose, a water permeation prevention layer 2 is provided between the marine organism adhesion prevention layer 1 and the sound absorbing material layer 3 to prevent water from permeating into the sound absorbing material layer 3.
つぎに、本考案の海中吸音材の実施例を示す。 Next, examples of the underwater sound absorbing material of the present invention will be shown.
実施例
(1) クロロプレン系ゴム10mm厚の海中生物付着防
止層に、透水防止層として塩素化ブチルゴム
（水の透過係数１×10-8（ｇ・hr-1・cm-1・mm
Hg-1）程度）２mm厚、および吸音層ゴム（ク
ロロプレンゴムを母材としたもの）１mm厚を加
硫用接着剤を用いて貼合してシートとした。こ
の貼合シート13mm厚を加硫プレスにて130℃×
45分加硫し、一体化接着した。Example (1) Chlorinated butyl rubber (water permeability coefficient 1×10 -8 (g・hr −1・cm −1・mm
Hg -1 ) approximately 2 mm thick and a sound absorbing layer rubber (based on chloroprene rubber) 1 mm thick were laminated together using a vulcanizing adhesive to form a sheet. This laminated sheet 13mm thick was vulcanized at 130℃
Vulcanized for 45 minutes and bonded together.
吸音材層（クロロプレンゴムを母材とし、独
立気泡を含有するもので加硫済）30mm厚に、上
記加硫済シート（塩素化ブチルゴム、クロロプ
レンゴム付き）を接着剤（クロロプレン系接着
剤、ハマタイトＹ−500）にて貼り付け、一体
化した。 The above vulcanized sheet (with chlorinated butyl rubber, chloroprene rubber) is attached to a sound absorbing material layer (vulcanized with chloroprene rubber base material and closed cells) to a thickness of 30 mm using an adhesive (chloroprene adhesive, Hamatite). Y-500) was pasted and integrated.
このようにして得られる海中吸音材は、透水
防止層がバリヤーとなり、透水および海中生物
付着防止剤の移行を良好に防ぐことができる。 In the underwater sound absorbing material obtained in this way, the water permeation prevention layer acts as a barrier, and can effectively prevent water permeation and migration of the marine organism adhesion prevention agent.
(2) クロロプレン系ゴム10mm厚の海中生物付着防
止層に、透水防止層としてFRP（繊維強化プラ
スチツクス）２mm厚、および吸音層ゴム（クロ
ロプレンゴムを母材としたもの）１mm厚を加硫
用接着剤を用いて貼合してシートとした。この
貼合シート13mm厚を加硫プレスにて130℃×45
分加硫し、一体化接着した（ここで、FRP2mm
厚シートは、ガラスクロス入りエポキシ樹脂で
構成されたプリプレグシートである。このシー
トは、160℃×30分間プレスにて加圧・加熱し、
一体化接着させる）。(2) Add a 10 mm thick chloroprene rubber layer to prevent the adhesion of marine organisms, a 2 mm thick FRP (fiber reinforced plastics) layer to prevent water permeation, and a 1 mm thick sound absorbing rubber layer (based on chloroprene rubber) for vulcanization. They were pasted together using adhesive to form a sheet. This laminated sheet 13mm thick was vulcanized at 130℃ x 45cm.
Vulcanized and bonded together (Here, FRP2mm
The thick sheet is a prepreg sheet made of epoxy resin containing glass cloth. This sheet is pressurized and heated in a press at 160℃ for 30 minutes.
glued together).
吸音材層（クロロプレンゴムを母材とし、独
立気泡を含有するもので加硫済）20mm厚に、上
記加硫済シート（FRP、クロロプレンゴムシ
ート付きのもの）をエポキシ−ゴム系接着剤に
て貼り付け、一体化した。 Add the above vulcanized sheet (FRP, with chloroprene rubber sheet) to the sound absorbing material layer (vulcanized with chloroprene rubber base material and closed cells) to a thickness of 20 mm using epoxy-rubber adhesive. pasted and integrated.
このようにして得られる海中吸音材は、透水
防止層がバリヤーとなり、透水および海中生物
付着防止剤の移行を良好に防ぐことができる。 In the underwater sound absorbing material obtained in this way, the water permeation prevention layer acts as a barrier, and can effectively prevent water permeation and migration of the marine organism adhesion prevention agent.
(3) 塩化ビニル樹脂フイルム0.5mm厚を接着剤兼
透水防止層として用いて、前記(1)に記載の海中
生物付着防止層に前記(1)に記載の吸音材層を貼
合した。貼合後、140℃に加熱することにより
フイルムを溶かし、一体的に接着させた。な
お、ここで使用する塩化ビニル樹脂フイルムの
水の透過係数は、0.02×10-8（ｇ・hr-1・cm-1・
mmHg-1）程度である。(3) The sound absorbing material layer described in (1) above was laminated to the marine organism adhesion prevention layer described in (1) above using a 0.5 mm thick vinyl chloride resin film as an adhesive and water permeation prevention layer. After lamination, the film was melted by heating to 140°C and bonded together. The water permeability coefficient of the vinyl chloride resin film used here is 0.02×10 -8 (g・hr −1・cm −1・
mmHg -1 ).
このようにして得られる海中吸音材は、透水
防止層がバリヤーとなり、透水および海中生物
付着防止剤の移行を良好に防ぐことができる。 In the underwater sound absorbing material obtained in this way, the water permeation prevention layer acts as a barrier, and can effectively prevent water permeation and migration of the marine organism adhesion prevention agent.
以上説明したように本考案の海中吸音材は外側
（海水側、すなわち音波入射側）より海中生物付
着防止層、透水防止層、吸音材層の順にて構成さ
れるために、本考案によれば、表面からの海水の
侵入（透水）を透水防止層で阻止することがで
き、さらに内なる吸音材層が保護されるため、長
期に亘つて吸音特性を維持することが可能とな
る。さらに、二次的効果として、海中生物付着防
止層中の付着防止薬剤が吸音材層にブルーム、す
なわち移行するのを防ぐことができ、海中生物付
着防止の機能を永続させることができる。
As explained above, the underwater sound-absorbing material of the present invention is composed of the marine organism adhesion prevention layer, the water permeation prevention layer, and the sound-absorbing material layer in this order from the outside (seawater side, that is, the sound wave incident side). Since the water permeation prevention layer can prevent seawater from entering (water permeation) from the surface, and the inner sound-absorbing material layer is protected, it is possible to maintain sound-absorbing properties over a long period of time. Furthermore, as a secondary effect, it is possible to prevent the adhesion prevention agent in the marine biofouling prevention layer from blooming, that is, migrating to the sound absorbing material layer, thereby making it possible to permanently maintain the marine biofouling prevention function.
第１図は本考案の海中吸音材の一例の断面説明
図である。
１……海中生物付着防止層、２……透水防止
層、３……吸音材層、３１……独立空隙。
FIG. 1 is an explanatory cross-sectional view of an example of the underwater sound-absorbing material of the present invention. 1... Sea creature adhesion prevention layer, 2... Water permeation prevention layer, 3... Sound absorbing material layer, 31... Independent voids.
Claims (1)
中吸音材において、前記吸音材層と前記海中生物
付着防止層との間に、水の透過係数５×10-8
（ｇ・hr-1・cm-1・mmHg-1）以下の材料の透水防
止層を配設したことを特徴とする海中吸音材。 In an underwater sound-absorbing material in which a marine organism adhesion prevention layer is provided on a sound-absorbing material layer, a water permeability coefficient of 5×10 -8 is provided between the sound-absorbing material layer and the marine organism adhesion prevention layer.
(g・hr -1・cm -1・mmHg -1 ) An underwater sound absorbing material characterized by having a water permeation prevention layer made of the following material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP840886U JPH059758Y2 (en) | 1986-01-25 | 1986-01-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP840886U JPH059758Y2 (en) | 1986-01-25 | 1986-01-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62120800U JPS62120800U (en) | 1987-07-31 |
| JPH059758Y2 true JPH059758Y2 (en) | 1993-03-10 |
Family
ID=30792754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP840886U Expired - Lifetime JPH059758Y2 (en) | 1986-01-25 | 1986-01-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH059758Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2660257B2 (en) * | 1994-12-08 | 1997-10-08 | 防衛庁技術研究本部長 | Sound absorbing and insulating material |
-
1986
- 1986-01-25 JP JP840886U patent/JPH059758Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62120800U (en) | 1987-07-31 |
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