JPS6319700A - Underwater sound absorbing material - Google Patents
Underwater sound absorbing materialInfo
- Publication number
- JPS6319700A JPS6319700A JP61164302A JP16430286A JPS6319700A JP S6319700 A JPS6319700 A JP S6319700A JP 61164302 A JP61164302 A JP 61164302A JP 16430286 A JP16430286 A JP 16430286A JP S6319700 A JPS6319700 A JP S6319700A
- Authority
- JP
- Japan
- Prior art keywords
- absorbing material
- underwater sound
- sound absorbing
- rubber
- filler
- 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
- 239000011358 absorbing material Substances 0.000 title claims description 19
- 229920001971 elastomer Polymers 0.000 claims description 26
- 239000005060 rubber Substances 0.000 claims description 24
- 239000000945 filler Substances 0.000 claims description 16
- 229920000642 polymer Polymers 0.000 claims description 15
- 239000011159 matrix material Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- 239000002923 metal particle Substances 0.000 claims description 3
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 229910044991 metal oxide Inorganic materials 0.000 claims 1
- 150000004706 metal oxides Chemical class 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- -1 etc. Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
Landscapes
- 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、水中吸音材に関するものである。[Detailed description of the invention] (Industrial application field) The present invention relates to an underwater sound absorbing material.
（従来技術）
現在、潜水艦、機雷などの位置探知をするためにソーナ
ーによる次のような方法を行なっている。(Prior Art) Currently, the following methods using sonar are used to detect the location of submarines, mines, etc.
すなわちソーナーの音波が潜水艦などにあたって返って
くる反射音を受信してその位置を推定するという方法で
ある。したがって探知防止のためには発射音波を吸音す
ることにより反射波を弱めて受信不能にすれば良い。In other words, it is a method that estimates the location of a submarine by receiving the reflected sound of the sonar's sound waves hitting a submarine or other object. Therefore, in order to prevent detection, it is sufficient to absorb the emitted sound waves to weaken the reflected waves and make them unreceivable.
従来この種の材料としては、■気孔を含有したゴム系材
料や、＠金属粒子を充填剤としたゴム系材料等の適用が
試みられている。Conventionally, as this type of material, attempts have been made to apply rubber-based materials containing pores, @ rubber-based materials containing metal particles as fillers, and the like.
（発明が解決しようとする問題点）
しかし前者のにあっては、せまい周波数範囲でしか吸音
効果を示さないこと、後者＠にあっては経時的に吸音効
果が減少していくという問題があリ、未だこれらの問題
点を解決した水中吸音材は開発されていない。(Problem to be solved by the invention) However, in the former case, the sound absorption effect is exhibited only in a narrow frequency range, and in the latter case, the sound absorption effect decreases over time. However, no underwater sound absorbing material that solves these problems has yet been developed.
上記に鑑み本発明はこのような問題点全解決するため開
発されたものであり、広い周波数範囲で吸音効果を有し
、かつ吸音効果が経時的に変化しない水中吸音材を提供
することを目的とするものである。In view of the above, the present invention was developed to solve all of these problems, and its purpose is to provide an underwater sound-absorbing material that has a sound-absorbing effect over a wide frequency range and whose sound-absorbing effect does not change over time. That is.
（問題点を解決するための手段）
即ち本発明の水中吸音材は、ゴムマトリックス中に充填
剤を分散させたゴム系水中吸音材において、充填剤をゴ
ムマトリックスとは異なる材料でｔｉしたものを、ゴム
マトリ“ンクス中に分散させたことを特徴とするもので
ある。(Means for solving the problem) That is, the underwater sound absorbing material of the present invention is a rubber-based underwater sound absorbing material in which a filler is dispersed in a rubber matrix, and the filler is made of a material different from the rubber matrix. It is characterized by being dispersed in a rubber matrix.
以下に詳細に本発明を説明する。The present invention will be explained in detail below.
本発明の目的は、ゴムマトリックス中に充填剤を分散さ
せたゴム系水中吸音材において充填剤をゴムマトリック
スとは異なる材料で被覆したものをゴムマトリックス中
に分散させた水中吸音材により達成できる。The object of the present invention can be achieved by a rubber-based underwater sound absorbing material in which a filler is dispersed in a rubber matrix, and the filler is coated with a material different from the rubber matrix.
充填剤としては、カーボンブラック、シリカ等既存のゴ
ム、プラスチック用充填剤でよいが、アルミニウム、鉄
、亜鉛、珪素等の金属粒子、ありいはこれらの酸化物粒
子か音波の吸収性能の点から好ましい。As the filler, existing rubber and plastic fillers such as carbon black and silica may be used, but metal particles such as aluminum, iron, zinc, silicon, etc., or particles of these oxides may be used in terms of sound wave absorption performance. preferable.
た
亨填剤の形状は、球状、円柱状、角柱状等いづれでも良
い。またその大きさも既存の範囲で良いが、特に粒径１
μｒｒＬ〜１ ｍｍの範囲のものが音波の吸収性能の点
から好ましい。The shape of the filler may be spherical, cylindrical, prismatic or the like. In addition, the size may be within the existing range, but especially the particle size 1
A thickness in the range of μrrL to 1 mm is preferable from the viewpoint of sound wave absorption performance.
充填剤を被覆するゴムマトリックスとは異なる材料とし
ては、液状シロキサンポリマー、ガム状インブチレンポ
リマー等液状またはガム状のポリマーでよい。ここでい
う液状またはガム状のポリマーとは、充填剤を被覆可能
なものと指すが、加硫ゴム、熱可塑性エラストマー、熱
硬化性エラストマーは除外される。液状またはガム状の
シロキサンポリマー、インブチレンポリマー、ウレタン
ポリマー等が好ましく例示でき、就中ガム状のインブチ
レンポリマーが音波の吸収性能の点から特に好ましい。The material other than the rubber matrix covering the filler may be a liquid or gummy polymer, such as a liquid siloxane polymer or a gummy imbutylene polymer. The liquid or gummy polymer referred to herein refers to one capable of coating a filler, but excludes vulcanized rubber, thermoplastic elastomer, and thermosetting elastomer. Preferred examples include liquid or gum-like siloxane polymers, inbutylene polymers, urethane polymers, etc. Among them, gum-like imbutylene polymers are particularly preferred from the viewpoint of sound wave absorption performance.
被覆ハ、ニーター、ロール、バンバリーなト既存の混合
機を用いて充填剤と液状ポリマーとを混練して行なう。Coating is carried out by kneading the filler and liquid polymer using an existing mixer such as a kneader, roll, or Banbury mixer.
液状ポリマーを被覆した充填剤のゴムへの分散は、ニー
ダ−、ロール、バンバリーなど既存の混−合機を用いて
行なうことかでき、加硫等の工程は分散し、所定の形状
に成型後行なうことができる。Dispersion of the filler coated with liquid polymer into the rubber can be carried out using existing mixers such as kneaders, rolls, and Banbury, and processes such as vulcanization are dispersed, and after molding into the desired shape. can be done.
また、本発明の水中吸音材は海洋生物付着防止機能を付
与することが容易である。すなわち、拡散溶出型、自己
研磨型等の各種防汚塗料を塗布することが容易であり、
さらに長期的に効果を持続させるためには、ゴムの中に
練り込み、そのまま加硫させることも可能である。Further, the underwater sound absorbing material of the present invention can easily be provided with a function of preventing the adhesion of marine organisms. In other words, it is easy to apply various antifouling paints such as diffusion-eluting type and self-polishing type.
Furthermore, in order to maintain the effect over a long period of time, it is also possible to knead it into rubber and vulcanize it as it is.
（実施例） 以下に本発明の実施例を述べる。(Example) Examples of the present invention will be described below.
実施例
粒子径１〜２０μｍの亜鉛粒子と粘度平均分千冊９９万
のインブチレンポリマーとをロールにで混合し、亜鉛粒
子にインブチレンポリマーを被覆した。Example Zinc particles having a particle diameter of 1 to 20 μm and an inbutylene polymer having an average viscosity of 990,000 volumes per minute were mixed on a roll, and the zinc particles were coated with the inbutylene polymer.
このものを特殊配合のアクリロニトリルブタジェンゴム
にロールにて混合し、その後プレス加硫し、厚さ１０順
のシート状の水中吸音材を作成した。This material was mixed with a specially formulated acrylonitrile butadiene rubber using a roll, and then press-vulcanized to create sheet-like underwater sound absorbing materials of 10 thicknesses.
比較例１゜
実施例と同じ特殊配合のアクリロニトリルブタジェンゴ
ムをプレス加硫し、厚さ２ｍのシートとし、これに径２
ｗｎの円柱状気孔をピッチ１０頭であけた。Comparative Example 1゜ Acrylonitrile butadiene rubber with the same special formulation as in the example was press-cured to form a sheet with a thickness of 2 m, and this was
The cylindrical pores of wn were opened at a pitch of 10 heads.
この気孔人ゴムシートに厚さ４訓の同じゴムシートを両
側から貼合せ、ゴムシート／気孔人ゴムシート／ゴムシ
ートの３層構造の水中吸音材を作成した。The same rubber sheet with a thickness of 4 layers was laminated on both sides of this Kokojin rubber sheet to create an underwater sound absorbing material with a three-layer structure of rubber sheet/Kokojin rubber sheet/rubber sheet.
比較例２゜
実施例と同じ４鉛粒子およびゴムを用い、ゴムに亜鉛粒
子を実施例と同じ方法で混合、プレス加硫し厚さ１０ｍ
ｍのシート状の水中吸音材を作成した。Comparative Example 2゜Using the same 4 lead particles and rubber as in the example, zinc particles were mixed with the rubber in the same manner as in the example, and press vulcanization was performed to a thickness of 10 m.
A sheet-like underwater sound-absorbing material of m was created.
以上それぞれの吸音特性と測定したところ第１表て示す
結果が得られた。When the sound absorption properties of each of the above were measured, the results shown in Table 1 were obtained.
なお吸音特性の測定方法は第１図に概略に示す様ニ、ハ
ルスジエネレータ−、トリガーパルス、アンプ、送波器
により特定周波数のトリガーのかかった音波を発生させ
、受波器にてその直接波および試料に当ってはね返って
きた反射波とを検出し、その音圧レベルの差をデシベル
単位で読み、吸音（ｄＢ）とした。The method for measuring sound absorption characteristics is as shown schematically in Figure 1. A triggered sound wave of a specific frequency is generated by a Hals generator, a trigger pulse, an amplifier, and a wave transmitter. The waves and the reflected waves that hit the sample and bounced back were detected, and the difference in sound pressure level was read in decibels and was defined as sound absorption (dB).
第 １ 表 吸音特性
この結果、実施例のものは、比較例１に比べて広い周波
数範囲での吸音効果を有し、また比較例２に比べて経時
的に変化しないことがわかる。Table 1 Sound Absorption Characteristics The results show that the examples have a sound absorption effect in a wider frequency range than Comparative Example 1, and do not change over time compared to Comparative Example 2.
（発明の効果）
以上の様に本発明の水中吸音材によると、広い周波数範
囲で吸音効果を有し、かつ吸音効果が経時的に変化しな
い。(Effects of the Invention) As described above, the underwater sound-absorbing material of the present invention has a sound-absorbing effect over a wide frequency range, and the sound-absorbing effect does not change over time.
第１図は本発明の実施例に於ける吸音特性測定方法の概
略図を例示している。FIG. 1 illustrates a schematic diagram of a method for measuring sound absorption characteristics in an embodiment of the present invention.
Claims (6)
水中吸音材に於いて、充填剤をゴムマトリックスとは異
なる材料で被覆したものを、ゴムマトリックス中に分散
させたことを特徴とする水中吸音材。(1) A rubber-based underwater sound absorbing material in which a filler is dispersed in a rubber matrix, characterized in that the filler is coated with a material different from the rubber matrix and is dispersed in the rubber matrix. Sound absorbing material.
（１）項記載の水中吸音材。(2) The underwater sound absorbing material according to claim (1), which uses metal particles as a filler.
範囲第（１）項記載の水中吸音材。(3) The underwater sound absorbing material according to claim (1), which uses metal oxide particles as a filler.
第（３）項記載の水中吸音材。(4) The underwater sound absorbing material according to claim (2) or (3), wherein the metal is zinc.
ガム状のポリマーを用いた特許請求の範囲第（１）項、
第（２）項、第（３）項又は第（４）項記載の水中吸音
材。(5) Claim (1) in which a liquid or gum-like polymer is used as the material different from the rubber matrix;
The underwater sound-absorbing material described in item (2), item (3), or item (4).
リマーを用いた特許請求の範囲第（５）項記載の水中吸
音材。(6) The underwater sound absorbing material according to claim (5), wherein a gum-like isobutylene polymer is used as the gum-like polymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61164302A JPS6319700A (en) | 1986-07-12 | 1986-07-12 | Underwater sound absorbing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61164302A JPS6319700A (en) | 1986-07-12 | 1986-07-12 | Underwater sound absorbing material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6319700A true JPS6319700A (en) | 1988-01-27 |
Family
ID=15790538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61164302A Pending JPS6319700A (en) | 1986-07-12 | 1986-07-12 | Underwater sound absorbing material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6319700A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62115198A (en) * | 1985-11-14 | 1987-05-26 | 富士通株式会社 | Manufacture of sound wave absorbing body |
-
1986
- 1986-07-12 JP JP61164302A patent/JPS6319700A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62115198A (en) * | 1985-11-14 | 1987-05-26 | 富士通株式会社 | Manufacture of sound wave absorbing body |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3894169A (en) | Acoustical damping structure and method of preparation | |
| US4300219A (en) | Bowed elastomeric window | |
| KR0126140B1 (en) | Thermoplastic compositions and articles made therefrom | |
| RU2155780C2 (en) | Plastisol with acoustic effect | |
| Dragonette et al. | Calibration technique for acoustic scattering measurements | |
| US4390976A (en) | Acoustic signal conditioning device | |
| CN108034344A (en) | A kind of medium temperature wide temperature range polyurethane damping paint and preparation method thereof | |
| JPS6319700A (en) | Underwater sound absorbing material | |
| CN102470733A (en) | Door hole cover and vehicular door structure | |
| US2496060A (en) | Submarine signaling device covered with waterproof vibration damping shield | |
| CN101625856B (en) | Preparation method of multifrequency sound absorption foam faced material | |
| KR930010441B1 (en) | Marking materials | |
| CN116056398A (en) | Sand-proof marine organism parasitic acoustic transducer protective cover and novel acoustic transducer | |
| US4062422A (en) | Antifouling damping system for sonar domes | |
| JP3495270B2 (en) | Ultrasonic measurement components | |
| JPS5832637A (en) | Underwater sound absorbing material | |
| US3908790A (en) | Sonar dome window damping and application procedure | |
| JP2660257B2 (en) | Sound absorbing and insulating material | |
| JPH0543422Y2 (en) | ||
| CN218941554U (en) | Sand-proof marine organism parasitic acoustic transducer protective cover and novel acoustic transducer | |
| CN110283550A (en) | Bonding sheet and disk set | |
| JPH10206213A (en) | Ultrasonic level gauge | |
| US3644247A (en) | Encapsulating elastomeric compound | |
| CN218623041U (en) | Polyurethane sandwich panel with noise reduction effect | |
| JPS5839453B2 (en) | Film for writing and printing |