JPS5832637A - Underwater sound absorbing material - Google Patents
Underwater sound absorbing materialInfo
- Publication number
- JPS5832637A JPS5832637A JP56129897A JP12989781A JPS5832637A JP S5832637 A JPS5832637 A JP S5832637A JP 56129897 A JP56129897 A JP 56129897A JP 12989781 A JP12989781 A JP 12989781A JP S5832637 A JPS5832637 A JP S5832637A
- Authority
- JP
- Japan
- Prior art keywords
- sound absorbing
- curing
- underwater sound
- absorbing material
- mixture
- 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 abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- 239000000945 filler Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 239000003822 epoxy resin Substances 0.000 claims abstract 2
- 229920000647 polyepoxide Polymers 0.000 claims abstract 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 229920000642 polymer Polymers 0.000 abstract description 4
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 abstract description 2
- 229910002113 barium titanate Inorganic materials 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract 4
- 238000007906 compression Methods 0.000 abstract 4
- 238000005253 cladding Methods 0.000 abstract 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 241000951471 Citrus junos Species 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、特に潜水艦に使用される水中吸音材に関する
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to underwater sound absorbing materials, particularly for use in submarines.
現在、潜水艦の位置を探知するには、超音波発信装置か
ら発射された超音波が潜水艦に当って反射してきたとこ
ろを受信解析してその位置を推定している。Currently, in order to detect the location of a submarine, the location is estimated by analyzing the reception of ultrasound waves emitted from an ultrasound transmitter that hit the submarine and reflect back.
従って、探知防止のためには、潜水艦に超音波が当った
場合でも反射しないようにするか、あるいは柚々の方向
に拡散させ、受信させないようにすればよい。Therefore, in order to prevent detection, even if ultrasonic waves hit a submarine, they should be prevented from being reflected, or they should be diffused in the direction of Yuzu so that they cannot be received.
従来、この種の水中吸音材としては気泡を含有したゴム
系材料により形成したものが使用され、なるため、気泡
の占める体積が小さくなり、実質的に吸音効果が喪失す
るという難点があった。Conventionally, this type of underwater sound absorbing material has been made of a rubber-based material containing air bubbles, which has the disadvantage that the volume occupied by the air bubbles is small and the sound absorption effect is substantially lost.
吸音効果を維持し得る水中吸音材を提供することを目的
とする。The purpose of the present invention is to provide an underwater sound absorbing material that can maintain its sound absorbing effect.
本発明は、液状ポリマーに硬化剤、充填剤を添加混合し
、かつ気泡を含有する常温硬化型混和物で硬化後の圧縮
強度が６０に９／ｃＷＩ以上かつ圧縮弾性率が）８０Ｊ
９／ｅｓＪ以上であることを特徴とする水中吸音材であ
る。The present invention is a room-temperature curable mixture in which a curing agent and a filler are added to and mixed with a liquid polymer and contains bubbles, and the compressive strength after curing is 60.9/cWI or more and the compressive modulus is 80 J.
This is an underwater sound absorbing material characterized by having a value of 9/esJ or more.
本発明に使用する液状ポリマーとしてはエゲキ鉄・チタ
ン酸バリウム等既知の充填材料でよい。The liquid polymer used in the present invention may be any known filler material such as iron or barium titanate.
本発明者等は、各種材料の配合量を変えてなる水中吸音
材をつくり、これらの吸音材につき、超音波反射の有無
、圧縮強度、圧縮弾性率を測定する実験を行った。この
実験結果を下表に示す。The present inventors created underwater sound absorbing materials with varying amounts of various materials, and conducted experiments to measure the presence or absence of ultrasonic reflection, compressive strength, and compressive elastic modulus of these sound absorbing materials. The results of this experiment are shown in the table below.
以 下 余 白
実験は上表に示す配合剤を混合攪拌し、直径１０龍φ、
高さ２０■に成型硬化させたサンプルを使用した。In the experiment, the ingredients shown in the table above were mixed and stirred,
A sample molded and cured to a height of 20 cm was used.
超音波で反射するかどうかはクラウドクレーマー社製超
音波探傷機を使用して大気圧下で確認したＯ
また圧縮強度、圧縮弾性率は高滓製作所製オージグラフ
にて測定した。Whether or not ultrasonic waves were reflected was confirmed under atmospheric pressure using an ultrasonic flaw detector manufactured by Cloud Kramer Co. Compressive strength and compressive elastic modulus were measured using an Augigraph manufactured by Takasugi Seisakusho.
而して、上記実験によれば、圧縮強度を、６００鳳の深
海中でも水中吸音材が破壊しないことを考えて６０＆Ｉ
Ｐ／ａＪ以上、また圧縮弾性率を、６０ｊ９／ｄの圧力
（水圧）でも変形量が１／３より小さければ、吸音効果
があまり変化しないことから考えて１８０Ｊ９／ａ１１
以上とすることを基準にすると、Ａ３及びＡ６がすぐれ
ていることがわかる。According to the above experiment, the compressive strength was set to 60&I, considering that the underwater sound absorbing material would not be destroyed even in the deep sea.
P/aJ or more, and the compressive elastic modulus is 180J9/a11, considering that if the amount of deformation is smaller than 1/3 even at a pressure (water pressure) of 60j9/d, the sound absorption effect will not change much.
Based on the above criteria, it can be seen that A3 and A6 are superior.
なお、上表中、超音波反射の有無は大気圧下でまたＡ８
については変形量が大であるから大きな圧力を受けると
吸音効果が低減し超音波反射が起こる可能性がある。In addition, in the above table, the presence or absence of ultrasonic reflection is under atmospheric pressure and A8
Since the amount of deformation is large, if large pressure is applied to the material, the sound absorption effect may be reduced and ultrasonic reflection may occur.
本発明においては、上表配合剤の他に、促進材、着色側
、老化防止剤等を添加しても何ら差し支えない。In the present invention, in addition to the ingredients listed above, there is no problem in adding promoters, coloring agents, anti-aging agents, etc.
３００ｍ以上の水中にあっても気泡がつぶれず吸音効果
を維持することができる。Even when underwater at a depth of 300m or more, the bubbles do not collapse and the sound absorption effect can be maintained.
Claims (1)
気泡を含有する常温硬化型混和物で硬化後の圧縮強度が
６０＆ｐ／ｃｊ以上かつ圧縮弾性率が１８０ｊ９／Ｃ１
１以上であることを特徴とする水中吸音材０ ２、液状ポリ！−としてエポキシ樹脂を使用することを
特徴とする特許請求の範囲第１項記載の水中吸音材。[Claims] 1. Liquid poly! - A room-temperature curing mixture containing air bubbles and a curing agent and a filler, with a compressive strength of 60&p/cj or more and a compressive modulus of elasticity of 180j9/C1 after curing.
0 2, liquid poly! 2. The underwater sound absorbing material according to claim 1, wherein an epoxy resin is used as the material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56129897A JPS5832637A (en) | 1981-08-19 | 1981-08-19 | Underwater sound absorbing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56129897A JPS5832637A (en) | 1981-08-19 | 1981-08-19 | Underwater sound absorbing material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5832637A true JPS5832637A (en) | 1983-02-25 |
Family
ID=15021067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56129897A Pending JPS5832637A (en) | 1981-08-19 | 1981-08-19 | Underwater sound absorbing material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5832637A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105270584A (en) * | 2015-11-05 | 2016-01-27 | 李建明 | Low-noise submarine |
| CN105419328A (en) * | 2016-01-11 | 2016-03-23 | 苏州大学 | Modified barium titanate foamed ceramic/thermosetting resin composite material and preparation method thereof |
-
1981
- 1981-08-19 JP JP56129897A patent/JPS5832637A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105270584A (en) * | 2015-11-05 | 2016-01-27 | 李建明 | Low-noise submarine |
| CN105419328A (en) * | 2016-01-11 | 2016-03-23 | 苏州大学 | Modified barium titanate foamed ceramic/thermosetting resin composite material and preparation method thereof |
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