JPH0635574B2 - Water-soluble foam composition - Google Patents
Water-soluble foam compositionInfo
- Publication number
- JPH0635574B2 JPH0635574B2 JP60227024A JP22702485A JPH0635574B2 JP H0635574 B2 JPH0635574 B2 JP H0635574B2 JP 60227024 A JP60227024 A JP 60227024A JP 22702485 A JP22702485 A JP 22702485A JP H0635574 B2 JPH0635574 B2 JP H0635574B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- weight
- foam
- composition
- foaming
- 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 - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は周波数が主として４ kHz〜４０ kHzの目的外
音源からの水中音を反射させるために用いる水溶型発泡
体の組成物に関するものである。TECHNICAL FIELD The present invention relates to a composition of a water-soluble foam used for reflecting underwater sound from an unintended sound source whose frequency is mainly 4 kHz to 40 kHz. .
（従来の技術） 従来、発泡体は水中音を反射させる性質を持ち、この性
質を利用するものとして第２図に示すようなコーナリフ
レクタ１が用いられている。このコーナリフレクタ１は
独立気泡を有する発泡ゴムやキルクゴム等を一体成形又
は張付けた構造体で、音源が発生する周辺に前記コーナ
リフレクタ群を配置し、水中音を遮断（反射）させて水
中機器２への影響を防ぐようにしている。なお、３は浮
力体、４は作業船を示す。(Prior Art) Conventionally, a foam has a property of reflecting underwater sound, and a corner reflector 1 as shown in FIG. 2 has been used to utilize this property. This corner reflector 1 is a structure body formed by integrally molding or pasting foamed rubber or kirk rubber having closed cells. The corner reflectors are arranged in the vicinity where a sound source is generated, and the underwater sound is blocked (reflected) 2 I try to prevent the influence on. In addition, 3 shows a buoyant body, 4 shows a work boat.
（発明が解決しようとする問題点） しかしながら、上記構成のコーナリフレクタ１では水中
の広い範囲に反射体を並べ配置することは困難であっ
た。更に、高水圧下では発泡体が水圧に耐えない等の問
題点があった。(Problems to be Solved by the Invention) However, in the corner reflector 1 having the above configuration, it is difficult to arrange the reflectors side by side in a wide range in water. Further, there is a problem that the foam cannot withstand water pressure under high water pressure.
したがって、この発明は前記従来技術が持っていた問題
点を解決したもので水と反応し、短時間に発泡させるこ
とができ、海中への投下量をコントロールすることで、
任意の範囲に気泡ゾーンが流れ、水中音を反射させるこ
とができる水溶型発泡体の組成物を提供するものであ
る。Therefore, the present invention is a solution to the problems of the above-mentioned conventional technology, reacts with water, can be foamed in a short time, by controlling the amount dropped into the sea,
The present invention provides a composition of a water-soluble foam capable of allowing a bubble zone to flow in an arbitrary range and reflecting underwater sound.
（問題点を解決するための手段） 本発明者は、このような問題点を改良すべく鋭意研究を
行った結果、水素化合物の中で、取扱いが比較的容易な
水素化リチウムに展着剤としてパラフィンワックス、ポ
リエチレングリコール及びナフタリンを一定配合比率で
混合した組成物を圧縮成形加工して固化させることによ
り水と反応して発泡する時間及び単位時間当りの発泡量
を制御し、均一な泡を連続して発泡させることができる
という極めて特徴のある水溶型発泡体の組成物が得られ
ることを見出し、本発明に到達したものである。(Means for Solving Problems) As a result of intensive research to improve such problems, the present inventors have found that among hydrogen compounds, a spreading agent for lithium hydride, which is relatively easy to handle. As a composition, paraffin wax, polyethylene glycol and naphthalene are mixed in a fixed mixing ratio, and the composition is compression molded to be solidified, thereby controlling the time for foaming by reacting with water and the foaming amount per unit time, and uniform foaming. The present invention has been accomplished by finding that a composition of a water-soluble foam having an extremely characteristic feature of being able to continuously foam is obtained.
すなわち本発明は、主体に水と反応して発泡する水素化
リチウムと展着剤としてパラフィンワックス、ポリエチ
レングリコール及びナフタリンより成り、その割合が粒
径４〜７m/mの岩塩型結晶体の水素化リチウムを８０重
量％に対し、パラフィンワックス１５〜２０重量％と、
ポリエチレングリコール４〜５重量％と、ナフタリン１
重量％以下とよりなる展着剤合計２０重量％を配合し８
０〜１００℃で予熱しながら混合し、加圧成形して固化
せしめたことを特徴とする水溶型発泡体の組成物であ
る。That is, the present invention mainly comprises lithium hydride that foams upon reaction with water, and paraffin wax, polyethylene glycol and naphthalene as a spreading agent, the proportion of which is 4-7 m / m in particle size for hydrogenation of rock salt type crystals. Paraffin wax 15 to 20% by weight with respect to 80% by weight of lithium,
Polyethylene glycol 4-5% by weight and naphthalene 1
A total of 20% by weight of the spreading agent consisting of less than or equal to 8% by weight is blended and 8
It is a composition of a water-soluble foam characterized by being mixed while being preheated at 0 to 100 ° C. and being pressure-molded to be solidified.
水素化合物は水と反応すると発泡し、更に水中の泡は音
波を反射させる性質があることは一般に知られている。It is generally known that hydrogen compounds foam when they react with water, and that the bubbles in water have the property of reflecting sound waves.
本発明に用いられる水素化リチウムは岩塩型結晶体であ
り、このままの状態では、空気中の水分と反応し、速や
かに風化し、また多量の水と接触すると急激な反応を起
こすため取扱いが難しく、実用に供しない状態である。Lithium hydride used in the present invention is a rock salt type crystal, and in this state, it reacts with moisture in the air, quickly weathers, and is difficult to handle because it causes a rapid reaction when contacted with a large amount of water. , Is in a state of not being put to practical use.
本発明のように水中音（周波数４ kHz〜４０kHz ）とし
て利用する水溶型発泡体の組成物としては (1) 所定時間内で連続して発泡すること。The composition of the water-soluble foam used as underwater sound (frequency 4 kHz to 40 kHz) as in the present invention is: (1) Continuous foaming within a predetermined time.
(2) 泡の大きさは均一であること。(2) The size of bubbles should be uniform.
(3) 発泡持続時間が長いこと。(3) Long foaming duration.
等を考慮する必要がある。Etc. need to be considered.
このような組成物は例えば次のような方法で容易に製造
することができる。Such a composition can be easily produced, for example, by the following method.
まず、岩塩型結晶体の水素化リチウムに、展着剤として
パラフィンワックス、ポリエチレングリコール及びナフ
タリンを適量計量し、予熱（８０〜１００℃）しながら
撹拌し、均一に混合を行なう。First, an appropriate amount of paraffin wax, polyethylene glycol and naphthalene as a spreading agent is weighed in lithium hydride of rock salt type crystal body, stirred while preheating (80 to 100 ° C.), and uniformly mixed.
次に、予熱の状態で加圧成形することで、水溶型発泡体
の組成物を作ることができる。なお、主体が水素化リチ
ウムで空気中の水分と反応するため、ナフタリンは水溶
型発泡体の風化、硝煙のために添加するもので、少量で
十分である。Next, the composition of the water-soluble foam can be prepared by pressure molding in a preheated state. Since the main component reacts with moisture in the air with lithium hydride, naphthalene is added for weathering of the water-soluble foam and smoke, and a small amount is sufficient.
（実施例） 以下実施例により説明する。(Example) An example will be described below.
先ず、配合比率の異なる発泡体の組成物を第１表に示す
条件で、かつ前記した方法で試験試料として製造し、性
能について測定した。First, foam compositions having different blending ratios were manufactured as test samples under the conditions shown in Table 1 and by the method described above, and the performance was measured.
その結果、第２表及び第１図に示すように、次の事が解
明された。 As a result, as shown in Table 2 and FIG. 1, the following was clarified.
1. 泡の均一姓については水素化リチウムの量が多過ぎ
（含有量９０％）ても、又少な過ぎ（含有量７０％）て
も、泡は均一に発泡しないことがわかった。 1. Regarding the uniform foam, it was found that the foam did not foam uniformly when the amount of lithium hydride was too large (content 90%) or too small (content 70%).
2. 発泡持続時間についても、上記と同様の傾向を示す
ことがわかった。2. It was found that the foaming duration also showed the same tendency as above.
3. 単位時間当りの発泡量は短時間であれば水素化リチ
ウムの含有量が多い方が、発泡量は多くなるが長時間発
泡を持続させることができないことがわかった。3. It was found that if the amount of foaming per unit time is short, the larger the content of lithium hydride, the larger the amount of foaming, but the longer the foaming cannot be maintained.
4. 更に、上記結果より良好と思われる試料（Ｃ，Ｄ，
Ｅ）について周波数４ kHz〜４０ kHzの範囲について反
射率を測定した結果（第１図参照）からも試料Ｅが泡の
均一性、発泡持続時間、単位時間当りの発泡量の結果と
ほぼ同様の効果があることがわかった。4. Furthermore, the samples (C, D,
From the result of measuring the reflectance in the frequency range of 4 kHz to 40 kHz for E) (see FIG. 1), Sample E is almost the same as the result of the uniformity of foam, foaming duration, and foaming amount per unit time. It turned out to be effective.
5. 水素化リチウムの粒径と泡の大きさは、ほぼ比例
し、泡の径が小さい（水素化リチウムの粒径が１m/m相
当品使用）と比較的周波数が高い場合（〜１００ kHz相
当以上）には反射効果が見られる。5. Lithium hydride particle size and bubble size are almost proportional, and when the bubble size is small (a lithium hydride particle size of 1 m / m or equivalent is used), the frequency is relatively high (up to 100 kHz). A considerable amount) has a reflection effect.
また、泡の径が大きい（水素化リチウムの粒径が７〜１
２m/m相当品使用）と、広帯域の周波数まで反射効果が
見られ、泡の径が大きいのが好ましいが、泡の連続性、
均一性に問題がある。Moreover, the diameter of bubbles is large (the particle size of lithium hydride is 7 to 1).
2m / m equivalent product is used), and the reflection effect is seen up to a wide frequency band, and it is preferable that the diameter of the bubble is large,
There is a problem with uniformity.
本試験の結果、水中音の周波数帯域４ kHz〜４０ kHzで
は水素化リチウムの粒径は４〜７m/m相当（市販品のバ
ラツキの範囲）が有効であった。As a result of this test, it was effective that the particle size of lithium hydride was equivalent to 4 to 7 m / m (range of variation of commercially available product) in the frequency band of underwater sound of 4 kHz to 40 kHz.
6. 水素化リチウムと混ぜる展着剤はパラフィンワック
ス、ポリエチレングリコールの油脂系のものは水素化リ
チウムを均一に分散させる効果があり、比較的低温で液
状化することが必要で、分子量が上がると、融点も上が
り、作業性が悪くなる傾向になる。本実施例では分子量
３０００相当品が固化させる場合良好であった。6. The spreading agent mixed with lithium hydride is a paraffin wax, and the fat-and-oil type of polyethylene glycol has the effect of uniformly dispersing lithium hydride, and it is necessary to liquefy at a relatively low temperature. The melting point also rises, and workability tends to deteriorate. In this example, the case where a product having a molecular weight of 3000 was solidified was good.
更に展着剤の効果として水素化リチウムの露出面が適度
に調整され、発泡速度がコントロールされる効果が生じ
た。そのため、水素化リチウム８０重量部／展着剤２０
重量部が好ましい結果が得られた。Further, as the effect of the spreading agent, the exposed surface of lithium hydride was appropriately adjusted, and the effect of controlling the foaming rate was produced. Therefore, 80 parts by weight of lithium hydride / spreading agent 20
Good results have been obtained with parts by weight.
（発明の効果） 本発明の組成物は発泡する時間及び単位時間当りの発泡
量を制御し、均一な泡を連続発泡させることができ、更
に小型で取扱いが容易で、手軽に水中に気泡ゾーンを作
ることができるので、水中音を反射させたい場合に有効
で、水中音発生源周辺にあらかじめ本発明の組成物を水
中に投下し、水中音を反射させたい範囲に気泡ゾーンを
作り水中機器の音響性能試験や水中音を遮断したい場合
等に利用して大きな効果がある。(Effects of the Invention) The composition of the present invention can control the foaming time and the foaming amount per unit time to continuously foam a uniform foam, which is further small and easy to handle, and can be easily bubbled into a water bubble zone. It is effective when you want to reflect underwater sound, so you can drop the composition of the present invention in the water around the underwater sound source in advance to create a bubble zone in the range where you want to reflect underwater sound. It has a great effect when used in the acoustic performance test and when you want to block the underwater sound.
第１図は本発明組成物における反射率対音波周波数の特
性曲線、第２図は従来によるコーナリフレクタの利用説
明図である。 １……コーナリフレクタ、２……水中機器、３……浮力
体、４……作業船FIG. 1 is a characteristic curve of reflectance versus sound wave frequency in the composition of the present invention, and FIG. 2 is an explanatory view of using a conventional corner reflector. 1 ... Corner reflector, 2 ... Underwater equipment, 3 ... Buoyant body, 4 ... Work boat
Claims (1)
ムと展着剤としてパラフィンワックス、ポリエチレング
リコール及びナフタリンより成り、その割合が粒径４〜
７m/m の岩塩型結晶体の水素化リチゥムを８０重量％に
対し、パラフィンワックス１５〜２０重量％、ポリエチ
レングリコール４〜５重量％と、ナフタリン１重量％以
下とよりなる展着剤合計２０重量％を配合し、８０〜１
００℃で予熱しながら混合し、加圧成形して固化せしめ
たことを特徴とする水溶型発泡体の組成物。1. A main constituent is hydrogenated lithium which foams upon reaction with water, and paraffin wax, polyethylene glycol and naphthalene as a spreading agent, the proportion of which is 4 to 4.
A total of 20% by weight of 7m / m of rock salt type crystalline hydrogenated hydride, consisting of 15 to 20% by weight of paraffin wax, 4 to 5% by weight of polyethylene glycol and 1% by weight or less of naphthalene. %, 80-1
A composition of a water-soluble foam, characterized in that it is mixed while being preheated at 00 ° C. and is pressure-molded to be solidified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60227024A JPH0635574B2 (en) | 1985-10-14 | 1985-10-14 | Water-soluble foam composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60227024A JPH0635574B2 (en) | 1985-10-14 | 1985-10-14 | Water-soluble foam composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6286082A JPS6286082A (en) | 1987-04-20 |
| JPH0635574B2 true JPH0635574B2 (en) | 1994-05-11 |
Family
ID=16854317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60227024A Expired - Fee Related JPH0635574B2 (en) | 1985-10-14 | 1985-10-14 | Water-soluble foam composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0635574B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2804103B2 (en) * | 1989-08-14 | 1998-09-24 | 株式会社日立製作所 | Shaft sealing device for concentric twin shaft |
| JP4384227B2 (en) * | 2005-11-10 | 2009-12-16 | 株式会社ヒロマイト | Hydrogen generator and its use |
| JP4489144B2 (en) * | 2007-04-12 | 2010-06-23 | 株式会社ヒロマイト | HYDROGEN GENERATOR, MANUFACTURING METHOD, AND HYDROGEN GENERATOR |
| CN103708419B (en) * | 2013-12-27 | 2015-03-11 | 北京科技大学 | Method for preparing of high-activity LiH microspheres through wet process |
| CN107324280A (en) * | 2017-07-04 | 2017-11-07 | 厦门大学 | The anti-oxidant coating of moisture-resistant and its processing method of aluminium base hydrolytic hydrogen production material |
-
1985
- 1985-10-14 JP JP60227024A patent/JPH0635574B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6286082A (en) | 1987-04-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |