JPS5920101B2 - Couplant for non-destructive testing - Google Patents
Couplant for non-destructive testingInfo
- Publication number
- JPS5920101B2 JPS5920101B2 JP7997678A JP7997678A JPS5920101B2 JP S5920101 B2 JPS5920101 B2 JP S5920101B2 JP 7997678 A JP7997678 A JP 7997678A JP 7997678 A JP7997678 A JP 7997678A JP S5920101 B2 JPS5920101 B2 JP S5920101B2
- Authority
- JP
- Japan
- Prior art keywords
- couplant
- polyvinyl alcohol
- present
- plasticizer
- sodium
- 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
Links
- 238000009659 non-destructive testing Methods 0.000 title claims description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 15
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 15
- 239000004014 plasticizer Substances 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 13
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 12
- 239000002202 Polyethylene glycol Substances 0.000 description 11
- 229920001223 polyethylene glycol Polymers 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000001514 detection method Methods 0.000 description 7
- 239000003921 oil Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 235000011187 glycerol Nutrition 0.000 description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000003112 inhibitor Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003755 preservative agent Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- MUHFRORXWCGZGE-KTKRTIGZSA-N 2-hydroxyethyl (z)-octadec-9-enoate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCCO MUHFRORXWCGZGE-KTKRTIGZSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004288 Sodium dehydroacetate Substances 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229940095098 glycol oleate Drugs 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 230000002335 preservative effect Effects 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
- 238000007127 saponification reaction Methods 0.000 description 2
- 235000019259 sodium dehydroacetate Nutrition 0.000 description 2
- 229940079839 sodium dehydroacetate Drugs 0.000 description 2
- 235000019830 sodium polyphosphate Nutrition 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- DSOWAKKSGYUMTF-GZOLSCHFSA-M sodium;(1e)-1-(6-methyl-2,4-dioxopyran-3-ylidene)ethanolate Chemical compound [Na+].C\C([O-])=C1/C(=O)OC(C)=CC1=O DSOWAKKSGYUMTF-GZOLSCHFSA-M 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- JNYAEWCLZODPBN-JGWLITMVSA-N (2r,3r,4s)-2-[(1r)-1,2-dihydroxyethyl]oxolane-3,4-diol Chemical compound OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O JNYAEWCLZODPBN-JGWLITMVSA-N 0.000 description 1
- ZORQXIQZAOLNGE-UHFFFAOYSA-N 1,1-difluorocyclohexane Chemical compound FC1(F)CCCCC1 ZORQXIQZAOLNGE-UHFFFAOYSA-N 0.000 description 1
- CMCBDXRRFKYBDG-UHFFFAOYSA-N 1-dodecoxydodecane Chemical compound CCCCCCCCCCCCOCCCCCCCCCCCC CMCBDXRRFKYBDG-UHFFFAOYSA-N 0.000 description 1
- SULMJNSTRFZXCN-UHFFFAOYSA-N 2-(furan-2-yl)-3-nitroprop-2-enamide Chemical compound [O-][N+](=O)C=C(C(=O)N)C1=CC=CO1 SULMJNSTRFZXCN-UHFFFAOYSA-N 0.000 description 1
- MPNXSZJPSVBLHP-UHFFFAOYSA-N 2-chloro-n-phenylpyridine-3-carboxamide Chemical compound ClC1=NC=CC=C1C(=O)NC1=CC=CC=C1 MPNXSZJPSVBLHP-UHFFFAOYSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000004287 Dehydroacetic acid Substances 0.000 description 1
- MJVAVZPDRWSRRC-UHFFFAOYSA-N Menadione Chemical compound C1=CC=C2C(=O)C(C)=CC(=O)C2=C1 MJVAVZPDRWSRRC-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- BCKXLBQYZLBQEK-KVVVOXFISA-M Sodium oleate Chemical compound [Na+].CCCCCCCC\C=C/CCCCCCCC([O-])=O BCKXLBQYZLBQEK-KVVVOXFISA-M 0.000 description 1
- HVUMOYIDDBPOLL-XWVZOOPGSA-N Sorbitan monostearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O HVUMOYIDDBPOLL-XWVZOOPGSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- FHKPLLOSJHHKNU-INIZCTEOSA-N [(3S)-3-[8-(1-ethyl-5-methylpyrazol-4-yl)-9-methylpurin-6-yl]oxypyrrolidin-1-yl]-(oxan-4-yl)methanone Chemical group C(C)N1N=CC(=C1C)C=1N(C2=NC=NC(=C2N=1)O[C@@H]1CN(CC1)C(=O)C1CCOCC1)C FHKPLLOSJHHKNU-INIZCTEOSA-N 0.000 description 1
- JAWMENYCRQKKJY-UHFFFAOYSA-N [3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-ylmethyl)-1-oxa-2,8-diazaspiro[4.5]dec-2-en-8-yl]-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]methanone Chemical group N1N=NC=2CN(CCC=21)CC1=NOC2(C1)CCN(CC2)C(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F JAWMENYCRQKKJY-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 150000001346 alkyl aryl ethers Chemical class 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 235000019258 dehydroacetic acid Nutrition 0.000 description 1
- 229940061632 dehydroacetic acid Drugs 0.000 description 1
- JEQRBTDTEKWZBW-UHFFFAOYSA-N dehydroacetic acid Chemical compound CC(=O)C1=C(O)OC(C)=CC1=O JEQRBTDTEKWZBW-UHFFFAOYSA-N 0.000 description 1
- PGRHXDWITVMQBC-UHFFFAOYSA-N dehydroacetic acid Natural products CC(=O)C1C(=O)OC(C)=CC1=O PGRHXDWITVMQBC-UHFFFAOYSA-N 0.000 description 1
- POULHZVOKOAJMA-UHFFFAOYSA-M dodecanoate Chemical compound CCCCCCCCCCCC([O-])=O POULHZVOKOAJMA-UHFFFAOYSA-M 0.000 description 1
- DDXLVDQZPFLQMZ-UHFFFAOYSA-M dodecyl(trimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)C DDXLVDQZPFLQMZ-UHFFFAOYSA-M 0.000 description 1
- NUVBSKCKDOMJSU-UHFFFAOYSA-N ethylparaben Chemical compound CCOC(=O)C1=CC=C(O)C=C1 NUVBSKCKDOMJSU-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229940070765 laurate Drugs 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- IAIWVQXQOWNYOU-FPYGCLRLSA-N nitrofural Chemical compound NC(=O)N\N=C\C1=CC=C([N+]([O-])=O)O1 IAIWVQXQOWNYOU-FPYGCLRLSA-N 0.000 description 1
- 229960001907 nitrofurazone Drugs 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 1
- 235000010234 sodium benzoate Nutrition 0.000 description 1
- 239000004299 sodium benzoate Substances 0.000 description 1
- PXLIDIMHPNPGMH-UHFFFAOYSA-N sodium chromate Chemical compound [Na+].[Na+].[O-][Cr]([O-])(=O)=O PXLIDIMHPNPGMH-UHFFFAOYSA-N 0.000 description 1
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000001593 sorbitan monooleate Substances 0.000 description 1
- 235000011069 sorbitan monooleate Nutrition 0.000 description 1
- 229940035049 sorbitan monooleate Drugs 0.000 description 1
- 239000001587 sorbitan monostearate Substances 0.000 description 1
- 235000011076 sorbitan monostearate Nutrition 0.000 description 1
- 229940035048 sorbitan monostearate Drugs 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Description
【発明の詳細な説明】
本発明は各種材料、構造物などの非破壊検査、すなわち
超音波探傷または厚さ測定用の接触媒質に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a couplant for nondestructive testing of various materials, structures, etc., ie, ultrasonic flaw detection or thickness measurement.
さらに詳しくは、ポリビニルアルコールおよび可塑剤を
主成分とする、超音波透過性にすぐれかつ取扱い性の良
好な超音波探傷または厚さ測定用の接触媒質に関する。
非破壊検査の一種である超音波探傷法や超音波厚さ泗淀
法においては、被検査試料の表面より内部に向つて超音
波パルスを送り、界面あるいは傷、格子欠陥などからの
反射波を受け、これを電気信号にかえてブラウン管にう
つし出し、それによつて試料の厚さあるいは試料内部の
傷、欠陥の有無、位置、大きさなどを知ることができる
。More specifically, the present invention relates to a couplant for ultrasonic flaw detection or thickness measurement, which contains polyvinyl alcohol and a plasticizer as main components and has excellent ultrasonic transparency and ease of handling.
In the ultrasonic flaw detection method and the ultrasonic thickness detection method, which are a type of non-destructive testing, ultrasonic pulses are sent from the surface of the specimen to the inside to detect reflected waves from interfaces, scratches, lattice defects, etc. This is converted into an electrical signal and transmitted to a cathode ray tube, which allows us to determine the thickness of the sample, the presence or absence, location, and size of scratches and defects inside the sample.
従来は、超音波発振器の送波面および受波面と被検査試
料との間の空気間隙をなくし、送波の減衰量を小さくす
る、ために、油、グリセリン、水などの接触媒質を介在
させて測定を行なつていた。Conventionally, a couplant such as oil, glycerin, or water has been used to eliminate air gaps between the wave transmitting and receiving surfaces of an ultrasonic oscillator and the test sample and to reduce the amount of attenuation of the transmitted waves. was taking measurements.
しかしながら、これら媒質を使用するばあいは、測定後
被検査試料の表面に付着した媒質を拭き取る必要があり
、とくに油を用いるばあいには油がベトつき、それの完
全な除去には手数を要し、作業性がきわめてわるい。ま
たこれら媒質の除去が充分でないと、とくに水を用いた
ばあい金属表面にサビの発生を誘発するので、被検査面
が反応器、配管などの内面であるときは測定後媒質の完
全な除去が必須とされる。また水、油においては送波に
対する受波の減衰量が大きく、測定条件によつてはノイ
ズが無視できなくなり、測定誤差が大きく、測定条件の
幅が限定されることが多い。さらに油、グリセリン、水
は温度によりその粘度が一定であるため、とくに鋼管の
自動探傷などにおいては鋼管の上部に滴下したこれらの
媒質が鋼管の最下部まで均一に被膜として広がらず、測
定に支障が生ずることもしばしばである。そこで本発明
者は超音波透過性にすぐれかつ取扱い性の良好な超音波
探傷ないし厚さ測定用の接触媒質をうるべく鋭意研究を
重ねた結果、ポリビニルアルコールと可塑剤を主成分と
して含有する水性液をかかる媒質として用いるときは、
超音波透過性にすぐれ、取扱い性も良好であるというま
つたく新たな事実を見出し、本発明を完成するにいたつ
た。However, when these media are used, it is necessary to wipe off the media adhering to the surface of the test sample after measurement.Especially when oil is used, the oil becomes sticky and it takes time and effort to completely remove it. However, the workability is extremely poor. In addition, if these media are not removed sufficiently, rust may occur on the metal surface, especially if water is used, so if the surface to be inspected is the inner surface of a reactor, piping, etc., it is necessary to completely remove the medium after measurement. is required. Furthermore, in water and oil, the amount of attenuation of the received wave relative to the transmitted wave is large, and depending on the measurement conditions, noise cannot be ignored, measurement errors are large, and the range of measurement conditions is often limited. Furthermore, since the viscosity of oil, glycerin, and water is constant depending on the temperature, especially in automatic flaw detection of steel pipes, these media dropped on the top of the steel pipe do not spread as a uniform film to the bottom of the steel pipe, which interferes with measurement. often occurs. Therefore, the inventor of the present invention conducted intensive research to find a couplant for ultrasonic flaw detection or thickness measurement that has excellent ultrasonic permeability and ease of handling. When using a liquid as such a medium,
We have now discovered the new fact that it has excellent ultrasonic transparency and is easy to handle, leading us to complete the present invention.
すなわち、本発明の接触媒質は超音波透過性がすぐれて
いる。That is, the couplant of the present invention has excellent ultrasonic permeability.
このため送波の減衰量が小さく、ノイズに妨害されずに
広い測定条件下で検査が可能となる。また本発明の接触
媒質はポリビニルアルコールと可塑剤を主成分とするも
のであるため、強靭な皮膜を形成し、このものは破断な
どの惧れがなく容易に剥離することができる。したがつ
て検査後の接触媒質の除去作業がきわめて簡単である。
また本発明の接触媒質は水溶性であるので、作業現場で
被検査試料の材質、形状などに応じて適宜の濃度、すな
わち粘度に調整することができ、そのため常に均一な媒
質被膜を被検査試料表面にうることができる。さらに本
発明の接触媒質は無臭であり、皮膚に対する刺激もなく
、人体に対してまつたく無害であり、安心して用いるこ
とができる。本発明に用いるポリビニルアルコールとし
ては市販の水溶性ポリビニルアルコールがいずれも好適
に用いられる。Therefore, the amount of attenuation of the transmitted wave is small, and inspection can be performed under a wide range of measurement conditions without being disturbed by noise. Furthermore, since the couplant of the present invention is mainly composed of polyvinyl alcohol and a plasticizer, it forms a tough film that can be easily peeled off without fear of breakage. Therefore, removal of the couplant after inspection is extremely simple.
Furthermore, since the couplant of the present invention is water-soluble, it can be adjusted to an appropriate concentration, or viscosity, depending on the material, shape, etc. of the specimen to be inspected at the work site. Can get on the surface. Furthermore, the couplant of the present invention is odorless, does not irritate the skin, is completely harmless to the human body, and can be used with confidence. As the polyvinyl alcohol used in the present invention, any commercially available water-soluble polyvinyl alcohol can be suitably used.
本発明においてはポリビニルアルコールに加えて可塑剤
を用いる。In the present invention, a plasticizer is used in addition to polyvinyl alcohol.
この可塑剤は主として剥離が容易な掲靭なポリビニルア
ルコール皮膜を形成する役割をはたすものである。かか
る可塑剤としてはポリビニルアルコールに対する可塑効
果が充分でありかつ水溶性であればとくに制限されない
が、たとえばグリセリン、エチレングリコール、トリエ
チレングリコール、ポリエチレングリコールなどがあげ
られる。なお本発明においては、前記可塑剤と同様な可
塑効果を有する界面活性剤も同様に用いることができ、
本発明にいう可塑剤とはかかる界面活性剤をも含む概念
である。かかる界面活性剤としては、たとえばポリエチ
レングリコールオレイン酸エステル、ポリエチレングリ
コールラウリルエーテル、アルキルベンゼンスルホン酸
ナトリウム、ポリエチレングリコールアルキルアリール
エーテル、ポリエチレングリコールソルビタンモノオレ
ート、ラウリル硫酸ナトリウム、ポリエチレングリコー
ルアルキルエーテル、ポリエチレングリコールゾルビタ
ンモノラウレート、オレイン酸ナトリウム、ポリエチレ
ングリコールゾルビタンモノステアレートなどがあげら
れる。前記ポリビニルアルコールに対する可塑剤の割合
は通常ポリビニルアルコール１００部（重量部、以下同
様）に対して３０〜２００部が好ましい。可塑剤の割合
が前記範囲外のばあいは強靭な皮膜がえられがたく、除
去作業が困難となる。本発明の接触媒質を金属（たとえ
ば鉄）の検査に用いるばあいは、防錆剤を用いてもよい
。This plasticizer primarily serves to form a tough polyvinyl alcohol film that is easy to peel off. Such plasticizers are not particularly limited as long as they have a sufficient plasticizing effect on polyvinyl alcohol and are water-soluble, and include, for example, glycerin, ethylene glycol, triethylene glycol, polyethylene glycol, and the like. In addition, in the present invention, a surfactant having a plasticizing effect similar to that of the above-mentioned plasticizer can also be used,
The plasticizer referred to in the present invention is a concept that also includes such surfactants. Examples of such surfactants include polyethylene glycol oleate, polyethylene glycol lauryl ether, sodium alkylbenzene sulfonate, polyethylene glycol alkylaryl ether, polyethylene glycol sorbitan monooleate, sodium lauryl sulfate, polyethylene glycol alkyl ether, polyethylene glycol sorbitan mono Examples include laurate, sodium oleate, and polyethylene glycol sorbitan monostearate. The ratio of the plasticizer to the polyvinyl alcohol is usually preferably 30 to 200 parts per 100 parts (by weight, hereinafter the same) of the polyvinyl alcohol. If the proportion of the plasticizer is outside the above range, it will be difficult to form a tough film, making removal work difficult. When the couplant of the present invention is used for testing metals (eg iron), a rust inhibitor may be used.
かかる防錆剤は被検査試料の材質に応じて適宜選択され
るが、たとえばポリリン酸ナトリウム、リン酸ナトリウ
ム、ケイ酸ナトリウム、クロム酸ナトリウム、亜硫酸ナ
トリウム、ポリエチレングリコール、オクチルトリミチ
ルアンモニウムクロライド、テトラデシルトリメチルア
ンモニウムクロライド、ドデシルトリメチルアンモニウ
ムクロライドなどがあげられる。また本発明の接触媒質
においては保存性をよくするため防腐剤を用いてもよい
。Such rust inhibitors are appropriately selected depending on the material of the test sample, and examples include sodium polyphosphate, sodium phosphate, sodium silicate, sodium chromate, sodium sulfite, polyethylene glycol, octyltrimitylammonium chloride, and tetradecyl. Examples include trimethylammonium chloride and dodecyltrimethylammonium chloride. Further, in the couplant of the present invention, a preservative may be used to improve storage stability.
かかる防腐剤としては、たとえばデヒドロ酢酸、デヒド
ロ酢酸ナトリウム、ゾルピン酸、ゾルピン酸ナトリウム
、サリチル酸、安息香酸、安息香酸ナトリウム、ｐ−オ
キシ安息香酸エチル、ｐ−オキシ安息香酸プロビル、ｐ
−オキシ安息香酸ブチル、メチルナフトキノン、ニトロ
フラゾン、ニトロフリルアクリル酸アミドなどがあげら
れる。本発明の接触媒質は水にポリビニルアルコールお
よび可塑剤、さらに要すれば防錆剤、防腐剤などを溶解
することによつて製造される。Such preservatives include, for example, dehydroacetic acid, sodium dehydroacetate, zorpic acid, sodium zorbate, salicylic acid, benzoic acid, sodium benzoate, ethyl p-oxybenzoate, probyl p-oxybenzoate, p-oxybenzoate,
-butyl oxybenzoate, methylnaphthoquinone, nitrofurazone, nitrofuryl acrylic acid amide, etc. The couplant of the present invention is produced by dissolving polyvinyl alcohol, a plasticizer, and, if necessary, a rust inhibitor, preservative, etc. in water.
通常ポリビニルアルコールの濃度が５〜１５％（重量％
、以下同様）となるように調製される。粘度の高い接触
媒質を調製しておき、使用時に適宜希釈して用いてもよ
い。また本発明の接触媒質の皮膜形成能を損なわない範
囲内でデンプンなどの増粘剤を用いてもよい。使用時の
接触媒質の粘度は通常５００〜３００，０００ｃｐ１な
かんずく１，０００〜８，０００ｃｐの範囲が好ましい
。本発明の接触媒質を被検査試料表面に塗布するにあた
つては、刷毛、ヘラなどを用いて塗布するほか、噴霧に
よりあるいはスプレーガンを用いてもよく、さらにはエ
アゾールとして使用することもできる。Usually the concentration of polyvinyl alcohol is 5-15% (wt%)
, hereinafter the same). A highly viscous couplant may be prepared in advance and diluted appropriately before use. Further, a thickener such as starch may be used within a range that does not impair the film-forming ability of the couplant of the present invention. The viscosity of the couplant during use is usually in the range of 500 to 300,000 cp, preferably 1,000 to 8,000 cp. When applying the couplant of the present invention to the surface of a sample to be inspected, it can be applied using a brush, a spatula, etc., it can also be applied by spraying or a spray gun, and it can also be used as an aerosol. .
本発明の接触媒質は手動、半自動、自動の超音波探傷な
いし厚さ測定に有利に使用される。The couplant of the invention can be advantageously used in manual, semi-automatic or automatic ultrasonic flaw detection or thickness measurement.
つぎに実施例および試験例をあげて本発明の接触媒質を
説明する。実施例 １
重合度１，７００、ケン化度８８モル％のポリビニルア
ルコール８部を室温にて水１００部に攪拌しながら徐々
に添加した。Next, the couplant of the present invention will be explained with reference to Examples and Test Examples. Example 1 8 parts of polyvinyl alcohol having a degree of polymerization of 1,700 and a degree of saponification of 88 mol % were gradually added to 100 parts of water at room temperature with stirring.
溶解後グリセリン４部、ポリリン酸ナトリウム０６５部
およびデヒドロ酢酸ナトリウム０．１部を添加し、均一
になるまで攪拌して、接触媒質をえた。このものの粘度
は５００ｃｐであつた。実施例 ２
重合度１，５００、ケン化度９９モル％のポリビニルア
ルコール８部を７０℃にて水１００部に攪拌しながら徐
々に加えた。After dissolving, 4 parts of glycerin, 065 parts of sodium polyphosphate and 0.1 part of sodium dehydroacetate were added and stirred until homogeneous to obtain a couplant. The viscosity of this product was 500 cp. Example 2 8 parts of polyvinyl alcohol having a degree of polymerization of 1,500 and a degree of saponification of 99 mol% were gradually added to 100 parts of water at 70°C with stirring.
溶解後ポリエチレングリコール（このものは可塑剤とし
ても防錆剤としても作用する）４部およびゾルピン酸ナ
トリウム０．１部を添加し、均一になるまで撹拌して接
触媒質をえた。このものの粘度は２，０００ｃｐであつ
島実施例 ３グリセリンにかえてポリエチレングリコー
ルオレイン酸エステル４部を用いたほかは実施例１と同
様にして接触媒質をえた。After dissolving, 4 parts of polyethylene glycol (which acts both as a plasticizer and a rust inhibitor) and 0.1 part of sodium zorbate were added and stirred until homogeneous to obtain a couplant. The viscosity of this product was 2,000 cp. Atsushima Example 3 A couplant was prepared in the same manner as in Example 1, except that 4 parts of polyethylene glycol oleate was used instead of glycerin.
このものの粘度は１，０００ｃｐであつた。試験例
実施例１〜３でえた接触媒質をそれぞれ１５０ｍｍ×１
５０１ｍＸ１４．２ｍｍの鋼板（Ｓｓ−４１）および６
０ｍｍｘ６３ｍ７１Ｌ×６．３ｍ７！Ｌの鋳鉄板（ＦＣ
−４０）に塗布量５００ｇ／イで塗布し、超音波探傷器
（西独クラウド・クレーマ一社製ＵＳＩＰ−１１）で厚
さの測定を行ない、そのときの送波に対する受波の減衰
量（接触媒質としてグリセリンを用いたばあいを基準（
ゼロ）とした減衰量）を測定した。The viscosity of this product was 1,000 cp. Test Example The couplants obtained in Examples 1 to 3 were each 150 mm x 1.
501m x 14.2mm steel plate (Ss-41) and 6
0mmx63m71Lx6.3m7! L cast iron plate (FC
-40) at a coating weight of 500 g/A, and measured the thickness with an ultrasonic flaw detector (USIP-11, manufactured by Cloud Kramer, West Germany). Based on the case using glycerin as the medium (
The attenuation amount) was measured.
なお比較のために接触媒質として油（モーターオイノ（
ハ）および水を用いて前記と同様な実験を行なつた。結
果を次表に示す。For comparison, oil (motor oil) was used as a couplant.
An experiment similar to the above was conducted using c) and water. The results are shown in the table below.
前表から明らかなごとく、本発明の接触媒質を用いると
きは油および水を用いるばあいにくらべて送波に対する
受波の減衰量が小さいことがわかる。As is clear from the table above, when the couplant of the present invention is used, the amount of attenuation of the received wave relative to the transmitted wave is smaller than when oil and water are used.
前記測定完了後実施例１〜３の接触媒質を用いたものに
ついては、被検査試料上に形成された皮膜を剥離した。After the measurement was completed, the film formed on the test sample was peeled off for those using the couplants of Examples 1 to 3.
Claims (1)
する水性液からなる非破壊検査用接触媒質。 ２ ポリビニルアルコール１００重量部に対して可塑剤
を３０〜２００重量部含有する特許請求の範囲第１項記
載の接触媒質。[Claims] 1. A couplant for nondestructive testing consisting of an aqueous liquid containing polyvinyl alcohol and a plasticizer as main components. 2. The couplant according to claim 1, which contains 30 to 200 parts by weight of a plasticizer per 100 parts by weight of polyvinyl alcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7997678A JPS5920101B2 (en) | 1978-06-30 | 1978-06-30 | Couplant for non-destructive testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7997678A JPS5920101B2 (en) | 1978-06-30 | 1978-06-30 | Couplant for non-destructive testing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS557628A JPS557628A (en) | 1980-01-19 |
| JPS5920101B2 true JPS5920101B2 (en) | 1984-05-10 |
Family
ID=13705346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7997678A Expired JPS5920101B2 (en) | 1978-06-30 | 1978-06-30 | Couplant for non-destructive testing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5920101B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62252253A (en) * | 1986-04-25 | 1987-11-04 | Eisuke Imanaga | Sound recording and reproducing device for automatic answering telephone set |
-
1978
- 1978-06-30 JP JP7997678A patent/JPS5920101B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS557628A (en) | 1980-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4269068A (en) | Ultrasonic couplant compositions and method for employing same | |
| US4365516A (en) | Ultrasonic couplant gel compositions and method for employing same | |
| US4244693A (en) | Method and composition for testing for the presence of an alkali metal | |
| Hilloulin et al. | Monitoring of autogenous crack healing in cementitious materials by the nonlinear modulation of ultrasonic coda waves, 3D microscopy and X-ray microtomography | |
| US3826127A (en) | Composition for ultrasonic inspection of objects and method for employing same | |
| CN107022161A (en) | It is a kind of for hydrogel material of ultrasonic conducting and preparation method thereof | |
| JPS5920101B2 (en) | Couplant for non-destructive testing | |
| EP0091301B1 (en) | Rust removal process | |
| JPS634592B2 (en) | ||
| Sachse | Ultrasonic spectroscopy of a fluid‐filled cavity in an elastic solid | |
| Sarpün et al. | Mean grain size determination in marbles by ultrasonic velocity techniques | |
| JPS6197547A (en) | Leakage inspection | |
| JPH0557543B2 (en) | ||
| CN106645431A (en) | Industrial couplant used for metal defect detection, and preparation method thereof | |
| JPS61105459A (en) | Contact medium for non-destructive inspection | |
| US3939101A (en) | Composition for ultrasonic inspection of objects and method for employing same | |
| US4049568A (en) | Non-dripping heat resistant dye penetrant | |
| JPH027027B2 (en) | ||
| JPH1026572A (en) | Agent and method for inspection of bubble leak | |
| JPS62276456A (en) | Coupler for ultrasonic transducer | |
| JPH03160363A (en) | Contact medium for non-destructive inspection | |
| JP2971098B2 (en) | Coupling medium for ultrasonic testing | |
| JP3728307B2 (en) | Contact medium for ultrasonic nondestructive inspection | |
| JPS6133125B2 (en) | ||
| RU2786346C1 (en) | Contact gel for ultrasonic testing |