CN108444958B - Nondestructive flaw detection aerosol - Google Patents
Nondestructive flaw detection aerosol Download PDFInfo
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- CN108444958B CN108444958B CN201810127158.3A CN201810127158A CN108444958B CN 108444958 B CN108444958 B CN 108444958B CN 201810127158 A CN201810127158 A CN 201810127158A CN 108444958 B CN108444958 B CN 108444958B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6402—Atomic fluorescence; Laser induced fluorescence
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/91—Investigating the presence of flaws or contamination using penetration of dyes, e.g. fluorescent ink
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Abstract
The invention relates to a nondestructive inspection aerosol. The nondestructive inspection aerosol comprises the following raw materials in parts by weight: 1-1.5 parts of nanoshell polymer, 0.5-0.8 part of cationic cellulose, 0.01-0.02 part of plasticizer, 0.01-0.02 part of surfactant, 0.01-0.015 part of penetrating agent, 0.005-0.008 part of wetting agent, 0.01-0.02 part of fluorescent yellow 3G, 0.01-0.02 part of fluorescent red Gg, 0.1-0.2 part of nano titanium dioxide, 0.05-0.06 part of nano silver, 2-3 parts of deionized water, 20-30 parts of ethanol, 30-40 parts of propane and butane and 35-45 parts of hydrofluoroalkane. Compared with the prior art, the nondestructive inspection aerosol provided by the invention has the advantages that the nondestructive inspection aerosol is provided with the specific raw material components and the proportion, the fluorescent dye can emit visible light after absorbing illumination, the detection of the microcracks on the surface of the workpiece is realized, and compared with the existing product, the nondestructive inspection aerosol provided by the invention is not required to be combined with other products for use, so that the nondestructive inspection aerosol is novel and unique in use mode and is more convenient to use.
Description
Technical Field
The invention relates to the field of aerosols, in particular to a nondestructive inspection aerosol.
Background
The nondestructive inspection is a method for examining and determining the structure, properties, state, types, shapes, properties, quantity, size, positions and changes of defects in and on the surface of a workpiece by physical and/or chemical means by utilizing optical, electrical, magnetic, thermal and other reactions caused by the defects in or on the surface of an object to be inspected on the premise of not damaging the object to be inspected or not influencing the service performance of the object to be inspected. Nondestructive inspection reflects the industrial development level of a country to a certain extent. The current mainstream nondestructive inspection technology mainly comprises four types, namely ray inspection, ultrasonic inspection, magnetic powder inspection and liquid penetration inspection. Other non-destructive inspection technologies include acoustic emission inspection, eddy current inspection, magnetic flux leakage inspection, thermal imaging/infrared, leakage test, alternating current field measurement technology, ultrasonic diffraction time difference method, far field test detection method, and the like.
The nondestructive inspection agent is a common and effective inspection product in the technical field of nondestructive inspection. The method has the advantages of rapid detection, sensitive display, good intuition, good repeatability and the like for detecting some dangerous defects (such as surface micro defects of fatigue cracks, welding cracks, grinding cracks, stress corrosion cracks, quenching cracks and the like) which endanger the service life and the use safety of products, and has been widely applied.
The existing flaw detector product generally consists of a coloring agent and a color developing agent, is used in a matching way, and comprises a coloring step and a color developing step during detection. The coloring step is as follows: firstly, a coloring agent containing dye is sprayed or coated on the surface of a workpiece to be detected, and then the workpiece is wiped clean by a clean rag. The color development step is as follows: and after coloring is finished, spraying/coating a color developing agent on the surface of the workpiece, sucking the dye remained in the microcracks on the surface of the workpiece by an adsorbing material in the color developing agent, displaying the color, and finishing flaw detection. The Chinese invention patent document with the publication number of CN100443888C discloses an anti-rust water-based flaw detector, which comprises a permeable coloring liquid and a permeable color developing liquid. The permeable coloring liquid comprises the following raw material components in parts by weight: 5-30 parts of a penetrating agent; 3-9 parts of a dye; 0.5-10 parts of fatty acid triethanolamine; 0.01-1 part of benzotriazole; 0.1-2 parts of polyoxyethylene alkylphenol ether. The raw material components of the penetration color development liquid are calculated according to the parts by weight: 5-10 parts of an adhesive; 3-7 parts of an adsorbent; 0.5-2 parts of fatty acid triethanolamine; 0.1-2 parts of polyoxyethylene alkylphenol ether. The main disadvantage of the flaw detector products is that the coloring agent and the color developing agent are required to be matched for use, and the flaw detector products are inconvenient to use. Aiming at the problem that a nondestructive flaw detector product is inconvenient to use, the Chinese patent publication with the publication number of CN 102585761B discloses a colorless and transparent penetrating agent, which consists of 30-60 wt% of polyol, 8-15 wt% of surfactant and the balance of dissolving agent, wherein the penetrating agent utilizes the capillary phenomenon generated by rapid penetration of penetrating fluid, and can present transparent liquid to people by utilizing the principle of light refraction, namely, the transparent liquid can be distinguished from a detected object without utilizing other scientific tools. Thus, the process of nondestructive inspection is simplified. However, since the penetrant is a colorless transparent liquid, when the penetrant is used for imaging, the contrast between the overflow generated on the surface of the object to be detected and the color ratio of some objects to be detected is not obvious, and the flaw detection result is inaccurate. To this end, chinese patent publication No. CN 105738378A discloses a multifunctional self-developing coloring penetrant, which is a colorless transparent penetrant, and is added with natural food dye in a solvent, so that it can form a strong color difference with the substance to be detected during detection, and improve the accuracy of the detection result. However, neither the colorless transparent penetrant of CN 102585761B nor the multifunctional self-developing coloring penetrant of CN 105738378A can show micro cracks on the surface of an object for a long time, and the penetrant is marked for repairing after the cracks are found; and when flaw detection is carried out, the penetration time after the paint is coated on the surface of a detected object is not more than 1 min. It can be seen that when the two flaw detection agents are used for detecting flaws on the surface of a measured object, a person needs to observe the surface of the measured object in a short time to determine whether microcracks exist on the surface of the measured object, and once the person misses a specific short time period, the person cannot observe the existence of the microcracks, so that detection omission may occur.
Disclosure of Invention
The invention aims to provide a nondestructive inspection aerosol. Compared with the prior art, the nondestructive inspection aerosol has completely different technical routes, can realize the detection of the microcracks on the metal surface by using the nondestructive inspection aerosol alone, and has novel use form and more convenient use. Correspondingly, the invention also provides a method for preparing the nondestructive inspection aerosol suitable for large-scale production.
For a flaw detection aerosol: the nondestructive inspection aerosol comprises the following raw materials in parts by weight: 1-1.5 parts of nano chitosan, 0.5-0.8 part of cationic cellulose, 0.01-0.02 part of plasticizer, 0.01-0.02 part of surfactant, 0.01-0.015 part of penetrant, 0.005-0.008 part of wetting agent, 0.01-0.02 part of fluorescein 3G, 0.01-0.02 part of fluorescent red Gg, 0.1-0.2 part of nano titanium dioxide, 0.05-0.06 part of nano silver, 2-3 parts of deionized water, 20-30 parts of ethanol, 30-40 parts of propane and butane and 35-45 parts of hydrofluoroalkane.
As optimization, the nondestructive inspection aerosol comprises the following raw material components in parts by weight: 1.2-1.5 parts of nano chitosan, 0.5-0.6 part of cationic cellulose, 0.015-0.02 part of plasticizer, 0.015-0.02 part of surfactant, 0.012-0.015 part of penetrant, 0.006-0.007 part of wetting agent, 0.01-0.015 part of fluorescein 3G, 0.015-0.02 part of fluorescent red Gg, 0.17-0.2 part of nano titanium dioxide, 0.05-0.06 part of nano silver, 2.5-3 parts of deionized water, 25-30 parts of ethanol, 35-40 parts of propane and butane and 40-45 parts of hydrofluoroalkane.
Preferably, in the nondestructive inspection aerosol, the plasticizer is dimethyl phthalate.
Preferably, in the nondestructive inspection aerosol, the surfactant has an HLB value of 10 to 15.
Preferably, in the nondestructive inspection aerosol, the penetrant is fatty alcohol-polyoxyethylene ether.
Preferably, in the nondestructive inspection aerosol, the wetting agent is a silanol nonionic surfactant.
As optimization, the nondestructive inspection aerosol comprises the following raw material components in parts by weight: 1.2 parts of nano chitosan, 0.5 part of cationic cellulose, 0.02 part of dimethyl phthalate, 0.017 part of isomeric dodecyl polyoxyethylene ether, 0.014 part of fatty alcohol polyoxyethylene ether, 0.007 part of silanol nonionic surfactant, 0.01 part of fluorescein 3G, 0.02 part of fluorescent red Gg, 0.2 part of nano titanium dioxide, 0.05 part of nano silver, 2.5 parts of deionized water, 30 parts of ethanol, 40 parts of propane and butane and 45 parts of hydrofluoroalkane.
Compared with the prior art, the nondestructive inspection aerosol has specific raw material components and proportion, the composite material formed by the fluorescent dye, the nano silver and the nano titanium dioxide is adsorbed on the nano chitosan-cationic cellulose chelate, the plasma resonance phenomenon on the surface of the composite material is obviously enhanced under the action of the nano silver micro-particles loaded on the nano titanium dioxide, the absorption capacity of the fluorescent dye to light is improved, the inspection aerosol can rapidly diffuse after being sprayed on the surface of a workpiece to be detected and permeate into the micro-cracks on the surface of the workpiece, after the aerosol on the surface of the workpiece is wiped off, the aerosol remained in the micro-cracks can be rapidly dried and solidified to form colloid, the fluorescent dye in the colloid emits visible light after absorbing light irradiation, the position of the micro-cracks on the surface is displayed, and the detection of the micro-cracks on the surface of the workpiece is realized, compared with the existing flaw detection agent product, the flaw detection aerosol provided by the invention does not need to be matched with other products for use, is novel and unique in use mode, is more convenient to use, and is more suitable for industrial application. In addition, researches show that the detection sensitivity of the flaw detection aerosol can reach 200nm, and the flaw detection aerosol has the advantage of high detection sensitivity.
For the preparation method: the method for preparing the nondestructive inspection aerosol comprises the following steps:
a. mixing fluorescein 3G, fluorescein Gg, nano titanium dioxide, nano silver and deionized water to prepare a material A;
b. adding ethanol, nano chitosan, cationic cellulose, a plasticizer, a surfactant, a penetrating agent and a wetting agent into the material A in sequence to prepare a material B;
c. and (3) filling the material B into an aerosol can, assembling an aerosol valve, and then sequentially filling propane and butane and hydrofluoroalkane to obtain the product.
The method is suitable for large-scale production and is beneficial to industrial popularization.
Detailed Description
The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention. In the following examples, the amount used was 1 part per 100 g.
Experimental studies show that, in the invention:
1) the nano chitosan can be chelated with the cationic cellulose, so that the adsorption capacity of the nano chitosan and the cationic cellulose is enhanced, the fluorescent dye is firmly locked, the fluorescent dye is prevented from being lost, and the crack position can be displayed for a long time.
2) The fluorescent dye, the nano silver and the nano titanium dioxide form a composite material, and the nano silver is loaded on the nano titanium dioxide to play a role in enhancing the plasma resonance phenomenon on the surface of the composite material, so that the visible light absorption capacity of the fluorescent dye is improved, and the product has higher detection sensitivity.
3) The specific dosage of the fluorescent yellow 3G and the fluorescent red Gg are combined for use, so that the missing detection probability is reduced.
4) The plasticizer plays a role in accelerating curing, ensures the rapidity of detection, and preferably selects dimethyl phthalate.
5) In the invention, the surfactant mainly plays a role in stabilizing a dispersion system, thereby ensuring that the product has a longer shelf life. Research tests show that when the HLB value of the surfactant is between 10 and 15, the flaw detection aerosol has stable properties, long quality guarantee period, good wettability and high diffusion speed, so that the probability of missed detection of micro-cracks on the surface of a workpiece is low; in the invention, the surfactant is preferably isomeric dodecyl polyoxyethylene ether; in the following examples, the surfactant was the isomeric polyoxyethylene lauryl ether IP1007 (HLB value of about 13 by water number method) produced by New Yoghurt, Inc.
6) In the invention, the penetrant and the wetting agent need to ensure that the flaw detection aerosol can be rapidly diffused after being sprayed on the surface of the workpiece, and rapidly permeate into the microcracks on the surface of the workpiece, so that the missed detection is avoided; tests show that the penetrating agent is preferably fatty alcohol-polyoxyethylene ether, and the wetting agent is preferably a silanol nonionic surfactant. The silanol-based nonionic surfactant used in the following examples was GSK-588.
7) In the invention, the propellant is the combination of propane and butane and hydrofluoroalkane, so that the flaw detection aerosol product has better wettability and permeability, and the hydrofluoroalkane has stronger flame-retardant effect, so that the product is safer and more environment-friendly, and the workpiece can be detected in a high-temperature occasion of 60 ℃ under the condition of ensuring safety.
Example 1
1) Preparation of Material A
0.01 part of fluorescein 3G, 0.02 part of fluorescein Gg, 0.2 part of nano titanium dioxide, 0.05 part of nano silver and 2.5 parts of deionized water are taken, mixed and stirred uniformly to prepare a material A for later use.
2) Preparation of Material B
30 parts of ethanol, 1.2 parts of nano chitosan, 0.5 part of cationic cellulose, 0.02 part of dimethyl phthalate (plasticizer), 0.017 part of isomeric dodecyl alcohol polyoxyethylene ether (surfactant), 0.014 part of fatty alcohol polyoxyethylene ether (penetrating agent) and 0.007 part of silanol nonionic surfactant (wetting agent) are sequentially added into the prepared material A, and the mixture is uniformly stirred to prepare a material B for later use.
3) Preparation of flaw detection agent
And (3) subpackaging the prepared material B into aerosol cans in equal amount, assembling an aerosol valve, and sequentially subpackaging 40 parts of propane and butane and 45 parts of hydrofluoroalkane in equal amount into the aerosol cans to obtain the product (flaw detection agent).
Example 2
In this example, the formulation of each raw material component is shown in table 1, which is different from example 1.
TABLE 1
| Components | Dosage (parts) |
| Nano chitosan | 1 |
| Cationic cellulose | 0.5 |
| Phthalic acid dimethyl esterEsters | 0.01 |
| Isomeric dodecyl alcohol polyoxyethylene ether | 0.01 |
| Fatty alcohol polyoxyethylene ether | 0.01 |
| Silicones non-ionic surfactant | 0.005 |
| Fluorescent yellow 3G | 0.01 |
| Fluorescent Red Gg | 0.01 |
| Nano titanium dioxide | 0.1 |
| Nano silver | 0.05 |
| Deionized water | 2 |
| Ethanol | 20 |
| Propane and butane | 30 |
| Hydrofluoroalkanes | 35 |
Example 3
In this example, the ratio of each raw material component required for preparing a flaw detection aerosol is as shown in table 2, which is different from example 1.
TABLE 2
| Components | Dosage (parts) |
| Nano chitosan | 1.5 |
| Cationic cellulose | 0.8 |
| Phthalic acid dimethyl ester | 0.02 |
| Isomeric dodecyl alcohol polyoxyethylene ether | 0.02 |
| Fatty alcohol polyoxyethylene ether | 0.015 |
| Silicones non-ionic surfactant | 0.008 |
| Fluorescent yellow 3G | 0.02 |
| Fluorescent Red Gg | 0.02 |
| Nano titanium dioxide | 0.2 |
| Nano silver | 0.06 |
| Deionized water | 3 |
| Ethanol | 30 |
| Propane and butane | 40 |
| Hydrofluoroalkanes | 45 |
Tests show that the flaw detection aerosol prepared in the specific examples 1-3 can achieve the purpose of the invention and achieve the beneficial effects of the invention. Wherein, the detection sensitivity of the flaw detection aerosol prepared in the specific embodiment 1 is the highest and can reach 150 nm.
In the preparation method, the step 1) is to better compound the fluorescent dye, the nano silver and the nano titanium dioxide. During production, the step 1) and the step 2) can be combined, and the raw material components in the step 1) and the step 2) can be directly and uniformly mixed according to the dosage ratio. Tests show that the flaw detection aerosol prepared by the method can emit stronger visible light, has stronger imaging capability and thus has lower probability of missed detection.
The above general description of the invention and the description of the specific embodiments thereof referred to in this application should not be construed as limiting the technical solutions of the invention. Those skilled in the art can add, reduce or combine the technical features disclosed in the general description and/or the embodiments to form other technical solutions within the protection scope of the present application without departing from the present disclosure.
Claims (7)
1. The nondestructive inspection aerosol is characterized by comprising the following raw material components in parts by weight:
the preparation method of the nondestructive inspection aerosol comprises the following steps:
a. mixing fluorescein 3G, fluorescein Gg, nano titanium dioxide, nano silver and deionized water to prepare a material A;
b. adding ethanol, nano chitosan, cationic cellulose, a plasticizer, a surfactant, a penetrating agent and a wetting agent into the material A in sequence to prepare a material B;
c. and (3) filling the material B into an aerosol can, assembling an aerosol valve, and then sequentially filling propane and butane and hydrofluoroalkane to obtain the product.
2. The aerosol for nondestructive inspection according to claim 1, characterized in that the aerosol comprises the following raw materials in parts by weight:
3. the nondestructive inspection aerosol according to claim 1 or 2, characterized in that: the plasticizer is dimethyl phthalate.
4. The nondestructive inspection aerosol according to claim 1 or 2, characterized in that: the HLB value of the surfactant is 10-15.
5. The nondestructive inspection aerosol according to claim 1 or 2, characterized in that: the penetrating agent is fatty alcohol-polyoxyethylene ether.
6. The nondestructive inspection aerosol according to claim 1 or 2, characterized in that: the wetting agent is a silanol nonionic surfactant.
7. The aerosol for nondestructive inspection according to claim 1 or 2, characterized in that the raw material components are as follows by weight: 1.2 parts of nano chitosan, 0.5 part of cationic cellulose, 0.02 part of dimethyl phthalate, 0.017 part of isomeric dodecyl polyoxyethylene ether, 0.014 part of fatty alcohol polyoxyethylene ether, 0.007 part of silanol nonionic surfactant, 0.01 part of fluorescein 3G, 0.02 part of fluorescent red Gg, 0.2 part of nano titanium dioxide, 0.05 part of nano silver, 2.5 parts of deionized water, 30 parts of ethanol, 40 parts of propane and butane and 45 parts of hydrofluoroalkane.
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| CN113686889A (en) * | 2021-06-07 | 2021-11-23 | 吴江市宏达探伤器材有限公司 | Developer for detecting defects of oil-carrying container |
| CN116106325B (en) * | 2023-01-05 | 2023-10-13 | 博建建工集团有限公司 | Crack detection method and device, electronic equipment and storage medium |
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