Fluorescent penetrant detection agent, preparation method thereof and application of fluorescent penetrant detection agent in workpiece nondestructive testing

Abstract

The invention discloses a fluorescent penetrant detection agent, a preparation method thereof and application of the fluorescent penetrant detection agent in nondestructive detection of workpieces. The fluorescent penetrant detection agent comprises berberine compounds and a solvent. The fluorescent penetrant detection agent disclosed by the invention has the advantages of environment friendliness, no toxicity, low cost, sensitivity, simplicity, convenience and the like; the used fluorescent penetrant detection agent can be of a water-based type, so that the use of an organic solvent is avoided, the problem of wastewater treatment in fluorescent penetrant detection is simplified, and the method has environmental protection benefits. The berberine compound has the characteristic of no toxicity, so that the berberine compound does not cause harm to the health of workers performing nondestructive testing.

Description

Technical Field

[0001] The invention belongs to the technical field of nondestructive monitoring, and in particular relates to a fluorescent penetrant detection agent, a preparation method thereof and application thereof in nondestructive detection of workpieces. Background Art

[0002] As a non-destructive testing method, penetrant testing uses capillary phenomena to check for open defects on the surface of materials. Its test results are not limited by the organizational structure and chemical composition of the material. Fluorescent penetrant testing is a type of penetrant testing method, which has the advantages of simple operation, batch operation, and high sensitivity. However, traditional fluorescent penetrants are mainly oil-based, containing organic solvents such as petroleum hydrocarbons, lipids, and nonylphenol polyethers. If not handled properly, they can easily pollute the environment. In addition, traditional fluorescent penetrants have certain toxicity. For example, fluorescent penetrant LV-6A is carcinogenic. Fluorescent penetrant RT 490 yellow-green can cause strong allergies. This has an adverse effect on the health of the testers. At present, the commercially available water-based fluorescent penetrants include American Magnetic Flux ZL-420, Italian EliteNDT K81B2, and LUYOR-6220, but their prices are relatively high. Therefore, it is of great significance to develop non-toxic, biodegradable, environmentally friendly, and low-cost fluorescent penetrant detection agents. Summary of the invention

[0003] The main purpose of the present invention is to provide a fluorescent penetrant detection agent, a preparation method thereof and use thereof in non-destructive testing of workpieces, so as to overcome the deficiencies of the prior art.

[0004] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention includes: An embodiment of the present invention provides a fluorescent penetrant detection agent, which includes: a berberine compound and a solvent.

[0005] The present invention also provides a method for preparing the aforementioned fluorescent penetrant detection agent, which comprises: The berberine compound is mixed with a solvent to prepare a fluorescent penetrant detection agent.

[0006] The embodiment of the present invention also provides the use of the aforementioned fluorescent penetrant detection agent in non-destructive testing of workpieces.

[0007] The embodiment of the present invention also provides a method for nondestructive testing of workpieces, which includes: applying the aforementioned fluorescent penetrant testing agent to the surface of the workpiece to be tested, then treating it with ultraviolet light, and determining whether the workpiece to be tested is damaged by observing the fluorescence.

[0008] Compared with the prior art, the present invention has the following beneficial effects: (1) The fluorescent penetrant detection agent of the present invention has the advantages of being environmentally friendly, non-toxic, low-cost, sensitive, and simple; since the fluorescent penetrant detection agent used can be water-based, the use of organic solvents is avoided, thereby simplifying the problem of fluorescent penetrant detection wastewater treatment and having environmental benefits; since berberine itself is non-toxic, it will not cause harm to the health of workers performing non-destructive testing; (2) The present invention uses berberine and its derivative solutions as fluorescent penetrants for non-destructive testing for the first time, which has the advantages of being environmentally friendly, non-toxic, low cost, sensitive, and simple. It can display the microscopic morphology of defects, and the test results can be displayed visually, with a magnifying glass, a projector, a microscope, etc. It is suitable for large-scale industrial production and does not require high technical skills of the inspectors. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0010] Figure 1 is a morphology diagram of the workpiece defect under ultraviolet light in Example 1 of the present invention; Figure 2 This is a fluorescence image of the working solution in Example 1 of the present invention. DETAILED DESCRIPTION

[0011] In view of the defects of the prior art, the inventor of this case has proposed the technical solution of the present invention after long-term research and extensive practice. The technical solution of the present invention will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0012] Specifically, as one aspect of the technical solution of the present invention, a fluorescent penetrant detection agent involved therein includes: a berberine compound and a solvent.

[0013] In some preferred embodiments, the berberine compound is dihydroberberine.

[0014] Furthermore, the concentration of dihydroberberine in the fluorescent penetrant detection agent is 100 μmol / L~10 mmol / L.

[0015] In some preferred embodiments, the solvent includes any one or more combinations of water, ethanol, methanol, dimethyl sulfoxide, dichloromethane, chloroform, tetrahydrofuran, acetone, and acetonitrile, but is not limited thereto.

[0016] Furthermore, the solvent is water.

[0017] The fluorescent penetrant detection agent of the present invention can be applied to the fields of metals, non-metals, organisms, etc.

[0018] Another aspect of the embodiments of the present invention further provides a method for preparing the aforementioned fluorescent penetrant detection agent, which comprises: The berberine compound is mixed with a solvent to prepare a fluorescent penetrant detection agent.

[0019] Another aspect of the embodiments of the present invention further provides the use of the aforementioned fluorescent penetrant detection agent in non-destructive testing of workpieces.

[0020] Another aspect of an embodiment of the present invention further provides a method for nondestructive testing of workpieces, which includes: applying the aforementioned fluorescent penetrant testing agent to the surface of the workpiece to be tested, then treating it with ultraviolet light, and determining whether the workpiece to be tested is damaged by observing the fluorescence.

[0021] In some preferred embodiments, the method specifically includes: cleaning the workpiece to be tested, then applying the fluorescent penetrant detection agent to the surface of the workpiece to be tested by any one of spraying, dipping, and brushing, and evaporating the solvent in the fluorescent penetrant detection agent after 5 to 15 minutes, and then treating it with ultraviolet light, and determining whether the workpiece to be tested is damaged by observing the fluorescence.

[0022] In some preferred embodiments, the workpiece comprises a metal, a non-metal, or a biological object.

[0023] In some preferred embodiments, the method for nondestructive testing of workpieces comprises: dissolving berberine compound powder in water or other solvents to prepare a stock solution; then diluting the solution to prepare a working solution; applying the working solution to the surface of the workpiece; removing the remaining working solution on the surface of the workpiece after a certain period of time; and observing the workpiece under an ultraviolet lamp.

[0024] In some preferred embodiments, the method for nondestructive testing of workpieces comprises: using ethanol or other solvents to prepare dihydroberberine powder into a working solution of 100 μmol / L to 10 mmol / L. Pre-clean the surface of the workpiece. Apply the berberine or its derivative working solution to the surface of the workpiece by spraying, dipping, or brushing. The berberine or its derivative working solution will gradually penetrate into the defects. After waiting for 5-15 minutes, wipe off the excess working solution with a lint-free paper towel or cloth, or dry it with a hair dryer or oven. The working solution will precipitate solid powder at the defects of the workpiece, and emit strong fluorescence under ultraviolet light excitation. Under the irradiation of ultraviolet light, observe the morphology of the defects presented by the fluorescence of dihydroberberine visually or with a magnifying glass or a projector or a microscope.

[0025] In some more specific embodiments, the method for nondestructive testing of a workpiece comprises the following steps: (1) The concentration of dihydroberberine in the working solution is 100 μmol / L to 10 mmol / L; (2) The workpiece surface is cleaned in advance; (3) The methods of applying the working fluid include spraying, dipping and brushing; (4) The working fluid will gradually penetrate into the surface opening defects; (5) The working fluid acts on the workpiece surface for 5-15 minutes; (6) Wipe off the remaining working fluid with a lint-free paper towel or cloth, or dry it with a hair dryer or oven; (7) After the working liquid solvent remaining in the defect evaporates, the solute forms a powder and precipitates, which emits yellow-green fluorescence under ultraviolet excitation.

[0026] (8) The ultraviolet light emitted by the UV lamp excites dihydroberberine to produce yellow-green fluorescence.

[0027] (9) The morphology of defects can be observed visually or with a magnifying glass, a projector, or under a microscope, as shown by the fluorescence emitted by dihydroberberine when excited by ultraviolet light.

[0028] The technical solution of the present invention is further described in detail below in conjunction with several preferred embodiments and drawings. This embodiment is implemented on the premise of the technical solution of the invention, and a detailed implementation method and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0029] Unless otherwise specified, the experimental materials used in the following examples can be purchased from conventional biochemical reagent companies.

[0030] Example 1 Use water to prepare a 100 μmol / L working solution with dihydroberberine powder, apply the working solution to the workpiece surface by brushing, wait for 10 minutes and wipe off the excess working solution with a lint-free paper towel or cloth, and observe the morphology of the defect presented by fluorescence under ultraviolet light with the naked eye or a magnifying glass or projector or microscope. The morphology of the workpiece defect cannot be clearly seen under visible light, and the morphology of the workpiece defect under ultraviolet light is as follows: Figure 1 shown.

[0031] The fluorescence image of the working solution in this embodiment is as follows Figure 2 shown.

[0032] Example 2 Dihydroberberine powder was prepared into a 100 μmol / L working solution using ethanol, and the working solution was applied to the surface of the workpiece by brushing. After waiting for 15 minutes, the excess working solution was wiped off with a lint-free paper towel or cloth, and the morphology of the defect presented by fluorescence was observed visually or with a magnifying glass or projector or microscope under the irradiation of ultraviolet light. The workpiece defect showed the same morphology as that of Example 1 under ultraviolet light.

[0033] Example 3 Dihydroberberine powder was prepared into a 1 mmol / L working solution using ethanol, and the working solution was applied to the surface of the workpiece by brushing. After waiting for 5 minutes, the excess working solution was wiped off with a lint-free paper towel or cloth. Under the irradiation of ultraviolet light, the morphology of the defect presented by fluorescence was observed visually or with a magnifying glass or projector or microscope. The morphology of the workpiece defect cannot be clearly seen under visible light, and the workpiece defect presents the same morphology as Example 1 under ultraviolet light.

[0034] Comparative Example 1 Same as Example 1, except that the working fluid does not include dihydroberberine, and the workpiece defects are invisible under ultraviolet light.

[0035] In addition, the inventors of this case also referred to the aforementioned embodiments and conducted experiments with other raw materials, process operations, and process conditions described in this specification, and obtained relatively ideal results.

[0036] It should be understood that the technical solution of the present invention is not limited to the above-mentioned specific implementation cases. Any technical deformation made according to the technical solution of the present invention without departing from the scope of protection of the purpose of the present invention and the claims shall fall within the protection scope of the present invention.

Claims

1. A fluorescent penetrant detection agent, characterized in that: include: Berberine compounds and solvents.

2. The fluorescent penetrant detection agent according to claim 1, characterized in that: The berberine compounds include dihydroberberine.

3. The fluorescent penetrant detection agent according to claim 2, characterized in that: The concentration of dihydroberberine in the fluorescent penetrant detection agent is 100 μmol / L-10 mmol / L.

4. The fluorescent penetrant detection agent according to claim 1, characterized in that: The solvent includes any one or more combinations of water, ethanol, methanol, dimethyl sulfoxide, dichloromethane, chloroform, tetrahydrofuran, acetone, and acetonitrile.

5. The fluorescent penetrant detection agent according to claim 4, characterized in that: The solvent includes water.

6. The method for preparing the fluorescent penetrant detection agent according to any one of claims 1 to 5, characterized in that: include: The berberine compound is mixed with a solvent to prepare a fluorescent penetrant detection agent.

7. Use of the fluorescent penetrant detection agent according to any one of claims 1 to 5 in non-destructive testing of workpieces.

8. A method for nondestructive testing of a workpiece, characterized in that: include: The fluorescent penetrant detection agent according to any one of claims 1 to 5 is applied to the surface of the workpiece to be tested, and then treated with ultraviolet irradiation, and the fluorescence is observed to determine whether the workpiece to be tested is damaged.

9. The method according to claim 8, characterized in that Specifically include: The workpiece to be tested is cleaned, and then the fluorescent penetrant detection agent is applied to the surface of the workpiece to be tested by any one of spraying, dipping, and brushing. After 5 to 15 minutes, the solvent in the fluorescent penetrant detection agent is evaporated, and then ultraviolet irradiation treatment is used. By observing the fluorescence, it is determined whether the workpiece to be tested is damaged.

10. The method according to claim 8, characterized in that: The workpiece includes metal, non-metal or biological body.

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