CN-122016766-A - Glass solidification body detection method based on shear thickening nano-enhanced LIBS

Abstract

The invention relates to a glass curing body detection method based on shear thickening nano-reinforced LIBS, which belongs to the field of glass curing body detection, wherein a nano-particle solution and a high polymer material are prepared into shear thickening gel according to a preset proportion, a proper amount of the shear thickening gel is uniformly smeared on the surface of a glass curing body, a shear thickening gel coating is formed after standing, and LIBS detection is carried out on the glass curing body covered with the shear thickening gel coating to obtain element content and distribution information of the glass curing body. The solid-like characteristic of the shear thickening gel generated when the gel is impacted by laser is utilized to disperse laser impact force, the glass solidified body is protected from being damaged by the laser impact, and the nano particles in the process of the action of laser and nano particles in the gel are utilized to conduct electronic oscillation and surface plasmon resonance, so that the laser-induced plasma radiation spectrum intensity is improved. Therefore, in the process of detecting the glass solidified body element by the LIBS, the detection safety and sensitivity are synchronously improved.

Inventors

• WANG YUANHANG
• CHENG HONGZHI
• WANG ZHAO
• TIAN YUWEI
• GAO ZHIXING
• HE CHENGANG

Assignees

• 中国原子能科学研究院

Dates

Publication Date

20260512

Application Date

20260112

Claims (8)

1. 1. The glass solidification body detection method based on the shear thickening nano-reinforced LIBS is characterized by comprising the following steps of: s1, preparing a nano particle solution and a high polymer material into a shear thickening gel according to a preset proportion; S2, uniformly coating a proper amount of shear thickening gel on the surface of the glass solidified body, and standing to form a shear thickening gel coating; S3, LIBS detection is carried out on the glass solidified body covered with the shear thickening gel coating, and element content and distribution information of the glass solidified body are obtained.
2. 2. The method for detecting a glass solidified body based on shear thickening nano-reinforced LIBS according to claim 1, wherein the element contained in the nanoparticle solution in the step S1 is different from the element to be detected in the glass solidified body.
3. 3. The method for detecting a glass solidified body based on shear thickening nano-reinforced LIBS according to claim 2, wherein the nanoparticle solution in the step S1 comprises a nano-gold solution, a nano-silver solution, a nano-platinum solution, a nano-palladium solution, a nano-ruthenium solution and a nano-iridium solution, and the method is selected according to the type of the element to be detected in the glass solidified body.
4. 4. The method for detecting glass solid body based on shear thickening nano-reinforced LIBS according to claim 1, wherein the mass ratio of the nanoparticle solution to the polymer material in the step S1 is 1:5 to 1:1.
5. 5. The method for detecting the glass solidification body based on the shear thickening nano-reinforced LIBS according to claim 1, wherein the step S1 is characterized in that the shear thickening gel is prepared by mixing, stirring and standing nanoparticle solution and high polymer material according to a preset proportion.
6. 6. The method for detecting a glass solid body based on shear thickening nano-reinforced LIBS according to claim 1, wherein the amount of the shear thickening gel in the step S2 is matched with the area to be detected of the surface of the glass solid body.
7. 7. The method for detecting the glass solidified body based on the shear thickening nanometer enhanced LIBS is characterized in that step S3 specifically comprises the steps of horizontally placing a glass solidified body covered with a shear thickening nanometer gel coating on the surface of a displacement table, turning on a laser, enabling pulse laser emitted by the laser to reach a focusing lens after being reflected by a dichroic mirror, focusing by the focusing lens, irradiating the surface of the glass solidified body covered with the shear thickening nanometer gel coating to generate plasma, converging characteristic spectrums of plasma radiation through a collecting lens, transmitting the characteristic spectrums to a spectrometer through an optical fiber, unfolding the collected composite light into monochromatic light signals by the spectrometer, transmitting the monochromatic light signals to a photoelectric conversion device for photoelectric conversion, displaying the collected characteristic spectrums, analyzing and inverting the characteristic spectrums, and finally obtaining element content and distribution information of the glass solidified body.
8. 8. The method for detecting glass solidification body based on shear thickening nanometer enhanced LIBS of claim 7, wherein the pulsed laser emitted by the laser in the step S3 is reflected by the dichroic mirror and is perpendicular to the surface of the displacement table after being focused by the focusing lens.

Description

Glass solidification body detection method based on shear thickening nano-enhanced LIBS Technical Field The invention belongs to the field of glass solidification body detection, and particularly relates to a glass solidification body detection method based on shear thickening nano-reinforced LIBS. Background The nuclear facility can generate high-radioactivity waste liquid in the operation process, has the characteristics of strong radioactivity, long half-life, high toxicity, high heat release rate and strong corrosiveness, and has great harm and needs to be properly treated. Glass solidification is the only method for treating the high-radioactivity waste liquid for engineering application at present. The glass solidifying technology adds the high-radioactivity waste liquid and the glass material into a high-temperature melting furnace according to a certain proportion, the melted glass material tightly wraps the radionuclide to form unified glass melt, and the glass melt can be cooled and solidified to obtain a complete glass solidified body. In the stacking and storing process of the glass solidified body, internal elements may migrate due to the reduced structural stability, so that the risk of radioactive substance leakage is caused, and therefore, the key element distribution of the glass solidified body needs to be detected. Currently, commonly used methods for detecting elements in glass solidified bodies include inductively coupled plasma atomic emission spectrometry (ICP-AES), inductively coupled plasma mass spectrometry (ICP-MS), and the like. According to the method, before detection, the glass solidified body sample is required to be crushed, ground and digested, the operation process is complex, the sample preparation time is long, and in-situ detection on the element distribution of the glass solidified body cannot be carried out on site. Therefore, the research on the on-site rapid and in-situ analysis technology realizes the synchronous detection of the distribution of various elements in the glass solidified body, and is important to analyze the radiation aging characteristics of the glass solidified body, evaluate the service life of the glass solidified body and evaluate the safety of the stacking process of the glass solidified body. The laser induced breakdown spectroscopy (Laser Induced Breakdown Spectroscopy, LIBS) technology is an emerging element analysis technology, and the technology is used for instantly completing the whole process of sampling, atomization and excitation by directly focusing high-energy laser pulses on the surface of a sample or inside a transparent substance, and simultaneously collecting the emission spectrum of laser induced plasma on the surface of the sample by utilizing a spectrometer to complete the qualitative and quantitative analysis of elements contained in the sample to be tested, wherein the whole analysis process can be completed within a few seconds. Compared with the traditional elemental analysis technology, the LIBS technology does not need digestion treatment on samples before detection, saves treatment time, has the unique advantages of high detection speed, in-situ detection, real-time detection and the like, and meets the actual requirements of multi-element in-situ, in-situ and rapid detection in a glass solidified body. However, when LIBS directly detects the glass solidified body, laser impact easily causes the glass solidified body to be broken, so that the detection safety is reduced, the absorption rate of the glass to laser is lower, the LIBS spectrum signal intensity is reduced, and the element detection sensitivity of the glass solidified body is reduced. Disclosure of Invention Aiming at the technical defects existing in the prior art, the invention aims to provide a glass solidified body detection method based on shear thickening nano-reinforced LIBS, which is characterized in that a nano-particle solution and a high polymer material are mixed in proportion to prepare a shear thickening gel, and the gel is uniformly smeared on the surface of the glass solidified body. When the shear thickening gel is impacted by laser, particles in the gel are blocked due to the fact that the shear rate exceeds a critical value, a solid-like structure is formed to disperse impact force, and the glass solidified body is protected from being damaged by the laser impact. Meanwhile, in the process of the action of the laser and the nano particles in the gel, the nano particles conduct electron oscillation and surface plasmon resonance, so that the laser-induced plasma radiation spectrum intensity can be improved. The method is simple to operate and quick in reaction, can synchronously improve the detection safety and sensitivity of the LIBS glass solidified body element, and has wide application prospect. In order to achieve the purpose, the invention adopts the technical scheme that the invention discloses a glass solidification body detection me