CN113414076A - Method for preparing coating on inner side of radiation monitoring device - Google Patents
Method for preparing coating on inner side of radiation monitoring device Download PDFInfo
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- CN113414076A CN113414076A CN202110733531.1A CN202110733531A CN113414076A CN 113414076 A CN113414076 A CN 113414076A CN 202110733531 A CN202110733531 A CN 202110733531A CN 113414076 A CN113414076 A CN 113414076A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/004—Reflecting paints; Signal paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2301/00—Inorganic additives or organic salts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2320/00—Organic additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2506/00—Halogenated polymers
- B05D2506/10—Fluorinated polymers
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Measurement Of Radiation (AREA)
- Luminescent Compositions (AREA)
Abstract
The invention discloses a method for preparing a coating on the inner side of a radiation monitoring device, which comprises the following steps: firstly, sieving metal oxide powder; secondly, mixing isoamyl acetate, butyl acetate and fluororubber 246; thirdly, ball milling the fine powder and the glue solution; fourthly, adding acetone into the front flooding liquid, stirring and filtering; fifthly, cleaning the inner side of the radiation monitoring device; and sixthly, spraying the coating liquid on the inner side of the radiation monitoring device to obtain a coating on the inner side of the radiation monitoring device. The invention adopts isoamyl acetate and butyl acetate as solvent to mix with the fluororubber 246 to form glue solution, adds metal oxide powder into the glue solution, and forms a diffuse reflection coating with high thermal conductivity and radiation resistance on the inner side of the radiation monitoring device through dilution and spraying, thereby having good light color consistency, leading more fluorescence generated by the scintillator to be collected by the photomultiplier tube, improving the luminous efficiency and further improving the monitoring efficiency and the accuracy of the radiation monitoring device.
Description
Technical Field
The invention belongs to the technical field of radiation monitoring devices, and particularly relates to a method for preparing a coating on the inner side of a radiation monitoring device.
Background
At the present stage, China is developing nuclear energy vigorously, and with the establishment of nuclear power plants and nuclear reactors and the wide application of radioactive isotopes, the concern of the influence of nuclear radiation on the living environment and the personal health is gradually improved. When the nuclear technology is widely used, the atomic nucleus of the radioactive isotope is unstable, radioactive particles with high energy are emitted in the decay process, and the radioactive particles act on substances to cause ionization and excitation, so that the human body and the surrounding environment are damaged. In recent years, with the continuous development of the nuclear energy industry, the market demand of nuclear instruments is greatly increased, and people pay more attention to radiation protection after the accident of the fukushima in japan.
At present, a radiation monitoring device mainly comprises a scintillator arranged on the radiation monitoring device and a photomultiplier arranged in the radiation monitoring device, when incident particles enter the scintillator, atoms of the scintillator are excited to generate fluorescence, the generated fluorescence is captured by the photomultiplier in the radiation monitoring device, a light signal of the fluorescence is converted into an electric signal through the photomultiplier, and the electric signal is finally displayed by a counter to monitor radiation. If the effective area that scintillator and photomultiplier's distance is too close photomultiplier can receive fluorescence will diminish, the accuracy of monitoring can reduce, in the actual production, it just can furthest's utilization photomultiplier to have certain distance with control between scintillator and the photomultiplier at best, increase the accuracy of monitoring, however, when having certain distance between scintillator and the photomultiplier, the fluorescence of production can take place refraction and reflection in the inside of radiation monitoring device before being caught by photomultiplier, have certain loss, the monitoring result has been led to the error.
In light of the above, it is desirable to increase the absorption amount of incident particles by the photomultiplier tube in the radiation monitoring device, and therefore, a method for improving the absorption rate of particles by spraying a coating on the inner wall of the radiation monitoring device, thereby improving the detection efficiency and accuracy, is needed.
Disclosure of Invention
The present invention is directed to a method for preparing a coating on the inner side of a radiation monitoring device. The method adopts isoamyl acetate and butyl acetate as solvents to be mixed with fluororubber 246 to form glue solution, metal oxide powder is added into the glue solution, and through dilution and spraying, a diffuse reflection coating is formed on the inner side of the radiation monitoring device.
In order to solve the technical problems, the invention adopts the technical scheme that: a method of preparing a coating on the inside of a radiation monitoring device, comprising the steps of:
step one, sieving metal oxide powder to obtain fine powder;
step two, mixing isoamyl acetate, butyl acetate and fluororubber 246 to obtain glue solution;
step three, adding the fine powder obtained in the step one and the glue solution obtained in the step two into a ball mill for ball milling to obtain a precursor solution;
step four, adding acetone into the precursor solution obtained in the step three, and then sequentially stirring and filtering to obtain a coating solution;
cleaning the inner side of the radiation monitoring device to obtain a clean radiation monitoring device;
and step six, spraying the coating liquid obtained in the step four on the inner side of the radiation monitoring device obtained in the step five, and obtaining a coating on the inner side of the radiation monitoring device.
According to the invention, the metal oxide powder is sieved, the fine powder and the glue solution are ball-milled together, and the fine powder and the glue solution are filtered to remove particles with larger particle sizes in the metal oxide powder, so that the metal oxide powder in the coating solution is guaranteed to be fine powder, the obtained coating is fine and smooth, the diffuse reflection performance of the coating is enhanced, and the monitoring accuracy is improved; isoamyl acetate and butyl acetate are used as solvents to be mixed with fluororubber 246, the fluororubber 246 is dissolved to obtain glue solution, fine powder is added into the glue solution and then ball milling is carried out, so as to obtain the main components of the coating solution, wherein the fluororubber 246 has the characteristics of high temperature resistance, aging resistance, radiation resistance and good solvent resistance, metal oxide powder can be bonded on the inner side of the radiation monitoring device to form a coating, the prepared high diffuse reflection white coating has the functions of high temperature resistance, aging resistance, high humidity resistance, vulcanization resistance, antifouling property and the like, and simultaneously has high thermal conductivity and radiation resistance, the metal oxide powder is uniformly dispersed in the glue solution, so that the metal oxide powder in the coating is ensured to be uniform, and a stable diffuse reflection layer is formed by the metal oxide powder and the glue solution, so that the accuracy of the radiation monitoring device is improved; the acetone is added into the precursor liquid to dilute the precursor liquid, the obtained coating liquid is moderate in thickness, spraying is facilitated, the obtained coating is fine and smooth, the inner side of the radiation monitoring device is cleaned, impurities such as primer and dirty marks are stained on the inner side of the radiation monitoring device and scraped off by a plate repairing knife, then the coating is wiped off by an ethanol cotton ball, the marks are firmly scratched by a small amount of acetone cotton balls, and the sprayed surface is absolutely guaranteed to be clean.
The method for preparing the coating on the inner side of the radiation monitoring device is characterized in that in the step one, the material of the metal oxide powder is magnesium oxide or lead oxide, and a 100-mesh screen is adopted for sieving. According to the invention, the material quality of the metal oxide powder is controlled, the high temperature resistance of the coating is improved by adding magnesium oxide, the acid resistance of the coating is improved by adding lead oxide, the components of the coating can be adjusted according to the requirements of actual conditions, and the particle size of fine powder is ensured by adopting a 100-mesh screen, so that the obtained coating is fine and smooth, a layer of white coating with high diffuse reflection is uniformly formed, the luminous efficiency is improved, and the accuracy of a radiation monitoring device is improved.
The method for preparing the coating on the inner side of the radiation monitoring device is characterized in that in the second step, the mass ratio of isoamyl acetate, butyl acetate and fluororubber 246 is 160-180: 410-430: 200 to 220. The fluororubber 246 has high temperature resistance, aging resistance, radiation resistance and solvent resistance, can be used for a long time at 250 ℃, has higher stability to heat, strong acid, strong alkali, strong oxidant, solvent and the like, belongs to self-reinforcing rubber, has higher strength and poor liquidity, improves the processing performance of the fluororubber 246 by adopting isoamyl acetate and butyl acetate as processing aids, enhances the liquidity of glue solution, enables the fluororubber 246 to be prepared into a coating, enables the fluororubber 246 to be just dissolved by controlling various components in the glue solution, and enhances the high temperature resistance, aging resistance, radiation resistance and solvent resistance of the coating.
The method for preparing the coating on the inner side of the radiation monitoring device is characterized in that the mass ratio of the fine powder to the glue solution in the precursor solution in the third step is 270-290: 790 to 810. The invention ensures that the metal oxide powder and the glue solution can form a stable coating by controlling the mass ratio of the fine powder to the glue solution, and avoids the reduction of the elongation at break of the fluororubber and the reduction of the stability of the coating when the metal oxide powder is excessive.
The method for preparing the coating on the inner side of the radiation monitoring device is characterized in that in the third step, 35-40 glass balls with the diameter of 25mm and 40-45 glass balls with the diameter of 18mm are used as ball milling media in ball milling, a ball milling tank is sealed by paraffin in the ball milling, and the ball milling time is longer than 72 hours. According to the invention, a plurality of glass balls with different diameters are used as ball milling media, so that the ball milling effect is ensured, the obtained coating is fine and smooth, the ball milling tank is sealed by paraffin wax, the glue solution in the ball milling tank is prevented from leaking, the coating liquid is fully mixed by controlling the ball milling time, and the obtained coating is fine and smooth.
The method for preparing the coating on the inner side of the radiation monitoring device is characterized in that the mass ratio of the precursor solution to acetone in the fourth step is 1: 1.1 to 1.3. According to the invention, the mass ratio of the precursor liquid to the acetone is controlled to dilute the precursor liquid, so that the obtained coating liquid is moderate in thickness and beneficial to spraying.
The method for preparing the coating on the inner side of the radiation monitoring device is characterized in that an 80-mesh screen is adopted in the filtering in the fourth step. According to the invention, the coating liquid is filtered by adopting a 80-mesh screen, and substances with larger particles in the coating liquid are removed, so that the obtained coating is fine and smooth.
The method for preparing the coating on the inner side of the radiation monitoring device is characterized in that the spraying process in the sixth step is as follows: and (3) loading the coating liquid into a spray gun, and spraying for 3-4 times in sequence, wherein the air pressure of spraying is 0.4-0.5 MPa. According to the invention, by controlling the spraying parameters, the uniformity of the coating is improved, bubbles and wrinkles are prevented from being generated between the coating and the inner side of the radiation monitoring device, the coating is ensured to completely cover the inner side of the radiation monitoring device, and the coating is not required to be too thick so as to prevent the phenomenon of flow drop, thereby ensuring that the obtained coating is fine and smooth.
Compared with the prior art, the invention has the following advantages:
1. the invention adopts isoamyl acetate and butyl acetate as solvent to mix with fluororubber 246 to form glue solution, metal oxide powder is added into the glue solution, and through dilution and spraying, a diffuse reflection coating is formed on the inner side of the radiation monitoring device, and the prepared coating meets the functions of high temperature resistance, ageing resistance, high humidity resistance, vulcanization resistance, antifouling and the like, has high thermal conductivity and radiation resistance, ensures good photochromic consistency, ensures that more fluorescence generated by a scintillator is collected by a photomultiplier, improves the luminous efficiency, improves the particle absorption rate, and further improves the monitoring efficiency and the accuracy of the radiation monitoring device.
2. According to the invention, through sieving, ball milling and filtering, particles with larger particle sizes in the metal oxide powder are removed, and the metal oxide powder in the coating liquid is ensured to be fine powder, so that the obtained coating is ensured to be fine and smooth, the diffuse reflection performance of the coating is enhanced, and the accuracy of the radiation monitoring device is improved.
3. According to the invention, acetone is added into the precursor liquid to dilute the precursor liquid, so that the obtained coating liquid has moderate thickness, spraying is facilitated, and the obtained coating is fine and smooth.
4. According to the invention, by controlling the spraying parameters, the uniformity of the coating is improved, bubbles and wrinkles are prevented from being generated between the coating and the inner side of the radiation monitoring device, the complete coverage of the coating on the inner side of the radiation monitoring device is ensured, the thickness of the coating is controlled, the phenomenon of flow falling is prevented, the uniformity of the whole coating is ensured, and the obtained coating is fine and smooth.
5. The invention ensures that the obtained coating is fine and smooth by ball milling, prevents glue solution in the ball milling tank from leaking by sealing the ball milling tank by adopting paraffin, and ensures the full mixing of the coating solution by controlling the ball milling time.
The technical solution of the present invention is further described in detail by examples below.
Detailed Description
Example 1
The embodiment comprises the following steps:
step one, sieving metal oxide powder to obtain fine powder; the metal oxide powder is made of magnesium oxide, and a 100-mesh screen is adopted for sieving;
step two, mixing isoamyl acetate, butyl acetate and fluororubber 246 to obtain glue solution; the mass ratio of the isoamyl acetate to the butyl acetate to the fluororubber 246 is 168: 420: 210;
step three, adding the fine powder obtained in the step one and the glue solution obtained in the step two into a ball mill for ball milling to obtain a precursor solution; the mass ratio of the fine powder to the glue solution in the precursor liquid is 280: 798 of a water-soluble polymer; 40 glass balls with the diameter of 25mm and 40 glass balls with the diameter of 18mm are used as ball milling media in the ball milling, a ball milling tank is sealed by paraffin in the ball milling, and the ball milling time is 78 hours;
step four, adding acetone into the precursor solution obtained in the step three, and stirring to obtain a coating solution; the mass ratio of the precursor solution to acetone is 1: 1.2; filtering the coating liquid by using an 80-mesh screen before use;
cleaning the inner side of the radiation monitoring device to obtain a clean radiation monitoring device;
step six, spraying the coating liquid obtained in the step four on the inner side of the radiation monitoring device obtained in the step five, and obtaining a coating on the inner side of the radiation monitoring device; the spraying process comprises the following steps: and (3) loading the coating liquid into a spray gun, and sequentially spraying for 4 times, wherein the air pressure of spraying is 0.4 MPa.
Through detection, the coating prepared on the inner side of the radiation monitoring device in the embodiment has smooth surface, has the functions of high temperature resistance, aging resistance, high humidity resistance, vulcanization resistance, antifouling property and the like, has high heat conductivity and radiation resistance, and has good light and color consistency.
Example 2
The embodiment comprises the following steps:
step one, sieving metal oxide powder to obtain fine powder; the metal oxide powder is made of lead oxide; the sieving adopts a 100-mesh sieve;
step two, mixing isoamyl acetate, butyl acetate and fluororubber 246 to obtain glue solution; the mass ratio of the isoamyl acetate to the butyl acetate to the fluororubber 246 is 180: 410: 220, 220;
step three, adding the fine powder obtained in the step one and the glue solution obtained in the step two into a ball mill for ball milling to obtain a precursor solution; the mass ratio of the fine powder to the glue solution in the precursor liquid is 290: 790; 35 glass balls with the diameter of 25mm and 45 glass balls with the diameter of 18mm are used as ball milling media in the ball milling, a ball milling tank is sealed by paraffin in the ball milling, and the ball milling time is 76 hours;
step four, adding acetone into the precursor solution obtained in the step three, and stirring to obtain a coating solution; the mass ratio of the precursor solution to acetone is 1: 1.3; filtering the coating liquid by using an 80-mesh screen before use;
cleaning the inner side of the radiation monitoring device to obtain a clean radiation monitoring device;
step six, spraying the coating liquid obtained in the step four on the inner side of the radiation monitoring device obtained in the step five, and obtaining a coating on the inner side of the radiation monitoring device; the spraying process comprises the following steps: and (3) loading the coating liquid into a spray gun, and sequentially spraying for 3 times, wherein the air pressure of spraying is 0.5 MPa.
Through detection, the coating prepared on the inner side of the radiation monitoring device in the embodiment has smooth surface, has the functions of high temperature resistance, aging resistance, high humidity resistance, vulcanization resistance, antifouling property and the like, has high heat conductivity and radiation resistance, and has good light and color consistency.
Example 3
The embodiment comprises the following steps:
step one, sieving metal oxide powder to obtain fine powder; the metal oxide powder is made of magnesium oxide; the sieving adopts a 100-mesh sieve;
step two, mixing isoamyl acetate, butyl acetate and fluororubber 246 to obtain glue solution; the mass ratio of the isoamyl acetate to the butyl acetate to the fluororubber 246 is 160: 430: 200 of a carrier;
step three, adding the fine powder obtained in the step one and the glue solution obtained in the step two into a ball mill for ball milling to obtain a precursor solution; the mass ratio of the fine powder to the glue solution in the precursor liquid is 270: 810; 38 glass balls with the diameter of 25mm and 43 glass balls with the diameter of 18mm are used as ball milling media in the ball milling, a ball milling tank is sealed by paraffin in the ball milling, and the ball milling time is 74 hours;
step four, adding acetone into the precursor solution obtained in the step three, and stirring to obtain a coating solution; the mass ratio of the precursor solution to acetone is 1: 1.1; filtering the coating liquid by using an 80-mesh screen before use;
cleaning the inner side of the radiation monitoring device to obtain a clean radiation monitoring device;
step six, spraying the coating liquid obtained in the step four on the inner side of the radiation monitoring device obtained in the step five, and obtaining a coating on the inner side of the radiation monitoring device; the spraying process comprises the following steps: and (3) loading the coating liquid into a spray gun, and sequentially spraying for 4 times, wherein the air pressure of spraying is 0.45 MPa.
Through detection, the coating prepared on the inner side of the radiation monitoring device in the embodiment has smooth surface, has the functions of high temperature resistance, aging resistance, high humidity resistance, vulcanization resistance, antifouling property and the like, has high heat conductivity and radiation resistance, and has good light and color consistency.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modification, change and equivalent changes of the above embodiments according to the technical essence of the invention are still within the protection scope of the technical solution of the invention.
Claims (8)
1. A method of preparing a coating on the inside of a radiation monitoring device, comprising the steps of:
step one, sieving metal oxide powder to obtain fine powder;
step two, mixing isoamyl acetate, butyl acetate and fluororubber 246 to obtain glue solution;
step three, adding the fine powder obtained in the step one and the glue solution obtained in the step two into a ball mill for ball milling to obtain a precursor solution;
step four, adding acetone into the precursor solution obtained in the step three, and then sequentially stirring and filtering to obtain a coating solution;
cleaning the inner side of the radiation monitoring device to obtain a clean radiation monitoring device;
and step six, spraying the coating liquid obtained in the step four on the inner side of the radiation monitoring device obtained in the step five, and obtaining a coating on the inner side of the radiation monitoring device.
2. The method of claim 1, wherein in step one, the metal oxide powder is magnesium oxide or lead oxide, and the sieving is performed with 100 mesh sieve.
3. The method for preparing the coating on the inner side of the radiation monitoring device as claimed in claim 1, wherein the mass ratio of isoamyl acetate, butyl acetate and fluororubber 246 in the second step is 160-180: 410-430: 200 to 220.
4. The method for preparing the coating on the inner side of the radiation monitoring device according to claim 1, wherein the mass ratio of the fine powder to the glue solution in the precursor solution in the third step is 270-290: 790 to 810.
5. The method for preparing the coating on the inner side of the radiation monitoring device as claimed in claim 1, wherein the ball milling in the third step adopts 35 to 40 glass balls with the diameter of 25mm and 40 to 45 glass balls with the diameter of 18mm as ball milling media, the ball milling pot is sealed by paraffin, and the ball milling time is more than 72 h.
6. The method for preparing the coating on the inner side of the radiation monitoring device as claimed in claim 1, wherein the mass ratio of the precursor solution to acetone in the fourth step is 1: 1.1 to 1.3.
7. The method of claim 1, wherein the filtering in step four is performed with an 80 mesh screen.
8. The method for preparing the coating inside the radiation monitoring device according to claim 1, wherein the spraying in the sixth step is performed by: and (3) loading the coating liquid into a spray gun, and spraying for 3-4 times in sequence, wherein the air pressure of spraying is 0.4-0.5 MPa.
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