CN112280421B - Preparation method of silver-doped zinc sulfide hydrosol for coating detector - Google Patents
Preparation method of silver-doped zinc sulfide hydrosol for coating detector Download PDFInfo
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- CN112280421B CN112280421B CN202011030597.6A CN202011030597A CN112280421B CN 112280421 B CN112280421 B CN 112280421B CN 202011030597 A CN202011030597 A CN 202011030597A CN 112280421 B CN112280421 B CN 112280421B
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- C09D7/43—Thickening agents
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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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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
- C08K2003/3036—Sulfides of zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention provides a preparation method of silver-doped zinc sulfide hydrosol for coating a detector, which comprises the following steps of preparing hydrosol base liquid, preparing silver-doped zinc sulfide hydrosol and coating, wherein the ratio of the silver-doped zinc sulfide detector coating hydrosol prepared by the preparation method to the silver-doped zinc sulfide powder is 24-26: 1, then uniformly spraying the mixture on a large-area light guide by using a spraying machine, wherein silver-doped zinc sulfide particles in the silver-doped zinc sulfide film are uniformly distributed in the air-dried coating hydrosol, so that the detection efficiency of the silver-doped zinc sulfide detector on alpha particles is ensured to be consistent. And the silver-doped zinc sulfide detector after air drying is coated with hydrosol with moderate thickness and good light transmission, so that the fluorescent photon energy generated by the energy deposited by the alpha particles on the zinc sulfide particles can be efficiently transmitted to a large-area light guide and finally received by a photoelectric detection device.
Description
Technical Field
The invention relates to the technical field of preparation of fluorescent material hydrosol for coating a detector, in particular to a preparation method of silver-doped zinc sulfide hydrosol for coating a detector.
Background
The fluorescent material includes inorganic fluorescent material and organic fluorescent material, wherein the inorganic fluorescent material is prepared by matching sulfide such as metal zinc, chromium and the like or rare earth oxide with trace amount of active agent and processing through a special treatment process. The natural form is colorless or light white, and the pigment shows visible light (400-800 nm) of various colors according to the types and contents of metals and activating agents in the pigment under the irradiation of ultraviolet light (200-400 nm). The organic small molecule luminescent materials are various in types, mostly have conjugated heterocycles and various chromophores, the structures are easy to adjust, and the conjugated length of the organic small molecule luminescent materials is changed by introducing unsaturated groups such as olefinic bonds, benzene rings and the like and various chromophores, so that the photoelectric properties of the compounds are changed.
In the inorganic fluorescent material, ZnS is a luminescent material substrate with unique performance, and efficient visible radiation of different wave bands can be obtained by changing a doping agent in the ZnS luminescent material substrate, so that true full-color luminescence is realized. People adopt various methods to prepare metal-doped ZnS-based nano luminescent materials, organic complex polymerization is used as a medium, various trace elements such as europium, manganese, copper and the like are doped into ZnS nano microcrystal, and different using methods of the luminescent materials are further researched and developed.
At present, the application method of silver-doped zinc sulfide [ chemical formula is ZnS (Ag) or ZnS: Ag ] on the organic glass photoconductive material is mainly a coating method, and the coating method mainly comprises three methods of brush coating, hot pressing and spray coating. Wherein, the coating hydrosol is needed in the brushing coating process and the spraying coating process of the silver-doped zinc sulfide fluorescent material. That is, before coating, the silver-doped zinc sulfide powder is fully mixed with the prepared coating hydrosol to form a silver-doped zinc sulfide hydrosol mixture, and then the mixture is coated on the photoconductive material by using the coating technology and is fixed to form the silver-doped zinc sulfide thin film detector (namely, the silver-doped zinc sulfide photoconductive detection plate). Moreover, compared with a hot pressing process and a brushing process, the spraying process can be used for manufacturing a large-area silver-doped zinc sulfide detector, and is more suitable for industrial batch production; meanwhile, the silver-doped zinc sulfide material coated by the spraying process can be distributed on the photoconductive material more uniformly, adhered and firmer, and the thickness can be adjusted theoretically. However, the spraying process is limited by the technical limitations of viscosity, light transmittance, viscosity and the like of the existing hydrosol prepared in advance, and the hydrosol with easily controlled coating thickness, uniformity, smoothness and good firmness is difficult to prepare.
Therefore, the invention provides a preparation method of the silver-doped zinc sulfide hydrosol for coating the detector, so as to obtain the silver-doped zinc sulfide coating with good firmness, and easily controlled coating thickness, uniformity and smoothness.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a preparation method of silver-doped zinc sulfide hydrosol for coating a detector.
In order to achieve the aim, the invention provides a preparation method of silver-doped zinc sulfide hydrosol for coating a detector, which comprises the following steps:
preparing an S1 resin solution, namely preparing the resin solution from the water-based epoxy resin and high-purity water according to a certain volume percentage;
s2, dissolving resin, namely, fully mixing and heating the resin solution obtained in the step S1, adding a cosolvent with a certain volume percentage, stirring by using a stirrer, standing, and repeatedly stirring and standing;
s3, cooling the aqueous epoxy resin solution prepared in the step S2, adding the emulsion and the defoaming agent in a certain volume percentage, stirring by using a stirrer, standing, and repeatedly stirring and standing for multiple times to fully emulsify the aqueous epoxy resin;
s4, adjusting the viscosity, namely adding a proper amount of thickening agent into the emulsified liquid prepared in the step S3, adjusting the viscosity of the emulsified liquid to 150-170 cP (at the temperature of 25 ℃), and then standing the emulsified liquid for 2-3 hours; the thickening agent is hydroxyethyl cellulose;
s5, filtering, namely filtering the emulsion which is kept stand in the step S4 by using filter paper with 450-550 meshes to obtain hydrosol base solution for coating silver-doped zinc sulfide;
s6 preparing silver-doped zinc sulfide hydrosol, adding silver-doped sulfide powder into the hydrosol base solution obtained in the step S5, and fully dissolving to obtain silver-doped zinc sulfide hydrosol;
s7, uniformly spraying the silver-doped zinc sulfide hydrosol obtained in the step S6 on a large-area light guide plate by using a spraying machine, and air-drying to obtain the silver-doped zinc sulfide film (namely the silver-doped zinc sulfide light guide detection plate); the air drying temperature is 20-30 ℃, and the humidity is 70-80%.
Preferably, the volume percentage of the water-based epoxy resin in the step S1 is 50-65%;
preferably, the specific operation of step S2 is: fully mixing the resin solution obtained in the step S1, heating to 60-75 ℃, adding 3-8% by volume of cosolvent, stirring for 30S at 3000-5000 rpm by using a stirrer, standing for 3min, and removing superficial foam on the surface layer; and repeating the stirring and standing for 4-6 times to fully dissolve the water-based epoxy resin in the high-purity water;
preferably, the cosolvent in step S2 is propylene glycol phenyl ether, or propylene glycol methyl ether acetate;
preferably, the specific operation of step S3 is: cooling the aqueous epoxy resin solution prepared in the step S2 to 25 ℃, then adding 0.5-1.5 volume percent of emulsion and 0.3-0.6 volume percent of defoaming agent, stirring for 60S at the rotating speed of 1000-2000 rpm by using a stirrer, then standing for 1min and removing superficial foam; repeating the stirring and standing for 3-4 times to fully emulsify the water-based epoxy resin; then standing for 2-3 hours, and removing water and floating foam on the liquid after chromatography;
preferably, the emulsion in step S3 is water-based polyurethane, and the defoaming agent is a silicone oil polymer; the organosilicon antifoaming agent can keep a liquid linear polysiloxane active agent at room temperature, so that the resin is fully emulsified and dissolved; it also prevents foam formation and reduces foam;
preferably, the thickener in step S4 is hydroxyethyl cellulose, or propylene glycol alginate, or methyl cellulose, so as to thicken the hydrosol and improve the storage stability of the solution;
preferably, the mass ratio of the hydrosol base liquid to the silver-doped zinc sulfide powder in the step S6 is 24-26: 1.
coating hydrosol and silver-doped zinc sulfide powder on the silver-doped zinc sulfide detector prepared by the preparation method in a proportion of 24-26: 1, and then the mixture was uniformly sprayed on a large-area light guide using a sprayer. The silver-doped zinc sulfide detector is coated with a mixture of hydrosol and silver-doped zinc sulfide powder, and the mixture is air-dried on a large-area light guide to form a silver-doped zinc sulfide film. The silver-doped zinc sulfide particles in the silver-doped zinc sulfide film are uniformly distributed in the dried coating hydrosol, so that the detection efficiency of the silver-doped zinc sulfide detector on alpha particles is consistent. And the silver-doped zinc sulfide detector after air drying is coated with hydrosol with moderate thickness and good light transmission, so that the fluorescent photon energy generated by the energy deposited by the alpha particles on the zinc sulfide particles can be efficiently transmitted to a large-area light guide and finally received by a photoelectric detection device.
Compared with the prior art, the invention has the following beneficial effects:
(1) the water solubility is good. The silver-doped zinc sulfide detector coating hydrosol produced by the invention can be fully and uniformly mixed with silver-doped zinc sulfide powder, so that the silver-doped zinc sulfide material can be uniformly sprayed on a large-area light guide material, and the detection efficiency of alpha particles at any position on the large-area silver-doped zinc sulfide detector is basically the same;
(2) the film forming quality is high. The silver-doped zinc sulfide film formed by spraying the mixture of the hydrosol and the silver-doped zinc sulfide powder coated on the large-area light guide 1 and air-drying is thin, moderate in thickness and good in uniformity. The alpha particles with weak penetrating ability can be ensured to easily enter the silver-doped zinc sulfide film, so that the generated fluorescent photons can enter a large-area light guide as much as possible, and the alpha particles can be ensured to be completely absorbed by the silver-doped zinc sulfide film, namely the alpha particle detection efficiency is high;
(3) the light transmittance is good. The transparency of the hydrosol coated on the silver-doped zinc sulfide detector is high, so that fluorescence photons generated by depositing energy on the silver-doped zinc sulfide film by alpha particles can easily enter a large-area light guide plate, the collection efficiency of the silver-doped zinc sulfide detector on the fluorescence photons is high, the amplitude of a finally generated signal is high, and the energy resolution is good;
(4) the viscosity is good. The coating hydrosol of the silver-doped zinc sulfide detector has good viscosity, and is mixed with silver-doped zinc sulfide powder and then sprayed on a large-area light guide, so that silver-doped zinc sulfide particles can be firmly adhered to the large-area light guide plate, and the service life of the silver-doped zinc sulfide detector is greatly prolonged;
(5) the fluidity is good. In the spraying process, the mixture of the hydrosol and the silver-doped zinc sulfide powder coated on the silver-doped zinc sulfide detector flows freely on the surface of the large-area light guide to a certain extent, so that the spraying surface of the large-area light guide is flat and smooth, and zinc sulfide particles are uniformly distributed on the surface of the large-area light guide.
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FIG. 1 is a process flow diagram of a preparation method of silver-doped zinc sulfide hydrosol for coating a detector.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples, so that those skilled in the art can fully understand the technical contents of the present invention. It should be noted that the specific embodiments described herein are only for explaining the present invention and are not used to limit the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The invention provides a preparation method of silver-doped zinc sulfide hydrosol for coating a detector, which comprises the following steps:
s1, preparing a resin solution, namely preparing the resin solution from water-based epoxy resin and high-purity water according to the volume percentage, wherein the volume percentage of the water-based epoxy resin is 50-65%;
s2, dissolving resin, namely fully mixing the resin solution obtained in the step S1, heating the mixture to 60-75 ℃, adding 3-8% by volume of cosolvent, stirring the mixture for 30 seconds at a rotating speed of 3000-5000 rpm by using a stirrer, and standing the mixture for 3min to remove superficial foam on the surface layer; and repeating the stirring and standing for 4-6 times to fully dissolve the water-based epoxy resin in the high-purity water; the cosolvent is propylene glycol phenyl ether or propylene glycol methyl ether acetate;
s3 emulsified resin, cooling the aqueous epoxy resin solution prepared in the step S2 to 25 ℃, adding 0.5-1.5 volume percent of polyurethane emulsion and 0.3-0.6 volume percent of defoaming agent, stirring for 60S at the rotating speed of 1000-2000 rpm by using a stirrer, standing for 1min and removing surface layer floating foam; and repeating the stirring and standing for 3-4 times to fully emulsify the water-based epoxy resin; then standing for 2-3 hours, and removing water and floating foam on the liquid after chromatography;
s4, adjusting the viscosity, namely adding a proper amount of thickening agent into the emulsified liquid prepared in the step S3, adjusting the viscosity of the emulsified liquid to 150-170 cP (at the temperature of 25 ℃), and then standing the emulsified liquid for 2-3 hours; the thickening agent is hydroxyethyl cellulose;
s5, filtering, namely filtering the emulsion standing in the step S4 by using 500-mesh filter paper to obtain hydrosol base solution for coating silver-doped zinc sulfide;
s6 preparation of the silver-doped zinc sulfide hydrosol, adding silver-doped sulfide powder into the hydrosol base liquid obtained in the step S5 to obtain the silver-doped zinc sulfide hydrosol, wherein the mass ratio of the silver-doped zinc sulfide powder to the hydrosol base liquid is 1: 24-26;
s7 silver-doped zinc sulfide detector, uniformly spraying the silver-doped zinc sulfide hydrosol obtained in the step S6 on a large-area light guide plate by using a spraying machine, and air-drying to obtain the silver-doped zinc sulfide detector (namely the silver-doped zinc sulfide light guide detection plate); the air drying temperature is 20-30 ℃, and the humidity is 70-80%.
Example 1:
the preparation method of the silver-doped zinc sulfide hydrosol for coating the detector provided by the embodiment comprises the following steps of preparing 7 silver-doped zinc sulfide thin film detectors at a time, such as numbers HT-AJQ0001 to HT-AJQ0007 in Table 1:
preparing an S1 resin solution, namely preparing the resin solution from the water-based epoxy resin and high-purity water according to the volume percentage, wherein the volume percentage of the water-based epoxy resin is 50%;
s2, dissolving resin, namely fully mixing the resin solution obtained in the step S1, heating the mixture to 60-75 ℃, adding 3% of cosolvent by volume, stirring the mixture for 30 seconds at a rotating speed of 3000-5000 rpm by using a stirrer, and standing for 3min to remove superficial foam on the surface layer; and repeating the stirring and standing for 4-6 times to fully dissolve the water-based epoxy resin in the high-purity water; the cosolvent is propylene glycol phenyl ether;
s3 emulsified resin, cooling the aqueous epoxy resin solution prepared in the step S2 to 25 ℃, adding 0.5% of polyurethane emulsion and 0.3% of defoaming agent in volume percentage, stirring for 60S at the rotating speed of 1000-2000 rpm by using a stirrer, standing for 1min, and removing surface layer floating foam; and repeating the stirring and standing for 3-4 times to fully emulsify the water-based epoxy resin; then standing for 2-3 hours, and removing water and floating foam on the liquid after chromatography;
s4, adjusting the viscosity, namely adding a proper amount of thickening agent into the emulsified liquid prepared in the step S3, adjusting the viscosity of the emulsified liquid to 150cP (at the temperature of 25 ℃), and standing the emulsified liquid for 2-3 hours; the thickener is propylene glycol alginate protease;
s5, filtering, namely filtering the emulsion standing in the step S4 by using filter paper of 450 meshes to obtain hydrosol base solution for coating silver-doped zinc sulfide;
s6 preparation of the silver-doped zinc sulfide hydrosol, adding silver-doped sulfide powder into the hydrosol base liquid obtained in the step S5 to obtain the silver-doped zinc sulfide hydrosol, wherein the mass ratio of the silver-doped zinc sulfide powder to the hydrosol base liquid is 1: 24;
s7 silver-doped zinc sulfide detector, uniformly spraying the silver-doped zinc sulfide hydrosol obtained in the step S6 on a large-area light guide plate by using a spraying machine, and air-drying to obtain the silver-doped zinc sulfide detector (namely the silver-doped zinc sulfide light guide detection plate); the air drying temperature is 20-30 ℃, and the humidity is 70-80%.
The detection results of the silver-doped zinc sulfide detector prepared by the method are shown in table 1, and the uniform film ensures that the detection efficiency of alpha particles at any position on the detector is basically the same, and simultaneously ensures the stability of the detection efficiency of alpha particles.
Example 2:
the preparation method comprises the following steps of preparing 7 silver-doped zinc sulfide thin film detectors with the numbers HT-AJQ0008 to HT-AJQ00014 in table 1 in one step:
preparing an S1 resin solution, namely preparing the resin solution from the water-based epoxy resin and high-purity water according to the volume percentage, wherein the volume percentage of the water-based epoxy resin is 58%;
s2, dissolving resin, namely fully mixing the resin solution obtained in the step S1, heating the mixture to 60-75 ℃, adding 6% of cosolvent by volume, stirring the mixture for 30 seconds at a rotating speed of 3000-5000 rpm by using a stirrer, and standing for 3min to remove superficial foam on the surface layer; and repeating the stirring and standing for 4-6 times to fully dissolve the water-based epoxy resin in the high-purity water; the cosolvent is propylene glycol methyl ether acetate;
s3 emulsified resin, cooling the aqueous epoxy resin solution prepared in the step S2 to 25 ℃, adding 1.0% of polyurethane emulsion and 0.5% of defoaming agent by volume percentage, stirring for 60S at the rotating speed of 1000-2000 rpm by using a stirrer, standing for 1min and removing surface layer floating foam; and repeating the stirring and standing for 3-4 times to fully emulsify the water-based epoxy resin; then standing for 2-3 hours, and removing water and floating foam on the liquid after chromatography;
s4, adjusting the viscosity, namely adding a proper amount of thickening agent into the emulsified liquid prepared in the step S3, adjusting the viscosity of the emulsified liquid to 160cP (at the temperature of 25 ℃), and standing the emulsified liquid for 2-3 hours; the thickening agent is hydroxyethyl cellulose;
s5, filtering, namely filtering the emulsion standing in the step S4 by using 500-mesh filter paper to obtain hydrosol base solution for coating silver-doped zinc sulfide;
s6 preparation of the silver-doped zinc sulfide hydrosol, adding silver-doped sulfide powder into the hydrosol base liquid obtained in the step S5 to obtain the silver-doped zinc sulfide hydrosol, wherein the mass ratio of the silver-doped zinc sulfide powder to the hydrosol base liquid is 1: 25;
s7 silver-doped zinc sulfide detector, uniformly spraying the silver-doped zinc sulfide hydrosol obtained in the step S6 on a large-area light guide plate by using a spraying machine, and air-drying to obtain the silver-doped zinc sulfide detector (namely the silver-doped zinc sulfide light guide detection plate); the air drying temperature is 20-30 ℃, and the humidity is 70-80%.
The detection results of the silver-doped zinc sulfide detector prepared by the method are shown in table 1, and the uniform film ensures that the detection efficiency of alpha particles at any position on the detector is basically the same, and simultaneously ensures the stability of the detection efficiency of alpha particles.
Example 3:
the preparation method comprises the following steps, 6 silver-doped zinc sulfide thin film detectors are prepared by the solution, such as numbers HT-AJQ0015 to HT-AJQ0020 of table 1:
preparing an S1 resin solution, namely preparing a resin solution from aqueous epoxy resin and high-purity water according to the volume percentage, wherein the volume percentage of the aqueous epoxy resin is 65%;
s2, dissolving resin, namely fully mixing the resin solution obtained in the step S1, heating the mixture to 60-75 ℃, adding 8% of cosolvent by volume, stirring the mixture for 30 seconds at a rotating speed of 3000-5000 rpm by using a stirrer, and standing for 3min to remove superficial foam on the surface layer; and repeating the stirring and standing for 4-6 times to fully dissolve the water-based epoxy resin in the high-purity water; the cosolvent is propylene glycol phenyl ether;
s3 emulsified resin, cooling the aqueous epoxy resin solution prepared in the step S2 to 25 ℃, adding 1.5 volume percent of polyurethane emulsion and 0.6 volume percent of defoaming agent, stirring for 60S at the rotating speed of 1000-2000 rpm by using a stirrer, standing for 1min and removing surface layer floating foam; and repeating the stirring and standing for 3-4 times to fully emulsify the water-based epoxy resin; then standing for 2-3 hours, and removing water and floating foam on the liquid after chromatography;
s4 adjusting the viscosity, adding proper amount of thickener into the emulsified liquid prepared in the step S3, and adjusting the viscosity of the emulsified liquid to 170cP (at the temperature of 25 ℃), and then standing the emulsified liquid for 2-3 hours; the thickening agent is methyl cellulose;
s5, filtering, namely filtering the emulsion standing in the step S4 by using 550-mesh filter paper to obtain hydrosol base solution for coating silver-doped zinc sulfide;
s6 preparing silver-doped zinc sulfide hydrosol, adding silver-doped sulfide powder into the hydrosol base liquid obtained in the step S5 to obtain silver-doped zinc sulfide hydrosol, wherein the mass ratio of the silver-doped zinc sulfide powder to the hydrosol base liquid is 1: 26;
s7 silver-doped zinc sulfide detector, uniformly spraying the silver-doped zinc sulfide hydrosol obtained in the step S6 on a large-area light guide plate by using a spraying machine, and air-drying to obtain the silver-doped zinc sulfide detector (namely the silver-doped zinc sulfide light guide detection plate); the air drying temperature is 20-30 ℃, and the humidity is 70-80%.
The detection results of the silver-doped zinc sulfide detector prepared by the method are shown in table 1, and the uniform film ensures that the detection efficiency of alpha particles at any position on the detector is basically the same, and simultaneously ensures the stability of the detection efficiency of alpha particles.
Table 1 shows the detection results of the silver-doped zinc sulfide detector prepared by the method.
| Product numbering | High pressure (V) | Alpha threshold | Beta threshold | Alpha background | Beta background | Alpha efficiency (%) | Alpha string of beta | Beta efficiency (%) | Beta string alpha |
| HT-AJQ0001 | 830 | 600 | 150 | 0.4 | 18.5 | 49.5 | 38.995 | 48.9 | 0.335 |
| HT-AJQ0002 | 840 | 600 | 150 | 0.4 | 18.7 | 49.3 | 39.548 | 48.8 | 0.365 |
| HT-AJQ0003 | 830 | 600 | 150 | 0.3 | 18.6 | 49.2 | 38.458 | 48.1 | 0.355 |
| HT-AJQ0004 | 840 | 600 | 150 | 0.4 | 18.4 | 49.3 | 38.965 | 49.8 | 0.385 |
| HT-AJQ0005 | 830 | 600 | 150 | 0.4 | 18.4 | 49.4 | 39.191 | 49.2 | 0.348 |
| HT-AJQ0006 | 830 | 600 | 150 | 0.4 | 18.5 | 49.8 | 39.687 | 49.3 | 0.398 |
| HT-AJQ0007 | 840 | 600 | 150 | 0.5 | 18.2 | 49.7 | 39.887 | 48.3 | 0.362 |
| HT-AJQ0008 | 830 | 600 | 140 | 0.4 | 19.5 | 49.2 | 39.655 | 48.2 | 0.348 |
| HT-AJQ0009 | 830 | 600 | 150 | 0.3 | 19.1 | 49.3 | 38.859 | 49.5 | 0.348 |
| HT-AJQ0010 | 830 | 600 | 150 | 0.3 | 18.3 | 49.6 | 39.783 | 49.3 | 0.387 |
| HT-AJQ0011 | 830 | 600 | 150 | 0.3 | 18.8 | 49.6 | 39.685 | 49.2 | 0.401 |
| HT-AJQ0012 | 840 | 600 | 150 | 0.4 | 17.8 | 49.2 | 39.115 | 48.3 | 0.331 |
| HT-AJQ0013 | 830 | 600 | 150 | 0.4 | 17.9 | 49.3 | 39.549 | 48.9 | 0.391 |
| HT-AJQ0014 | 840 | 600 | 150 | 0.5 | 17.9 | 49.3 | 39.859 | 48.3 | 0.406 |
| HT-AJQ0015 | 840 | 600 | 150 | 0.4 | 18.2 | 49.1 | 38.694 | 48.0 | 0.418 |
| HT-AJQ0016 | 840 | 600 | 150 | 0.5 | 18.5 | 49.9 | 38.487 | 48.7 | 0.399 |
| HT-AJQ0017 | 840 | 600 | 150 | 0.5 | 18.8 | 49.6 | 38.944 | 49.7 | 0.320 |
| HT-AJQ0018 | 830 | 600 | 150 | 0.4 | 19.7 | 49.7 | 38.457 | 49.3 | 0.361 |
| HT-AJQ0019 | 830 | 600 | 150 | 0.5 | 19.5 | 49.6 | 39.898 | 49.2 | 0.354 |
| HT-AJQ0020 | 840 | 600 | 150 | 0.4 | 18.6 | 49.8 | 39.222 | 49.1 | 0.311 |
It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (8)
1. A preparation method of silver-doped zinc sulfide hydrosol for coating a detector is characterized by comprising the following steps:
preparing an S1 resin solution, namely preparing the resin solution from the water-based epoxy resin and high-purity water according to a certain volume percentage;
s2, dissolving resin, namely, fully mixing and heating the resin solution obtained in the step S1, adding a cosolvent with a certain volume percentage, stirring by using a stirrer, standing, and repeatedly stirring and standing;
s3, cooling the aqueous epoxy resin solution prepared in the step S2, adding the emulsion and the defoaming agent in a certain volume percentage, stirring by using a stirrer, standing, and repeatedly stirring and standing for multiple times to fully emulsify the aqueous epoxy resin;
s4, adjusting the viscosity, adding a proper amount of thickening agent into the emulsified liquid prepared in the step S3, adjusting the viscosity of the emulsified liquid to 150-170 cP, and standing the emulsified liquid for 2-3 hours; the thickening agent is hydroxyethyl cellulose;
s5, filtering, namely filtering the emulsion which is kept stand in the step S4 by using filter paper with 450-550 meshes to obtain hydrosol base solution for coating silver-doped zinc sulfide;
s6 preparing silver-doped zinc sulfide hydrosol, adding silver-doped zinc sulfide powder into the hydrosol base solution obtained in the step S5, and fully dissolving to obtain silver-doped zinc sulfide hydrosol;
s7, uniformly spraying the silver-doped zinc sulfide hydrosol obtained in the step S6 on a large-area light guide plate by using a spraying machine, and air-drying to obtain a silver-doped zinc sulfide film; the air drying temperature is 20-30 ℃, and the humidity is 70-80%.
2. The method for preparing the silver-doped zinc sulfide hydrosol for coating the detector according to claim 1, wherein the method comprises the following steps:
and S1, the volume percentage of the waterborne epoxy resin is 50-65%.
3. The method for preparing the silver-doped zinc sulfide hydrosol for coating the detector according to claim 1, wherein the method comprises the following steps:
the specific operation of step S2 is: fully mixing the resin solution obtained in the step S1, heating to 60-75 ℃, adding 3-8% by volume of cosolvent, stirring for 30S at 3000-5000 rpm by using a stirrer, standing for 3min, and removing superficial foam on the surface layer; and repeating the stirring and standing for 4-6 times to fully dissolve the water-based epoxy resin in the high-purity water.
4. A method of preparing a silver-doped zinc sulfide hydrosol for coating a detector according to claim 1 or 3, wherein:
the cosolvent in the step S2 is propylene glycol phenyl ether or propylene glycol methyl ether acetate.
5. The method for preparing the silver-doped zinc sulfide hydrosol for coating the detector according to claim 1, wherein the method comprises the following steps:
the specific operation of step S3 is: cooling the aqueous epoxy resin solution prepared in the step S2 to 25 ℃, adding 0.5-1.5 volume percent of emulsion and 0.3-0.6 volume percent of defoaming agent, stirring for 60S at the rotating speed of 1000-2000 rpm by using a stirrer, standing for 1min, and removing superficial foam; repeating the stirring and standing for 3-4 times to fully emulsify the water-based epoxy resin; and then standing for 2-3 hours, and removing water and floating foam on the liquid.
6. A method of preparing a silver-doped zinc sulfide hydrosol for coating a detector according to claim 1 or 5, wherein:
and step S3, the defoaming agent is organic silicone oil polymer.
7. The method for preparing the silver-doped zinc sulfide hydrosol for coating the detector according to claim 1, wherein the method comprises the following steps:
in step S4, the thickening agent is hydroxyethyl cellulose, or propylene glycol alginate ester, or methyl cellulose, so that the hydrosol is thickened and the storage stability of the solution is improved.
8. The method for preparing the silver-doped zinc sulfide hydrosol for coating the detector according to claim 1, wherein the method comprises the following steps:
the mass ratio of the hydrosol base liquid to the silver-doped zinc sulfide powder in the step S6 is 24-26: 1.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000065936A (en) * | 1998-08-25 | 2000-03-03 | Japan Atom Energy Res Inst | Method for phoswitch simultaneously measuring radiation by fluorescence transmission system and detector therefor |
| CN102060263A (en) * | 2010-12-17 | 2011-05-18 | 东华大学 | Preparation of ZnO/ ZnS/ Ag nano-rod array in microchannel |
| CN110305349A (en) * | 2018-03-20 | 2019-10-08 | 致晶科技（北京）有限公司 | A kind of composite material and preparation method and application |
| CN111378331A (en) * | 2020-03-31 | 2020-07-07 | 上海现代装饰艺术有限公司 | Environment-friendly latex paint for decoration and preparation method thereof |
| CN111560191A (en) * | 2020-06-17 | 2020-08-21 | 安徽宇航派蒙健康科技股份有限公司 | Corrosion-resistant flame-retardant graphene high-conductivity ink and preparation method thereof |
| CN111638541A (en) * | 2020-05-27 | 2020-09-08 | 河北航遥科技有限公司 | Radon concentration measuring method and device |
| CN211554325U (en) * | 2019-12-18 | 2020-09-22 | 广州兰泰胜辐射防护科技有限公司 | Radiation detection device and chip |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9625586B2 (en) * | 2011-03-31 | 2017-04-18 | Japan Atomic Energy Agency | Scintillator plate, radiation measuring apparatus, radiation imaging apparatus, and scintillator plate manufacturing method |
| CN103077761B (en) * | 2013-01-29 | 2015-08-05 | 中国工程物理研究院核物理与化学研究所 | A kind of thermal neutron fluorescent screen and preparation method thereof |
| CN112694754A (en) * | 2020-12-04 | 2021-04-23 | 清华大学 | Display film, preparation method and application thereof, and information storage display method |
-
2020
- 2020-09-27 CN CN202011030597.6A patent/CN112280421B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000065936A (en) * | 1998-08-25 | 2000-03-03 | Japan Atom Energy Res Inst | Method for phoswitch simultaneously measuring radiation by fluorescence transmission system and detector therefor |
| CN102060263A (en) * | 2010-12-17 | 2011-05-18 | 东华大学 | Preparation of ZnO/ ZnS/ Ag nano-rod array in microchannel |
| CN110305349A (en) * | 2018-03-20 | 2019-10-08 | 致晶科技（北京）有限公司 | A kind of composite material and preparation method and application |
| CN211554325U (en) * | 2019-12-18 | 2020-09-22 | 广州兰泰胜辐射防护科技有限公司 | Radiation detection device and chip |
| CN111378331A (en) * | 2020-03-31 | 2020-07-07 | 上海现代装饰艺术有限公司 | Environment-friendly latex paint for decoration and preparation method thereof |
| CN111638541A (en) * | 2020-05-27 | 2020-09-08 | 河北航遥科技有限公司 | Radon concentration measuring method and device |
| CN111560191A (en) * | 2020-06-17 | 2020-08-21 | 安徽宇航派蒙健康科技股份有限公司 | Corrosion-resistant flame-retardant graphene high-conductivity ink and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| A MORE RUGGED ZnS(Ag) ALPHA SCINTILLATION DETECTOR;S.A.McElhaney et al;《IEEE TRANSACTIONS ON NUCLEAR SCIENCE》;19900430;第37卷(第2期);第868-872页 * |
| 闪烁室本底的来源及降低方法;肖拥军等;《南华大学学报(自然科学版)》;20040930;第18卷(第3期);第108-111页 * |
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