CN115156009A - Process for improving brightness of electron beam fluorescent screen - Google Patents
Process for improving brightness of electron beam fluorescent screen Download PDFInfo
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- CN115156009A CN115156009A CN202210660230.5A CN202210660230A CN115156009A CN 115156009 A CN115156009 A CN 115156009A CN 202210660230 A CN202210660230 A CN 202210660230A CN 115156009 A CN115156009 A CN 115156009A
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- screen
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- deionized water
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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
- B05D7/24—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 for applying particular liquids or other fluent materials
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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
- B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
- B05D1/185—Processes for applying liquids or other fluent materials performed by dipping applying monomolecular layers
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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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/007—After-treatment
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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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
- B05D3/0413—Heating with air
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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
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer
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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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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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
- C09D5/22—Luminous 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
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/59—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing silicon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
The invention discloses a process method for improving the brightness of an electron beam fluorescent screen, which relates to the field of fluorescent screens and adopts the technical scheme that the process method comprises the following steps: the method comprises the following steps: preparing a fluorescent powder suspension: conveying the potassium silicate colloidal solution and the barium nitrate solution into a reaction vessel for stirring to form a phosphor suspension; step two: fluorescent powder sinking: injecting the prepared fluorescent powder suspension into a glass shell, carrying out static precipitation, and pouring out waste liquid; step three: drying by hot air flow: hot air flow is introduced into the settled fluorescent layer for drying; step four: soaking in deionized water: soaking a screen for multiple times by using a proper amount of deionized water, wherein the soaking time is a period of time each time; step five: and (3) coating an organic film on the soaked fluorescent screen, soaking the screen surface for multiple times by using a proper amount of deionized water, standing and dissolving for ten minutes each time, obviously reducing residual potassium ions and barium ions in the screen surface by repeatedly diluting, further reducing the concentration of residual metal cations, and improving the brightness of the screen.
Description
Technical Field
The invention relates to the technical field of fluorescent screens, in particular to a process method for improving the brightness of an electron beam fluorescent screen.
Background
The electron beam fluorescent screen is often used in an electron optical system for evaluating the profile and quality of an electron beam, brightness is a key index of the electron beam fluorescent screen, and a traditional electron beam fluorescent powder coating process uses potassium silicate and barium salt to execute a gravity screen sinking process, so that the operation is simple.
The invention patent with Chinese patent number CN103311417A discloses a high-power LED fluorescent powder coating method, which comprises the following steps: adding fluorescent powder and insulating heat-conducting glue to a rubber mixing machine according to the weight ratio of 1: 4-1: 12 for mixing, clamping the glue stock in the middle by a film pressing machine after mixing uniformly, pressing the glue stock into a fluorescent powder glue film, preheating and dehumidifying a substrate after a chip is fixed on a substrate circuit, directly pasting the fluorescent powder glue film on the substrate fixed with the chip by an automatic gluing machine, and cutting the fluorescent powder glue film after the fluorescent powder glue film is cured to prepare the lamp strip. The fluorescent powder coating method has the advantages of simple process, high efficiency and low cost, can ensure the uniform coating of the fluorescent powder, ensures the uniformity of light color and improves the luminous efficiency.
However, the above method can only uniformly coat the phosphor powder in the actual use process, ensure the uniformity of light color, and improve the luminous efficiency, but the potassium ions and barium ions remaining in the phosphor screen can affect the screen brightness, and limit the energy range of the electron beam that can be detected, so a process method for improving the brightness of the electron beam phosphor screen is needed.
Disclosure of Invention
The invention aims to solve the defects that potassium ions and barium ions remained in a fluorescent screen influence the brightness of the screen and limit the energy range of an electron beam capable of being detected in the prior art, and provides a process method for improving the brightness of the electron beam fluorescent screen.
In order to achieve the purpose, the invention adopts the following technical scheme:
a process for improving the brightness of electron beam fluorescent screen includes the following steps:
the method comprises the following steps: preparing a fluorescent powder suspension: conveying the potassium silicate colloidal solution and the barium nitrate solution into a reaction vessel for stirring to form a phosphor suspension;
step two: fluorescent powder sinking: injecting the prepared fluorescent powder suspension into a glass shell, performing static settling, and pouring out waste liquid;
step three: drying by hot air flow: hot air flow is introduced into the settled fluorescent layer for drying;
step four: soaking in deionized water: soaking a screen for multiple times by using a proper amount of deionized water, wherein the soaking time is a period of time each time;
step five: and coating the soaked fluorescent screen with an organic film.
The above technical solution further comprises:
soaking in deionized water for 2-5 times, and dissolving and diluting residual potassium ions and barium ions by the deionized water.
The deionized water injected into the glass bulb is kept stand for dissolving for 10-30min.
The glass envelope dried by hot gas flow is cooled to room temperature before being soaked in deionized water.
In the process of preparing the phosphor suspension, the potassium silicate colloidal solution and the barium nitrate solution are stirred for 30-36min.
The temperature of the potassium silicate colloidal solution and the barium nitrate solution is 50-55 ℃ when mixing.
And conveying the fluorescent powder turbid liquid through an electromagnetic valve in the fluorescent powder screen sinking process, and uniformly coating the fluorescent powder turbid liquid into the glass shell through a funnel.
In the process of drying by hot air flow, the glass bulb is heated by the air flow uniformly.
Compared with the prior art, the invention has the beneficial effects that:
in the invention, the screen surface is soaked by proper amount of deionized water for multiple times, each standing and dissolving time is ten minutes, residual potassium ions and barium ions in the screen surface are obviously reduced by repeated dilution, the concentration of residual metal cations is further reduced, and the screen brightness is improved.
Drawings
FIG. 1 is a flow chart of a process for improving the brightness of an electron beam fluorescent screen according to the present invention.
Detailed Description
The technical solution of the present invention is further explained with reference to the accompanying drawings and specific embodiments.
Example one
The method comprises the following steps of firstly, conveying a potassium silicate colloidal solution and a barium nitrate solution into a reaction container to be stirred to form a fluorescent powder suspension, and stirring the potassium silicate colloidal solution and the barium nitrate solution for 30-36min in the preparation process of the fluorescent powder suspension, wherein the temperature during mixing is 50-55 ℃;
injecting the prepared fluorescent powder suspension into a glass shell, carrying out static sedimentation, conveying the fluorescent powder suspension through an electromagnetic valve in the screen sedimentation process of the fluorescent powder, uniformly coating the fluorescent powder suspension into the glass shell through a funnel, and pouring out waste liquid;
secondly, hot air flow is introduced into the settled fluorescent layer for drying, the glass envelope dried by the hot air flow is cooled to room temperature before deionized water is soaked, and the glass envelope is uniformly heated by the air flow in the hot air flow drying process;
thirdly, soaking the screen for a plurality of times by using a proper amount of deionized water, wherein the soaking time of the deionized water is 2-5 times, dissolving and diluting the residual potassium ions and barium ions by using the deionized water, and standing and dissolving the deionized water injected into the glass shell for 10-30min;
and fourthly, coating an organic film on the soaked fluorescent screen.
Example two
The method comprises the following steps of firstly, conveying a potassium silicate colloidal solution and a barium nitrate solution into a reaction container to be stirred to form a fluorescent powder suspension, and stirring the potassium silicate colloidal solution and the barium nitrate solution for 30-36min in the preparation process of the fluorescent powder suspension, wherein the temperature during mixing is 50-55 ℃;
injecting the prepared fluorescent powder suspension into a glass shell, carrying out static sedimentation, conveying the fluorescent powder suspension through an electromagnetic valve in the screen sedimentation process of the fluorescent powder, uniformly coating the fluorescent powder suspension into the glass shell through a funnel, and pouring out waste liquid;
secondly, hot air flow is introduced into the settled fluorescent layer for drying, the glass envelope dried by the hot air flow is cooled to room temperature before deionized water is soaked, and the glass envelope is uniformly heated by the air flow in the hot air flow drying process;
and thirdly, coating the organic film on the dried fluorescent screen.
EXAMPLE III
Firstly, conveying a potassium silicate colloidal solution and a barium nitrate solution into a reaction container for stirring to form a fluorescent powder suspension, and stirring the potassium silicate colloidal solution and the barium nitrate solution for 30-36min in the preparation process of the fluorescent powder suspension, wherein the temperature is 50-55 ℃ during mixing;
injecting the prepared fluorescent powder suspension into a glass shell, carrying out static sedimentation, conveying the fluorescent powder suspension through an electromagnetic valve in the screen sedimentation process of the fluorescent powder, uniformly coating the fluorescent powder suspension into the glass shell through a funnel, and pouring out waste liquid;
secondly, hot air flow is introduced into the settled fluorescent layer for drying, the glass envelope dried by the hot air flow is cooled to room temperature before deionized water is soaked, and the glass envelope is uniformly heated by the air flow in the hot air flow drying process;
thirdly, soaking the screen for a plurality of times by using a proper amount of deionized water, wherein the soaking time is 1 time, the residual potassium ions and barium ions are dissolved and diluted by using the deionized water, and the standing and dissolving time of the deionized water injected into the glass shell is 5min;
and fourthly, coating an organic film on the soaked fluorescent screen.
In conclusion, the panel is soaked in proper amount of deionized water for multiple times, each standing and dissolving time is ten minutes, the residual potassium ions and barium ions in the panel are obviously reduced through repeated dilution, the concentration of residual metal cations is further reduced, and the screen brightness is improved, and the data are as follows:
the above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A process for improving the brightness of an electron beam fluorescent screen, comprising the steps of:
the method comprises the following steps: preparing a fluorescent powder suspension: conveying the potassium silicate colloidal solution and the barium nitrate solution into a reaction vessel for stirring to form a phosphor suspension;
step two: the fluorescent powder sinks the screen: injecting the prepared fluorescent powder suspension into a glass shell, performing static settling, and pouring out waste liquid;
step three: drying by hot air flow: hot air flow is introduced into the settled fluorescent layer for drying;
step four: soaking in deionized water: soaking a screen for multiple times by using a proper amount of deionized water, wherein the soaking time is a period of time each time;
step five: and coating the organic film on the soaked fluorescent screen.
2. The process of claim 1, wherein the number of soaking in deionized water is 2-5, and the residual potassium ions and barium ions are dissolved and diluted by deionized water.
3. The process of claim 1, wherein the deionized water injected into the glass envelope is left to stand for 10-30min to dissolve.
4. A process for improving the brightness of an electron beam fluorescent screen as claimed in claim 1, wherein the envelope dried by the hot air stream is cooled to room temperature before the deionization is soaked.
5. The process for improving the brightness of an electron beam fluorescent screen as claimed in claim 1, wherein the potassium silicate colloidal solution and the barium nitrate solution are stirred for 30-36min during the preparation of the phosphor suspension.
6. The process for improving the brightness of an electron beam phosphor screen according to claim 1, wherein the temperature at which the colloidal solution of potassium silicate and the solution of barium nitrate are mixed is 50-55 ℃.
7. The method as claimed in claim 1, wherein the phosphor suspension is transported by a solenoid valve during the phosphor screen deposition process, and is uniformly applied to the glass envelope by a funnel.
8. A process for improving the brightness of an electron beam fluorescent screen as set forth in claim 1, wherein the envelope is heated uniformly by the hot air flow during the drying process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210660230.5A CN115156009A (en) | 2022-06-13 | 2022-06-13 | Process for improving brightness of electron beam fluorescent screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210660230.5A CN115156009A (en) | 2022-06-13 | 2022-06-13 | Process for improving brightness of electron beam fluorescent screen |
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| Publication Number | Publication Date |
|---|---|
| CN115156009A true CN115156009A (en) | 2022-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210660230.5A Pending CN115156009A (en) | 2022-06-13 | 2022-06-13 | Process for improving brightness of electron beam fluorescent screen |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040703A (en) * | 1988-08-25 | 1990-03-21 | Rca许可公司 | Reduce the improving one's methods of lithium silicate coating of dazzle for cathode ray tube preparation |
| CN1146063A (en) * | 1995-06-21 | 1997-03-26 | 索尼公司 | Method of forming fluorescent screen of cathode ray tube |
| CN107665799A (en) * | 2017-03-07 | 2018-02-06 | 锐晶分析仪器科技（天津）有限公司 | A kind of preparation method of fluorescent screen for transmission electron microscope |
-
2022
- 2022-06-13 CN CN202210660230.5A patent/CN115156009A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040703A (en) * | 1988-08-25 | 1990-03-21 | Rca许可公司 | Reduce the improving one's methods of lithium silicate coating of dazzle for cathode ray tube preparation |
| CN1146063A (en) * | 1995-06-21 | 1997-03-26 | 索尼公司 | Method of forming fluorescent screen of cathode ray tube |
| CN107665799A (en) * | 2017-03-07 | 2018-02-06 | 锐晶分析仪器科技（天津）有限公司 | A kind of preparation method of fluorescent screen for transmission electron microscope |
Non-Patent Citations (1)
| Title |
|---|
| 莫纯昌等: "《电真空工艺》", vol. 1, 国防工业出版社, pages: 223 - 225 * |
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