CN101840825B - Proportioning process of flat-tube screen-printing fluorescent powder - Google Patents
Proportioning process of flat-tube screen-printing fluorescent powder Download PDFInfo
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- CN101840825B CN101840825B CN2009100379799A CN200910037979A CN101840825B CN 101840825 B CN101840825 B CN 101840825B CN 2009100379799 A CN2009100379799 A CN 2009100379799A CN 200910037979 A CN200910037979 A CN 200910037979A CN 101840825 B CN101840825 B CN 101840825B
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Abstract
The invention belongs to the technical field of a screen-printing fluorescent powder proportioning process, in particular to a proportioning process of flat-tube screen-printing fluorescent powder, which comprises the following steps of: step A, proportioning ethyl cellulose, terpineol, diethylene glycol butyl ether acetate and ethyl lactate into oiling powder, wherein every 43g of ethyl cellulose is proportioned with 400ml of terpineol, 100ml of diethylene glycol butyl ether acetate and 100ml of ethyl lactate; step B: filtering the proportioned oiling powder; and step C: proportioning screen-printing fluorescent powder which is prepared by proportioning the components in parts by weight: 10 parts of P45 fluorescent white powder, 5.8 parts of P45 fluorescent blue powder and 4.8 parts of oiling powder. The quality of the fluorescent blue powder can be improved by the invention so as to improve the quality of a black-white flat CRT (Cathode Ray Tube).
Description
Technical field:
The invention belongs to fluorescent material modulation process technical field, particularly the modulation process of flat tube screen-printing fluorescent powder.
Background technology:
Along with the continuous development of national economy, the people's living standard progressively improves, and city dweller's housing condition is significantly improved, and newly-built building vigorously emerge in large numbers, and the visible dialogue system that matches with the building construction have also obtained fast development like rain the back spring bamboo.At present, in the visible dialogue system, often use black and white flat CRT CRT to realize the function that monitors.
Black and white flat CRT CRT is a kind of narrow beam strong current electron beam pipe that reappears television image by the electric light conversion, and its basic structure comprises electron gun, deflection system, phosphor screen and glass bulb.The basic functional principle of black and white flat CRT CRT is: the electron beam that electron gun is launched is added in video electrical signal on electron gun grid or the negative electrode modulate after, finally become on the phosphor screen by corresponding light signal spatial distribution, that brightness changes with the strong and weak face of the signal of telecommunication through a series of processes such as acceleration, focusing, scanning, recombination luminescence, thereby obtain the optical imagery that the suitable human-eye visual characteristic corresponding with former subject geometric similarity, light and shade requires.
Phosphor screen is one of key position of realizing the conversion of picture tube electric light, requires luminosity and luminous efficiency enough high, and luminescent spectrum is fit to eye-observation, image resolution ratio height, transmission effect are good, persistence is suitable, machinery, chemistry, Heat stability is good, life-span height.Phosphor screen is made of jointly phosphor powder layer that is coated in the glass bulb inner surface and the aluminium film of folding above phosphor powder layer.The fluorescent material of black and white flat CRT CRT generally is mixed and made into two kinds of fluorescent material, or adopts the single white powder, and manufacture method generally adopts sedimentation: the glass screen of cleaning oven dry is placed on the glue spreader, and the inclination angle and the rotating speed of glass screen all can be controlled by glue spreader; Inject electrolytical fluorescent material and waterglass suspension such as oiling barium acetate to glass screen center, open glue spreader it is evenly coated on the glass substrate, promptly form firm screen-printing fluorescent powder layer after the drying.
The luminescent properties of black and white flat CRT CRT at first depends on used screen-printing fluorescent powder material, so the modulation process of screen-printing fluorescent powder plays a part very important.In the modulation process of existing screen-printing fluorescent powder, control to impurity, dust, powder point etc. in modulated process is strict inadequately, make screen-printing fluorescent powder occur bad phenomenon such as white point, powder point, stain easily, and the allotment of the composition of screen-printing fluorescent powder is unreasonable, make screen-printing fluorescent powder viscosity and hardness not meet quality requirements, have a strong impact on the quality of black and white flat CRT CRT.
Summary of the invention:
The objective of the invention is to provide at the deficiencies in the prior art a kind of modulation process of flat tube screen-printing fluorescent powder, this technology can improve the quality of screen-printing fluorescent powder, thereby improves the quality of black and white flat CRT CRT.
For achieving the above object, the present invention adopts following technical scheme: the modulation process of flat tube screen-printing fluorescent powder, and it may further comprise the steps:
Steps A, powder oil in the modulation, last powder oil composition is ethyl cellulose, terpinol, butyl carbitol acetate, ethyl lactate; Join 400 milliliters of terpinols by per 43 gram ethyl celluloses, 100 milliliters of butyl carbitol acetates, the ratio of 100 milliliters of ethyl lactates is modulated;
Step B carries out filtration treatment to the last oil-bound distemper that modulates;
Step C, the modulation screen-printing fluorescent powder, screen-printing fluorescent powder is a P45 fluorescent material white powder by forming weight ratio: P45 fluorescent material blue powder: the last oil-bound distemper after the filtration=modulate at 10: 5.8: 4.8.
In the steps A, powder oil is specially in the described modulation:
Earlier successively terpinol, butyl carbitol acetate, ethyl lactate, ethyl cellulose are poured in the beaker and modulated by proportion of composing;
The material that modulates is put into the mixer of band heater again, stirred simultaneously and heat, mixing time is more than 12 hours, and heating-up temperature is 80 degree ± 5 degree.
Among the step B, described filtration treatment is specially:
Use 400 order screen packs to carry out twice natural filtration earlier;
Re-use 600 order screen packs and carry out pressure filtration.
Among the step C, described modulation screen-printing fluorescent powder is specially:
Last oil-bound distemper after filtering is added in the agitator tank, and weight ratio adds P45 fluorescent material white powder and P45 fluorescent material blue powder stirs by forming again; After stirring, heating was placed 4 hours, stirred 30 minutes again, and heating was placed 4 hours then; The mixer of the material of placing in the agitator tank being put into the band heater adds thermal agitation, and mixing time is more than 8 hours, and heating-up temperature is 80 degree.
After the mixer that the material of placing in the agitator tank is put into the band heater stirs 30 minutes, after clearing up, material on the mixer tank skin continues again to stir to being bonded at.
Beneficial effect of the present invention: the modulation process that adopts flat tube screen-printing fluorescent powder of the present invention, be implemented in the modulated process strictness control to impurity, dust, powder point etc., avoid screen-printing fluorescent powder bad phenomenon such as white point, powder point, stain to occur as far as possible, and the allotment of the composition of screen-printing fluorescent powder rationally, make screen-printing fluorescent powder viscosity and hardness meet quality requirements, thereby improve the quality of black and white flat CRT CRT.
Embodiment:
The present invention is further illustrated with embodiment below:
Powder oil is gone up in modulation earlier, and last powder oil composition is ethyl cellulose, terpinol, butyl carbitol acetate, ethyl lactate; Join 400 milliliters of terpinols by per 43 gram ethyl celluloses, 100 milliliters of butyl carbitol acetates, the ratio of 100 milliliters of ethyl lactates is modulated.As when modulating 1 jar of screen-printing fluorescent powder, last powder oil is by consisting of 43 gram ethyl celluloses, 400 milliliters of terpinols, and 100 milliliters of butyl carbitol acetates, the ratio of 100 milliliters of ethyl lactates is prepared; When modulating 5 jars of screen-printing fluorescent powders, last powder oil restrains ethyl celluloses by consisting of 215,2000 milliliters of terpinols, and 500 milliliters of butyl carbitol acetates, the ratio of 500 milliliters of ethyl lactates is prepared.
The material that above metering is definite is poured in the beaker by the order of terpinol, butyl carbitol acetate, ethyl lactate, ethyl cellulose successively and is modulated; The material that modulates is put into the mixer of band heater, stir simultaneously and heat, mixing time is more than 12 hours, and heating-up temperature is 80 degree ± 5 degree.The last powder oil that stirs is should visually clear transparent, does not have residual undissolved ethyl cellulose.
For guaranteed quality, the last oil-bound distemper that modulates is carried out filtration treatment, be specially: use 400 order screen packs to carry out twice natural filtration earlier, the various impurity in the last powder oil, dust etc. are removed; Re-use 600 order screen packs and carry out pressure filtration, the insoluble matter in the ethyl cellulose in the last powder oil is removed.
Modulate screen-printing fluorescent powder at last, screen-printing fluorescent powder is a P45 fluorescent material white powder by forming weight ratio: P45 fluorescent material blue powder: the last oil-bound distemper after the filtration=modulate at 10: 5.8: 4.8.Be specially: the gram of 480 ± 1 after will filtering is gone up oil-bound distemper and is added in the agitator tank, add 1000 gram P45 fluorescent material white powder again and 580 gram P45 fluorescent material blue powders carry out manual stirring, observe during manual the stirring stir substantially after, heat and placed 4 hours, carry out craft again and stirred 30 minutes, heating was placed 4 hours then; The mixer of the material of placing in the agitator tank being put into the band heater adds thermal agitation, and mixing time is more than 8 hours, and heating-up temperature is 80 degree.After the mixer that the material of placing in the agitator tank is put into the band heater stirs 30 minutes, need continue again to stir after material on the mixer tank skin is cleared up, note regulating suitable mixing speed being bonded at.Thus, finish the modulation of screen-printing fluorescent powder.
The modulation process of flat tube screen-printing fluorescent powder of the present invention can change the viscosity of going up powder oil by the amount of ethyl cellulose being carried out suitable adjustment, can change the viscosity of silk-screen powder.By the amount of suitable adjustment ethyl lactate, can change rate of drying.Amount by suitable adjustment butyl carbitol acetate can change dried hardness.
Owing to being subjected to material and environmental limit and influencing, for the powder point control after the screen-printing fluorescent powder modulation is a long-term Control work, so in the modulated process of screen-printing fluorescent powder, need the strictness control of overall process, comprise the control of the inspection, keeping, secondary pollution, dust, filtration etc. of environmental sanitation, material packing.Adopt the modulation process of flat tube screen-printing fluorescent powder of the present invention, accomplish that the strictness to impurity, dust, powder point etc. is controlled in modulated process, avoid screen-printing fluorescent powder bad phenomenon such as white point, powder point, stain to occur as far as possible, and the allotment of the composition of screen-printing fluorescent powder rationally, make screen-printing fluorescent powder viscosity and hardness meet quality requirements, thereby improve the quality of black and white flat CRT CRT.
The above only is a better embodiment of the present invention, so all equivalences of doing according to the described structure of patent claim of the present invention, feature and principle change or modify, is included in the patent claim of the present invention.
Claims (5)
1. the modulation process of flat tube screen-printing fluorescent powder is characterized in that, it may further comprise the steps:
Steps A, powder oil in the modulation, last powder oil composition is ethyl cellulose, terpinol, butyl carbitol acetate, ethyl lactate; Join 400 milliliters of terpinols by per 43 gram ethyl celluloses, 100 milliliters of butyl carbitol acetates, the ratio of 100 milliliters of ethyl lactates is modulated;
Step B carries out filtration treatment to the last oil-bound distemper that modulates;
Step C, the modulation screen-printing fluorescent powder, screen-printing fluorescent powder is a P45 fluorescent material white powder by forming weight ratio: P45 fluorescent material blue powder: the last oil-bound distemper after the filtration=modulate at 10: 5.8: 4.8.
2. the modulation process of flat tube screen-printing fluorescent powder according to claim 1 is characterized in that, in the steps A, powder oil is specially in the described modulation:
Earlier successively terpinol, butyl carbitol acetate, ethyl lactate, ethyl cellulose are poured in the beaker and modulated by proportion of composing;
The material that modulates is put into the mixer of band heater again, stirred simultaneously and heat, mixing time is more than 12 hours, and heating-up temperature is 80 degree ± 5 degree.
3. the modulation process of flat tube screen-printing fluorescent powder according to claim 1 is characterized in that, among the step B, described filtration treatment is specially:
Use 400 order screen packs to carry out twice natural filtration earlier;
Re-use 600 order screen packs and carry out pressure filtration.
4. the modulation process of flat tube screen-printing fluorescent powder according to claim 1 is characterized in that, among the step C, described modulation screen-printing fluorescent powder is specially:
Last oil-bound distemper after filtering is added in the agitator tank, and weight ratio adds P45 fluorescent material white powder and P45 fluorescent material blue powder stirs by forming again; After stirring, heating was placed 4 hours, stirred 30 minutes again, and heating was placed 4 hours then; The mixer of the material of placing in the agitator tank being put into the band heater adds thermal agitation, and mixing time is more than 8 hours, and heating-up temperature is 80 degree.
5. the modulation process of flat tube screen-printing fluorescent powder according to claim 4, it is characterized in that: after the mixer that the material of placing in the agitator tank is put into the band heater stirs 30 minutes, continue again to stir after material on the mixer tank skin is cleared up being bonded at.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100379799A CN101840825B (en) | 2009-03-17 | 2009-03-17 | Proportioning process of flat-tube screen-printing fluorescent powder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100379799A CN101840825B (en) | 2009-03-17 | 2009-03-17 | Proportioning process of flat-tube screen-printing fluorescent powder |
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| CN101840825A CN101840825A (en) | 2010-09-22 |
| CN101840825B true CN101840825B (en) | 2011-12-28 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0750331A2 (en) * | 1995-06-21 | 1996-12-27 | Sony Corporation | Method of forming fluorescent screen of cathode ray tube |
| CN1507644A (en) * | 2001-05-10 | 2004-06-23 | 株式会社东芝 | Method of forming fluorescent surface and image display unit |
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2009
- 2009-03-17 CN CN2009100379799A patent/CN101840825B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0750331A2 (en) * | 1995-06-21 | 1996-12-27 | Sony Corporation | Method of forming fluorescent screen of cathode ray tube |
| CN1507644A (en) * | 2001-05-10 | 2004-06-23 | 株式会社东芝 | Method of forming fluorescent surface and image display unit |
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| CN101840825A (en) | 2010-09-22 |
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Granted publication date: 20111228 Termination date: 20130317 |