CN1050372C - Film-forming material solution - Google Patents
Film-forming material solution Download PDFInfo
- Publication number
- CN1050372C CN1050372C CN90106615A CN90106615A CN1050372C CN 1050372 C CN1050372 C CN 1050372C CN 90106615 A CN90106615 A CN 90106615A CN 90106615 A CN90106615 A CN 90106615A CN 1050372 C CN1050372 C CN 1050372C
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- CN
- China
- Prior art keywords
- weight
- forming material
- material solution
- film forming
- solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A material solution forming the film used for luminescent screen manufacture technology of colored cathode-ray tube is provided, wherein the solution contains polyvinyl alcohol, acrylic acid emulsion, and pure water, and also contains polyacrylic acid resin water emulsion as thickening agent. The solution is improved on luminosity factor, preventing the made spots on the luminescent screen because of the emulsion film.
Description
The present invention relates to a kind of film forming material solution, particularly the working procedure of coating of film forming material solution is employed a kind of through improved film forming material solution in the color cathode ray tube screen manufacturing process.
In general, the panel of color cathode ray tube normally applies like this: the black matrix of the striated pattern that the light absorbing material of elder generation's formation image-stone China ink and so on the internal surface of panel is made, red, green, blue fluorescent material on alternating deposition between each black matrix forms fluorescent layer thus then.
For improving luminosity factor, strengthen current potential and prevent that fluorescent layer from burning, on fluorescent layer, form the metal illuvium that aluminium etc. is formed.But if metal directly is deposited on the fluorescent layer, then metallic vapor can be invaded in the fluorescent layer, causes the degradation of metal level, and fluorescent layer is rough, thereby is difficult to form the even metal illuvium.
So for fluorescent layer and metal illuvium are separated, and make the fluorescent layer smooth surface, coating between fluorescent layer and metal illuvium with acrylic acid or the like emulsion usually is the film forming material solution of basic raw material.
Described film forming solution is invaded in deposition process between each particle layer of fluorescence panel in order to prevent metallic vapor.
Described film forming material solution reply panel inner surface and fluorescent layer have new uniformly and power.
Has the mixture that the film forming general material solution of these performances is normally mixed by acrylic acid or the like emulsion, polyvinyl alcohol (PVA), pure water and some additives.After being completed into, this solution is injected fluorescent layer the internal surface of panel at once, and rotary panel, this solution is coated on the whole surface.In described working procedure of coating, coated film forming material solution spreads all over the total inner surface of panel, and some solution is deposited on panel surface as overlay.The twirl panel is removed these excessive solution thereby make unnecessary film forming material solution throw away panel then.
When described excessive solution flows on panel inner surface, stayed the material train, this can make the in uneven thickness of film.
If the weight ratio of acrylic acid or the like emulsion and polyvinyl alcohol surpasses a certain ratio, then produce stain because of the adaptability effect in the drying process on the overlay, this stain also appears at when changing another batch of material on the panel of cathode tube at every turn, thereby reduces the luminosity factor of cathode tube.
In addition, because the slickness variation of color cathode ray tube internal surface, the slickness of aluminium illuvium is variation also, so caused the problem of local bulging or slabbing peeling phenomenon.
The objective of the invention is provides use in the color cathode ray tube a kind of can form homogeneous thickness, the unlikely film forming material solution that forms flow of solution train or stain on the coating that panel inner surface forms by the ratio of components of improveing film forming material solution.
For achieving the above object, the film forming material solution that the present invention comprises polyvinyl alcohol, acrylic acid or the like emulsion and pure water has such characteristics, and promptly it adds the polyacrylic resin water miscible liquid that has as thickening material.
The following describes the process that film forming material solution of the present invention is made color cathode ray tube screen of using.
The fluorescent layer forming process comprises following each operation: slurries coating → drying → exposure → development → drying, said process carries out on the colour cathode ray tube internal surface, then described panel is sent to film forming material solution and applies workshop section.Then described solution is coated with whole surface all over the panel that sends in the coating workshop section of film forming material solution.Then described panel is sent to dry workshop section and carries out drying, and then be sent to general aluminium vacuum deposition workshop section.
In the working procedure of coating of film forming material solution of the present invention, the polyacrylic resin water miscible liquid is added as thickening material, to reduce the amount of polyvinyl alcohol, till regulating the concentration and pH value of compatibility loss range and described solution by the amount of regulating polyvinyl alcohol and pure water, the milkiness liquid layer of irregular formation is then removed by means of the compatibility loss in coating process.
If film forming material solution is 100% weight, then the deal of added other composition preferably: the polyacrylic resin water miscible liquid is 0.5 to 1.3% weight, polyvinyl alcohol is 19 to 24% weight, and acrylate emulsion is 38 to 43% weight, and pure water is 29 to 35% weight.
Describe optimal reference example of the present invention, comparative example and example below in detail.
Reference example
Pure water 25.5% weight
Acrylic acid or the like emulsion (B-74) (Rohm ﹠amp; Hass company produces) 40.3% weight
Ammonium oxalate 3.2% weight
Hydrogen peroxide (H
2O
2) 0.8% weight
Glycerine 1.6% weight
2% polyvinyl alcohol, 28.2% weight
Ammonium hydroxide (NH
4OH) a small amount of
With the above-mentioned substance thorough mixing, add minor N H
4OH to be to regulate the pH value of mixture, makes it in 6.8 to 7.0 scope, and with viscosity adjustment to 0.170 to 0.176 dyne-second/centimetre
2So just drawn desired film forming material solution.
Comparative example 1
Do not add H
2O
2Situation
Pure water 21.5% weight
Acrylic acid or the like emulsion (B-74) 40.3% weight
Ammonium oxalate 8.1% weight
Glycerine 1.6% weight
2% polyvinyl alcohol, 28.2% weight
Ammonium hydroxide is a small amount of
With the above-mentioned substance thorough mixing, add minor N H then
4OH makes it reach 6.9 to 7.0 scope with the pH value of regulating mixture, and with its viscosity adjustment to 0.170 to 0.176 dyne-second/centimetre
2So just draw desired film forming material solution.
Comparative example 2
Add the polyacrylic resin water miscible liquid but do not add the situation of polyvinyl alcohol
Removing the pure water amount is 45.9% weight, and polyacrylic resin water and milk liquid measure is outside 3.7% weight, and program is undertaken by comparative example 1 same mode.So draw desired film forming material solution.
Example
Pure water 31.3% weight
Acrylic acid or the like emulsion 40.3% weight
Ammonium oxalate 3.2% weight
Hydrogen peroxidase 10 .8% weight
Glycerine 1.6% weight
2% polyvinyl alcohol, 21.8% weight
Polyacrylic resin water miscible liquid (3.5% G-110) 0.8% weight
Ammonium hydroxide is a small amount of
With the above-mentioned substance thorough mixing, add minor N H then
4OH makes it reach 6.8 to 7.0 scope with the pH value of regulating mixture, adds polyacrylic resin water miscible liquid (3.5% G-110, Rohm ﹠amp again; Hass company produces) so as with the viscosity adjustment of mixture to 0.170-0.176 dyne-second/centimetre
2So just draw desired film forming material solution.
When being coated to the film forming material solution that so draws on the fluorescent layer, its result is as shown in table 1.
Table 1
| Stain appears on fluorescent layer when changing another batch of material | Aluminium in drying process because of producing milkiness liquid layer bulging occasionally | Aluminium ruptures in the panel side | The emission relation | Gel state | |
| Reference example | ○ | ○ | △ | Difference | ○ |
| Comparative example 1 | ○ | × | ○ | ″ | ○ |
| Comparative example 2 | × | ○ | ○ | ″ | × |
| Example | × | × | × | Good | × |
Annotate: zero expression " existence ".
△ represents " a small amount of existence is arranged ".
* expression " not existing ".
As can be seen from Table 1, film forming material solution of the present invention is this polyvinyl alcohol, and by adding the polyacrylic resin water miscible liquid, formation state on the fluorescent layer in changing another batch polyacrylic resin water miscible liquid process keeps evenly, thereby emission brightness height, prevented to have a stain on the film form layers, eliminated that aluminium expands and the phenomenon of fracture, and need not in the process of changing batch, to lose time and seek correct treatment condition.
As mentioned above, film forming material solution of the present invention is by adding thickening material and produce by the amount of control polyvinyl alcohol in general film forming material solution, then described solution being coated with all over fluorescent layer to form the window of tube of color cathode ray tube.Film forming material solution of the present invention can be avoided the stain that forms because of the milkiness liquid layer on the fluorescent layer, in changing batch process, need not suitable treatment condition, improve the luminosity factor characteristic, but also can reclaim the film forming material solution of being removed, reuse.
Claims (4)
1. a film forming material solution comprises polyvinyl alcohol, acrylic acid or the like emulsion and pure water,
It is characterized in that this solution also comprises, is 100% weight according to described film forming material solution, as the polyacrylic resin water miscible liquid of 0.5 to 1.3% weight of thickening material,
The amount of described polyvinyl alcohol is in the scope of 19 to 24% weight, and the amount of described acrylic acid or the like emulsion is in the scope of 38 to 43% weight, and the amount of described pure water is in the scope of 29 to 35% weight;
The pH value of described solution is 6.8-7.0, and above-mentioned each component sum equals 100%.
2. according to the film forming material solution of claim 1, it is characterized in that also comprising the ammonium oxalate of 3.2% weight.
3. according to the film forming material solution of claim 1, it is characterized in that also comprising the glycerine of 1.6% weight.
4. according to the film forming material solution of above-mentioned arbitrary claim, it is characterized in that also comprising a small amount of ammonium hydroxide.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019890015863A KR930003382B1 (en) | 1989-11-02 | 1989-11-02 | Composion of film former |
| KR15863/89 | 1989-11-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1051372A CN1051372A (en) | 1991-05-15 |
| CN1050372C true CN1050372C (en) | 2000-03-15 |
Family
ID=19291278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN90106615A Expired - Fee Related CN1050372C (en) | 1989-11-02 | 1990-07-30 | Film-forming material solution |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR930003382B1 (en) |
| CN (1) | CN1050372C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5626935A (en) * | 1979-08-08 | 1981-03-16 | Denki Kagaku Kogyo Kk | Resin solution for surface treatment of film and surface treating method of film |
| US4280942A (en) * | 1980-07-09 | 1981-07-28 | Formica Corporation | Aqueous acrylic contact adhesive |
| JPS5738121A (en) * | 1980-08-20 | 1982-03-02 | Idemitsu Petrochem Co Ltd | Formation of heat insulating layer |
-
1989
- 1989-11-02 KR KR1019890015863A patent/KR930003382B1/en not_active IP Right Cessation
-
1990
- 1990-07-30 CN CN90106615A patent/CN1050372C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5626935A (en) * | 1979-08-08 | 1981-03-16 | Denki Kagaku Kogyo Kk | Resin solution for surface treatment of film and surface treating method of film |
| US4280942A (en) * | 1980-07-09 | 1981-07-28 | Formica Corporation | Aqueous acrylic contact adhesive |
| JPS5738121A (en) * | 1980-08-20 | 1982-03-02 | Idemitsu Petrochem Co Ltd | Formation of heat insulating layer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1051372A (en) | 1991-05-15 |
| KR910009873A (en) | 1991-06-28 |
| KR930003382B1 (en) | 1993-04-26 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |