CN102134422B - Anti-static protective coating for metal intensifying screen - Google Patents
Anti-static protective coating for metal intensifying screen Download PDFInfo
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- CN102134422B CN102134422B CN 201010613943 CN201010613943A CN102134422B CN 102134422 B CN102134422 B CN 102134422B CN 201010613943 CN201010613943 CN 201010613943 CN 201010613943 A CN201010613943 A CN 201010613943A CN 102134422 B CN102134422 B CN 102134422B
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- intensifying screen
- concentration
- metal intensifying
- coating
- metal
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Abstract
The invention discloses an anti-static protective coating for a metal intensifying screen, which is used for conventional radiography. The anti-static protective coating for the metal intensifying screen is prepared from the following components by weight: indefinite-form colloidal V205 with the concentration ranging from 1 to 20g/l, accelerating agents with the concentration ranging from 0.1 to 2g/l, cellulose acetate with the concentration ranging from 10 to 20g/l, anionic wetting agents with the concentration ranging from 1 to 5g/l and lubricating agents with the concentration ranging from 0.1 to 3g/l. The coating can improve the anti-static property of the metal intensifying screen, and avoid the pseudomorphism of a negative plate of an industrial radiographic film, which is caused by static electricity in the process of conventional radiography. The coating ensures the matching between the metal intensifying screen and the industrial radiographic film in the wide range of humidity of operating environment in a darkroom, and avoids the static electricity.
Description
Technical field
The present invention relates to the roentgenogramX metal intensifying screen of conventional ray detection technology, specifically, relate to a kind of metal intensifying screen anti-static type supercoat.
Background technology
In recent years, the competition development of novel detection techniques such as conventional silver halide sensitive materials and new digital information-recording material, conventional roentgenogramX detection technique and digital radial detection, industrial radiographic film film image information is directly perceived, the archives keeping quality, obtains re-recognizing and affirming of people.At present, Chang Yong intensifying screen has three kinds of metal intensifying screen, salt screen and metal salt screens.Wherein with metal intensifying screen gained egative film picture element the best, the metal salt screen takes second place, and salt screen is the poorest, but metal intensifying screen Intensifying factor is minimum.
Intensifying factor refers to that film is certain, ray line matter is certain, one timing of darkroom treatment condition, obtains same blackness egative film, without the exposure E of intensifying screen
0And the ratio between the exposure E when using intensifying screen, namely
Q＝E
0/E
The metal intensifying screen generally is that (material is lead alloy the most generally with thin tinsel; contain antimony and tin about 5%) be bonded on the paper substrate or PET (polyethylene terephthalate) film of high-quality, the protective layer (main material is the Nitrocellulose ester) of surface tear, wearing and tearing, surface blot easy to clean is avoided in top-level design.
Salt screen is that fluorescence sensitizing coating (main component calcium wolframate and tackiness agent) is coated on the high-quality paper substrate top-level design supercoat.When salt screen and sensitizing type industrial radiographic film were used, Intensifying factor was very big, and the gained film image is fuzzy, poor definition, sensitivity are low.Salt screen is not generally used in the weld seam roentgenogramX.
The metal salt screen is that lead foil is bonded on the paper substrate of high-quality, again at lead foil coating fluorescence sensitizing coating, top-level design supercoat.When being used with non-sensitizing type industrial radiographic film, the egative film when egative film sharpness and defect resolution are better than fluorescence sensitizing still, can not be used for the high quality ray detection.
Under the normal condition, metal intensifying screen and industrial radiographic film are used the most general.The Nitrocellulose ester protective layer on metal intensifying screen upper strata has higher surface resistivity and bigger frictional coefficient.Exposure back intensifying screen throws open, film takes out fast, is very easy to produce electrostatic phenomenon, causes the egative film pseudomorphism; Friction between film and the intensifying screen, intensifying screen protective layer easily weares and teares.
By in coating, introducing the electroconductibility of organic or inorganic electrolyte, raising coating, it is the way commonly used that coating improves antistatic property.But this coating often has the certain moisture ability, thereby its antistatic property is subjected to the influence of ambient moisture, that is: when ambient moisture was low, antistatic property was poor; When ambient moisture was big, the glutinous generation static trend on film surface that connects of coating was much larger than anlistatig conductive capability.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the deficiencies in the prior art, and the anti-static type supercoat of a kind of conventional roentgenogramX with the metal intensifying screen is provided.
Metal intensifying screen anti-static type supercoat of the present invention is made up of according to described siccative weight meter following component: indefinite form colloidal state V
2O
5Concentration 1-20g/l, promoter concentration 0.1-2g/l, cellulose acetate ester concentration 10-20g/l, anionic concentration of wetting agent 1-5g/l, lubricant concentration 0.1-3g/l.
Described promotor is MoO
3, WO
3, NaPO
3Or Na
3PO
4Described lubricant is palm wax or colloidal state silicon.
Metal intensifying screen anti-static type supercoat of the present invention is coated on metal intensifying screen upper strata; Glue spread scope 10-30mg/m
2
Electro-conductive material V of the present invention
2O
5Be to have polymer molecular structure, water-based or wetting ability colloidal state, promotor is (as MoO
3, WO
3And NaPO
3, Na
3PO
4) as the vitreous state forming agent, binding agent is selected acetyl cellulose for use, tensio-active agent is selected the anionic wetting agent for use, and lubricant selects for use palm wax or colloidal state silicon to reduce the coating frictional coefficient.
Coating of the present invention can improve the antistatic performance of metal intensifying screen, avoids static in the conventional roentgenogramX process to cause the pseudomorphism of industrial radiographic film egative film.Coating of the present invention satisfies the humidity of dark room operation environment in broad range, and metal intensifying screen and industrial radiographic film are used, and avoids producing static.Especially, under the low humidity condition, antistatic effect is obvious; Under the high humidity, avoid taking place glutinous company of metal intensifying screen and industrial radiographic film causing static.
Embodiment
Below the present invention is described further.
Metal intensifying screen anti-static type supercoat of the present invention is made up of according to described siccative weight meter following component: indefinite form colloidal state V
2O
5Concentration 1-20g/l, promoter concentration 0.1-2g/l, cellulose acetate ester concentration 10-20g/l, anionic concentration of wetting agent 1-5g/l, lubricant concentration 0.1-3g/l.
Example 1: coating formula binding agent acetyl cellulose (concentration 10-20g/l, siccative weight meter), indefinite form colloidal state V
2O
5Electro-conductive material concentration is respectively 1,5 and 10g/l (in siccative weight), with air knife hydrostomia coating method, will be coated with feed liquid and be coated in paper substrate metal intensifying screen surface, warm air drying.Glue spread: 10-30mg/m
2
20 ℃ of temperature, under relative humidity 50%, 30% and 15% condition, difference test surfaces resistance (according to the ASTMD257-67 standard, test surfaces resistance), the result is as follows:
Along with indefinite form colloidal state V
2O
5Electro-conductive material concentration increases, the considerable change of coatingsurface resistance, especially in humidity than under the low condition, the result is more obvious.
Example 2: coating formula binding agent acetyl cellulose (concentration 10-20g/l, siccative weight meter), indefinite form colloidal state V
2O
5Electro-conductive material (concentration 1g/l is in siccative weight), captax oO
3Concentration is respectively 0 and 0.2g/l (siccative weight meter), with air knife hydrostomia coating method, will be coated with feed liquid and be coated in paper substrate metal intensifying screen surface, warm air drying.Glue spread: 10-30mg/m
2
20 ℃ of temperature, under relative humidity 50%, 30% and 15% condition, difference test surfaces resistance (according to the ASTMD257-67 standard, test surfaces resistance), the result is as follows:
Along with captax oO
3Concentration increases, and coatingsurface resistance descends.
Example 3: coating formula comprises indefinite form colloidal state V
2O
5Electro-conductive material (concentration 4-6g/l, siccative weight meter), captax oO
3(concentration 0.1-1g/l, siccative weight meter), binding agent acetyl cellulose (concentration 10-20g/l, siccative weight meter), wetting agent TX100 (polyoxyethylene octylphenol ether) (concentration 1-5g/l, siccative weight meter), lubricant colloidal state silicon (concentration 0.1-3g/l, siccative weight meter), with air knife hydrostomia coating method, will be coated with feed liquid and be coated in paper substrate metal intensifying screen surface, warm air drying.Glue spread: 10-30mg/m
2
20 ℃ of temperature, under relative humidity 50%, 30% and 15% condition, test surfaces resistance is 8 * 10 respectively
6Ω, 10 * 10
6Ω, 12 * 10
6Ω.
Although coatingsurface resistance slightly raises,, increase the coating processing property that wetting agent has improved coating fluid, add the glutinous company that lubricant has been avoided metal intensifying screen protective layer and industrial radiographic film surface under the high humidity.
Embodiment recited above is described the preferred embodiment for the present invention; be not that the spirit and scope of the present invention are limited; under the prerequisite that does not break away from design philosophy of the present invention; common engineering technical personnel make technical scheme of the present invention in this area various distortion and improvement all should belong to protection scope of the present invention.
Claims (1)
1. a metal intensifying screen anti-static type supercoat is characterized in that, is made up of according to described siccative weight meter following component: indefinite form colloidal state V
2O
5Concentration 1-20g/L, promoter concentration 0.1-2g/L, cellulose acetate ester concentration 10-20g/L, anionic concentration of wetting agent 1-5g/L, lubricant concentration 0.1-3g/L, described promotor is MoO
3, WO
3, NaPO
3Or Na
3PO
4, described lubricant is palm wax or colloidal state silicon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010613943 CN102134422B (en) | 2010-12-30 | 2010-12-30 | Anti-static protective coating for metal intensifying screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010613943 CN102134422B (en) | 2010-12-30 | 2010-12-30 | Anti-static protective coating for metal intensifying screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102134422A CN102134422A (en) | 2011-07-27 |
| CN102134422B true CN102134422B (en) | 2013-07-03 |
Family
ID=44294360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010613943 Expired - Fee Related CN102134422B (en) | 2010-12-30 | 2010-12-30 | Anti-static protective coating for metal intensifying screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102134422B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105415911A (en) * | 2015-12-25 | 2016-03-23 | 天津美迪亚影像材料有限公司 | Gold card for ink-jet printing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4943727A (en) * | 1987-01-21 | 1990-07-24 | Fuji Photo Film Co., Ltd. | Radiographic intensifying screen |
| US5477053A (en) * | 1993-06-10 | 1995-12-19 | Kasei Optonix, Ltd. | Radiographic intensifying screen and process for preparing the same |
| CN1160451A (en) * | 1994-10-07 | 1997-09-24 | 美国3M公司 | Method for manufacture of radiographic intensifying screen with fluorinated surfactant |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2879767B1 (en) * | 2004-12-17 | 2007-03-09 | Eastman Kodak Co | SYSTEM FOR INDUSTRIAL RADIOGRAPHY |
-
2010
- 2010-12-30 CN CN 201010613943 patent/CN102134422B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4943727A (en) * | 1987-01-21 | 1990-07-24 | Fuji Photo Film Co., Ltd. | Radiographic intensifying screen |
| US5477053A (en) * | 1993-06-10 | 1995-12-19 | Kasei Optonix, Ltd. | Radiographic intensifying screen and process for preparing the same |
| CN1160451A (en) * | 1994-10-07 | 1997-09-24 | 美国3M公司 | Method for manufacture of radiographic intensifying screen with fluorinated surfactant |
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| Publication number | Publication date |
|---|---|
| CN102134422A (en) | 2011-07-27 |
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Granted publication date: 20130703 Termination date: 20201230 |
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| CF01 | Termination of patent right due to non-payment of annual fee |