CN100462408C - Ultraviolet ray blocking protecting film powder slurry and its coating method to inner wall of pipe - Google Patents
Ultraviolet ray blocking protecting film powder slurry and its coating method to inner wall of pipe Download PDFInfo
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- CN100462408C CN100462408C CNB2006100524445A CN200610052444A CN100462408C CN 100462408 C CN100462408 C CN 100462408C CN B2006100524445 A CNB2006100524445 A CN B2006100524445A CN 200610052444 A CN200610052444 A CN 200610052444A CN 100462408 C CN100462408 C CN 100462408C
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Abstract
The present invention discloses ultraviolet ray blocking protecting film powder slurry and its coating method to inner wall of lamp tube. Titania, preferably of rutile type or anatase type, of grain size of 10-100 nm and water, preferably deionized water, is compounded into slurry of concentration 0.3-12 wt%, preferably 0.5-10 wt%. The slurry is coated to the inner surface of lamp tube and dried with hot blast of 80-140 deg.c to form a coating of 50-1500 nm, preferably 100-1000 nm, thickness. The present invention has the positive effects of low ultraviolet transmittance, high visible light transmittance, stable performance, long service life, etc.
Description
Technical field
The present invention relates to a kind of manufacturing process of fluorescent tube, specifically relate to the shielding of ultraviolet width of cloth and penetrate the coating method of using protective membrane powder slurry and fluorescent tube.
Background technology
In the fluorescent tube production, adopt the alumina protective layer coating technology at present mostly, the fluorescent tube that this method manufactures still has a spot of ultraviolet ray to reveal, though perhaps solved ultraviolet leakage, is cost to influence other performances.As disclosing a kind of hg fluorescent lamp that contains among the Japanese Patent JP 2002268481; wherein at first apply the protective membrane of one deck ultra-fine alumina etc.; apply fluorescent material again, thereby effectively reduce the sodium amalgam that the sodium in mercury and the glass lamp forms, make the lux maintenance of luminescent lamp that large increase arranged.But employedly be〉ultra-fine alumina, titanium dioxide, silicon-dioxide and the zirconium white of 200nm; though improved lux maintenance,, visible light absorbed to some extent because these protective film are thicker; thereby reduced initial luminous flux, what also make simultaneously lamp seals and docks difficulty in process.And these protective membranes do not absorb ultraviolet ray, can not reduce ultraviolet leakage.In Japanese Patent JP 8937686, mention and use titanium dioxide and zinc oxide coated to absorb ultraviolet ray, thereby effectively reduce ultraviolet leakage in the fluorescent tube outside surface, but to the lux maintenance that improves luminescent lamp without any help.
There is strict demand in some country to ultraviolet amount of leakage now, is difficult to break through its technology barriers by existing protective membrane coating technology.
Summary of the invention
What the present invention will overcome is the above-mentioned defective that exists in the prior art, provides a kind of novel shielding of ultraviolet width of cloth to penetrate with protective membrane powder slurry.
The present invention also will provide a kind of shielding of ultraviolet width of cloth to penetrate the preparation method who starches with the protective membrane powder.
The present invention also will provide a kind of coating technology that adopts this protective membrane powder slurry to carry out fluorescent tube, is intended to simplify the operation, and improves the qualification rate and the lux maintenance of product, is easy to reclaim the bad phosphor powder tube of coating, reduces cost of manufacture.
For solving the problems of the technologies described above, the present invention by the following technical solutions: be made into the slurry that weight ratio is 0.3-12Wt% with titanium dioxide powder and water.
Described water is preferably deionized water; described titanium dioxide is preferably rutile-type or Detitanium-ore-type; described titanium dioxide coarseness is preferably 10-100nm, and described protective membrane concentration is preferably 0.5-10Wt%, and described hot-blast furnace temperature is preferably 95-130 degree centigrade.
The protective membrane powder slurry that a kind of shielding of ultraviolet is used is at the coating method of exposed conduit inwall; be made into the powder slurry that weight ratio is 0.3-12Wt% with titanium dioxide powder and water; described powder slurry is coated on the exposed conduit internal surface with the method that spraying or suction are coated with; applied thickness is 50-1500nm, and is dry in 80-140 degree centigrade hotblast stove then.Described coat-thickness is preferably 100-1000nm.
Employing the invention has the beneficial effects as follows: ultraviolet ray transmissivity is low, the lux maintenance height, and stable performance, the life-span is long, and is simple to operate, and cost is low, can conveniently reclaim the bad phosphor powder tube of coating, and is easy to promote.
Embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1
Being averaged particle diameter is that 10nm, slurry concentration are the rutile titanium dioxide of 0.3wt%, is coated on 20W three U the inner surface of tube with spraying method, and film thickness is 50nm, dry in 80 degrees centigrade hotblast stove then, makes the 20W electricity-saving lamp; It is 1.87 μ w/cm that its ultraviolet ray sees through power
2, initial luminous flux is 1250Lm, and lux maintenance was 79% in 4000 hours, and the life-span reaches 8000 hours.
Embodiment 2
Being averaged particle diameter is that 10nm, slurry concentration are the anatase titanium dioxide of 0.5wt%, is coated on 20W three U the inner surface of tube with spraying method, and film thickness is 100nm, dry in 95 degrees centigrade hotblast stove then, makes the 20W electricity-saving lamp; It is 1.31 μ w/cm that its ultraviolet ray sees through power
2, initial luminous flux is 1230Lm, and lux maintenance was 81% in 4000 hours, and the life-span reaches 10000 hours.
Embodiment 3
Being averaged particle diameter is that 20nm, slurry concentration are the rutile titanium dioxide of 1wt%, is coated on 15W three U the inner surface of tube with spraying method, and film thickness is 150nm, dry in 100 degrees centigrade hotblast stove then, makes the 15W electricity-saving lamp; It is 1.22 μ w/cm that its ultraviolet ray sees through power
2, initial luminous flux is 950Lm, and lux maintenance was 82% in 4000 hours, and the life-span reaches 10000 hours.
Embodiment 4
Being averaged particle diameter is that 20nm, slurry concentration are the rutile titanium dioxide of 2wt%, is coated on 15W three U the inner surface of tube with spraying method, and film thickness is 200nm, dry in 125 degrees centigrade hotblast stove then, makes the 15W electricity-saving lamp; It is 1.12 μ w/cm that its ultraviolet ray sees through power
2, initial luminous flux is 960Lm, and lux maintenance was 83% in 4000 hours, and the life-span reaches 10000 hours.
Embodiment 5
Being averaged particle diameter is that 50nm, slurry concentration are the anatase titanium dioxide of 3wt%, is coated on 13W helical lampl internal surface with the suction coating method, and film thickness is 200nm, dry in 130 degrees centigrade hotblast stove then, makes the 13W electricity-saving lamp; It is 0.82 μ w/cm that its ultraviolet ray sees through power
2, initial luminous flux is 980Lm, and lux maintenance was 84% in 4000 hours, and the life-span reaches 10000 hours.
Embodiment 6
Being averaged particle diameter is that 50nm, slurry concentration are the rutile titanium dioxide of 5wt%, is coated on 23W helical lampl internal surface with the suction coating method, and film thickness is 250nm, dry in 130 degrees centigrade hotblast stove then, makes the 23W electricity-saving lamp; It is 0.45 μ w/cm that its ultraviolet ray sees through power
2, initial luminous flux is 1630Lm, and lux maintenance was 82% in 4000 hours, and the life-span reaches 10000 hours.
Embodiment 7
Being averaged particle diameter is that 50nm, slurry concentration are the rutile titanium dioxide of 8wt%, is coated on 13W helical lampl internal surface with the suction coating method, and film thickness is 500nm, dry in 130 degrees centigrade hotblast stove then, makes the 13W electricity-saving lamp; It is 0.2 μ w/cm that its ultraviolet ray sees through power
2, initial luminous flux is 930Lm, and lux maintenance was 84% in 4000 hours, and the life-span reaches 10000 hours.
Embodiment 8
Being averaged particle diameter is that 80nm, slurry concentration are the rutile titanium dioxide of 5wt%, is coated on 23W helical lampl internal surface with the suction coating method, and film thickness is 400nm, dry in 120 degrees centigrade hotblast stove then, makes the 23W electricity-saving lamp; It is 0.52 μ w/cm that its ultraviolet ray sees through power
2, initial luminous flux is 1600Lm, and lux maintenance was 84% in 4000 hours, and the life-span reaches 10000 hours.
Embodiment 9
Being averaged particle diameter is that 80nm, slurry concentration are the rutile titanium dioxide of 10wt%, is coated on 23W three U the inner surface of tube with the suction coating method, and film thickness is 1000nm, dry in 120 degrees centigrade hotblast stove then, makes the 23W electricity-saving lamp; It is 0.44 μ w/cm that its ultraviolet ray sees through power
2, initial luminous flux is 1420Lm, and lux maintenance was 85% in 4000 hours, and the life-span reaches 10000 hours.
Embodiment 10
Being averaged particle diameter is that 100nm, slurry concentration are the rutile titanium dioxide of 12wt%, is coated on 23W three U the inner surface of tube with the suction coating method, and film thickness is 1500nm, dry in 140 degrees centigrade hotblast stove then, makes the 23W electricity-saving lamp; It is 0.31 μ w/cm that its ultraviolet ray sees through power
2, initial luminous flux is 1380Lm, and lux maintenance was 85% in 4000 hours, and the life-span reaches 10000 hours.
Comparative Examples 1
Being averaged particle diameter is that 300nm, slurry concentration are 5% aluminum oxide liquid, is coated in the 23W three U fluorescent tubes, and described alumina protective layer thickness is 2000nm, carries out dusting, roasted tube more according to a conventional method, seals, exhaust, ageing, makes the 23W electricity-saving lamp; The fluorescent tube of making carries out burning-point according to the Energy Star standard, measures the optical throughput of 100h and 4000h respectively and carries out the long lifetime burning-point, obtains the lux maintenance of 4000h divided by the 100h optical throughput with the 4000h optical throughput; Life-span is mean lifetime, 10 lamps of burning-point, and the 6th time that lamp extinguishes is the life-span of this batch lamp; It is 2.22 μ w/cm that its ultraviolet ray sees through power
2, initial luminous flux is 1430Lm, and lux maintenance was 83% in 4000 hours, and the life-span reaches 10000 hours.
Comparative Examples 2
Exposed conduit is coating protective film not, directly carries out dusting, roasted tube according to a conventional method, seals, exhaust, ageing, makes the 23W electricity-saving lamp; It is 2.31 μ w/cm that its ultraviolet ray sees through power
2, initial luminous flux is 1450Lm, and lux maintenance was 70% in 4000 hours, and the life-span reaches 6000 hours.
Table 1
| Sequence number | Titanium dioxide concentration (%) | Alumina concentration (%) | 253.7nm outside line sees through power (μ w/cm 2) | 4000h lux maintenance (%) | Life-span (h) |
| Embodiment 1 | 0.3 | 0 | 1.87 | ≥79 | ≥8000 |
| Embodiment 2 | 0.5 | 0 | 1.31 | ≥81 | ≥10000 |
| Embodiment 3 | 1 | 0 | 1.22 | ≥82 | ≥10000 |
| Embodiment 4 | 2 | 0 | 1.12 | ≥83 | ≥10000 |
| Embodiment 5 | 3 | 0 | 0.82 | ≥84 | ≥10000 |
| Embodiment 6 | 5 | 0 | 0.45 | ≥82 | ≥10000 |
| Embodiment 7 | 8 | 0 | 0.20 | ≥84 | ≥10000 |
| Embodiment 8 | 5 | 0 | 0.52 | ≥84 | ≥10000 |
| Embodiment 9 | 10 | 0 | 0.44 | ≥85 | ≥10000 |
| Embodiment 10 | 12 | 0 | 0.31 | ≥85 | ≥10000 |
| Comparative Examples 1 | 0 | 5 | 2.22 | ≥83 | ≥10000 |
| Comparative Examples 2 | 0 | 0 | 2.31 | ≥70 | ≥6000 |
Rutile-type in the foregoing description and anatase titanium dioxide protective membrane are produced by East China University of Science.
The fluorescent tube that table 1 is depicted as coating titanium dioxide protective membrane of the present invention with do not apply protective membrane or by the performance synopsis of the fluorescent tube of traditional way coating alumina protective layer.In the table 1, every group of sample number of statistical test is 50.Can find out that from table 1 the fluorescent tube ultraviolet ray that applies titanium dioxide protective membrane of the present invention is low through power, lux maintenance and work-ing life and coating traditional protection film maintain an equal level, than the lux maintenance height, the long service life that do not apply protective membrane.
What should be understood that is: the foregoing description is just to explanation of the present invention, rather than limitation of the present invention, and any innovation and creation that do not exceed in the connotation scope of the present invention all fall within protection scope of the present invention.
Claims (8)
1. the protective membrane powder slurry used of shielding of ultraviolet is characterized in that being made into the slurry that weight ratio is 0.3-12Wt% with titanium dioxide powder and water.
2. protective membrane powder slurry according to claim 1 is characterized in that described water is deionized water.
3. protective membrane powder slurry according to claim 1 is characterized in that described titanium dioxide is rutile-type or Detitanium-ore-type.
4. protective membrane powder slurry according to claim 1 is characterized in that described titanium dioxide coarseness is 10-100nm.
5. protective membrane powder slurry according to claim 1 is characterized in that described weight ratio concentration is 0.5-10Wt%.
6. adopt the coating method of protective membrane powder slurry as claimed in claim 1 at the exposed conduit inwall; it is characterized in that; be made into the powder slurry that weight ratio is 0.3-12Wt% with titanium dioxide powder and water; described powder slurry is coated on the exposed conduit internal surface with the method that spraying or suction are coated with; thickness is 50-1500nm, and is dry in 80-140 degree centigrade hotblast stove then.
7. coating method according to claim 6 is characterized in that described coat-thickness is 100-1000nm.
8. coating method according to claim 6 is characterized in that described hot-blast furnace temperature is 95-130 degree centigrade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100524445A CN100462408C (en) | 2006-07-13 | 2006-07-13 | Ultraviolet ray blocking protecting film powder slurry and its coating method to inner wall of pipe |
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|---|---|---|---|
| CNB2006100524445A CN100462408C (en) | 2006-07-13 | 2006-07-13 | Ultraviolet ray blocking protecting film powder slurry and its coating method to inner wall of pipe |
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| Publication Number | Publication Date |
|---|---|
| CN1887975A CN1887975A (en) | 2007-01-03 |
| CN100462408C true CN100462408C (en) | 2009-02-18 |
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| CNB2006100524445A Expired - Fee Related CN100462408C (en) | 2006-07-13 | 2006-07-13 | Ultraviolet ray blocking protecting film powder slurry and its coating method to inner wall of pipe |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03131520A (en) * | 1989-10-13 | 1991-06-05 | Kanebo Ltd | Complex treated powder and production thereof |
| CN1385483A (en) * | 2002-06-20 | 2002-12-18 | 刘尚文 | Nano modified paint used for inner and outer wall |
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2006
- 2006-07-13 CN CNB2006100524445A patent/CN100462408C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03131520A (en) * | 1989-10-13 | 1991-06-05 | Kanebo Ltd | Complex treated powder and production thereof |
| CN1385483A (en) * | 2002-06-20 | 2002-12-18 | 刘尚文 | Nano modified paint used for inner and outer wall |
Non-Patent Citations (2)
| Title |
|---|
| 纳米二氧化钛在防晒化妆品中的应用. 徐存英，段云彪.云南化工，第31卷第3期. 2004 |
| 纳米二氧化钛在防晒化妆品中的应用. 徐存英，段云彪.云南化工，第31卷第3期. 2004 * |
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| CN1887975A (en) | 2007-01-03 |
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