CN1557908A - Method for preparing long aftergrow nano luminous material at low temperature - Google Patents
Method for preparing long aftergrow nano luminous material at low temperature Download PDFInfo
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- CN1557908A CN1557908A CNA2004100234354A CN200410023435A CN1557908A CN 1557908 A CN1557908 A CN 1557908A CN A2004100234354 A CNA2004100234354 A CN A2004100234354A CN 200410023435 A CN200410023435 A CN 200410023435A CN 1557908 A CN1557908 A CN 1557908A
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Abstract
The present invention belongs to the field of chemical material technology, and is mainly the preparation process of long afterglow nano light emitting material with strontium nitrate, aluminum nitrate, europium nitrate and dysprosium nitrate as main material, urea, boric acid and other reagent, and through dissolving in deionized water, heating, sintering and other steps. Compared with available technology, the present invention has the advantages of simple technological process, low power consumption, high brightness, long afterglow, etc.
Description
(1) technical field
The present invention relates to the method that a kind of low temperature prepares long-persistence nano-luminescent materials, belong to chemical material technical field.
(2) background technology
Long after glow luminous material belongs to a kind of of embedded photoluminescent material, can be by any luminous energy, as: daylight, light equal excitation.Since after removing light source long after glow luminous material can be in the dark can the long period luminous, so people generically are called " luminescent powder ".Novel long after glow luminous material is that the nineties in 20th century is found, and it is different from traditional sulfide type and radioactive rays excitated type noctilucent material fully, does not contain any harmful element, stable performance, and time of persistence is long.This material is a matrix with the aluminate material, with the rare earth material is to form luminescence center, has good Presentation Function at night.Utilize this characteristics of luminescence of long after glow luminous material, its range of application can contain many aspects of industrial and agricultural production and people's life.This class material can further be made luminous paint, light-emitting film, luminous fire protection safety sign, luminous printing ink, luminescent ceramic, luminescent plastics, luminescent fibre, luminescent paper etc., is used widely in fields such as building decoration, communications and transportation, military installations, fire-fighting emergent, daily necessities.
At present, long after glow luminous material product both domestic and external all is by Eu
2O
3, Dy
2O
3, SrO and Al
2O
3Micro mist high temperature (about 1300 ℃) solid state reaction sintering and obtaining in reducing atmosphere.The shortcoming of this method is that solid state reaction can not make active ions uniform distribution in matrix, thereby causes quenching of fluorescence, has reduced the luminous intensity of luminescent material.And needing in reaction process provides the reducing atmosphere condition with hydrogen or powdered carbon, technological process more complicated and danger.And the test block behind the sintering is hard, needs to pulverize novel process, then can further reduce its luminous intensity.For this reason, people prepare the method for long-persistence nano-luminescent materials under cold condition in research.
(3) summary of the invention
Problems such as complex technical process, product luminous intensity that prior art exists are low in order to solve, production temperature height the present invention proposes a kind of preparation technology without reductive agent, prepare the method for the good long-persistence nano-luminescent materials of illumination effect at low temperatures.
The present invention is realized by following technical scheme:
It is as follows that low temperature prepares the method steps of long-persistence nano-luminescent materials:
(1) 100: 200: 0.5 in molar ratio～2: 0.5～2 are dissolved in strontium nitrate, aluminum nitrate, europium nitrate, Dysprosium trinitrate in the deionized water;
(2) add the urea of 2～4 times in relative nitrate and 5%～9% boric acid then in above-mentioned solution, the dissolving back was 100 ℃～180 ℃ heating 1～30 minute;
(3) then with above-mentioned solution 400 ℃～800 ℃ following sintering 5～30 minutes, can obtain long-persistence nano-luminescent materials.
Technology of the present invention is simple, safety, production temperature are low.The luminescent material brightness of adopting the inventive method to obtain is higher, and the product granularity is little, belongs to nano level, and time of persistence is long, can reach more than 10 hours, and material is heat-resisting, withstand voltage, and chemical stability is good.In addition, the luminescent material that utilizes the present invention to obtain, nontoxic, radiationless, belong to the environmental type luminescent material.
Advantages such as in a word, it is simple that the present invention has technology, and the luminescent material brightness height that makes, time of persistence are long.
(4) embodiment
Embodiment 1
It is soluble in water to take by weighing 100 gram strontium nitrates, 355 gram aluminum nitrates, 0.8 gram europium nitrate, 0.8 gram Dysprosium trinitrate, 150 gram urea and 4.4 gram boric acid in molar ratio respectively, heated 1 minute down at 100 ℃, 400 ℃ of following sintering 5 minutes, can obtain long-persistence nano-luminescent materials then.
Embodiment 2
It is soluble in water to take by weighing 100 gram strontium nitrates, 355 gram aluminum nitrates, 1.5 gram europium nitrates, 1.5 gram Dysprosium trinitrates, 180 gram urea and 5 gram boric acid in molar ratio respectively, heated 10 minutes down at 150 ℃, 550 ℃ of following sintering 10 minutes, can obtain long-persistence nano-luminescent materials then.
Embodiment 3
It is soluble in water to take by weighing 100 gram strontium nitrates, 355 gram aluminum nitrates, 2 gram europium nitrates, 2 gram Dysprosium trinitrates, 200 gram urea and 7.8 gram boric acid in molar ratio respectively, heated 30 minutes down at 180 ℃, 800 ℃ of following sintering 30 minutes, can obtain long-persistence nano-luminescent materials then.
Claims (1)
1. a low temperature prepares the method for long-persistence nano-luminescent materials, it is characterized in that preparation process is as follows:
(1) 100: 200: 0.5 in molar ratio～2: 0.5～2 are dissolved in strontium nitrate, aluminum nitrate, europium nitrate, Dysprosium trinitrate in the deionized water; Then
(2) add the urea of 2～4 times in relative nitrate and 5%～9% boric acid in above-mentioned solution, the dissolving back was 100 ℃～180 ℃ heating 1～30 minute; Then
(3) with above-mentioned solution 400 ℃～800 ℃ following sintering 5～30 minutes, can obtain long-persistence nano-luminescent materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100234354A CN1314776C (en) | 2004-01-15 | 2004-01-15 | Method for preparing long aftergrow nano luminous material at low temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100234354A CN1314776C (en) | 2004-01-15 | 2004-01-15 | Method for preparing long aftergrow nano luminous material at low temperature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1557908A true CN1557908A (en) | 2004-12-29 |
| CN1314776C CN1314776C (en) | 2007-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100234354A Expired - Fee Related CN1314776C (en) | 2004-01-15 | 2004-01-15 | Method for preparing long aftergrow nano luminous material at low temperature |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100457852C (en) * | 2005-06-16 | 2009-02-04 | 中国科学院合肥物质科学研究院 | Nanotube, nano bar-shape aluminate long afterglow materials and method for preparing same |
| CN101691718B (en) * | 2009-09-28 | 2011-02-16 | 广东轻工职业技术学院 | Method for preparing long afterglow luminous paper |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1038517C (en) * | 1993-04-05 | 1998-05-27 | 肖石 | Multi-purpose detergent and polishing agent and method for prepn. of same |
| JP4409093B2 (en) * | 1998-08-25 | 2010-02-03 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Method for coating a luminescent material |
| CN1102170C (en) * | 1999-10-29 | 2003-02-26 | 重庆大学 | Combustion process for preparing long-afterglow phosphorescent powder |
| CN1335349A (en) * | 2000-07-21 | 2002-02-13 | 中国科学技术大学 | Rare earth subsulfate luminous material and its hot synthesis in solvent |
| CN1200046C (en) * | 2003-01-28 | 2005-05-04 | 南京师范大学 | Luminous nano composite material and its preparing method |
| CN1206314C (en) * | 2003-04-11 | 2005-06-15 | 唐敏 | Acumulating self-luminescence material with long afterglow and its preparing method |
-
2004
- 2004-01-15 CN CNB2004100234354A patent/CN1314776C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100457852C (en) * | 2005-06-16 | 2009-02-04 | 中国科学院合肥物质科学研究院 | Nanotube, nano bar-shape aluminate long afterglow materials and method for preparing same |
| CN101691718B (en) * | 2009-09-28 | 2011-02-16 | 广东轻工职业技术学院 | Method for preparing long afterglow luminous paper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1314776C (en) | 2007-05-09 |
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