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Aluminate-based long-afterglow glowing material

A long afterglow luminescence, aluminate technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of easy precipitation, high synthesis temperature, coarse grains, etc., and achieve a round powder surface, excellent luminescence performance, and crystallinity. high effect

Inactive Publication Date: 2013-07-31
连云港市丽港稀土实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical problems of this method are: high synthesis temperature and high energy consumption; it is difficult to mix the raw materials uniformly, the crushing and grinding process destroys the crystal form and introduces impurities, which deteriorates the luminescent performance; the product has high hardness and coarse grains; the production cycle is long ( About 3 to 5 days), etc., the paint and ink system prepared with it are unstable and easy to precipitate

Method used

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  • Aluminate-based long-afterglow glowing material
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  • Aluminate-based long-afterglow glowing material

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Example 1, an aluminate-based long-lasting luminescent material, its chemical characteristic expression is:

[0019]

[0020] In the formula:

[0021] M is one or more of Sr, Ca, Ba, Mg; RE can be one of Dy, Nd; Ln can be one or more of La, Dy, Nd, Pr; Moore, Moore, Moore, Moore.

Embodiment 2

[0022] Example 2, the first preparation experiment of an aluminate-based long-lasting luminescent material described in Example 1.

[0023] Eu with purity ≥99.99% 2 o 3 and Dy 2 o 3 Weigh 0.704g and 1.191g respectively, and use 28g of 68% HNO 3 After heating (60°C) to dissolve, 21.164g of Sr(NO 3 ) 2 and 75.026g of Al(NO 3 ) 3 ?9H 2 O was added to the solution while adding 15% H 3 BO 3 Cosolvent, then add urea according to the molar ratio of combustion agent / nitrate of 3:1, then add 500ml deionized water, use ultrasonic wave + strong stirring at 80°C to make the solution clear; put the solution into a drying oven at 120°C Concentrate in medium, then quickly move into a high-temperature electric furnace heated to 500 ° C, keep warm in an air atmosphere for combustion synthesis reaction (time is about 10 minutes), cool to room temperature to obtain a foamy product with a loose structure; grind the foamy product to obtain Ultrafine powder, then put into the calciner, c...

Embodiment 3

[0024] Example 3, the second preparation experiment of an aluminate-based long-lasting luminescent material described in Example 1.

[0025] Eu with purity ≥99.99% 2 o 3 、Nd 2 o 3 , La 2 o 3 and Dy 2 o 3 Weigh 0.704g, 0.336g, 0.326g and 0.373g respectively, and use 35g of 68% HNO 3 After heating (75°C) to dissolve, 23.615g of Ca(NO 3 ) 2 ?4H 2 O and 75.026g of Al(NO 3 ) 3 ?9H 2 O was added to the solution while adding 10% H 3 BO 3 Co-solvent, then add urea according to the molar ratio of combustion agent / nitrate of 5:1, then add 500ml deionized water, use ultrasonic wave + strong stirring at 70°C to make the solution clear; put the solution into a drying oven at 120°C Concentrate in medium, then quickly move into a high-temperature electric furnace heated to 600 ° C, keep warm in an air atmosphere for combustion synthesis reaction (time is about 10 minutes), cool to room temperature to obtain a foamy product with a loose structure; grind the foamy product to obt...

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Abstract

The invention relates to an aluminate-based long-afterglow glowing material, which is characterized in that the chemical characteristic expression formula is shown as follow: wherein, the M is one or more of Sr, Ca, Ba and Mg, the RE can be one of Dy and Nd, the Ln can be one or more of La, Dy, Nd and Pr, mole, mole, mole and mole. The aluminate long-afterglow glowing material is loose in structure, low in hardness and granularity, high in crystallizing degree, complete in crystal form and excellent in glowing performance, powder thereof is low in hardness, fine in granularity, high in crystallizing degree, complete in crystal form and excellent in glowing performance, and the surface of the powder is round and high in sphericity. The aluminate-based long-afterglow glowing material can bewell applied to the fields of printing, glowing decoration, artware and various noctilucent marks and the like.

Description

technical field [0001] The invention relates to a long afterglow luminescent material, in particular to an aluminate long afterglow luminescent material, which belongs to the technical field of luminescent materials. Background technique [0002] The current industrial production method of aluminate long-lasting luminescent materials is generally a high-temperature solid-phase method. The technical problems of this method are: high synthesis temperature and high energy consumption; it is difficult to mix the raw materials evenly; the crushing and grinding process destroys the crystal form and introduces impurities, which deteriorates the luminescence performance; the product has high hardness and coarse grains; the production cycle is long ( About 3 to 5 days), etc., the paint and ink system prepared with it are unstable and easy to precipitate. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencies...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/64
Inventor 冯立超金佳佳
Owner 连云港市丽港稀土实业有限公司