Light storage type multiphase ceramic material with ultra-high brightness, and preparation method thereof.

A composite ceramic and light-storage technology, which is applied in the direction of luminescent materials, ceramic products, chemical instruments and methods, etc., can solve the problems of unfavorable formation of round pores, easy refraction, large difference in firing temperature, etc., and achieve short experiment period , process controllable, and the effect of improving efficiency

Active Publication Date: 2019-09-06
XUZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The decomposition temperature of this type of pore-forming agent is far from the firing temperature of ceramics, which is not conducive to the formation of round pores. Fluorescence is prone to refraction after entering the pores, so that the fluorescence propagates inside the ceramic in the form of scattering or reflection.

Method used

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  • Light storage type multiphase ceramic material with ultra-high brightness, and preparation method thereof.
  • Light storage type multiphase ceramic material with ultra-high brightness, and preparation method thereof.
  • Light storage type multiphase ceramic material with ultra-high brightness, and preparation method thereof.

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Weighing: According to 1 in Table 1 # As shown, the quartz and SrCO with different particle sizes were weighed 3 、Al 2 o 3 、Eu 2 o 3 、Dy 2 o 3 Raw material powder and pore-forming agent;

[0036] (2) Mixing: the powder obtained in step (1) is placed in a ball mill tank equipped with 150g of high-purity alumina balls, and 12g of deionized water is added at the same time for ball milling and mixing. The ball milling speed is 160r / min. The time is 20h;

[0037] (3) Molding: the slurry obtained in step (2) is subjected to vacuum defoaming treatment, and defoamed for 30 minutes under a vacuum environment of -15kpa; then the defoamed slurry is injected into a gypsum mold to form a green body;

[0038] (4) Drying: after the green body obtained in step (3) was allowed to stand for 7 hours, demoulding was performed, and after demoulding, it was placed in a drying oven to dry for 20 hours at a drying temperature of 60°C;

[0039] (5) Sintering: The green body dried i...

Embodiment 2

[0046] (1) Weighing: according to Table 1 in 2 # As shown, the quartz and SrCO with different particle sizes were weighed 3 、Al 2 o 3 、Eu 2 o 3 、Dy 2 o 3 Raw material powder and pore-forming agent;

[0047] (2) Mixing: the powder obtained in step (1) is placed in a ball mill tank equipped with 200g of high-purity alumina balls, and 15g of deionized water is added at the same time for ball milling and mixing. The ball milling speed is 180r / min. The time is 22h;

[0048] (3) Forming: the slurry obtained in step (2) is subjected to vacuum defoaming treatment, and the defoaming is carried out for 40 minutes under a vacuum environment of -10kpa; then the defoamed slurry is injected into a gypsum mold, and molded to obtain a green body;

[0049] (4) Drying: after the green body obtained in step (3) was allowed to stand for 9 hours, demoulding was performed, and after demoulding, it was placed in a drying oven to dry for 22 hours at a drying temperature of 70°C;

[0050] (5)...

Embodiment 3

[0053] (1) Weighing: According to 3 in Table 1 # As shown, the quartz and SrCO with different particle sizes were weighed 3 、Al 2 o 3 、Eu 2 o 3 、Dy 2 o 3 Raw material powder and pore-forming agent;

[0054] (2) Mixing: the powder obtained in step (2) is placed in a ball mill tank equipped with 300g of high-purity alumina balls, and 17g of deionized water is added at the same time for ball milling and mixing. The ball milling speed is 300r / min. The time is 25h;

[0055] (3) Forming: the slurry obtained in step (2) is subjected to vacuum defoaming treatment, and the defoaming is carried out for 50 minutes under a vacuum environment of -30kpa; then the defoamed slurry is injected into a gypsum mold, and molded to obtain a green body;

[0056] (4) Drying: after the green body obtained in step (3) was left to stand for 12 hours, demoulding was performed, and after demoulding, it was placed in a drying oven to dry for 24 hours at a drying temperature of 100°C;

[0057] (5) ...

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Abstract

The invention discloses a light storage type multiphase ceramic material with ultra-high brightness, and a preparation method thereof. According to the method, long afterglow fluorescent powder, quartz ceramic powder and a pore forming agent are homogenized to form a slurry, and casting molding, drying, and sintering are performed to prepare the multiphase structure comprising gas pores and a light storage ceramic, wherein the ceramic material has micro gas pores inside, the gas pores have characteristics of high sphericity and diameter of 100-1000 nm, the conditions for Mie scattering of fluorescence inside the ceramic are met, the propagation path of the fluorescence is changed, and the total reflection effect is weakened. According to the present invention, the fore-lying light extraction efficiency of the light storage type multiphase ceramic material is significantly improved by 10-30% compared with the existing multiphase light storage ceramic material; and the preparation process is simple and rapid, the sintering temperature is low, and the method is suitable for mass production.

Description

technical field [0001] The invention belongs to the field of preparation of inorganic non-metallic materials, and relates to a light-storage ceramic material, in particular to a light-storage type composite ceramic material with ultra-high brightness and a preparation method thereof. Background technique [0002] Strontium aluminate long-lasting phosphor doped with europium and dysprosium is a chemically stable yellow-green long-lasting luminescent material, which can be widely used in architectural indication and emergency lighting, disaster relief and fire escape, gardening and landscape art design and other fields. [0003] At present, the long-lasting light-emitting indicator products in practical application are coated on clay or polyvinyl chloride plastic (PVC) substrates by the method of spin-coating the sintered long-lasting phosphor powder twice. This preparation method is cumbersome and requires two-step sintering (phosphor powder sintering + substrate sintering) a...

Claims

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Application Information

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IPC IPC(8): C04B35/14C04B35/622C04B38/06C09K11/77
CPCC04B35/14C04B35/622C04B38/0645C04B2235/3201C04B2235/3213C04B2235/3217C04B2235/3224C04B2235/5427C04B2235/5436C04B2235/6022C04B2235/606C04B2235/656C04B2235/6562C04B2235/6567C04B2235/9646C09K11/7783C04B38/02
Inventor 张乐孙炳恒王蕊李亮亮杨顺顺黄国灿康健邵岑周天元陈浩
Owner XUZHOU NORMAL UNIVERSITY
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