High-color-rendering composite fluorescent glass and preparation method thereof

A composite fluorescence, high color rendering technology, applied in the field of fluorescent materials, can solve the problems of inability to achieve rapid cooling molding, unfavorable large-scale production, aggravation, etc., achieve excellent thermal stability and chemical stability, and meet the needs of large-scale industrial production. Effect

Active Publication Date: 2022-04-05
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composite fluorescent glass material has excellent luminous efficiency and color rendering index, but the composite fluorescent glass material is limited to B 2 o 3 -SiO 2 -CaO-Na 2 O matrix glass system, resulting in the mixed melt of phosphor powder and matrix glass cannot be quenched and formed, which is not conducive to large-scale production
In addition, during the melting process, the strong interfacial reaction with the matrix glass will corrode the phosphor particles

Method used

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  • High-color-rendering composite fluorescent glass and preparation method thereof
  • High-color-rendering composite fluorescent glass and preparation method thereof
  • High-color-rendering composite fluorescent glass and preparation method thereof

Examples

Experimental program
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Effect test

Example Embodiment

[0032] Example 1

[0033] According to the collagen formulation of the bungeicate, a certain amount of raw material is weighed, and the mixed uniform is placed in a crucible, fuse 0.5 h at 850 ° C, and the melted glass fluid is quenched, dried, grind and over 200 mesh sieve. Matrix glass powder. Weigh Luag: CE according to 8% quality score 3+ Green phosphor and matrix glass powder, after mixing, put the crucible, fuse 0.3h at 580 ° C, pour the melt into the copper mold of 250 ° C, and the bottom of the mold is pre-paved with a layer of CAALSIN 3 : EU 2+ Red phosphor. After the melt in the crucible flows completely into the mold, quickly cover the mold. Continue to heat insulation 0.5h, after it is naturally cooled to room temperature, removed from the mold, annealing at 320 ° C for 3 h, cooled to room temperature to obtain a composite fluorescent glass material.

[0034] Structure of the mold, such as figure 2 As shown, including the cover plate 1 and the bottom tank 2, wherein th...

Example Embodiment

[0041] Example 2

[0042]According to the phosphate glass formulation, a certain amount of raw material is weighed, and the mix is ​​uniformly placed in a crucible, fused at 1 h at 1000 ° C, and the melted glass fluid is quenched, dried, ground and over 200 mesh sieve after obtaining a matrix glass. pink. Weigh YAG: CE according to 20% quality fraction 3+ The yellow phosphor and matrix glass powder were mixed. After mixing, it was placed in a crucible at 650 ° C, and the melt was poured into a copper mold that was heated to 250 ° C, and the bottom of the mold was pre-paved with a layer of CAALSRN 3 : EU 2+ Red phosphor. After the melt in the crucible flows completely into the mold, quickly cover the mold. Continue to heat insulation 0.5h, after it is naturally cooled to room temperature, removed from the mold, annealing at 320 ° C for 3 h, cooled to room temperature to obtain a composite fluorescent glass material.

Example Embodiment

[0043] Example 3

[0044] According to the borate glass formulation, a certain amount of raw material is weighed, and the mix is ​​uniform, and the crucible is placed in 1 h at 1100 ° C, and the molten glass solution is subjected to water, and the substrate is obtained after drying, grinding and over 200 mesh sieve. Glass powder. Weigh YAGG: CE according to 15% quality fraction 3+ The green phosphor and matrix glass powder are mixed. After mixing, it is placed in a crucible, fused at 700 ° C for 1 h, and pour the melt into the copper mold that is heated to 200 ° C, and the bottom of the mold is pre-paved with K 2 SIF 6 : Mn 4+ Red phosphor. After the melt in the crucible flows completely into the mold, quickly cover the mold. Continue to heat insulation 0.5h, after it is naturally cooled to room temperature, removed from the mold, annealing at 320 ° C for 3 h, cooled to room temperature to obtain a composite fluorescent glass material.

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Abstract

The invention discloses high-color-rendering composite fluorescent glass and a preparation method thereof. The high-color-rendering composite fluorescent glass comprises a PiG layer and a red fluorescent powder layer. The preparation method of the high-color-rendering composite fluorescent glass comprises the following steps: weighing a certain amount of raw materials according to a low-melting-point glass formula, uniformly mixing, putting into a crucible, melting for 0.1-4 hours, carrying out water quenching on the molten glass liquid, drying, grinding and sieving to obtain matrix glass powder; the preparation method comprises the following steps: mixing matrix glass powder and commercial green or yellow fluorescent powder according to a required mass ratio, putting the mixture into a crucible, melting for 0.1-4 hours, pouring a melt into a mold which is heated to a certain temperature, paving a layer of red fluorescent powder in the mold in advance, quickly covering the mold after the melt in the crucible completely flows into the mold, continuously keeping the temperature for 0.1-1 hour, and cooling to room temperature, thereby obtaining the red fluorescent powder. And naturally cooling to room temperature, and carrying out annealing treatment to obtain the composite fluorescent glass material. The preparation method provided by the invention is suitable for compounding matrix glass of different systems and various fluorescent powders, and is wide in application field and easy for large-scale production.

Description

technical field [0001] The invention is applied to the field of fluorescent materials, in particular to a high color rendering composite fluorescent glass and a preparation method thereof. Background technique [0002] In recent years, LED lighting technology has gradually replaced traditional light sources such as incandescent lamps as the fourth-generation solid-state lighting source due to its high efficiency, energy saving, long service life, and low production cost. Among them, commercial white LEDs mostly use a combination of blue LEDs and yellow phosphors / silica gel . However, there is an increasing demand for high-brightness, long-range light sources such as high-power white LEDs and laser lighting in the fields of outdoor lighting, vehicle lighting, mining engineering, etc., which makes it difficult for organic polymers such as silicone or epoxy resin to effectively transmit high power The huge heat generated by the components causes yellowing, carbonization, and t...

Claims

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Application Information

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IPC IPC(8): C03C14/00C03C4/12C03B19/02
CPCY02P40/57
Inventor 张保平丁文停
Owner XIAMEN UNIV
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