Preparation method of long-afterglow luminescent material zine phosphate

A long afterglow luminescence, zinc phosphate technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of easy decomposition, increase production costs, etc., and achieve the effects of no radioactivity, easy grinding, and simple preparation method.

Inactive Publication Date: 2003-09-24
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, commercial red long afterglow materials still use alkaline eart...

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] According to the chemical formula (Zn 0.85 Zr 0.05 mn 0.10 ) 3 (PO 4 ) 2 Accurately weigh 2.55mol ZnO, 2mol(NH 4 ) 2 HPO 4 , 0.15mol ZrO 2 and 0.3mol MnO, and 0.01mol B 2 o 3 As a cosolvent, after fully mixing, pre-sinter in air at 200°C for 6 hours, after cooling to room temperature, take it out and grind it again fully and react in air at 900°C for 10 hours, the sample is analyzed by powder X-ray diffractometer The main phase is γ-(Zn) 3 (PO 4 ) 2 , after 30 minutes of ultraviolet irradiation, the sample emits a long red afterglow, and the afterglow time can last for about 1 hour.

Embodiment 2

[0011] According to the chemical formula (ZnSm 0.01 mn 0.04 ) 3 (PO 4 ) 2 , accurately weigh 3mol ZnO, 2molNH 4 h 2 PO 4 , 0.015mol Sm 2 o 3 and 0.12mol MnCl 2 , and 0.01mol H 3 BO 3 As a co-solvent, after fully mixing, pre-sinter in the air at 600°C for 2 hours, after cooling to room temperature, take it out and grind it again fully and react in the air at 1100°C for 4 hours, the sample is passed through a powder X-ray diffractometer The main phase of analysis is β-(Zn) 3 (PO 4 ) 2 After irradiating with ultraviolet rays for 30 minutes, the sample emits a long red afterglow, and the afterglow time can last for about 3 hours.

Embodiment 3

[0013] According to the chemical formula (Zn 0.934 Li 0.001 Si 0.06 mn 0.005 ) 3 (PO 4 ) 2 , accurately weighed 2.802molZnO, 2mol(NH 4 ) 2 HPO 4 , 0.0015mol Li 2 CO 3 , 0.18mol SiO 2 and 0.015molMnCO 3 , and 0.01mol H 3 BO 3 As a co-solvent, after fully mixing, pre-sinter at 400°C for 4 hours in a carbon-reducing atmosphere. Ray diffractometer analysis main phase is α-(Zn) 3 (PO 4 ) 2 , after 30 minutes of ultraviolet irradiation, the sample emits a yellow-green long afterglow, and the afterglow time can last for about 0.5 hours.

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PUM

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Abstract

The present invention relates to a long afterglow luminous material zinc phosphate. Its preparation method includes the following steps: mixing the carbonates, oxides, phosphates, nitrates, acetaets and sulfates of the above-mentioned elements in the representation formula as raw material to obtain their mixture, grinding said mixture and flux and uniformly mixing them; selecting air, nitrogen gas, carbon, carbon monoxide gas, hydrogen gas or nitrogen-hydrogen mixed gas, presintering at 200-600 deg.C for 2-6 hr., cooling to room temp., secondary grinding and uniformly mixing them, sintering at 500-1100 deg.C for 4-10 hr. so as to obtain said invented product.

Description

technical field [0001] The invention relates to a preparation method of zinc phosphate, a long afterglow luminescent material, more specifically, a composition and a preparation method of zinc phosphate, a yellow-green, orange-yellow, especially red long-afterglow luminescent material. Background technique [0002] Like other lighting and display industries, it is the ultimate goal of the long-lasting luminescent material industry to pursue blue, green and red long-lasting luminescent materials to achieve full-color luminous lighting. However, up to now, people have only researched and developed blue and green long afterglow materials with excellent afterglow properties, but there is a serious lack of excellent red long afterglow luminescent materials. Recently, in the patent US5,650,094, Royce et al. disclosed a rare earth-activated divalent titanate red long afterglow material (CaZnMg)TiO 3 : Pr, the afterglow only lasts for 10 minutes. At present, commercial red long af...

Claims

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Application Information

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IPC IPC(8): C09K11/81
Inventor 苏锵王静吕玉华李成宇
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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