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Silicate green long afterglow material and preparation method thereof

A long afterglow material and silicate technology, which is applied in the direction of luminescent materials, chemical instruments and methods, sustainable manufacturing/processing, etc., can solve the problem of long afterglow materials with insufficient luminous color, poor water resistance and stability, and afterglow brightness Not strong and other problems, to achieve significant energy saving effect, good thermal stability, and good synthesis stability

Inactive Publication Date: 2012-08-01
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, it is known from the published literature that the types in this field are still not rich, especially the long-lasting silicate materials have insufficient luminous colors, weak afterglow brightness, poor water resistance and stability, etc. defect

Method used

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  • Silicate green long afterglow material and preparation method thereof
  • Silicate green long afterglow material and preparation method thereof
  • Silicate green long afterglow material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] SrZ 1.999 Si 2 o 7 :Mn 0.001 , B 0.04 Long afterglow luminescent material and raw material ratio figure 1 shown.

[0044] Grind the above ratio thoroughly in an agate mortar, put it into a corundum crucible, compact it, put it into a carbon canister, put it into a high-temperature furnace, heat it to 1300°C, keep the temperature constant for 3 hours, and cool it down to room temperature with the furnace. Near white solid.

[0045] After the material of this embodiment was irradiated with ultraviolet rays for 10 minutes, it showed green afterglow luminescence in the dark; 2 ) above can also emit light for more than 3 hours.

Embodiment 2

[0047] CaZ 1.995 Si 2 o 7 :Mn 0.005 , B 0.1 Long afterglow luminescent material and raw material ratio figure 2 shown.

[0048] Grind the above ratio thoroughly in an agate mortar, put it into a corundum crucible, compact it, put it into a carbon canister, put it into a high-temperature furnace, heat it to 1200°C, keep the temperature constant for 4 hours, and cool it down to room temperature with the furnace. Near white solid.

[0049] After the material of this embodiment was irradiated with ultraviolet rays for 10 minutes, it showed green afterglow luminescence in the dark; 2 ) above can also emit light for more than 6 hours.

Embodiment 3

[0051] SrZ 1.96 Si2O 7 :Mn 0.04 , B 0.6 Long afterglow luminescent material and raw material ratio image 3 shown.

[0052] Grind the above ratio thoroughly in an agate mortar, put it into a corundum crucible, compact it, put it into a high-temperature furnace, heat it to 1000°C, keep the temperature constant for 2 hours, and cool it to room temperature with the furnace to obtain a near-white solid.

[0053] After the material of this embodiment was irradiated with ultraviolet rays for 10 minutes, it showed green afterglow luminescence in the dark; 2 ) above can also emit light for more than 7 hours.

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Abstract

The invention relates to a silicate green long afterglow material. The structural formula of a compound of the silicate green long fluorescent lag material is M1-yZn2-xSi2O7:xMn,yRe,zH3BO3, wherein the ratio of (M)O to ZnO to SiO2 is 1:2:2; x, y and z refer to molar coefficient ratio; Mn is an activator; Re is a coactivator; and H3BO3 is an auxiliary solvent. The invention adopts a technical proposal: adopting silicate as a substrate, single Mn<2+> ions as the activator, and doped ion Re as the coactivator, and fully mixing the raw materials with the auxiliary solvent in proportion; and igniting the mixture for 2 to 4 hours in a high-temperature furnace at the temperature of between 1,000 and 1,300 DEG C in a reducing atmosphere or in the air, cooling the obtained product along the furnace temperature, and taking out the obtained product. The silicate green long afterglow material overcomes the defect of a few varieties of the prior long afterglow material and particularly overcomes the defects of a few luminous colors, weak after glow brightness, poor water resistance and stability, and the like, and is suitable for passive display and energy-saving illumination in the fields of traffic, building, chemical industry, mine, household electrical appliance and the like.

Description

technical field [0001] The invention relates to a silicate green long afterglow material and a manufacturing method thereof. Background technique [0002] Long afterglow material is a new energy-saving material. People take advantage of its light-storage-light-emitting characteristics to widely apply it to various aspects of production and people's life. At present, long afterglow luminescent materials are mainly used in the fields of low-level emergency lighting, indicator marks, decoration and beautification, as well as in the fields of architectural decoration, transportation, and military science. Specific products include: luminescent coatings, luminescent films, luminescent fire safety signs, luminescent inks, luminescent ceramics, luminescent plastics, luminescent fibers, luminescent paper, luminescent glass, etc. [0003] Long-lasting luminescent material is essentially a special kind of thermoluminescent material, that is, thermoluminescent material at room temper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/59
CPCY02P20/10
Inventor 丁建文袁文辉肖思国
Owner XIANGTAN UNIV
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