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Silicate based energy storing and light reflecting type luminescent material

A technology of luminescent materials and silicate, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve problems such as luminous intensity and duration defects, and achieve the effects of improving luminous brightness, facilitating calcination, and mixing uniformly

Inactive Publication Date: 2018-04-20
CHONGQING JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, it is common to incorporate rare earth metals into Sr 2 MgSi 2 o 7 In the crystal lattice, replace the Sr element and occupy the position of Sr to improve the luminous intensity, and obtain a silicate-based material doped with rare earth metals, such as: Sr 1.97 MgSi 2 o 7 :Eu 2+ 0.01 Dy 3+ 0.02 , but such doped silicate-based luminescent materials still have defects in luminous intensity and duration

Method used

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  • Silicate based energy storing and light reflecting type luminescent material
  • Silicate based energy storing and light reflecting type luminescent material
  • Silicate based energy storing and light reflecting type luminescent material

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preparation example Construction

[0025] In the silicate-based energy-storage reflective luminescent material provided in this embodiment, the structural formula of the silicate-based energy-storage reflective luminescent material is: Sr 1.99 Mg 0.97 Si 2 o7 :Eu 0.01 Dy 0.03 ; The preparation method of the silicate-based energy-storage reflective light-emitting material comprises the following steps:

[0026] a. Take the raw material SrCO 3 , 4MgCO 3 ·Mg(OH) 2 ·5H 2 O, SiO 2 、Eu 2 o 3 、Dy 2 o 3 and H 3 BO 3 Stir and mix with an appropriate amount of water (just enough to immerse all the raw material components), then let it stand to make the solid mixture and water layer, remove the water layer and collect the uniformly mixed solid mixture, then put the collected solid mixture into a crucible, and let it stand air dry;

[0027] b. Place the solid mixture obtained in step a in a reducing atmosphere, raise the temperature to 1000°C at a heating rate of 16-20°C / min, sinter for 42-47min, and then in...

Embodiment 1

[0043] In the silicate-based energy-storage reflective luminescent material provided in this embodiment, the structural formula of the silicate-based energy-storage reflective luminescent material is: Sr 1.99 Mg 0.97 Si 2 o 7 :Eu 0.01 Dy 0.03 ; The preparation method of the silicate-based energy-storage reflective light-emitting material comprises the following steps:

[0044] a. The molar ratio is n(SrCO 3 ): n(4MgCO 3 ·Mg(OH) 2 ·5H 2 O): n(SiO 2 ): n(Eu 2 o 3 ): n(Dy 2 o 3 ): n(H 3 BO 3 )=1.99:0.194:2:0.005:0.015:0.1 Weigh raw material SrCO 3 , 4MgCO 3 ·Mg(OH) 2 ·5H 2 O, SiO 2 、Eu 2 o 3 、Dy 2 o 3 and H 3 BO 3 Stir and mix with an appropriate amount of deionized water (that can immerse all raw material components), the stirring time is 5h, and then stand for 2h to make the solid mixture and water layer, remove the water layer and collect the uniformly mixed solid mixture, and then the collected The solid mixture is put into a crucible, and allowed to...

Embodiment 2

[0047] In the silicate-based energy-storage reflective luminescent material provided in this embodiment, the structural formula of the silicate-based energy-storage reflective luminescent material is: Sr 1.99 Mg 0.97 Si 2 o 7 :Eu 0.01 Dy 0.03 ; The preparation method of the silicate-based energy-storage reflective light-emitting material comprises the following steps:

[0048] a. The molar ratio is n(SrCO 3 ): n(4MgCO 3 ·Mg(OH) 2 ·5H 2 O): n(SiO 2 ): n(Eu 2 o 3 ): n(Dy 2 o 3 ): n(H 3 BO 3 )=1.99:0.194:2:0.005:0.015:0.2 Weigh the raw material SrCO 3 , 4MgCO 3 ·Mg(OH) 2 ·5H 2 O, SiO 2 、Eu 2 o 3 、Dy 2 o 3 and H 3 BO 3 Stir and mix with an appropriate amount of deionized water (that can immerse all raw material components), the stirring time is 5h, and then stand for 2h to make the solid mixture and water layer, remove the water layer and collect the uniformly mixed solid mixture, and then the collected The solid mixture is put into a crucible, and allowe...

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Abstract

The invention provides a silicate based energy storing and light reflecting type luminescent material. The energy storing and light reflecting type luminescent material is characterized in that the structure formula is Sr1.99Mg0.97Si2O7: Eu0.01Dy0.03; rare-earth metals Eu and Dy enter Sr2MgSi2O7 crystal lattices to correspondingly substitute Sr and Mg ions to realize doping; reasonable technical steps and proper technical parameters are performed and adopted; raw materials are stirred and mixed in water, so that the raw material components can be completely dispersed and uniformly mixed, and moreover, the raw material components can be in full contact, so that the convenience of later roasting is ensured; the mixing ratio, the heating rate, the sintering temperature, the sintering time, etc. of the raw material components are strictly controlled; the sintering is carried out by step; the Eu and Dy doping conditions are controlled; the Eu substitutes Sr and occupies the location of Sr;Dy substitutes Mg and occupies the location of Mg, so that the probability of Dy capturing holes can be greatly increased, and as a result, the luminance can be further improved.

Description

technical field [0001] The invention relates to the technical field of luminescent materials, in particular to a silicate-based energy storage reflective luminescent material. Background technique [0002] With the rapid development of the economy and the needs of transportation, my country's highway construction is developing rapidly, and the construction of expressways and tunnels is in a blowout situation. By the end of 2016, 15,181 tunnels with a mileage of 14.0397 million meters had been built in mainland China, a net increase of 1,175 compared with the same period last year. , The mileage is 1,355,800 meters, and the role of highway tunnels in the development of my country's transportation industry is becoming more and more prominent. In order to ensure normal traffic, road tunnels need to provide day and night lighting. The energy consumption of tunnel lighting is astonishing. In order to reduce lighting energy consumption, some road tunnels use the method of turning o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/59
CPCC09K11/7792
Inventor 王锋梁波崔璐璐周平潘国兵夏川茴何世永曹洪
Owner CHONGQING JIAOTONG UNIVERSITY
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