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Mechanoluminescence red phosphor and preparation method thereof

A technology of red phosphor and luminescence, which is applied in the direction of luminescent materials, chemical instruments and methods, can solve the problems of no luminescence, etc., and achieve the effect of easy realization and simple preparation process

Inactive Publication Date: 2016-11-23
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently reported mechanoluminescent materials are mainly rare-earth-doped aluminate materials, whose luminescence is in the yellow-green light band, and there is no luminescence in the longer wave band.

Method used

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  • Mechanoluminescence red phosphor and preparation method thereof
  • Mechanoluminescence red phosphor and preparation method thereof
  • Mechanoluminescence red phosphor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Choose barium carbonate, zinc sulfide, manganese carbonate as raw material, according to molar ratio Ba:Zn:S:Mn=1:1:1:0.005, weigh barium carbonate, zinc sulfide, manganese carbonate to be respectively 3.3407g, 1.6496g, 0.0097 g. After the raw materials are ground and mixed, take an appropriate amount into a corundum crucible, then place the crucible in a corundum boat, push the corundum boat into a tube furnace, and bake at 1000°C, 1050°C, and 1100°C for 3 hours under an argon atmosphere. , with natural cooling in the furnace, you can get the luminescence red phosphor BaZn 0.995 OS:0.5%Mn 2+ .

[0035] figure 1 It is the powder X-ray diffraction spectrum of the sample roasted under the different temperatures of the present embodiment, and the spectral line adopts Japanese Rigaku D / max-IIIA X-ray diffractometer to measure, test voltage 40kV, scanning speed 1.2° / min, test current 40mA, select Cu-Kα1 X-ray, the wavelength is X-ray diffraction analysis shows that the...

Embodiment 2

[0039] Select barium oxide, zinc sulfide and manganese oxide as raw materials, weigh a certain amount of the above raw materials respectively according to the molar ratio Ba:Zn:S:Mn=1:1:1:0.005, after the raw materials are ground and mixed, take a part of the raw materials PVA was added for granulation, 5g of the granulated raw material was taken for tableting, and a semi-automatic tableting machine was used to keep it at 10Mpa for 3min to obtain cylindrical flakes of 25×10mm. The flakes were placed in a corundum boat and baked at 1050°C for 6 hours in a vacuum atmosphere; X-ray diffraction analysis showed that it was a BaZnOS crystal phase.

[0040] The baked BaZn 0.995 OS:0.5%Mn 2+ The sample was fixed on the sample stage, rubbed with a corundum rod with a sharp tip, and the triboluminescence signal was collected by a fiber optic spectrometer. Keep the distance between the rubbing tip and the fiber optic probe at 8mm. Rubbing with a corundum rod under sunlight, a clear re...

Embodiment 3

[0042]Select barium hydroxide, zinc sulfide, and manganese carbonate as raw materials, and weigh a certain amount of the above raw materials according to the molar ratio Ba:Zn:S:Mn=1:1:1:0.005. After the raw materials are ground and mixed, take an appropriate amount into a corundum crucible, then place the crucible in a corundum boat, push the corundum boat into a tube furnace, and bake at 1050°C for 5 hours under an argon atmosphere, then cool naturally with the furnace. Grind the obtained sample evenly to obtain the luminescence red phosphor BaZn 0.995 OS:0.5%Mn 2+ . The obtained phosphor powder was evenly mixed with the transparent epoxy resin, and cured at room temperature for 8 hours to obtain a cylindrical phosphor powder resin composite material with a size of 25×15 mm. The WEW-600 microcomputer-controlled universal testing machine was used to carry out the pressure luminescence test, and the pressure applied was controlled from 0N to 5000N. At the same time, the opti...

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Abstract

The invention discloses mechanoluminescence red phosphor with the expression formula of BaZn(1-x)OS:xMn2+, wherein x is larger than or equal to 0.1% and is smaller than or equal to 1.0%, and active ions are Mn2+ ions. The invention further discloses a preparation method of the mechanoluminescence red phosphor. The method comprises the steps that 1, a barium-containing compound, a sulfur-containing compound, a zinc-containing compound and a manganese-containing compound are weighed as raw materials; 2, the compound raw materials weighed in the step 1 are ground to be uniform and roasted in protective atmosphere or vacuum at the temperature of 900-1100 DEG C for 2-10 h; 3, the samples roasted in the step 2 are taken out and ground to obtain the mechanoluminescence red phosphor. The mechanoluminescence red phosphor has an obvious response for mechanical force stimulation, and is visible to naked eyes in daytime through triboluminescence, low in cost and simple in preparation process.

Description

technical field [0001] The invention relates to luminescent materials, in particular to a mechanoluminescence red fluorescent powder and a preparation method thereof. Background technique [0002] The determination of the stress magnitude and distribution of material structural components is extremely important for improving the reliability and safety of components and expanding their application fields. Existing typical techniques for detecting stress include resistance strain gauges, piezoelectric sensors, and the like. These technologies use electrical signals as detection signals. When collecting signals, electrodes must be kept in good physical contact with the measured parts. Therefore, they are only used for stationary components, and it is difficult to measure the stress on cutting tools or gas turbines. Furthermore, they are not suitable for determining the stress distribution due to sensor size and measurement point limitations. At present, the measurement of str...

Claims

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Application Information

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IPC IPC(8): C09K11/56
CPCC09K11/576
Inventor 彭明营李乐京
Owner SOUTH CHINA UNIV OF TECH
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