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Preparation method of fluorescent material used for optical fiber temperature measuring sensor probes

A sensor probe, fluorescent material technology, applied in the directions of luminescent materials, chemical instruments and methods, instruments, etc., can solve the problems of low temperature measurement accuracy and narrow temperature measurement range of fluorescent powder, and achieve high fluorescence conversion efficiency, small particle size, The effect of uniform particle size

Inactive Publication Date: 2019-10-15
江苏中科上古科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no special phosphor powder for optical fiber temperature measurement sensor on the market, and the available phosphor powder has problems such as low temperature measurement accuracy and narrow temperature measurement range. It is urgent to develop a phosphor suitable for optical fiber temperature measurement probes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] A method for preparing a fluorescent material for an optical fiber temperature measuring sensor probe, the preparation method comprising the following steps:

[0025] S1, put Y first 2 o 3 、Eu 2 o 3 and Na 2 CO 3 Dissolved in dilute nitric acid, prepared into a solution for later use;

[0026] S2. Add acetylacetone and absolute ethanol to the solution prepared in S1, and then magnetically stir until uniform;

[0027] S3, adjust the solution prepared in S2 to be weakly acidic, and continue magnetic stirring to obtain a wet gel;

[0028] S4. After the wet gel is dried, the precursor powder is obtained by calcination;

[0029] S5, mixing the precursor powder prepared in S4 with sulfur powder, and calcining under weak reducing conditions;

[0030] S6. After the calcination is completed, naturally cool to room temperature to obtain a phosphor product.

[0031] Among them, the Na in the S1 2 CO 3 with Y 2 o 3 The mass ratio is 1:1-3.

[0032] Wherein, the ratio ...

Embodiment 1

[0040] The present invention also proposes a preparation method of a fluorescent material for an optical fiber temperature measuring sensor probe, the preparation method comprising the following steps:

[0041] S1, put Y first 2 o 3 、Eu 2 o 3 and Na 2 CO 3 Dissolve in dilute nitric acid with a concentration of 68%, and make a solution for later use;

[0042] S2. Add acetylacetone and absolute ethanol to the solution prepared in S1, and magnetically stir for 5 hours at a temperature of 80° C., so that the acetylacetone and absolute ethanol are uniformly mixed with the solution obtained in S1;

[0043] S3, add ammonia water to adjust the solution prepared in S2 to be weakly acidic, so that the pH value of the solution is 5, and continue magnetic stirring to obtain a wet gel;

[0044] S4. After the wet gel is dried, it is calcined at a temperature of 600° C. for 2 hours to obtain a precursor powder;

[0045] S5, mixing the precursor powder prepared in S4 with sulfur powder...

Embodiment 2

[0052] The present invention also proposes a preparation method of a fluorescent material for an optical fiber temperature measuring sensor probe, the preparation method comprising the following steps:

[0053] S1, put Y first 2 o 3 、Eu 2 o 3 and Na 2 CO 3 Dissolve in dilute nitric acid with a concentration of 68%, and make a solution for later use;

[0054] S2. Add acetylacetone and absolute ethanol to the solution prepared in S1, and magnetically stir at a temperature of 90° C. for 6 hours, so that the acetylacetone and absolute ethanol are uniformly mixed with the solution obtained in S1;

[0055] S3, add ammonia water to adjust the solution prepared in S2 to be weakly acidic, so that the pH value of the solution is 6, and continue magnetic stirring to obtain a wet gel;

[0056] S4. After the wet gel is dried, it is calcined at a temperature of 650° C. for 3 hours to obtain a precursor powder;

[0057]S5, mixing the precursor powder prepared in S4 with sulfur powder,...

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Abstract

The invention discloses a preparation method of a fluorescent material used for optical fiber temperature measuring sensor probes. The preparation method comprises following steps: 1, Y2O3, Eu2O3, andNa2CO3 are dissolved in diluted nitric acid to prepare a solution; 2, acetylacetone and absolute ethyl alcohol are added into the solution prepared in step 1, and magnetic stirring is carried out foruniform mixing; 3, a mixed solution obtained in step 2 is adjusted to be weakly acidic, and magnetic stirring is carried out continuously so as to obtain a wet gel; 4, the wet gel is dried and calcined to obtain a precursor powder; 5, the precursor powder obtained in step 4 is mixed with sulfur powder, and calcining is carried out under weak reduction conditions; 6, after calcining, natural cooling is carried out to room temperature so as to obtain the fluorescent material. The preparation method is scientific, reasonable, and simple, and is convenient in operation; the obtained fluorescent powder is uniform in doping, uniform in particle size distribution, small in particle size, high in fluorescence conversion efficiency, and excellent in temperature measuring performance; and the structure is dispersed, and agglomeration is not caused.

Description

technical field [0001] The invention belongs to the technical field of fluorescent materials for electric equipment, and in particular relates to a method for preparing fluorescent materials for probes of optical fiber temperature measuring sensors. Background technique [0002] In the power industry, the safety of power equipment is always the top priority. Due to the frequent failure of power equipment due to abnormal temperature, the fiber optic temperature sensor has high reliability, long life, intrinsic safety, and is not affected by high voltage and strong magnetic field. It is more and more widely used in the electric power industry because of its influence and other characteristics. The fluorescent material of the probe is one of the important factors that determine the performance of the optical fiber temperature sensor. Therefore, the fluorescent material suitable for the optical fiber temperature sensor has attracted more and more attention. Most of the power ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/84G01K11/32
CPCC09K11/7784G01K11/3213
Inventor 刘舵黄素娟何镇安豆西博赵源刘学斌
Owner 江苏中科上古科技有限公司
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