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Method for detecting attenuation resistance characteristic of fluorescent powder

A detection method and phosphor technology, applied in the measurement of color/spectral characteristics, etc., can solve problems such as large attenuation, and achieve the effect of strong anti-attenuation performance

Inactive Publication Date: 2015-01-21
CAIHONG GRP ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art above, the object of the present invention is to provide a method for detecting the anti-attenuation characteristics of phosphor powder, which can directly detect the anti-attenuation characteristics of phosphor powder, avoiding the complicated process of making lamps, and by detecting the anti-attenuation characteristics of phosphor powder The early detection of the characteristics avoids the problem of large attenuation after the fluorescent lamp is made, reduces the manufacturing cost, and also plays a role in promoting the quality of the fluorescent powder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Verification of different batches of products

[0028] Weigh 60 grams of three different batches of fluorescent powder to be tested, add them to 150 grams of hot pure water, the temperature of the pure water is 85 degrees Celsius, after stirring evenly, carry out ultrasonic dispersion respectively, ultrasonic power 200w, ultrasonic time After 3 minutes, the slurry is settled. After 3 hours of sedimentation, pour off the clarified liquid on the upper layer of the slurry, and put it into a dryer at 120 degrees Celsius for drying. After drying for 12 hours, take it out and let it cool, and pass through 120 mesh and 240 mesh respectively. Sieve each again. Sampling was carried out using a vacuum ultraviolet spectrometer to detect the brightness maintenance rate before and after slurrying.

Embodiment 2

[0029] Example 2: Method Consistency Verification

[0030] Weigh three portions of a fluorescent powder to be tested, 60 grams each, and add them to 150 grams of hot pure water. The temperature of the pure water is 85 degrees Celsius. After stirring evenly, carry out ultrasonic dispersion respectively. After 3 hours of sedimentation, pour off the clarified liquid on the upper layer of the slurry, and put it into a dryer at 120 degrees Celsius for drying. After drying for 12 hours, take it out and let it cool, and pass through 120 mesh and 240 mesh sieves respectively. Net each again. Sampling was carried out using a vacuum ultraviolet spectrometer to detect the brightness maintenance rate before and after slurrying.

Embodiment 3

[0031] Example 3: Range Verification 1

[0032] Weigh 50 grams of two different batches of fluorescent powder to be tested, respectively, add them to 150 grams of hot pure water, the temperature of the pure water is 80 degrees Celsius, after stirring evenly, carry out ultrasonic dispersion respectively, ultrasonic power 200w, ultrasonic time After 3 minutes, the slurry is settled. After 3 hours of settlement, pour off the clarified liquid on the upper layer of the slurry, and put it into a dryer at 100 degrees Celsius for drying. After drying for 8 hours, take it out and let it cool, and pass through 120 mesh and 240 mesh respectively. Sieve each again. Sampling was carried out using a vacuum ultraviolet spectrometer to detect the brightness maintenance rate before and after slurrying.

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Abstract

The invention discloses a method for detecting attenuation resistance characteristic of fluorescent powder. The method comprises the following steps: adding water into the fluorescent powder, mixing so as to obtain a mixture, slurrying the mixture, heating, drying, dispersing, sieving, stimulating by a vacuum ultraviolet spectrum analyzer and qualitatively judging the strength of the attenuation resistance characteristic of the fluorescent powder according to the brightness retention rate before and after the slurrying of the powder.

Description

technical field [0001] The invention relates to a method for detecting the characteristic of fluorescent powder, in particular to a method for detecting the anti-attenuation characteristic of fluorescent powder. Background technique [0002] With the continuous development of human society and the continuous improvement of people's material living standards, people's requirements for lighting sources are constantly updated. Compact, high-load lamps with shades have become the mainstream in the lighting field. Compared with the previous products, the tube diameter of this type of product is thinner, the tube pressure is higher, and the short-wave ultraviolet radiation in the tube is continuously enhanced with the thinning of the tube diameter, which increases the attenuation of the fluorescent lamp and causes problems such as light decay and color drift. [0003] At present, the fluorescent powder used in lamps is mainly based on the detection of powder characteristics, and f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/33
Inventor 薛敏华
Owner CAIHONG GRP ELECTRONICS CO LTD
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