Method for testing fluorescent powder coated film characteristic by tricolor lamp

A characteristic testing, phosphor technology, applied in the direction of fluorescence/phosphorescence, material excitation analysis, etc., to achieve the effect of eliminating hidden dangers and improving the quality of the factory products

Inactive Publication Date: 2009-01-28
CAIHONG GRP ELECTRONICS CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and to provide a method for testing the characteristics of fluorescent powder coatings for trichromatic lamps. This test method is to increase the phosphor coatings for trichromatic lamps on the basis of the existing characteristic detection. Characteristic inspection, to detect the potential problems of the coating tube in the process of using the fluorescent powder of the three primary color lamps in advance, so as to prevent the products from leaving the factory with potential quality problems

Method used

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  • Method for testing fluorescent powder coated film characteristic by tricolor lamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] First, select the phosphor powder that meets the quality standards as the standard phosphor powder for comparison with the phosphor powder to be tested, and then prepare the powder slurry to be tested and the standard powder slurry respectively according to the following steps:

[0023] Mix 13g of the fluorescent powder sample to be tested, 55g of pure water and 20g of PVA (8.5% concentration), and then add 0.5ml of dispersant (1% polypropylene glycol TW-20) and 0.5ml of defoamer (1% Pluronic L-92), stir evenly to make the slurry to be tested;

[0024] The standard fluorescent powder sample of 13g, the pure water of 55g and the PVA (concentration is 8.5%) of 20g are mixed, then add the dispersant of 0.5ml (1% polypropylene glycol TW-20) and the defoamer of 0.5ml ( 1% Pluronic L-92), stir evenly to make standard slurry;

[0025] Put the prepared slurry to be tested and the standard slurry prepared above into a 400ml bottle roller machine respectively, control the rotati...

Embodiment 2

[0029] First, select the phosphor powder that meets the quality standards as the standard phosphor powder for comparison with the phosphor powder to be tested, and then prepare the powder slurry to be tested and the standard powder slurry respectively according to the following steps:

[0030] 25g of the fluorescent powder sample to be tested, 100g of pure water and 30g of PVA (concentration of 8.5%) were mixed, then 1ml of dispersant (1% polypropylene glycol TW-20) and 1ml of defoamer (1ml) were added thereto % Pluronic L-92), stir and make the powder slurry to be tested;

[0031] 25g of standard fluorescent powder samples, 100g of pure water and 30g of PVA (concentration of 8.5%) were mixed, and then 1ml of dispersant (1% polypropylene glycol TW-20) and defoamer (1% Prop Ronic L-92), stir evenly to make a standard slurry;

[0032] Put the prepared slurry to be tested and the standard slurry prepared above into a 500ml bottle roller machine respectively, control the speed of...

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Abstract

The invention discloses a fluorescent powder test method of a trichromatic lamp, which changes a method adopted by existing methods that firstly implements pipe coating and then observation of the coating film quality with naked eyes into a method that firstly implements planar curtain coating and then determination of the coating film quality. The fluorescent powder test method can detect the potential pipe coating problems that exist in the use process of the fluorescent powder used by the trichromatic lamp in advance, effectively solves the color temperature deviation difficulty of lighting tubes that is caused by the original detection difficulties including compactness, film quality and agglomeration of the trichromatic lamp powder, and can guide the continuous improvement of the trichromatic lamp powder techniques, greatly raise the quality of finished products, and prevent the delivery of products with hidden quality troubles.

Description

technical field [0001] The invention belongs to the technical field of fluorescent powder detection for tri-primary-color lamps, and in particular relates to a method for testing the film characteristics of fluorescent powder for tri-primary-color lamps. Background technique [0002] In the process of making tricolor lamp powder, the fluorescent powder is first formulated into a slurry, and then the slurry is evenly coated on the inner wall of the lamp tube. Because the fluorescent powder in the lamp tube emits light, it generates 253.7nm ultraviolet light to excite the fluorescent powder to emit light under the action of Hg gas excited by the electrode. Therefore, the film quality of the phosphor powder coated on the inner wall of the lamp tube will directly affect the luminous characteristics of the lamp tube, especially the color temperature characteristics of the lamp tube. Whether the color temperature of the lamp tube will produce deviation. The reason is mainly due ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
Inventor 付红梅郭涛张帅奇
Owner CAIHONG GRP ELECTRONICS CO LTD
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