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Method for preparing coating material of suppressing hot hunch-up deformation of shadow mask

A technology of spraying materials and arch deformation, which is applied in the direction of chemical instruments and methods, non-luminescent electrode manufacturing, and other chemical processes, which can solve the problems of poor deformation effect, poor adhesion, and high requirements, and achieve low production costs and heat suppression Effect of deformation, good economic and social benefits

Inactive Publication Date: 2003-10-29
CAIHONG GRP ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the above materials as spraying materials for suppressing thermal arching deformation of the shadow mask has disadvantages such as poor effect of suppressing thermal arching deformation of the shadow mask, or high requirements for other items of color tubes, or poor adhesion, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The preparation method comprises the steps in turn:

[0013] a. First, fully mix the low-melting glass and bismuth oxide;

[0014] B, form spraying material with mixture and carrier rolling; The weight ratio of its spraying material is: low-melting point glass: bismuth oxide: carrier=0.8: 1.8: 0.8;

[0015] c, the weight ratio of the carrier is: butyl acetate: nitrocellulose=105:1

[0016] d. Spray the above-mentioned spraying material with a spray gun to the small hole side after blackening, and then sinter and weld to form a shadow mask without arch deformation.

Embodiment 2

[0018] The preparation method comprises the steps in turn:

[0019] a. First, fully mix the low-melting glass and bismuth oxide;

[0020] B, form spraying material with mixture and carrier rolling; The weight ratio of its spraying material is: low-melting point glass: bismuth oxide: carrier=0.9: 1.9: 0.9;

[0021] C, the weight ratio of carrier is: butyl acetate: nitrocellulose=106: 1;

[0022] d. Spray the above-mentioned spraying material with a spray gun to the small hole side after blackening, and then sinter and weld to form a shadow mask without arch deformation. Example 3

Embodiment 3

[0023] The preparation method comprises the steps in turn:

[0024] a. First, fully mix the low-melting glass and bismuth oxide;

[0025] B, form spraying material with mixture and carrier rolling; The weight ratio of its spraying material is: low melting point glass: bismuth oxide: carrier=1.2: 2.2: 1.2;

[0026] c, the weight ratio of the carrier is: butyl acetate: nitrocellulose=106:1

[0027] d. Spray the above-mentioned spraying material with a spray gun to the small hole side after blackening, and then sinter and weld to form a shadow mask without arch deformation.

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Abstract

A paint for suppressing the thermal arch deformation of shadow mask is prepared through proportionally mixing low-melting-point glass with bismuth oxide, adding carrier prepared from butyl acetate and nitrocotton, and grinding. Its advantages are high effect and adhesion, and low cost.

Description

1. Technical field [0001] The invention relates to a preparation method of a spray material for suppressing thermal dome deformation of a shadow mask. 2. Background technology [0002] In the manufacture of color picture tubes, in order to suppress the thermal arching deformation of the shadow mask and improve the picture quality of the color tube, a layer of material is sprayed on the small hole side of the shadow mask. The spraying materials used in the prior art mainly include: non-conductive low Melting point glass; conductive low melting point glass; mixture of bismuth oxide and water glass, etc. Using the above-mentioned materials as spraying materials for suppressing thermal doming deformation of shadow masks has disadvantages such as poor suppression of thermal doming deformation of shadow masks, high requirements for other items of color tubes, or poor adhesion. 3. Contents of the invention [0003] The purpose of the present invention is to provide a low-cost, e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/00H01J9/14
Inventor 金军王勇王建平李玉琪
Owner CAIHONG GRP ELECTRONICS CO LTD
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