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Ferric oxide highly resistant graphite material capable of suppressing high-voltage flashover current and uses thereof

A graphite material and iron oxide technology, applied in the direction of iron oxide, conductive materials, conductive materials, etc., can solve the problems of limited increase in current resistivity, uneven coating, low efficiency, etc., to achieve suppression of high-voltage flashover current and production efficiency High, uniform coating effect

Inactive Publication Date: 2006-03-08
CAIHONG GRP ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] prior art measures defect 1. Install the suppression ring on the focusing pole of the electron gun Unable to suppress flashover from anode to focusing pole electric current 2. Improve the resistivity of inner-coated graphite and neck graphite The resistivity increase is limited and cannot be greatly suppressed. control high voltage sparkover current 3. Brush oxidation on the appropriate position of the inner surface of the cone Titanium high resistance graphite The cost of titanium oxide graphite is high, and brushing makes production Low efficiency, uneven coating

Method used

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  • Ferric oxide highly resistant graphite material capable of suppressing high-voltage flashover current and uses thereof
  • Ferric oxide highly resistant graphite material capable of suppressing high-voltage flashover current and uses thereof
  • Ferric oxide highly resistant graphite material capable of suppressing high-voltage flashover current and uses thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] According to the formula (weight ratio): iron oxide 22%, graphite 5%, adhesive 50%, pure water 23% to prepare iron oxide high-resistance graphite material, and spray the iron oxide high-resistance graphite material on the inner surface of the 54cmFS tube cone of the picture tube Later, the measured resistance between the cone anode cap and the BSP sheet is 12KΩ~15KΩ, and the whole tube induces high-voltage flashover current ≤230A P-P .

Embodiment 2

[0018] According to the formula (ie weight ratio): iron oxide 24%, graphite 4%, adhesive 50%, pure water 22% to prepare iron oxide high-resistance graphite material, and spray the iron oxide high-resistance graphite material on the inner surface of the 54cmFS tube cone of the picture tube Later, the measured resistance between the cone anode cap and the BSP sheet is 18KΩ~22KΩ, and the whole tube induces high-voltage flashover current ≤180A P-P .

[0019] Due to the high cost of titanium oxide graphite and the difficulty of spraying, it can only be applied by brushing, resulting in uneven film quality and low production efficiency; the iron oxide high-resistance graphite material of the present invention has low cost, easy spraying, and uniform film quality , The advantage of high production efficiency.

[0020] The purpose of the iron oxide high-resistance graphite material of the present invention is mainly to use the material in the manufacturing process of the picture tube, and...

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Abstract

The invention advances a ferric oxide high-resistance graphite material prohibiting high-voltage sparking current and its use, containing ferric oxide 22%-27%, graphite 4%-6%, adhesive 47%-53% and pure water 14%-27%. Its use: it is used in the course of manufacturing kinescopes and uniformly sprayed on the inner surface of the kinescope cone. Because its resistivity is high, it has the special function and advantage of increasing in-painted graphite resistance, effectively prohibiting high-voltage sparking current and achieving the purpose in not damaging line devices of the whole device at the time of high-voltage sparking.

Description

Technical field [0001] The present invention relates to a new type of material, in particular to an iron oxide high-resistance graphite material for suppressing high-voltage flashover current, and the material is mainly used in picture tubes. Background technique [0002] Existing technical measures Defect 1. Install a suppression ring on the focusing electrode of the electron gun Can not suppress flashover from anode to focusing electrode Current 2. Improve the resistivity of inner coated graphite and tube neck graphite The increase in resistivity is limited and cannot be greatly suppressed Control high-voltage flashover current 3. Brush the oxidation on the appropriate position on the inner surface of the cone Titanium high resistance graphite Titanium oxide graphite is costly, brushing makes production Low efficiency, uneven coating Summary of the invention [0003] The purpose of the present invention is to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J29/88H01B1/08H01B1/00C01G49/06C01B31/00
Inventor 吕军顺肖海文李玉琪
Owner CAIHONG GRP ELECTRONICS CO LTD
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