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sealant paste

A sealing material and paste technology, applied in the manufacture of discharge tubes/lamps, electrode systems, cold cathodes, etc., can solve the problem of difficulty in improving the productivity of fluorescent display tubes, deterioration of resin, and difficulty in maintaining air tightness inside fluorescent display tubes. And other issues

Active Publication Date: 2021-11-05
NIPPON ELECTRIC GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, resin-based adhesives cannot completely block the intrusion of moisture, so there are problems in that it is difficult to maintain the airtightness inside the fluorescent display tube, and the resin is easily deteriorated by ultraviolet rays and moisture.
However, in addition to the lack of durability of the sealing part, metal solder also has the problem that it is difficult to improve the productivity of fluorescent display tubes.

Method used

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Examples

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Embodiment

[0077] Hereinafter, the present invention will be described in detail based on examples. In addition, the following Example is a mere illustration. The present invention is not limited in any way by the following examples.

[0078] Table 1 shows examples (sample Nos. 1 to 7) and comparative examples (sample Nos. 8 to 12) of the present invention.

[0079] [Table 1]

[0080]

[0081] The glass powders described in the table were produced as follows. First, in order to obtain lead-based glass or bismuth-based glass having the following glass composition, various raw materials were prepared to prepare a glass batch, which was put into a platinum crucible and melted at 900-1000°C for 1-2 hours. During melting, stirring was performed using a platinum rod to homogenize the molten glass. Next, a part of the obtained molten glass was flowed out between water-cooled twin rolls, and formed into a film. In addition, lead-based glass contains PbO 86%, B 2 o 3 13%, SiO 2 1%. In...

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Abstract

The sealing material paste of the present invention is a sealing material paste containing a sealing material, a resin binder, and a solvent, and is characterized in that the sealing material contains at least glass powder and refractory filler powder, and the content of the sealing material is 90.0 to 99.9% by mass. , record the 10% particle size of the sealing material as D 10 , Record the 50% particle size of the sealing material as D 50 , Record the 90% particle size of the sealing material as D 90 when satisfying D 10 ×3<D 50 、D 50 ×3<D 90 Relationship.

Description

technical field [0001] The present invention relates to a sealing material paste, and specifically relates to a sealing material suitable for sealing soda-lime glass plates of display tubes such as fluorescent display tubes. Background technique [0002] A fluorescent display tube generally has a structure in which two soda-lime glass plates (cover glass and base glass) are arranged at predetermined intervals and their outer peripheral edges are sealed with a sealing material. In many cases, the soda-lime glass plate used as the base glass forms a frame portion at the outer peripheral end edge portion for accommodating components. In addition, side spacers made of soda lime glass may also be disposed on the outer peripheral end edge of the soda lime glass plate (see Patent Documents 1 to 3). [0003] As the sealing material, resin-based adhesives, metal solders, composite inorganic powders containing glass powder and refractory filler powder, and the like are used. [0004...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C8/24H01J9/26
CPCC03C8/24H01J9/26
Inventor 加纳邦彦
Owner NIPPON ELECTRIC GLASS CO LTD
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