Unlock instant, AI-driven research and patent intelligence for your innovation.

Silver-coated glass powder for conduction, method for producing same, and conductive paste

A technology of glass powder and manufacturing method, applied in the direction of conductive adhesives, conductive materials dispersed in non-conductive inorganic materials, adhesive additives, etc., can solve the problem of no fluidity, poor dispersion and conductivity, and inability to maintain the wallet Problems such as the shape of glass-coated powder particles, to achieve the effect of excellent dispersion and conductivity

Inactive Publication Date: 2016-09-14
DOWA ELECTRONICS MATERIALS CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when silver-coated glass powder is directly used in conductive paste, conductivity cannot be obtained, and it needs to be mixed with conductive powder such as copper powder to improve the conductivity of the paste (refer to Japanese Patent Application Laid-Open Publication No. 9-296158 )
That is, in Comparative Example 2 and Table 1 of Japanese Patent Laid-Open No. 9-296158, it is described that "100 parts by mass of silver-coated glass powder (below 38 μm in particle size), 10 parts by mass of epoxy resin, 6 parts by mass of amine-based curing agent Parts by mass and 5 parts by mass of reaction diluent were kneaded, but it became a dry state without fluidity and did not form a paste
In addition, heat curing was also tried, but it could not be formed into flakes, and the physical properties could not be measured." It can be seen that if silver-coated glass powder is used alone, the dispersibility and conductivity are poor.
[0005] In addition, if the silver-coated glass powder is fired, since the silver is sintered and the glass powder is softened, the particle shape of the silver-coated glass powder cannot be maintained. Therefore, as in Japanese Patent Laid-Open No. 9-296158, only resin curing type conductive paste, there is basically no research on the application of firing type conductive paste

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Silver-coated glass powder for conduction, method for producing same, and conductive paste
  • Silver-coated glass powder for conduction, method for producing same, and conductive paste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Bi as the average particle size of 1.1 μm 2 o 3 ·SiO2 2 ·B 2 o 3 173 g of ASF-1094 manufactured by Asahi Glass Co., Ltd. was prepared as a glass powder as a component.

[0075] First, this glass powder is dipped in an acidic aqueous solution of hydrochloric acid of stannous chloride. After impregnated, filtered and washed with water, the Sn-adhered2+ The glass powder (imparting sensitivity step).

[0076] will be attached with Sn 2+ The glass powder is put into the reaction tank, and the pure water in the reaction tank is in a stirred state. To stir and disperse the attached Sn 2+ 600 g of silver nitrate aqueous solution containing 173 g of silver was thrown into the reaction tank of the glass powder, and silver was deposited on the surface of the glass powder (silver precipitation step).

[0077] Next, 400 g of 28 mass % ammonia water and 40 g of 20 mass % sodium hydroxide aqueous solution were added to this reaction tank, and the aqueous solution of the silver...

Embodiment 2

[0091] In addition to using glass powder with an average particle size of 1.6 μm, using Bi 2 o 3 ·B 2 o 3 - Except for 173 g of GF-3520 manufactured by Okuno Pharmaceutical Co., Ltd. having ZnO as a component, it was treated in the same manner as in Example 1 to obtain the conductive silver-coated glass powder of Example 2. The silver content in the obtained silver-coated glass powder was 50% by mass.

[0092] The obtained conductive silver-coated glass powder was carried out in the same manner as in Example 1, and the tap density, average particle diameter, BET specific surface area, and ignition loss were measured. The results are shown in Table 1.

Embodiment 3

[0094] In addition to using SiO with an average particle size of 4.5 μm as the glass powder 2 ·B 2 o 3 ·CAO·Al 2 o 3 Be that the particle shape of component is spherical, 173g Potters-Ballotini Co., Ltd (Potters-Ballotini Co., Ltd.) manufactures EMB-10, process in the same way as in Example 1 to obtain the conductive powder of Example 3. Silver coated glass powder. The silver content in the obtained silver-coated glass powder was 50% by mass.

[0095] The obtained conductive silver-coated glass powder was carried out in the same manner as in Example 1, and the tap density, average particle diameter, BET specific surface area, and ignition loss were measured. The results are shown in Table 1. In addition, the shape of the conductive silver-coated glass powder was observed using a scanning electron microscope (manufactured by JEOL Ltd., JSM-6100). As a result, it was confirmed that the silver-coated glass powder maintained the spherical particle shape before silver coating...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The invention provides silver-coated glass powder for conduction and a manufacture method thereof and a conductive paste. A surface treating agent is adhered to the silver-coated glass powder for conduction, and silver content is above 10 mass%. The surface treating agent is preferably at least one of benzotriazole type, fatty acid, and the salt thereof.

Description

technical field [0001] The present invention relates to conductive silver-coated glass powder and conductive silver-coated glass powder used in electronic components such as internal electrodes of multilayer capacitors, conductive patterns of circuit boards, solar cells, electrodes of plasma display panel substrates, and circuits The production method and the conductive paste. Background technique [0002] Conventionally, as a conductive paste used in electronic components such as internal electrodes of multilayer capacitors, conductive patterns of circuit boards, electrodes of solar cells, and plasma display panel (PDP) substrates, circuits, etc., silver powder and glass powder A conductive paste produced by adding together to an organic medium and kneading. Such a conductive paste is required to have conductivity with lower resistance as a characteristic. Therefore, as the conductive powder used in the conductive paste, in addition to silver powder, many proposals have b...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/10B22F9/24B22F1/00C09J9/02C09J11/04C03C8/18
CPCC03C12/00C03C17/06H01B1/22
Inventor 藤野刚聪野上德昭中野谷太郎平田晃嗣
Owner DOWA ELECTRONICS MATERIALS CO LTD