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Conductive silver paste for filter and preparation method and sintering method thereof

A conductive silver paste and filter technology, which is applied in cable/conductor manufacturing, conductive materials dispersed in non-conductive inorganic materials, circuits, etc., can solve poor adhesion, not suitable for 5G ceramic base filters, conductive silver Solve problems such as poor Q value of paste, achieve good compactness, good silver layer dense adhesion, and good leveling advantages

Active Publication Date: 2020-07-10
湖南省国银新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing conductive silver paste has poor Q value and poor adhesion, so it is not suitable for 5G ceramic base filters

Method used

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  • Conductive silver paste for filter and preparation method and sintering method thereof
  • Conductive silver paste for filter and preparation method and sintering method thereof
  • Conductive silver paste for filter and preparation method and sintering method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: (does not contain platinum group metal oxide)

[0030] A preparation method of conductive silver paste for filter:

[0031] (1) By mass percentage, weigh 1% of ethyl cellulose STD~200, 9% of polymethacrylic resin BM90, 10% of diethylene glycol butyl ether, 15% of alcohol ester twelve, 50% of diethylene glycol ethyl ether acetate, 10% tributyl citrate, 5% Span 85, heating and stirring at 50-100° C. to obtain an organic vehicle.

[0032] (2) Weigh 5g of Bi-Si-Cu-B-Li-Sn-O system glass powder, 35g of organic carrier prepared in step (1), 48g of main silver powder, 12g of auxiliary silver powder; wherein, the main silver powder is round The spherical silver powder has a particle size distribution of 0.3 μm for D10, 0.8 μm for D50, and 2.0 μm for D90; the auxiliary silver powder is flake silver powder, and the particle size distribution is 0.3 μm for D10, 1 μm for D50, and 3.5 μm for D90; the glass The average particle size of the powder was 1 μm.

[0033] (...

Embodiment 2

[0034] Embodiment 2: (containing platinum group metal oxide)

[0035] (1) By mass percentage, take by weight 2% ABS resin, 3% phenolic resin 2402, 20% alcohol ester hexadecane, 45% diethylene glycol butyl ether acetate, 10% tributyl citrate , 5% terpineol, 10% Span 85, 5% lecithin, heated and stirred at 50-100° C. to obtain an organic vehicle.

[0036](2) Weigh 1g of Bi-Si-Cu-B-Li-Sn-O system glass powder, 8.9g of organic carrier prepared in step (1), 0.1g of palladium oxide, 88g of main silver powder, and 2g of auxiliary silver powder; wherein, The main silver powder is spherical silver powder, and the particle size distribution is 0.35 μm for D10, 1.0 μm for D50, and 2.2 μm for D90; the auxiliary silver powder is flake silver powder, and the particle size distribution is 0.35 μm for D10, 0.8 μm for D50, and The average particle size of the glass powder is 2 μm; the average particle size of palladium oxide is 1.5 μm.

[0037] (3) Add the above-mentioned materials into a fas...

Embodiment 3

[0038] Embodiment 3: (containing platinum group metal oxide)

[0039] (1) by mass percentage, take by weighing 4% polyester resin, 4% hydrogenated rosin resin, 10% alcohol ester twelve, 60% diethylene glycol ethyl ether acetate, 10% tributyl citrate , 10% DBE, 2% Span 85, heated and stirred at 50-100°C to obtain an organic vehicle;

[0040] (2) Take by weighing 5g of Bi-Si-Cu-B-Li-Sn-O system glass powder, 14g of organic carrier prepared in step (1), 2g of platinum oxide, 1g of ruthenium oxide, 70g of main silver powder, and 8g of auxiliary silver powder; Wherein, the main silver powder is a spherical silver powder, and the particle size distribution is 0.35 μm for D10, 2.2 μm for D50, and 3.0 μm for D90; the auxiliary silver powder is flake silver powder, and the particle size distribution is 0.4 μm for D10, and 1.5 μm for D50. , D90 is 4.0 μm, the average particle size of the glass powder is 3 μm; the average particle size of platinum oxide is 2.0 μm; the average particle s...

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Abstract

The invention provides conductive silver paste for a filter and a preparation method and a sintering method thereof, and belongs to the technical field of conductive silver paste. The conductive silver paste for the filter comprises the following components in percentage by mass: 60-90% of silver powder, 1-5% of glass powder, 0-3% of platinum group metal oxide and the balance of an organic carrier, the silver powder comprises main silver powder accounting for 80-98% of the total mass of the silver powder and auxiliary silver powder accounting for 2-20% of the total mass of the silver powder. The main silver powder is spherical silver powder, the auxiliary silver powder is flaky silver powder, the main silver powder and the auxiliary silver powder are high in activity, high in tap density and very concentrated in particle size distribution, and the two kinds of silver powder can complement respective advantages and coordinate with each other after being mixed and matched according to acertain proportion, so that the overall silver paste performance is greatly improved. The conductive silver paste for the filter prepared through mutual cooperation of the components is good in compactness, high in welding resistance, high in Q value, good in adhesive force and high in universality.

Description

technical field [0001] The invention relates to the technical field of conductive silver paste, in particular to a conductive silver paste for a filter, a preparation method and a sintering method thereof. Background technique [0002] With the development of communication technology, especially 5G communication technology, the 5G ceramic closed base industry will usher in rapid development, and the market demand will become more and more vigorous. From the perspective of market development, 2019 is the first year of 5G construction, and 2020 will be the starting point for heavy investment in the industry, which is expected to reach its peak in 2021-2023. According to estimates, the global base station filter market space in the 5G era is expected to exceed 80 billion yuan, and conductive paste is one of the key materials for base filters. The demand for ceramic silver paste for 5G filters will reach 2,000 tons, for The 5G filter ceramic silver paste industry has brought a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/16H01B1/22H01B13/00
CPCH01B1/16H01B1/22H01B13/00
Inventor 刘宵杨华荣王翔闫仁泉严红革陈吉华
Owner 湖南省国银新材料有限公司
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