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Low-silver-content ceramic filter conductive silver paste for 5G base station and preparation method and application thereof

A technology of ceramic filter and conductive silver paste, which is applied in the direction of waveguide devices, cable/conductor manufacturing, conductive materials dispersed in non-conductive inorganic materials, etc., can solve the problems of high cost and high silver consumption, and achieve high Conductivity, surface smoothing effects

Inactive Publication Date: 2020-11-20
CHENGDU SCI & TECH DEV CENT CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of high silver consumption and high cost in traditional ceramic metallization technology, reduce the production cost of ceramic filters for 5G base stations, and provide a conductive silver conductive silver for ceramic filters for 5G base stations with low silver content. Pulp and its preparation method

Method used

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  • Low-silver-content ceramic filter conductive silver paste for 5G base station and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Among the present invention, 5G base station is used ceramic filter conductive silver paste, and the selection of material is:

[0023] Conductive filler selects flaky rate 87.5%, particle size is micron and uniform flaky silver powder, the mass fraction of flaky silver powder is 70 parts;

[0024] The resin material is bisphenol A type epoxy resin with at least two reactive epoxy groups in the molecule, which has strong adhesion to metals and strong chemical corrosion resistance. It can be cured in a wide temperature range and has a volume of Shrinkage is small, and the mass fraction of bisphenol A type epoxy resin is 14 parts;

[0025] The curing agent is an acid anhydride curing agent. This example uses phthalic anhydride (PA), a white crystal with a melting point of 128 ° C. The mass fraction of phthalic anhydride (PA) is 5 parts; the diluent is reactive diluent 692 (benzyl glycidyl ether) and non-reactive diluent butyl acetate, the mass parts are respectively 2 pa...

Embodiment 2

[0032] Among the present invention, 5G base station is used ceramic filter conductive silver paste, and the selection of material is:

[0033] The conductive filler is selected from flake silver powder with high flaky rate, large particle width-thickness ratio, and uniform particle size of micron, and the mass fraction of the silver powder is 66 parts.

[0034] The resin material is bisphenol A type epoxy resin with at least two reactive epoxy groups in the molecule, which has strong adhesion to metals and strong chemical corrosion resistance. It can be cured in a wide temperature range and has a volume of Shrinkage is small, and the mass fraction of bisphenol A type epoxy resin is 15 parts.

[0035] The curing agent is acid anhydride curing agent. In this example, bisacid anhydride (MA) is selected as white crystal. The curing condition is 160-200° C., and the mass fraction of bisacid anhydride (MA) is 6 parts.

[0036] The diluents are reactive diluent 692 (benzyl glycidyl ...

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Abstract

The invention relates to low-silver-content ceramic filter conductive silver paste for a 5G base station and a preparation method and application thereof. The silver paste is prepared from the following raw materials in parts by mass: 65-82 parts of conductive filler, 8-15 parts of epoxy resin, 3-8 parts of a curing agent, 4-12 parts of a diluent and 2-5 parts of a plasticizer. By adopting the nano silver paste for spraying, the surface metallization of a 5G dielectric ceramic filter product can be uniform, the silver consumption is low, the cost is greatly reduced, the electrical property andthe application property are excellent, and the conduction property is stable.

Description

technical field [0001] The invention belongs to the technical field of conductive coatings, and in particular relates to a low-silver-content 5G base station ceramic filter conductive silver paste and its preparation method and use. Background technique [0002] With the advent of the 5G era, as of August 2020, the number of 5G users worldwide has exceeded 100 million, covering 72% of countries and 92 operators. More than 700,000 5G base stations have been built, and the number is expected to reach 1.5 million by the end of the year. Each base station consists of 3 antennas, and an average of 64 filters are required on each antenna. Therefore, the total demand for dielectric filters can reach 1 billion, and the number of filters required is huge. In the 5G period, domestic base stations use filter It has broad application and market prospects. [0003] The ceramic filter is made of ceramic material into a sheet, coated with silver on both sides as electrodes, and has a piez...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22H01B13/00H01P1/20
CPCH01B1/22H01B13/00H01P1/20
Inventor 李春宏蒋玉霞康晓丽崔旭东
Owner CHENGDU SCI & TECH DEV CENT CHINA ACAD OF ENG PHYSICS
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