A kind of efficient 5g ceramic dielectric filter conductive silver paste and preparation method thereof

A technology of ceramic medium and conductive silver paste, which is used in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, circuits, etc. It can solve the problems of unsatisfactory dispersion of conductive silver paste and improve metallization efficiency , Improve the effect of dispersion and rheology

Active Publication Date: 2021-11-26
大连海外华昇电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] According to the above mentioned problems such as unsatisfactory dispersion of conductive silver paste in the prior art, the present invention provides a highly efficient 5G ceramic dielectric filter conductive silver paste through efficient powder dispersion technology and ultra-high powder content and its preparation method

Method used

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  • A kind of efficient 5g ceramic dielectric filter conductive silver paste and preparation method thereof
  • A kind of efficient 5g ceramic dielectric filter conductive silver paste and preparation method thereof
  • A kind of efficient 5g ceramic dielectric filter conductive silver paste and preparation method thereof

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preparation example Construction

[0049] The present invention also discloses a method for preparing the above-mentioned high-efficiency 5G ceramic dielectric filter conductive silver paste. The solvent and the dispersant are divided into parts for standby use, and the specific number of parts is distributed according to needs, which specifically includes the following steps:

[0050]1) According to the preset mass percentage, mix the organic binder into the solvent I, and stir the rotor at 20-40 rpm at 30-60°C for 5-15 minutes, and form glue after stirring evenly. The glue is divided into spare parts; preferably, the rotor can be rotated at 25-35 rpm at 40-50°C and stirred for 10 minutes;

[0051] 2) Put the solvent II, glue I, silver powder, and dispersant I into the power mixing mixer according to the preset mass percentage, and stir while feeding, and the stirring bar rotates at 20-50 rpm. Speed ​​25-35 rpm;

[0052] 3) Continue to stir the mixture obtained in step 2) for 15-30 minutes, the speed of the s...

Embodiment 1

[0061] A high-efficiency 5G ceramic dielectric filter conductive silver paste, including the following components by mass percentage: 89% spherical silver powder, 1.5% glass powder, 1.5% ethyl cellulose, 0.1% magnesium oxide additive and 7.5% benzyl alcohol, Polymethacrylamide 0.30%, hydrogenated castor oil 0.1%. Among them, the particle size of the spherical silver powder is 0.3 μm, and the glass powder is Bi 2 o 3 -BO-SiO 2- Ag 2 O system glass powder, glass powder particle size 0.2μm, magnesium oxide particle size 0.1μm.

[0062] Prepared as follows:

[0063] Divide the benzyl alcohol solvent into 5 parts, and the polymethacrylic amine dispersant into 3 parts for later use. The specific parts are distributed according to the needs, and the corresponding fractions are marked with Roman numerals. The specific steps are as follows:

[0064] 1) According to the preset mass percentage, mix ethyl cellulose with benzyl alcohol solvent Ⅰ, and stir the rotor at 30 rpm at 50°C f...

Embodiment 2

[0075] The difference from Example 1 is that the high-efficiency 5G ceramic dielectric filter conductive silver paste includes the following components by mass percentage: spherical silver powder 90%, glass powder 1.8%, ethyl cellulose 1.0%, magnesium oxide Additive 0.1% and benzyl alcohol 6.7%, polymethacrylic acid amine 0.30%, hydrogenated castor oil 0.1%. Among them, the particle size of the spherical silver powder is 0.3 μm, and the glass powder is Bi 2 o 3 -BO-SiO 2- Ag 2 O system glass powder, glass powder particle size 0.2μm, magnesium oxide particle size 0.1μm. The fineness of the conductive silver paste for the filter is 2 μm.

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Abstract

The invention provides a high-efficiency 5G ceramic dielectric filter conductive silver paste and a preparation method thereof. The formula mainly consists of conductive fillers with preset mass percentages, inorganic binders, organic binders, solvents, inorganic oxide additives, and dispersants. The conductive filler is spherical silver powder; the inorganic binder is glass powder; the organic binder is one or more combinations of ethyl cellulose, rosin, and acrylic resin; the solvent is aliphatic hydrocarbon, aliphatic hydrocarbon Derivatives, derivatives of alcohols containing more than 8 carbon atoms and acetate derivatives; inorganic oxide additives are one or more combinations of zinc oxide, bismuth oxide, aluminum oxide, yttrium oxide, and magnesium oxide; dispersants It is one or both of triamine citrate and polymethacrylic acid amine; the thixotropic agent is polyamide wax or hydrogenated castor oil. The invention solves the problems in the prior art that the silver paste relies on imports and the silver coating efficiency is low.

Description

technical field [0001] The invention relates to the technical field of ceramic dielectric filters, in particular to a highly efficient conductive silver paste for 5G ceramic dielectric filters and a preparation method thereof. Background technique [0002] The frequency of electromagnetic waves in the 5G era requires millimeter-level electromagnetic waves. In order to achieve millimeter wave signal coverage and high-density connection, the base station antenna size will also be reduced to the millimeter level, and micro base stations will be gradually realized. In this context of development, the filters used in base stations will also be gradually reduced in size to the millimeter level. Ceramic dielectric filters have become mainstream filters in the 5G era due to their advantages such as low loss, small size, and high Q value. Metallization is one of the key technologies of ceramic dielectric filters. At present, metallization processes include electroplating, dip coatin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/16H01B1/22H01B13/00
CPCH01B1/16H01B1/22H01B13/00
Inventor 王辉李岩陈将俊
Owner 大连海外华昇电子科技有限公司
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