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Spraying type silver paste for 5G ceramic dielectric filter and preparation method thereof

A ceramic dielectric and filter technology, which is applied in the field of spray-coated silver paste for 5G ceramic dielectric filters and its preparation, can solve problems such as blistering, low quality factor, and weak adhesion of silver film ceramics, and achieve Strong welding force, avoid desoldering effect

Active Publication Date: 2020-10-30
西安宏星电子浆料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the principle of traditional paste, some electronic paste manufacturers use micron-sized silver powder as conductive particles, ethyl cellulose resin as organic carrier, and glass powder as solder. The quality factor of the prepared paste is not high, Defects such as weak adhesion of the silver film to the porcelain body, poor weldability of the silver film electrode, uneven film thickness, peeling and blistering, etc.

Method used

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  • Spraying type silver paste for 5G ceramic dielectric filter and preparation method thereof
  • Spraying type silver paste for 5G ceramic dielectric filter and preparation method thereof
  • Spraying type silver paste for 5G ceramic dielectric filter and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~5

[0024] A spray-on silver paste for 5G ceramic dielectric filter, the silver paste includes the following components in parts by mass: 10 parts of organic binder, 73 parts of silver powder, 2 parts of soldering agent, 1 part of anti-settling agent, and 14 parts of volatile agent. Wherein the organic binder is composed of 20wt% organic resin and 80wt% organic solvent.

[0025] Prepare spray-coated silver paste for 5G ceramic dielectric filter according to the following method

[0026] (1) Preparation of organic binder: based on the total weight of the organic binder as 100, including 20wt% organic resin and 80wt% organic solvent, add the organic resin to the organic solvent and place in a constant temperature water tank at 75°C to 95°C Keep the temperature at medium temperature for 3 hours until the dissolution is complete, and then filter through a 250-325 mesh screen to obtain an organic adhesive.

[0027] (2) Preparation of solder: Mix the metal oxides in the solder, melt at...

Embodiment 6

[0056] A preparation method for spraying silver paste for a 5G ceramic dielectric filter, the method comprising the following steps:

[0057] (1) Material preparation: Prepare materials by weight, 8 parts of organic binder, 82 parts of silver powder, 1.5 parts of soldering agent, 0.5 parts of anti-settling agent, and 12 parts of volatile agent;

[0058] The organic binder includes 8wt% organic resin and 92wt% organic solvent. Among them, the organic resin is a mixed resin composed of hydroxyethyl cellulose, epoxy acrylic resin and dammar resin with a mass ratio of 20:48:16; the organic solvent is butyl carbitol acetate with a mass ratio of 28:42:22 , a mixed organic solvent composed of terpineol and PMA;

[0059] The solder includes the following components in parts by weight: 20 parts of silicon oxide, 5 parts of aluminum oxide, 10 parts of barium oxide, 10 parts of boron oxide, 5 parts of bismuth oxide, 1 part of lithium oxide, 0 parts of zinc oxide, calcium oxide 0 parts,...

Embodiment 7

[0065] A preparation method for spraying silver paste for a 5G ceramic dielectric filter, the method comprising the following steps:

[0066] (1) Material preparation: Prepare materials by weight, 15 parts of organic binder, 68 parts of silver powder, 3.5 parts of soldering agent, 2.0 parts of anti-settling agent, and 15 parts of volatile agent;

[0067]The organic binder includes 30wt% organic resin and 70wt% organic solvent. Among them, the organic resin is a mixed resin composed of hydroxyethyl cellulose, epoxy acrylic resin and dammar resin with a mass ratio of 32:63:24; the organic solvent is butyl carbitol acetate with a mass ratio of 32:48:28 , a mixed organic solvent composed of terpineol and PMA;

[0068] The solder includes the following components by weight: 40 parts of silicon oxide, 15 parts of aluminum oxide, 25 parts of barium oxide, 35 parts of boron oxide, 35 parts of bismuth oxide, 4 parts of lithium oxide, 20 parts of zinc oxide, calcium oxide 15 parts, ma...

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Abstract

The invention relates to spraying type silver paste for a 5G ceramic dielectric filter and a preparation method thereof. The silver paste comprises the following components in parts by mass: 8-15 parts of an organic adhesive, 68-82 parts of silver powder, 1.5-3.5 parts of a welding agent, 0.5-2.0 parts of an anti-settling agent and 12-15 parts of a volatile agent. The silver paste is prepared by adopting the following method: (1) preparing an organic adhesive; (2) preparing a welding agent; and (3) preparing the silver paste: uniformly mixing silver powder, an organic adhesive, a welding agent, an anti-settling agent and a volatile agent according to the mass percent and parts, rolling, dispersing, and adjusting the viscosity to obtain the spraying type silver paste for the 5G ceramic dielectric filter. Compared with the prior art, the spraying type silver paste has the advantages that the film thickness is uniform, the silver film is not prone to cracking and bubbling, the Q value ishigh, insertion loss is small, welding reliability is good, and the tensile strength value is high.

Description

technical field [0001] The invention relates to the technical field of electronic materials, in particular to a spray-coated silver paste for a 5G ceramic dielectric filter and a preparation method thereof. Background technique [0002] Dielectric resonators with high quality factor, high dielectric constant and low frequency temperature coefficient are key devices for making various microwave devices (such as duplexers, dielectric filters, etc.), and are widely used in mobile communications and satellite communications . Dielectric resonators have the function of frequency selection. In communication base stations, dielectric resonators can be used to form dielectric filters to perform filtering and selection of specific frequency signals. With the development of communication technology, people put forward higher requirements on the performance of these devices. Ceramic dielectric filters are small in size and simple in molding process, and have been popular in 5G commun...

Claims

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Application Information

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IPC IPC(8): H01B1/22H01B13/00H01P1/20
CPCH01B1/22H01B13/00H01P1/2002
Inventor 张莉莉王大林党丽萍张亚鹏王要东王顺顺曾艳艳刘姚
Owner 西安宏星电子浆料科技股份有限公司
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