Acid-resistant glass powder for end coating of silver paste and preparation method thereof

A technology of glass powder and silver paste, which is applied in the direction of weighing by removing certain components, can solve the problem of insufficient acid resistance of glass powder, and achieve the effect of excellent electrical properties, good acid resistance and dense coating of components

Pending Publication Date: 2021-03-26
CHINA ZHENHUA GRP YUNKE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the invention is to solve the problem of insufficient acid resistance of glass frit in the existing end-coated silver paste components

Method used

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  • Acid-resistant glass powder for end coating of silver paste and preparation method thereof
  • Acid-resistant glass powder for end coating of silver paste and preparation method thereof
  • Acid-resistant glass powder for end coating of silver paste and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A kind of acid-resistant glass powder, the preferred weight percentage is composed of:

[0044] SiO 2 20%~60%, Na 2 CO 3 10%~50%, K 2 CO 3 0.5%~8%, ZnO 15%~30%, B 2 o 3 1%~20%, CaO 1%~8%, Al 2 o 3 0.5% to 5%, TiO 2 1%~10%, ZrO 2 0.5%~8%, Na 2 CO 3 / K 2 CO 3 The molar ratio is 20~60, Na 2 CO 3 / B 2 o 3 The molar ratio of >1.

Embodiment 2

[0046] 1. The raw material composition is by weight percentage:

[0047] SiO 2 40%, Na 2 CO 3 30%, K 2 CO 3 1%, ZnO 20%, B 2 o 3 2%, CaO 3%, Al 2 o 3 1%, TiO 2 2%, ZrO 2 1%.

[0048] 2. Preparation method:

[0049] (1) Take each raw material according to the weight percentage of each component;

[0050] (2) Mix the weighed raw materials with a conventional powderer;

[0051] (3) Put the mixed mixture into a crucible, and then put it into a box-type high-temperature furnace with a furnace temperature of 1200 ° C ~ 1300 ° C, and keep it warm for 1 ~ 2 hours;

[0052] ⑷ Pour the molten glass into cold water and quench it;

[0053] (5) Put the glass particles into the ball mill for ball milling;

[0054] ⑹Sieve the ball-milled glass powder according to the conventional method;

[0055] ⑺ Use a synchronous thermal analyzer to detect the softening point of the glass powder, and confirm that the softening point of the glass powder is 550°C to 750°C;

[0056] ⑻ Detect...

Embodiment 3

[0062] 1. The raw material composition is by weight percentage:

[0063] SiO 2 40%, Na 2 CO 3 35%, K 2 CO 3 1%, ZnO 15%, B 2 o 3 2%, CaO 3%, Al 2 o 3 1%, TiO 2 2%, ZrO 2 1%.

[0064] 2. Preparation method:

[0065] (1) Take each raw material according to the weight percentage of each component;

[0066] (2) Mix the weighed raw materials with a conventional powderer;

[0067] (3) Put the mixed mixture into a crucible, and then put it into a box-type high-temperature furnace with a furnace temperature of 1200 ° C ~ 1300 ° C, and keep it warm for 1 ~ 2 hours;

[0068] ⑷ Pour the molten glass into cold water and quench it;

[0069] (5) Put the glass particles into the ball mill for ball milling;

[0070] ⑹Sieve the ball-milled glass powder according to the conventional method;

[0071] ⑺ Use a synchronous thermal analyzer to detect the softening point of the glass powder, and confirm that the softening point of the glass powder is 550°C to 750°C;

[0072] ⑻ Detect...

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Abstract

The invention discloses acid-resistant glass powder for end coating of silver paste and a preparation method of the acid-resistant glass powder. The acid-resistant glass powder comprises the followingcomponents in percentage by weight: 20-60% of SiO2, 10-50% of Na2CO3, 0.5-10% of K2CO3, 15-50% of ZnO, 1-30% of B2O3, 1-10% of CaO, 0.5-10% of Al2O3, 1-10% of TiO2 and 0.5-10% of ZrO2; wherein the molar ratio of the Na2CO3 to the K2CO3 is 20 to 60; wherein the molar ratio of the Na2CO3 to the B2O3 is greater than 1; and the acid etching weight loss ratio L of the acid-resistant glass powder is less than 0.3%. The problem of insufficient acid resistance of glass powder in an existing end-coated silver paste component is solved. The acid-resistant glass powder is good in acid resistance, stablein glass bonding phase chemical property, compact, good in soldering resistance, solderability and adhesive force, and excellent in aging resistance and component electrical property.

Description

technical field [0001] The invention belongs to the field of electronic components, specifically, to the field of chip components, and more specifically, to the field of terminal electrode materials of chip components. Background technique [0002] With the development of the electronics industry, multi-layer chip components characterized by small size, high reliability, excellent electrical properties, and the ability to achieve chip surface assembly are widely used in communications, computers and peripheral products, consumer electronics, and office automation. And automotive electronics and other fields have been widely used. [0003] Multilayer chip components are generally composed of substrates, metal film electrodes, and terminal electrodes, among which the terminal electrodes are the key to realizing chip surface assembly. Termination electrodes usually consist of silver electrodes and plating. The end-coated silver paste that constitutes the silver electrode is c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C12/00G01N5/04
CPCC03C12/00G01N5/04
Inventor 陈学通安家芳黄伟训罗廷福韩玉成
Owner CHINA ZHENHUA GRP YUNKE ELECTRONICS
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