Silver tin nano material conductive silver paste and application thereof in vacuum glass

A technology of nanomaterials and conductive silver paste, which is applied in the direction of conductive materials, circuits, electrical components, etc. dispersed in non-conductive inorganic materials, can solve the problems of high sintering temperature of conductive silver paste, uneven distribution of silver and tin, and achieve dispersion Good performance, lower melting temperature, and precise element ratio

Pending Publication Date: 2022-02-15
四川英诺维新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention intends to provide a silver-tin nanomaterial conductive silver paste to solve the problems of high sintering temperature and uneven distribution of silver-tin in the existing conductive silver paste

Method used

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  • Silver tin nano material conductive silver paste and application thereof in vacuum glass
  • Silver tin nano material conductive silver paste and application thereof in vacuum glass
  • Silver tin nano material conductive silver paste and application thereof in vacuum glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A silver-tin nanomaterial conductive silver paste, including silver-tin nano-alloy, glass powder, dispersant and thickener, silver-tin nano-alloy includes silver source and tin source, silver source is made into nano-silver balls first, and then tin The source is coated on the nano-silver ball. Specifically adopt the following method to prepare:

[0040] Step 1: Add 0.2 mol of silver nitrate to 4L of oleylamine solution, raise the temperature to 90°C, and stir for 10 minutes to fully dissolve the silver nitrate to obtain a silver precursor;

[0041] Step 2, transfer the silver precursor to the flask, feed argon gas to exhaust the air in the flask and seal the flask, then raise the temperature to 180°C and keep it for 60 minutes to obtain the nano-silver seed dispersion;

[0042] Step 3, dissolving 0.023mol of tin tetrachloride in 2.5L of squalane, slowly adding it to the nano-silver seed dispersion in step 2, and raising the temperature to 300°C, keeping it for 10 minu...

Embodiment 2

[0049] A conductive silver paste of silver-tin nanomaterials, comprising silver-tin nano-alloy, glass powder, dispersant and thickener, prepared by the following method:

[0050] Step 1: Add 0.2 mol of silver nitrate to 4L of oleylamine solution, raise the temperature to 60°C, and stir for 30 minutes to fully dissolve the silver nitrate to obtain a silver precursor;

[0051]Step 2, transfer the silver precursor to the flask, feed argon gas to exhaust the air in the flask and seal the flask, then raise the temperature to 200°C and keep it for 30 minutes to obtain the nano-silver seed dispersion;

[0052] Step 3, dissolving 0.023mol of tin tetrachloride in 2.5L of squalane, slowly adding to the nano-silver seed dispersion in step 2, and raising the temperature to 250°C, keeping it for 30 minutes to obtain a silver-tin nano-alloy the dispersion liquid;

[0053] Step 4, after the dispersion liquid of the silver-tin nano-alloy is naturally cooled to room temperature, absolute etha...

Embodiment 3

[0057] A conductive silver paste of silver-tin nanomaterials, comprising silver-tin nano-alloy, glass powder, dispersant and thickener, prepared by the following method:

[0058] Step 1: Add 0.2 mol of silver nitrate to 4L of oleylamine solution, raise the temperature to 75°C, and stir for 20 minutes to fully dissolve the silver nitrate to obtain a silver precursor;

[0059] Step 2, transfer the silver precursor to the flask, feed argon gas to exhaust the air in the flask and seal the flask, then raise the temperature to 150°C and keep it for 80 minutes to obtain the nano-silver seed dispersion;

[0060] Step 3, dissolve 0.023mol of tin tetrachloride in 2.5L of squalane, slowly add to the nano silver seed dispersion in step 2, and heat up to 300°C, keep for 20 minutes to obtain silver tin nano alloy the dispersion liquid;

[0061] Step 4, after the dispersion liquid of the silver-tin nano-alloy is naturally cooled to room temperature, absolute ethanol is added to precipitate ...

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Abstract

The invention relates to the technical field of conductive silver paste, in particular to silver tin nano material conductive silver paste, which comprises silver tin nano alloy, glass powder, a dispersing agent and a thickening agent, wherein the silver tin nano alloy comprises a silver source and a tin source, the silver source is made into nano silver balls, and the tin source wraps the nano silver balls. According to the invention, a silver source is synthesized into nano silver balls, then the nano silver balls are used as seeds, a tin source is coated on the nano silver balls, and the synthesized silver tin nano alloy is small and uniform in particle size; the silver tin nano alloy is good in dispersity after being added with a dispersing agent, and compared with a method of directly mixing silver powder and tin powder, elements in the conductive silver paste are uniformly distributed, and the element ratio is accurate; and compared with micron-sized silver powder and tin powder, the melting temperature of the silver tin nano alloy is greatly reduced, so that the sintering temperature of the conductive silver paste is reduced, and the sintering time of the conductive silver paste is shortened.

Description

technical field [0001] The invention relates to the technical field of conductive silver paste, in particular to a silver-tin nano material conductive silver paste and its application on vacuum glass. Background technique [0002] Vacuum glass is a new generation of energy-saving glass. Vacuum glass is generally a sandwich structure composed of a piece of Low-e glass, a piece of white glass and a vacuum layer. Compared with the current insulating glass, it has higher heat insulation and sound insulation effects, and can realize More efficient energy saving and emission reduction. [0003] In the edge sealing process of vacuum glass, the metal edge sealing process is relatively mature, that is, the two pieces of glass are combined with conductive silver paste and metal alloy materials. After the conductive silver paste is sintered on the glass, it is generally connected with a tin-containing alloy material. The silver paste layer and the alloy form a solid structure by formi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/02H01B1/16H01B13/00C03C27/08
CPCH01B1/02H01B1/16H01B13/00C03C27/08
Inventor 张欣刘勇江姜宏蔡邦辉龚友来王国焦鲜华
Owner 四川英诺维新材料科技有限公司
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