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Low-temperature polymer conductive silver paste with low silver content, and preparation method thereof

A technology of conductive silver paste and polymer, which is applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, circuits, etc., can solve the problems of weather resistance and stability gap, and achieve soft matt feeling, The effect of good printing reproducibility and low silver content

Active Publication Date: 2021-04-30
WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, domestic silver paste manufacturers such as Guiyan Platinum, Shanghai Baoyin, Shanghai Jiuyin, Zhongke Natong, Betley and other companies also have high-quality low-temperature polymer conductive silver paste products, but they only reduce the silver content while ensuring There is a big gap between the technical level of excellent electrical conductivity, weather resistance and stability and foreign countries

Method used

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  • Low-temperature polymer conductive silver paste with low silver content, and preparation method thereof
  • Low-temperature polymer conductive silver paste with low silver content, and preparation method thereof
  • Low-temperature polymer conductive silver paste with low silver content, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The conductive silver paste of the present embodiment is composed of the following mass percentage substances: flake silver powder SF-1#43%, VAGH-004 organic vehicle 43%, VMCH organic vehicle 8%, organic bentonite 0.8%, polyethylene micronized wax 0.5%, YL-2 glass resin 0.5%, 9100 varnish 0.7%, dibasic ester (DBE) 3.5%.

[0035] The D50 value of flake silver powder SF-1# is 3.49 μm, the VAGH-004 organic vehicle is 12% Dow VAGH-004 resin and fully stirred and dispersed in 88% DBE, and the VMCH organic vehicle is 20% Dow VMCH resin is fully stirred and dispersed in 80% DBE.

[0036] The preparation method of the above-mentioned conductive silver paste includes the following steps.

[0037] Step 1, premixing of the slurry: first, fully dissolve and mix VAGH-004 and VMCH organic vehicle, organic bentonite, polyethylene micronized wax, YL-2 glass resin, 9100 varnish, and DBE in a container using a high-speed disperser and Disperse evenly, then pour in flake silver powder S...

Embodiment 2

[0045] The conductive silver paste of the present embodiment is composed of the following mass percentage substances: flake silver powder SF-2#43%, VAGH-004 organic vehicle 43%, VMCH organic vehicle 8%, organic bentonite 0.8%, polyethylene micronized wax 0.5%, YL-2 glass resin 0.5%, 9100 varnish 0.7%, dibasic ester (DBE) 3.5%.

[0046] The D50 value of flaky silver powder SF-2# is 4.16 μm, the VAGH-004 organic vehicle is 12% Dow VAGH-004 resin and fully stirred and dispersed in 88% DBE, and the VMCH organic vehicle is 20% Dow VMCH resin is fully stirred and dispersed in 80% DBE.

[0047] The preparation method of the above-mentioned conductive silver paste includes the following steps.

[0048] Step 1, premixing of the slurry: first, fully dissolve and mix VAGH-004 and VMCH organic vehicle, organic bentonite, polyethylene micronized wax, YL-2 glass resin, 9100 varnish, and DBE in a container using a high-speed disperser and Disperse evenly, and then pour in flake silver powd...

Embodiment 3

[0052] The conductive silver paste of the present embodiment is composed of the following mass percentage substances: flake silver powder SF-3#43%, VAGH-004 organic vehicle 43%, VMCH organic vehicle 8%, organic bentonite 0.8%, polyethylene micronized wax 0.5%, YL-2 glass resin 0.5%, 9100 varnish 0.7%, dibasic ester (DBE) 3.5%.

[0053] The D50 value of flaky silver powder SF-3# is 2.97 μm, the VAGH-004 organic vehicle is 12% Dow VAGH-004 resin and fully stirred and dispersed in 88% DBE, and the VMCH organic vehicle is 20% Dow VMCH resin is fully stirred and dispersed in 80% DBE.

[0054] The preparation method of the above-mentioned conductive silver paste includes the following steps.

[0055] Step 1, premixing of the slurry: first, fully dissolve and mix VAGH-004 and VMCH organic vehicle, organic bentonite, polyethylene micronized wax, YL-2 glass resin, 9100 varnish, and DBE in a container using a high-speed disperser and Disperse evenly, and then pour in flake silver powd...

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Abstract

The invention discloses low-temperature polymer conductive silver paste with low silver content. The conductive silver paste comprises 37-43% of flake silver powder, 0-6% of flake nickel powder, 43% of hydroxyl modified ternary vinyl chloride-vinyl acetate resin carrier, 8% of carboxyl modified ternary vinyl chloride-vinyl acetate resin carrier, 0.8% of organic bentonite, 0.5% of polyethylene micronized wax, 0.5% of YL-2 glass resin, 0.7% of 9100 gloss oil and 3.5% of dibasic ester (DBE), a conductive phase is composed of the flake silver powder and the flake nickel powder, the flake silver powder is one or a mixture of four kinds, and the flake nickel powder is one or a mixture of two kinds. The invention further discloses a preparation method of theconductive silver paste. Theconductive silver paste is obtained by mixing different types and contents of the flake silver powder, the flake nickel powder and ternary vinyl chloride-vinyl acetate resin, and carrying out optimized rolling on the obtained mixture, assistants, an organic solvent and the like. The silver paste has the remarkable characteristics of small film sheet resistance value, low silver content, short supply period, good printing property and the like, and has relatively strong market competitiveness; and a scientific basis is provided for research and development of the low-temperature polymer conductive silver paste industry.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a low-silver content low-temperature polymer conductive silver paste and a preparation method thereof. Background technique [0002] Low-temperature polymer conductive silver paste is a key functional material in the electronic industry information field. The conductive film layer prepared by screen printing process is widely used in membrane switches, keyboards, touch screens and radio frequency identification labels. Electronic components are developing towards miniaturization and functional integration, making the conductive silver paste have excellent conductivity, printability, water resistance, hardness, and flexibility, and at the same time need to have lower production costs. The development and screening of the types and proportions of the ingredients are particularly critical. The conductive metal phase is usually composed of metals such as Au, Ag, Cu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22H01B13/00
CPCH01B1/22H01B13/00
Inventor 游立张奕张杜娟常意川丁刚强
Owner WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
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