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Oxidation-resistant conductive paste composition, conductive coating and preparation method thereof

A technology of conductive paste and conductive coating, which is applied in the direction of conductive materials, conductive paints and coatings dispersed in non-conductive inorganic materials, can solve the problems of easy oxidation and difficult sintering of nickel conductive paste, and achieve excellent anti-corrosion Oxidation performance, low process energy consumption, and simple application process

Active Publication Date: 2019-09-17
SHENZHEN ACAD OF AEROSPACE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, nickel conductive paste is easy to oxidize during the sintering process, and it is difficult to sinter in an air atmosphere. It is of great value and significance to develop a new type of nickel conductive paste with high oxidation resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] An anti-oxidation conductive paste composition, comprising: 75 parts of boron-nickel powder, boron-containing inorganic binder (boron oxide 7-25%, zinc oxide 10-14%, silicon oxide 3-5% by weight) , aluminum oxide 0.2-1.5%, lanthanum oxide 05-1.5%, lithium oxide 0.5-1.5%, and the rest are bismuth oxide system) 5 parts, organic carrier (ethyl cellulose) 1.5 parts, solvent (terpineol) 15 parts Parts, wherein the boron-nickel powder is a conductive metal powder coated with boron nickel, and the core is nickel. The surface of the boron-nickel powder contains NiB, the boron element content in the boron-nickel powder is 2.2%, and the boron element content in the boron-containing inorganic binder is 4%.

[0030] The above-mentioned conductive paste composition is coated on the surface of the alumina ceramic sheet to form a film, baked at 100 degrees for 40 minutes, and then sintered at 600 degrees for 40 minutes to obtain the conductive coating of the present invention.

Embodiment 2

[0032] An anti-oxidation conductive paste composition, comprising by weight: 95 parts of boron nickel powder, boron-containing inorganic binder (boron oxide 15%, zinc oxide 12%, silicon oxide 5%, aluminum oxide 1.5%, 0.5% of lanthanum oxide, 1% of lithium oxide, and the rest are bismuth oxide system) 15 parts, organic carrier (ethyl cellulose) 4.5 parts, solvent (terpineol) 30 parts, wherein the boron nickel powder is surface-coated Conductive metal powder coated with boron nickel, the core of which is nickel. The surface of boron nickel powder contains NiB and Ni 2 B (the mass ratio is 1:1), the content of boron element in the boron-nickel powder is 7%, and the content of boron element in the boron-containing inorganic binder is 10%.

[0033] The above-mentioned conductive paste composition is coated on the surface of the alumina ceramic sheet to form a film, baked at 150 degrees for 20 minutes, and then sintered at 800 degrees for 10 minutes to obtain the conductive coating...

Embodiment 3

[0035]An anti-oxidation conductive paste composition, comprising: 80 parts of boron-nickel powder, boron-containing inorganic binder (30% of boron oxide, 5% of zinc oxide, 0.2% of aluminum oxide, 0.5% of copper oxide, Sodium oxide 2%, the rest is the system of lead oxide) 7.5 parts, organic carrier (methyl cellulose) 3 parts, solvent (terpineol) 20 parts, wherein said boron-nickel powder is that the surface is coated with boron nickel A conductive metal powder whose core is nickel silver. The surface of boron nickel powder contains NiB and Ni 2 B (the mass ratio is 1:2), the boron element content in the boron-nickel powder is 5%, and the boron element content in the boron-containing inorganic binder is 7.5%.

[0036] The above-mentioned conductive paste composition is coated on the surface of the alumina ceramic sheet to form a film, baked at 120 degrees for 30 minutes, and then sintered at 700 degrees for 15 minutes to obtain the conductive coating of the present invention. ...

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Abstract

The invention belongs to the technical field of material preparation and in particular relates to an oxidation-resistant conductive paste composition, a conductive coating and a preparation method thereof. The conductive paste composition comprises, in parts by weight, 75 to 95 parts of boron nickel powder, 5 to 15 parts of boron-containing inorganic binder, 1 to 5 parts of organic vehicle, and 10 to 30 parts of solvent, wherein the boron nickel powder is a conductive metal powder having a surface coated with nickel boride; the boron content in the boron nickel powder is 2 to 8%; the boron content in the boron-containing inorganic binder is 2 to 20%. The conductive paste composition can be sintered under an air atmosphere, has excellent oxidation resistance, can be sintered at about 600 degrees, and has a simple application process and a low energy consumption process. The conductive coating prepared from the conductive paste composition has the characteristics of low cost, good electrical conductivity and good adhesion, and can be widely used in RFID antenna production.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to an anti-oxidation conductive paste composition, a conductive coating and a preparation method thereof. Background technique [0002] Conductive paste is widely used, and it can be widely used in solar cells, electronic labels, ceramic capacitors and other industries as the core material for electrode production. Currently, silver conductive pastes are widely used due to the good conductivity of silver. However, silver is a precious metal material, which is expensive, and the application cost of silver paste is very high. Base metallization is an inevitable trend in the future development of conductive paste. Metal nickel has a wide range of sources and is cheap, and the nickel conductive paste developed by using nickel conductive metal powder has broad application prospects. [0003] For example prior art CN101290824A provides a kind of preparation meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22C09D5/24C09D1/00
CPCC09D1/00C09D5/24H01B1/22
Inventor 刘海涛晏义伍邵鹏聪张力陈晓玻
Owner SHENZHEN ACAD OF AEROSPACE TECH
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