Weldable conductive silver paste and preparation method and use thereof

Abstract

The invention discloses weldable conductive silver paste and a preparation method and use thereof. The weldable conductive silver paste is prepared from the following materials in parts by weight: 40-60 parts of super-fine silver powder, 5-10 parts of flake-shaped silver powder 2-5 parts of calcium oxide, 3-8 parts of titanium oxide, 1-5 parts of aluminium oxide, 5-10 parts of silicon oxide, 2-4 parts of zirconium oxide, 1.3 parts of barium oxide, 0.5-2 parts of boric acid, 10-20 parts of terpilenol, 20-40 parts of butyl carbitol, 10-20 parts of tributyl citrate and 1-5 parts of ethyl cellulose. The silver paste electrode obtained in the invention is mainly used for the power connecting lead electrode of an electric heating film, such as a thick film, a printing film or a nanometer electric heating film and is higher in conductivity; and the printing electrode can be smaller, and can be directly welded with an electric wire lead with firmer wire connection.

Description

technical field [0001] The invention relates to the field of conductive silver paste, relates to a solderable conductive silver paste, and also relates to a preparation method and application thereof. Background technique [0002] In the prior art, the traditional conductive silver paste uses silver oxide particles as the main component, and is used in high-temperature electrothermal films or nano-electrothermal films. The printed electrode strips can be electrode rings, and soldering cannot be used to connect electrodes The lead wire and the electrode strip are welded and connected, and only the press-fit connection method can be used. Therefore, considering that some special environments cannot be used or it is inconvenient to use the press-fit connection method, the welding method must be used to connect more firmly. Contents of the invention [0003] The object of the present invention is, aim at the above-mentioned defect of prior art, provide a kind of solderable co...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the traditional conductive silver paste uses silver oxide particles as the main component, and it is used in high-temperature electric heating film or nano electric heating film. The lead wire and the electrode strip are welded and connected, and only the press-fit connection method can be used