Grey conductive silver paste for automobile glass and preparation method thereof

A technology of conductive silver paste and automotive glass, applied in cable/conductor manufacturing, conductive materials dispersed in non-conductive inorganic materials, circuits, etc., can solve the problem of lack of anti-oxidation performance, affecting the quality of automotive glass products, and storage of automotive glass products The time can't be too long and so on

Active Publication Date: 2021-10-22
SHANGHAI BAOYIN ELECTRONICS MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the silver pastes used in domestic auto glass factories are domestic silver pastes, and a small part of them are foreign products such as DuPont, Fluor and Johnson Matthey. Discoloration, resulting in the storage time of auto glass products can not be too long, affecting the quality of auto glass products
The selection of inorganic additives and the selection and matching of silver powder types lead to some deficiencies in the anti-oxidation performance of this patent

Method used

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  • Grey conductive silver paste for automobile glass and preparation method thereof
  • Grey conductive silver paste for automobile glass and preparation method thereof
  • Grey conductive silver paste for automobile glass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Prepare 100g of raw materials, prepare raw materials according to the following components and quality:

[0033]

[0034] The particle size of the spherical silver powder used is 2.3 μm, and the tap density is 3.2 g / ml; the particle size of the flake silver powder is 6 μm, and the tap density is 2.4 g / ml;

[0035] The particle size of the spherical nickel powder used is 2.5 μm, and the tap density is 2.8 g / ml;

[0036] The composition and percentage of glass powder-L used are: 65% Bi 2 o 3 , 18%B 2 o 3 , 9% ZnO, 4% SiO 2 , 2%Al 2 o 3 , 1%Na 2 O, 0.5% Fe 2 o 3 , 0.5% ZrO 2 ;

[0037] The organic additives used are 0.25g dibutyl phthalate and 0.25g silane coupling agent KH550.

[0038] The titanium dioxide used was of analytical grade.

[0039] (2) Preparation of carrier: Weigh ethyl cellulose and diethylene glycol butyl ether, then heat it up to 80°C and keep the temperature constant. After the ethyl cellulose is completely dissolved, filter it on a mes...

Embodiment 2

[0043] (1) Prepare 100g of raw materials, prepare raw materials according to the following components and quality:

[0044]

[0045] The particle size of the spherical silver powder used is 2.8 μm, and the tap density is 3.8 g / ml; the particle size of the flake silver powder is 6 μm, and the tap density is 2.4 g / ml;

[0046] The particle size of the spherical nickel powder used is 2.5 μm, and the tap density is 2.8 g / ml;

[0047] The composition and percentage of glass powder-L used are: 70% Bi 2 o 3 , 16%B 2 o 3 , 8% ZnO, 3.5% SiO 2 , 1.5%Al 2 o 3 , 1.0%Na 2 O;

[0048] The organic additives used were 0.5 g dioctyl phthalate and 0.5 g silicone resin.

[0049] The molybdenum trioxide used was of analytical grade.

[0050] (2) Preparation of carrier: Weigh nitrocellulose and terpineol, then heat it up to 80°C and keep the temperature constant. After the nitrocellulose is completely dissolved, filter and remove impurities on a mesh cloth of 300-400 mesh. That is, t...

Embodiment 3

[0054] (1) Prepare 100g of raw materials, prepare raw materials according to the following components and quality:

[0055]

[0056] The particle size of the spherical silver powder used is 1.8 μm, and the tap density is 2.6 g / ml; the particle size of the flake silver powder is 7.5 μm, and the tap density is 1.9 g / ml;

[0057] The particle size of the spherical nickel powder used is 2.5 μm, and the tap density is 2.8 g / ml;

[0058] The composition and percentage of glass powder-L used are: 70% Bi 2 o 3 , 16%B 2 o 3 , 8% ZnO, 3.5% SiO 2 , 1.5%Al 2 o 3 , 1.0%Na 2 O;

[0059] The organic additives used are 0.6g tributyl citrate, 0.2g hydrogenated castor oil and 0.20g silane coupling agent KH570. The tricobalt tetroxide and vanadium pentoxide used are of analytical grade.

[0060] (2) Preparation of the carrier: weigh ethyl hydroxyethyl cellulose, terpineol and butyl carbitol acetate, then heat them up to 80°C and keep the temperature constant until the ethyl hydroxye...

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Abstract

The invention relates to gray conductive silver paste for automobile glass and a preparation method of the gray conductive silver paste. The raw materials of the conductive silver paste comprise the following components in parts by weight: 50-70 parts of metal silver powder, 10 parts of metal nickel powder, 3-6 parts of glass powder, 2-8 parts of macromolecular resin, 0.5-1.5 parts of an organic additive, 0.5-4.5 parts of an inorganic additive and 10-30 parts of an organic solvent. The silver paste is obtained through the following steps: (1) carrier preparation; (2) preparation of silver paste; (3) production of silver paste production. Compared with the prior art, the invention not only can meet the technical index requirements of conductivity, adhesive force, tin surface color, matching with black glaze and the like of the front windshield of the passenger car, but also has oxidation resistance.

Description

technical field [0001] The invention relates to the technical field of conductive silver paste, in particular to a gray conductive silver paste for automobile glass and a preparation method thereof. Background technique [0002] With the continuous development of my country's economy, the automobile industry has also developed rapidly and vigorously, and the output of passenger cars has also increased year by year. At the same time, the demand for silver paste and black glaze for the front windshield of passenger cars is also increasing, and the quality requirements are also getting higher and higher. [0003] In order to quickly eliminate fog and frost, the side of the rear glass of the car is generally equipped with defogging and frost heating wires. The heating wire generally prints the silver paste on the surface of the automobile glass and black glaze by screen printing technology, and heats it in a bending furnace at a high temperature of 600°C for 30-45min, so that t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/16H01B1/22H01B13/00
CPCH01B1/16H01B1/22H01B13/00Y02E10/50
Inventor 朱庆明江海涵
Owner SHANGHAI BAOYIN ELECTRONICS MATERIALS CO LTD
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