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Anti-oxidation silver paste for passenger car front windshield and preparation method thereof

A front glass, silver oxide technology, applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, electrical components, etc. The quality of glass screen products and the poor oxidation resistance of silver paste can increase the oxidation resistance, improve the oxidation resistance and meet the conductivity.

Active Publication Date: 2020-07-31
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 passenger car 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 the bus front windshield products can not be too long, affecting the quality of the bus front windshield products
The difference between this application and this patent is mainly in the selection of inorganic additives and the selection and matching of silver powder types, which lead to some deficiencies in the anti-oxidation performance of this patent

Method used

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  • Anti-oxidation silver paste for passenger car front windshield and preparation method thereof
  • Anti-oxidation silver paste for passenger car front windshield and preparation method thereof
  • Anti-oxidation silver paste for passenger car front windshield and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Prepare 100g of raw materials, prepare raw materials according to the following components and quality:

[0035]

[0036]

[0037] 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;

[0038] The composition and percentage of glass powder-L used are: Bi 2 o 3 65.B 2 o 3 18. ZnO 9. SiO 2 4. Al 2 o 3 2. Na 2 O 1, Fe 2 o 3 0.5, ZrO 20.5;

[0039] The organic additives used are 0.25g dibutyl phthalate and 0.25g silane coupling agent KH550.

[0040] The titanium dioxide used was of analytical grade. The organic solvent is mixed with terpineol and diethylene glycol butyl ether at a volume ratio of 1:4.

[0041] (2) Preparation of carrier: Weigh ethyl cellulose and organic solvent, then heat it up to 80°C and keep the temperature constant. After the ethyl cellulose is completely dissolved, filter and remove impurities ...

Embodiment 2

[0045] (1) Prepare 100g of raw materials, prepare raw materials according to the following components and quality:

[0046]

[0047] 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;

[0048] The composition and percentage of glass powder-L used are: Bi 2 o 3 70.B 2 o 3 16. ZnO 8. SiO 2 3.5, Al 2 o 3 1.5, Na 2 O 1.0, Fe 2 o 3 0. ZrO 2 0;

[0049] The organic additives used were 0.5 g dioctyl phthalate and 0.5 g silicone resin.

[0050] The molybdenum trioxide used was of analytical grade.

[0051] (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, the carrier is obtained;

[0052] (3) Preparation of silver paste: Weigh spherical silv...

Embodiment 3

[0055] (1) Prepare 100g of raw materials, prepare raw materials according to the following components and quality:

[0056]

[0057] 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;

[0058] The composition and percentage of glass powder-L used are: Bi 2 o 3 70.B 2 o 3 16. ZnO 8. SiO 2 3.5, Al 2 o 3 1.5, Na 2 O 1.0, Fe 2 o 3 0. ZrO 2 0;

[0059] The organic additives used are 0.6g tributyl citrate, 0.2g hydrogenated castor oil and 0.20g silane coupling agent KH570.

[0060] The tricobalt tetroxide and vanadium pentoxide used are of analytical grade.

[0061] (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 hydroxyethyl cellulose is completely dissolved , filter and remove impurities on a me...

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Abstract

The invention relates to an anti-oxidation silver paste for car windshield glass and a preparation method thereof. A raw material adopts following components and weight percentage contents: 60-80% ofmetal silver powder; 3-6% of glass powder; 2-8% of polymer resin; 0.5-1.5% of organic additive; 0.5-4.5% of inorganic additive; and 10-30% of organic solvent. The anti-oxidation silver paste for the car windshield glass is obtained through steps of material preparation, preparation of a carrier, preparation of the silver paste, and production of the silver paste. Compared with the prior art, according to the prepared product, the requirement of technical indexes including conductivity, adhesion, the tin surface color and the matching property with black glaze can be satisfied, and the productalso has the advantage of anti-oxidation performance.

Description

technical field [0001] The invention relates to a silver paste for a front windshield of a passenger car and a preparation method thereof, in particular to an anti-oxidation silver paste for a front windshield of a passenger car 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 front windshield of a passenger car is generally equipped with defogging and frost heating wires. The heating wire generally prints the silver paste on the surface of the bus glass and black glaze by screen printing technology, and heats it in a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/16H01B1/22H01B13/00
Inventor 朱庆明江海涵何利娜王德龙
Owner SHANGHAI BAOYIN ELECTRONICS MATERIALS CO LTD
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