Environment-friendly silver paste for automobile glass and preparation method thereof

An automotive glass, environmentally friendly technology, applied in the direction of pigment paste, etc., can solve the problems of limited use and large pollution

Inactive Publication Date: 2013-03-20
IRICO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The environmental standards of the electronic paste industry follow the European Union's RoHS directive (excluding Pb, Cd, Hg, Cr(VI), polybrominated biphenyl PBB, polybrominated diphenyl ether PBDE) and the European Union's RoHS directive on phthalates 2005 / 84 / EC , the existing lead-containing silver paste for automotive glass is increasingly polluting the environment, and its use will be gradually restricted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Step A: Preparation of environmental glass adhesive.

[0020] Weighing according to the raw material composition and mass percentage of the environmentally friendly glass adhesive:

[0021] B 2 o 3 45%; ZnO 20%; B 2 o 3 25%; 2 o 3 4%; SiO 2 1%; CaO 3%; TiO 2 2%;

[0022] Mix the above-mentioned raw materials that have been weighed evenly, heat them in a high-temperature furnace, and heat them at 1200°C for 30 minutes. After quenching the melted glass powder particles with deionized water, ball mill them to 0.5-2 microns, and sieve them through a 200-mesh sieve for later use. , The glass powder obtained in this way does not contain harmful substances such as Pb, Cd, Hg, Cr(VI).

[0023] Step B: Preparation of carrier.

[0024] Add 10% by weight of ethyl cellulose resin to 90% organic solvent, dissolve completely in a constant temperature water tank at a temperature of 75°C, and filter through a 200-mesh filter to obtain an organic vehicle;

[0025] The organic...

Embodiment 2

[0029] Step A: Preparation of the environmentally friendly glass binder.

[0030] Weighing according to the raw material composition and mass percentage of the environmentally friendly glass binder:

[0031] Bi 2 o 3 55%; B 2 o 3 22%; SiO 2 1%;TiO 2 0.5%; NiO 1%; NiO 2 0.5%; ZnO 20%.

[0032] Mix the above-mentioned raw materials that have been weighed evenly, heat them in a high-temperature furnace, and heat them at 900°C for 60 minutes. After quenching the melted glass powder particles with deionized water, ball mill them to 0.5-2 microns, and sieve them through a 400-mesh sieve for later use. The glass powder obtained in this way does not contain harmful substances such as Pb, Cd, Hg, Cr(VI).

[0033] Step B: Preparation of carrier.

[0034] Add 30% ethyl cellulose resin to 70% organic solvent by weight percentage, dissolve completely in a constant temperature water tank at a temperature of 100°C, and filter through a 200-mesh filter to obtain an organic vehicle; ...

Embodiment 3

[0039] Step A: Preparation of the environmentally friendly glass binder.

[0040] Weighing according to the raw material composition and mass percentage of the environmentally friendly glass binder:

[0041] Bi 2 o 3 50%; B 2 o 3 25%; 2 o 3 0.5%; SiO 2 1%; CaO 0.5%; TiO 2 1%; NiO 2 2%; ZnO 20%.

[0042] Mix the above-mentioned raw materials that have been weighed evenly, heat them in a high-temperature furnace, and heat them at 1000°C for 50 minutes. After quenching the melted glass powder particles with deionized water, ball mill them to 0.5-2 microns, and sieve them through a 300-mesh sieve for later use. The glass powder obtained in this way does not contain harmful substances such as Pb, Cd, Hg, Cr(VI).

[0043] Step B: Preparation of carrier.

[0044]Add 20% of ethyl cellulose resin to 80% organic solvent by weight percentage, dissolve completely in a constant temperature water tank at a temperature of 95°C, and filter through a 200-mesh filter to obtain an org...

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PUM

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Abstract

The invention relates to an environment-friendly silver paste for automobile glass and a preparation method thereof. The silver paste is characterized by comprising, by weight, 20 to 40% of spherical silver powder with an average particle size of 0.2 to 2 mu m, 3 to 15% of a carrier, 2 to 15% of a bonding material, 1 to 5% of an inorganic metal oxide, 2 to 15% of a solvent and 0.5 to 2% of a dispersant, with the balancing being flaky silver powder with an average particle size of 3 to 10 mu m. According to the invention, environment-friendly glass powder is used as a binder for the silver paste used for automobile glass, and an environment-friendly organic reagent is used as a solvent and a diluent for the silver paste; and the prepared paste does not contain six substances forbidden in RoHS instructions of European Union and accords with the RoHS instruction 2005/84/EC about phthalate of European Union.

Description

technical field [0001] The invention relates to an environment-friendly silver paste for automobile glass and a preparation method thereof. Background technique [0002] The series of pastes for automotive glass can be divided into three categories: inks for laminated front glass, inks for side and rear tempered glass, and defrosting silver pastes for rear tempered glass. Generally, the first two types are collectively referred to as inks for automobile glass, which are applied to the periphery of automobile glass to play the role of decoration and anti-ultraviolet when the car is used; defrosting silver paste is a method of electric heating to remove fog and condensation on the glass. Frost. Due to the vigorous development of my country's automobile industry in recent years, the output of automobiles has increased year by year, and the demand for silver paste and ink for automobile glass has also increased sharply. [0003] The environmental standards of the electronic pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D17/00
Inventor 李驰
Owner IRICO
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