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Heat resistant antisticking no-lead black glaze for automobile glass and its prepn process

A technology for automotive glass and high temperature resistance, which is applied in the field of automotive glass tempering, can solve the problems of glass being difficult to mold, insufficient blackness, poor shielding power of conductive silver paste lines, etc., and achieves the effect of good shielding ability

Active Publication Date: 2007-12-19
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, the glazes commonly used in my country are the products of foreign companies such as Holland Johnson and FERRO. This product mainly has the following problems: when the glass is demoulded after sintering, the glaze is easy to stick to the mold, making it difficult for the glass to be molded, resulting in a rough surface of the black glaze. At the same time, after the black glaze and the silver paste are overprinted and fired, the black glaze has poor shielding power on the conductive silver paste lines, and the current black glaze contains lead and cadmium components.
In addition, other imported glazes also have defects such as insufficient blackness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for preparing high-temperature-resistant lead-free anti-sticking black glaze for automobile glass, the method comprising the following process steps:

[0030] (1) Preparation of carrier

[0031] First weigh 2% of the raw material weight of ethyl cellulose resin and 17% of the raw material weight of terpineol solvent and mix, then heat the mixture to 80°C and keep the temperature constant until the resin dissolves at a constant temperature until the viscosity is 5000-15000 centimeters Pole, and then filter the resin on a 300-mesh mesh cloth to obtain a carrier;

[0032] (2) Preparation of glaze slurry

[0033] The lead-free cadmium glass powder with a particle size of 5 μm and a softening point of 580 ° C is 60% of the raw material weight, the ultra-fine lead-free cadmium inorganic black ceramic pigment with a fineness of 1 μm is 20% of the raw material weight, and the anti-sticking agent talcum powder is used according to the raw material weight. 1% of the we...

Embodiment 2

[0037] A method for preparing high-temperature-resistant lead-free anti-sticking black glaze for automobile glass, the method comprising the following process steps:

[0038] (1) Preparation of carrier

[0039] First weigh 6% rosin by weight of the raw material, and mix them with 12% diethylene glycol monobutyl ether solvent by weight, then heat the mixture to 80°C and keep the temperature constant until the resin dissolves at a constant temperature until the viscosity is 5000-15000 centimeters Pole, and then filter the resin on a 300-mesh mesh cloth to obtain a carrier;

[0040] (2) Preparation of glaze slurry

[0041] The lead-free cadmium glass powder with a particle size of 8 μm and a softening point of 630°C is 54% of the raw material weight, the ultra-fine lead-free cadmium inorganic black ceramic pigment with a fineness of 0.5 μm is 26% of the raw material weight, and the anti-sticking agent zinc powder is Weigh 2% of the raw material weight, then fully mix the three ...

Embodiment 3

[0045] A method for preparing high-temperature-resistant lead-free anti-sticking black glaze for automobile glass, the method comprising the following process steps:

[0046] (1) Preparation of carrier

[0047] First take by weighing 5% alkyd resin of raw material weight, 18% castor oil solvent of raw material weight and mix, then this mixed solution is heated to 80 ℃ and constant temperature, until resin constant temperature dissolves to viscosity at 5000~15000 centipoise, then The resin is filtered on a 300-mesh mesh cloth to remove impurities to obtain a carrier;

[0048] (2) Preparation of glaze slurry

[0049] The lead-free cadmium glass powder with a particle size of 3 μm and a softening point of 700 ° C is 40% of the raw material weight, the ultra-fine lead-free cadmium inorganic black ceramic pigment with a fineness of 1.5 μm is 35% of the raw material weight, and the anti-sticking agent talcum powder is Weigh 2% of the raw material weight, then fully mix the three w...

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Abstract

The present invention relates to one kind of heat resistant antisticking no-lead black glaze for automobile glass and its preparation process. The black glaze is prepared with the material including glass powder 30-80 wt%, inorganic pigment 10-40 wt%, polymer resin 1-8 wt%, antisticking agent 1-2 wt%, and solvent 5-20 wt%. Its preparation process includes the technological steps of compounding carrier, compounding glaze slurry, preparing black glaze, etc. The black glaze is applied in pressure formation to produce toughened glass and sandwiched glass for automobile, and has excellent antisticking demolding effect, high capacity of shielding conductive silver slurry line, high blackness and environment friendship.

Description

technical field [0001] The invention relates to the technical field of high-temperature-resistant black glaze manufacture, in particular to high-temperature-resistant lead-free anti-adhesive black glaze for automobile glass tempering and hot bending treatment and a preparation method thereof. Background technique [0002] Automobile rear window glass is a kind of tempered glass, which is a secondary processing product of flat glass, also known as tempered tempered glass. It is to heat the ordinary flat glass in the heating furnace to close to the softening temperature of the glass (600 ° C), eliminate the internal stress through its own deformation, then move the glass out of the heating furnace, and then blow high-pressure cold air to the glass with a multi-head nozzle Tempered glass can be obtained by quickly and evenly cooling to room temperature. This kind of glass is in a stress state of internal tension and external compression. Once the local damage occurs, the stres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/00C03C8/14
Inventor 杨晓荣闻卫荣
Owner SHANGHAI BAOYIN ELECTRONICS MATERIALS CO LTD
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