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Preparation method of one-step sintered glass-ceramic composite board

A technology of glass-ceramic and glass-ceramic frit, which is applied in the field of architectural ceramics, can solve the problems of increased moisture content of adobe, affecting the strength of the green body, and being easily sucked away, so as to achieve the effect of improving the flatness and increasing the yield

Active Publication Date: 2015-01-07
重庆高新技术产业研究院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in production, the bricks with good cloth are sent to the kiln for preheating in a low negative pressure environment, and the fine particles (especially less than 100 mesh) are easily sucked away due to their light weight, and the glue covering the surface The fixative cannot play a good bonding and fixing effect on the glass-ceramic frit particles
In addition, if the use of glue fixative is applied to the production of once-fired glass-ceramic composite panels, the solvent in the glue will penetrate into the glass-ceramic frit layer and continue to penetrate into the powder layer of the green body, making the original dry powder The material layer absorbs the moisture in the glue, which affects the strength of the green body. When it is transported to the kiln, it is prone to fracture and other phenomena, which increases the moisture content of the brick, and is prone to cracks. The yield and qualified yield are greatly reduced.

Method used

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  • Preparation method of one-step sintered glass-ceramic composite board
  • Preparation method of one-step sintered glass-ceramic composite board
  • Preparation method of one-step sintered glass-ceramic composite board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0028] A method for preparing a once-fired transparent glass-ceramic composite board, comprising the following steps:

[0029] A. Green body stamping and forming: After the green body powder (fineness is 150 degrees) and micropowder powder (fineness is 150 degrees) are layered, punched into a green body with a bottom blank layer and a micropowder layer, wherein the micropowder layer The thickness is 1 / 2 of the thickness of the bottom layer, dry;

[0030] B. Spray water-repellent: Spray a layer of water-repellent layer on the surface of the green body, which is modified polyvinyl alcohol water-repellent (purchased from Jinan Yuekai Chemical Co., Ltd.);

[0031] C, applying glass-ceramic frit: spread transparent glass-ceramic frit on the surface of the hydrophobic layer in step B and spray a layer of polyurethane fixative, the thickness of the spread transparent glass-ceramic frit is 2mm, the amount of fixative The dosage is 300-500g / m2; if figure 1 , the adobe obtained throug...

Embodiment 1-2

[0036] A method for preparing a once-fired transparent glass-ceramic composite board, comprising the following steps:

[0037] A. Green body stamping and forming: After the green body powder (fineness is 150 degrees) and micropowder powder (fineness is 150 degrees) are layered, punched into a green body with a bottom blank layer and a micropowder layer, wherein the micropowder layer The thickness is 1 / 2 of the thickness of the bottom layer, dry;

[0038] B. Apply glass-ceramic frit: spread transparent glass-ceramic frit on the surface of the body in step A and spray a layer of polyurethane fixative, the thickness of the transparent glass-ceramic frit spread is 2mm, and the amount of fixative is 300-500g / m2;

[0039] The component of every 100kg polyurethane fixative: nonionic polyurethane associative thickener (Nae Woi Korea., Ltd. company, model HIRESOL85) 4.3kg, attapulgite clay 2.0kg, polyether type GPE defoamer ( Purchase from Hangzhou Feier Chemical Industry Co., Ltd.) ...

Embodiment 2

[0070] A method for preparing a glass-ceramic composite plate with an ice crystal effect by firing once, comprising the following steps:

[0071] A. Green body stamping and forming: After the green body powder (fineness is 70 degrees) and micropowder powder (fineness is 100 degrees) are layered, punched into a green body with a bottom blank layer and a micropowder layer, wherein the micropowder layer The thickness is 1 / 3 of the bottom base layer thickness, dry;

[0072] B. Spray water-repellent: Spray a layer of modified polyvinyl alcohol water-repellent (purchased from Jinan Yuekai Chemical Co., Ltd.) on the surface of the green body;

[0073] C. Applying glass-ceramic frit: spread high-temperature transparent frit particles (purchased from Zibo Huaci Glaze Co., Ltd., 80 mesh) on the surface of the hydrophobic layer in step B and spray a layer of polyurethane fixative to spread high-temperature transparent The thickness of the glass-ceramic frit is 2mm, and the amount of fix...

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Abstract

The invention discloses a preparation method of a one-step sintered glass-ceramic composite board. The preparation method comprises the following steps of A, carrying out impact molding on a green body; B, spraying a hydrophobic agent; C, applying glass-ceramic frits, namely spreading the glass-ceramic frits on the surface of the hydrophobic agent obtained in the step B, and spraying a layer of polyurethane fixing agent, wherein the polyurethane fixing agent is prepared from the following components in percentage by mass: 3.8-4.8% of nonionic polyurethane associative thickener, 1.8-2.4% of attapulgite clay, 0.6-1% of defoaming agent, 0.6-1.6% of dispersing agent and the balance of solvent; D, sintering, namely sintering in a kiln at the temperature of 1150-1250 DEG C; and E, polishing to obtain a finished product of the glass-ceramic composite board. By using the method, adverse effects caused by the adsorption effect of a preheating zone of the kiln to the glass-ceramic frits can be avoided, and the rate of finished products can be increased; and the hydrophobic agent is used in the scheme, so that the affect of the fixing agent to the strength of the green body can be avoided.

Description

technical field [0001] The invention relates to the technical field of building ceramics, in particular to a preparation method of a once-firing glass-ceramic composite board. Background technique [0002] The glass-ceramic composite board is a new type of composite board that combines a layer of glass-ceramic on the surface of the ceramic tile. Because the surface is a glass-ceramic layer, it is completely antifouling and easy to clean and maintain. At present, the glass-ceramic frit is mainly covered with a certain thickness of glass-ceramic frit (particle size is 15-150 mesh) on the body surface or glaze surface by means of cloth, and a layer of fixing agent is sprayed to fix the particles on the surface of the body. The surface of the green body is reprocessed after firing. The quality of the glass-ceramic frit directly determines the flatness of the brick and the decorative effect of the brick. The fixing agent used in the prior art is only ordinary glue and water. Mix...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/86C03C8/14C04B35/14
Inventor 朱培祺朱丽萍张辉艳王燕玲刘仁昌
Owner 重庆高新技术产业研究院有限责任公司
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