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A kind of prestressed ceramics and preparation method thereof

A prestressing and prestressing layer technology, applied in the field of architectural ceramics, can solve the problems of low strength and low impact resistance, and achieve the effects of high strength, improved prestress and uniform thermal stress

Active Publication Date: 2021-11-02
佛山市东鹏陶瓷发展有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems raised by the background technology, the purpose of the present invention is to propose a prestressed ceramic. By setting the first prestressed layer and the second prestressed layer on the surface and the bottom of the green body respectively, when the ceramic is subjected to a certain external tension The stress will be offset by the first prestressed layer and the second prestressed layer, thereby greatly improving the strength and toughness of the ceramic, avoiding the destruction of the ceramic structure, and solving the problems of low impact resistance and low strength of the existing ceramics, and Applying the Prestressed Reinforcement Method to the Field of Architectural Ceramics

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  • A kind of prestressed ceramics and preparation method thereof
  • A kind of prestressed ceramics and preparation method thereof

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preparation example Construction

[0050] A kind of preparation method of prestressed ceramics, for above-mentioned prestressed ceramics, this preparation method comprises the following steps:

[0051] (1) Burn the frit;

[0052] (2) Mix the fired frit and other raw materials of the prestressed layer, add water and ball mill, and ball mill to obtain the prestressed glaze slurry,

[0053] (3) Apply the prestressed glaze slurry to the surface of the body to obtain the first prestressed layer, or use the prestressed glaze slurry to make a prestressed powder using a spray drying tower, and distribute the prestressed powder on the surface of the blank , press molding to obtain a green body and form a first prestressed layer on the surface of the green body;

[0054] (4) Firing the semi-finished ceramics obtained in step (3) to obtain prestressed ceramics.

[0055] Specifically, in step (2), the prestressed glaze slurry after ball milling is passed through a 100-mesh sieve, and the water content of the prepared pre...

Embodiment 1-8

[0070] A kind of prestressed ceramics, the prestressed ceramics includes a green body and a first prestressed layer located on the surface of the adobe, the raw materials of the first prestressed layer include calcite, kaolin, quartz, spodumene, zinc oxide, barium carbonate and The frit, the thickness of the first prestressed layer is 270 μm. Wherein, the raw material formula ratio of the first prestressed layer is shown in Table 1 below.

[0071] In parts by weight, the raw materials of the frit are 15 parts of kaolin, 15 parts of quartz, 12 parts of talc, 17 parts of dolomite, 8 parts of aluminum oxide, 3 parts of zinc oxide, 13 parts of wollastonite and 8 parts of spodumene.

[0072] The preparation method of the prestressed ceramics comprises the following steps:

[0073] (1) Fire the frit at 1520°C and keep it warm for 30 minutes;

[0074] (2) Mix the fired frit and other raw materials of the prestressed layer, add water and ball mill, and ball mill to obtain a prestres...

Embodiment 9-10

[0082] The formula of the first prestressed layer in the present embodiment 9-10 is identical with embodiment 1-2, and difference is that the preparation method of embodiment 9-10 is different from embodiment 1-2, and the preparation method of implementation 9-10 Include the following steps:

[0083] (1) Fire the frit at 1520°C and keep it warm for 30 minutes;

[0084] (2) Mix the fired frit and other raw materials of the prestressed layer, add water and ball mill, and ball mill to obtain the prestressed glaze slurry;

[0085] (3) The prestressed glaze slurry is made into prestressed powder by spray drying tower, and the fineness of prestressed powder is 250;

[0086] (4) Applying the prestressed powder on the surface of the blank, pressing and forming it by means of cloth, to obtain the blank and form a first prestressed layer on the surface of the blank;

[0087] (5) Fire the semi-finished ceramics obtained in step (4), and heat them at 573° C. for 20 minutes and 1180° C. ...

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Abstract

The invention discloses a prestressed ceramic and a preparation method thereof, comprising a green body and a first prestressed layer on the surface of the green body, the thermal expansion coefficient of the first prestressed layer is smaller than that of the green body; the raw material of the first prestressed layer Including calcite, kaolin, quartz, spodumene, zinc oxide, barium carbonate and frit; wherein, the raw materials of frit include kaolin, quartz, talc, dolomite, alumina, zinc oxide, wollastonite and spodumene. In the prestressed ceramics of the present invention, the first prestressed layer is respectively arranged on the surface and the bottom surface of the green body, and when the ceramic is subjected to a certain external tensile stress, it will be offset by the prestressed force of the first prestressed layer, thereby greatly improving The strength and toughness of the ceramics prevent the ceramic structure from being destroyed, and solve the problems of low impact resistance and low strength of the existing ceramics. Preferably, the prestressed ceramics of the present invention belong to the field of architectural ceramics.

Description

technical field [0001] The invention relates to the technical field of architectural ceramics, in particular to a prestressed ceramic and a preparation method thereof. Background technique [0002] With the continuous growth of my country's economy, people's requirements for quality of life are also constantly improving, resulting in higher and higher demand for materials, especially in the aspect of architectural ceramics, which not only require exquisite appearance, but also have excellent performance. As we all know, ceramics have the disadvantages of high brittleness, low impact resistance, low strength, heavy weight, and difficult transportation, and they are prone to failure due to stress concentration and fracture. Therefore, how to improve the hardness of ceramics is the goal that ceramic enterprises have always wanted to overcome. [0003] At present, there are many ways to enhance the strength of ceramics: densification enhancement, in-situ autogenous crystal phas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/86C03C8/04C03C8/14
CPCC03C8/04C03C8/14C04B41/5022C04B41/86C04B41/4539C04B41/4545
Inventor 张智鹏江彬轩秦汉陈志锋罗强李智鸿钟保民
Owner 佛山市东鹏陶瓷发展有限公司
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