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High-strength domestic ceramic prestressed coating material and preparation method and ceramic product thereof

A technology for coating materials and ceramic products, which is applied in the field of ceramic products, can solve problems such as difficult popularization and application, and achieve the effects of simple and easy process, easy industrial application and promotion, and improved mechanical properties

Active Publication Date: 2019-03-01
JINGDEZHEN CERAMIC INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the methods of densification and fine-graining in the prior art are mainly used to enhance the strength of ceramic materials, or the introduction of reinforcing phases. Although certain results have been achieved, it is still difficult to popularize and apply them in large quantities, and it is also difficult to obtain new breakthrough

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  • High-strength domestic ceramic prestressed coating material and preparation method and ceramic product thereof
  • High-strength domestic ceramic prestressed coating material and preparation method and ceramic product thereof
  • High-strength domestic ceramic prestressed coating material and preparation method and ceramic product thereof

Examples

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Effect test

Embodiment 1

[0029] 1, a kind of high-strength daily-use ceramic prestressed coating material of the present embodiment is made up of base material and binder solution according to base material: binder solution=1g: 5mL; Wherein, the raw material of base material is composed of Al 2 o 3 16wt%, SiO 2 58wt%, MgO2 2wt%, ZnO 4wt%; the binder solution is an absolute ethanol solution of PVB, and its concentration is 5wt%.

[0030] 2, the preparation method of above-mentioned high-strength daily-use ceramic prestressed coating material, its step is as follows:

[0031] (1) Preparation of base material

[0032] According to the composition and ingredients of the above raw materials, after wet ball milling for 30 minutes, passing through a 200-mesh sieve and drying, calcining at a temperature of 1150°C, the heating rate is 4°C / min, and the holding time is 0.5h. After cooling, it is crushed and passed through a 250-mesh sieve, that is get base material;

[0033] (2) Preparation of binder solut...

Embodiment 2

[0042] The differences between this embodiment and Embodiment 1 are:

[0043] 1. The coating material of this embodiment is composed of base material and binder solution according to base material: binder solution=1g: 6mL; wherein, the raw material of base material is composed of Al 2 o 3 12.5wt%, SiO 2 62.5wt%, MgO 21wt%, ZnO 4wt%; the binder solution is a deionized aqueous solution of PVA.

[0044] 2. In the preparation method of the coating material in this embodiment, the calcination temperature in step (1) is 1180°C, the heating rate is 5°C / min, and the holding time is 1h; the softening treatment time in step (2) is 10h.

[0045] 3. In this embodiment, a high-strength daily-use ceramic product is prepared. The coating thickness is 200 μm; the sintering temperature is 1280° C., and the holding time is 2.5 hours.

Embodiment 3

[0047] The differences between this embodiment and Embodiment 1 are:

[0048] 1. The coating material of this embodiment is composed of base material and binder solution according to base material: binder solution=1g: 7mL; wherein, the raw material of base material is composed of Al 2 o 3 16wt%, SiO 2 60wt%, MgO 20wt%, ZnO 4wt%; the binder solution is a deionized water solution of PVA.

[0049]2. In the preparation method of the coating material in this embodiment, the calcination temperature in step (1) is 1190°C, the heating rate is 3°C / min, and the holding time is 1.5h; the softening treatment time in step (2) is 11h.

[0050] 3. In this embodiment, a high-strength daily-use ceramic product is prepared. The coating thickness is 280 μm; the sintering temperature is 1300° C., the heating rate is 4° C. / min, and the holding time is 2 hours.

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Abstract

The invention discloses a high-strength domestic ceramic prestressed coating material. The high-strength domestic ceramic prestressed coating material consists of a base material and an adhesive solution under the condition that the ratio of the base material to the adhesive solution equals to 1 g: 4-8 mL; the base material comprises the following raw material components: 10-20 wt% of Al2O3, 45-70wt% of SiO2, 12-28 wt% of MgO and 2-10 wt% of ZnO; and the adhesive solution is a solution of one or more of CMC, PVA, PVB or water glass, and the concentration of the adhesive solution is 5-10 wt%.The invention further discloses a preparation method and a ceramic product of the high-strength domestic ceramic prestressed coating material. A surface coating mode is adopted, by adjusting and optimizing the ratio of the coating raw materials, pressure stress is introduced on the surface of a ceramic blank by coated layer coating treatment, and therefore, the integral strength of ceramics is improved remarkably. Raw materials are toxic-free and pollution-free, the process is simple and practicable, and industrialized application and popularization are facilitated.

Description

technical field [0001] The invention relates to the technical field of coating materials, in particular to a coating material for improving the strength of daily-use ceramics, a preparation method thereof and ceramic products. Background technique [0002] With the development of the times, people have higher and higher requirements for the performance of ceramic products, especially, the strength of ceramic materials can no longer meet people's increasing application requirements for ceramic materials. Ceramic strength is not only an important performance index of ceramic materials, but also ceramic reinforcement is of great significance to the safety and reliability of components. It is the core of the development of structural ceramics and the key to energy saving and consumption reduction of daily-use and building sanitary ceramics. Therefore, finding new ways to strengthen ceramic materials has become one of the hot spots in the field of ceramic materials. At present, ...

Claims

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Application Information

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IPC IPC(8): C04B41/87
CPCC04B41/5035C04B41/87C04B41/4539C04B41/0072
Inventor 沈宗洋李月明包亦望孙熠
Owner JINGDEZHEN CERAMIC INSTITUTE
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