A kind of preparation method of black zirconia pigment and ceramics

A technology of black zirconia and zirconia biscuit, which is applied in chemical instruments and methods, fibrous fillers, dyeing physical treatment, etc., can solve the problems of mechanical properties reduction of zirconia ceramic materials, and achieve excellent mechanical properties and wide application , the effect of inhibiting volatilization

Active Publication Date: 2021-07-09
SHENZHEN TAOTAO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method reduces the sintering temperature, it leads to a significant decrease in the mechanical properties of zirconia ceramic materials.

Method used

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  • A kind of preparation method of black zirconia pigment and ceramics
  • A kind of preparation method of black zirconia pigment and ceramics
  • A kind of preparation method of black zirconia pigment and ceramics

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preparation example Construction

[0032] Such as figure 1 Shown, the preparation method of the black zirconia pigment of the present embodiment comprises the following steps:

[0033] S1. Preparation of chromogenic agent powder: Weigh pure Fe(NO3)3·9H2O and Co(NO3)2·6H2O respectively in evaporating dish with a molar ratio of 2:1, and carefully use a glass rod in a fume hood Heating under stirring makes it melt, and evaporates until completely decomposed to form solid oxides. The solid oxide is transferred to a corundum crucible and pyrolyzed in a muffle furnace. The pyrolysis process is divided into two stages. The heating rate of the first stage is 2-4°C / min, and the heating temperature is 640-660°C. ℃, the holding time is 1-2h; the heating rate of the second stage is 4-6°C / min, the heating temperature is 1265-1285°C, and the holding time is 1-2h. After pyrolysis, the temperature is naturally cooled down to room temperature. The room temperature in this application is 5-35° C., and CFO ferromagnetic powder ...

Embodiment 1

[0048] Embodiment 1: The preparation method of the black zirconia color material of this embodiment is the same as the preparation method of the black zirconia color material of the above-mentioned embodiment, and will not be repeated here, and the data of the specific embodiment are as follows:

[0049] S1. Preparation of chromogenic agent powder: The pyrolysis process in this step is divided into two stages. The heating rate of the first stage is 3°C / min, the heating temperature is 650°C, and the holding time is 1h; the heating rate of the second stage is The heating temperature is 5°C / min, the heating temperature is 1275°C, and the holding time is 1.5h.

[0050] S1.1. Ball milling step: in this step, the ball milling time is 4 hours, and the drying heating temperature is 120°C.

[0051] S2. Coating preparation: In this step, 30 parts by mass of the CFO powder, 100 parts by mass of absolute ethanol, and 100 parts by mass of xylene were weighed in this step, and the time for ...

Embodiment 2

[0053] Embodiment 2: the preparation method of the black zirconia pigment of the present embodiment, wherein the data of specific implementation are as follows:

[0054] S1. Preparation of chromogenic agent powder: The pyrolysis process in this step is divided into two stages. The heating rate of the first stage is 2°C / min, the heating temperature is 640°C, and the holding time is 2h; the heating rate of the second stage is The temperature is 4°C / min, the heating temperature is 1265°C, and the holding time is 1h.

[0055] S1.1. Ball milling step: in this step, the ball milling time is 3 hours, and the drying heating temperature is 110°C.

[0056] S2. Coating preparation: In this step, 20 parts by mass of the CFO powder, 100 parts by mass of absolute ethanol, and 100 parts by mass of xylene were weighed in this step, and the time for ultrasonic dispersion and stirring was 10 minutes. The zirconium isopropoxide added was 2 parts by mass, and the solvent added dropwise was 7 par...

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Abstract

The invention provides a method for preparing a black zirconia pigment, which includes the following steps: S1. Preparation of color developing agent powder: mixing ferric nitrate nonahydrate and cobalt nitrate hexahydrate, heating and melting, and performing pyrolysis to cool down to obtain Chromogenic agent CFO powder. S2. Coating preparation: after dispersing and stirring the CFO powder, absolute ethanol and xylene; adding zirconium isopropoxide and stirring to obtain the first mixture; A solvent is added dropwise into a mixture, and the solvent is a mixture of water and ethanol, and the second mixture is pyrolyzed to obtain a black zirconia pigment powder. The present invention also provides a method for preparing black zirconia ceramics, adding S3 degreasing step and S4 sintering step on the basis of the above method to obtain black zirconia ceramics. The preparation method of the black zirconia pigment and ceramics of the present invention has uniform color of the ceramics, effectively suppresses the volatilization of the color developing agent, and has good mechanical properties.

Description

technical field [0001] The invention relates to the technical field of ceramic preparation, in particular to a black zirconia pigment and a method for preparing ceramics. Background technique [0002] In recent years, my country's zirconium industry has developed rapidly, its production capacity ranks first in the world, and its technical level ranks among the world's advanced ranks. Zirconia (ZrO2) is widely used in ceramics, electronics, jewelry, metallurgical industry, catalysts, medical treatment, and automobile exhaust purification. Has been widely used. Zirconium series products based on zirconia are known as one of the most promising high-tech materials in the 21st century. [0003] Among them, black zirconia ceramics has become a new favorite material for high-end decoration due to its excellent mechanical properties, bright colors, metallic luster and non-allergic effects. It has broad market prospects in high-end watch chains, bracelets, and mobile phone casings. ...

Claims

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Application Information

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IPC IPC(8): C09C1/00C09C1/24C09C3/06C09C3/04C04B35/48C04B35/622C04B35/63
CPCC04B35/48C04B35/622C04B35/6303C04B2235/9661C09C1/0012C09C1/24C09C3/006C09C3/041C09C3/063
Inventor 杨青松秦宏友冼锐伟毕倩兰徐信林李禅吴沙鸥李方伟
Owner SHENZHEN TAOTAO TECH CO LTD
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