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Preparation method of high-stability spinel black toner

A spinel-type, high-stability technology, applied in chemical instruments and methods, inorganic chemistry, cobalt compounds, etc., can solve problems such as lack of development prospects, poor stability of black toner, simple product components, etc., to achieve Ease of popularization and application, low production cost, wide range of raw material sources

Active Publication Date: 2015-04-15
江西赛瓷材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many types of black toners currently used, usually containing two or more of Ni, Cr, Co, Mn, Fe, Ti and other elements, but due to the requirements of environmental protection, such as those containing heavy metal elements such as Cr and Mn The toner has no development prospects, and the stability of the existing black toner is not good, and the loss on ignition rate is usually greater than 2%. Therefore, the development of healthy, environmentally friendly, and high-stability black toner has always been the main research in the industry direction
For the synthesis and preparation of black toner, the methods adopted in the prior art mainly include solid-phase method and co-precipitation method. The former requires a higher synthesis temperature to form a stable colorant, and because the reaction is completed by diffusion, Therefore, the composition of the synthesized toner is uneven, the coverage of the substrate is not ideal, and the particle size is large (micron), thereby affecting and reducing the mechanical properties of the obtained material; and the latter has a long process route, and the product quality is not easy to control. The pass rate is low, and high-concentration ammonia nitrogen wastewater will be discharged, and relevant sewage treatment equipment is required
In recent years, wet chemical methods such as sol-gel method, polymer precursor method and solution combustion method have been developed and used. Toner, but these methods are still in the laboratory stage, it is still difficult to popularize and apply, and the product components are simple, thus limiting the color range of the toner

Method used

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  • Preparation method of high-stability spinel black toner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation method of the high stability spinel type black toner of the present embodiment, its steps are as follows:

[0025] (1) will Co 3 o 4 , Fe 2 o 3 , ZnO, Al 2 o 3 Mix according to the general formula and the parameter ratio shown in Table 1, and use pure water as the medium to mix uniformly in a rolling ball mill to obtain a primary mixed material;

[0026] (2) Put the primary mixed material into an oven and dry it at a temperature of 114° C. to obtain a primary powder;

[0027] (3) Add KCl to the primary powder, the addition amount is 1.3 times the mass of the primary powder, and use absolute ethanol as the medium to mix in a rolling ball mill for 3 hours to obtain a secondary mixed slurry;

[0028] (4) Put the secondary mixed slurry into an oven to dry at a temperature of 88° C. to obtain a secondary powder;

[0029] (5) Put the secondary powder in a muffle furnace for calcination reaction, the heating rate is 5°C / min, the reaction temperature is 1...

Embodiment 2

[0031] The preparation method of the high stability spinel type black toner of the present embodiment, its steps are as follows:

[0032] (1) will Co 3 o 4 , Fe 2 o 3 , ZnO, Al 2 o 3 Mix according to the general formula and the parameter ratio shown in Table 1, and use pure water as the medium to mix uniformly in a rolling ball mill to obtain a primary mixed material;

[0033] (2) Put the primary mixed material into an oven and dry it at a temperature of 110° C. to obtain a primary powder;

[0034] (3) Add a mixture of KCl:NaCl=1:2 in molar ratio to the primary powder, the addition amount is 2 times the mass of the primary powder, mix in a rolling ball mill for 3 hours with absolute ethanol as the medium, and obtain the secondary mixture slurry;

[0035] (4) Put the secondary mixed slurry into an oven to dry at a temperature of 90° C. to obtain a secondary powder;

[0036] (5) Put the secondary powder in a muffle furnace for calcination reaction, the heating rate is 10...

Embodiment 3

[0038] The preparation method of the high stability spinel type black toner of the present embodiment, its steps are as follows:

[0039] (1) CoCl 3 , FeCl 3 , ZnCl 2 , AlCl 3 Mix according to the general formula and the parameter ratio shown in Table 1, use ammonia water as the precipitating agent to carry out co-precipitation and mixing, and obtain a primary mixed material after filtration;

[0040] (2) Put the primary mixed material into an oven and dry it at 120°C to obtain the primary powder;

[0041] (3) Add NaCl to the primary powder, the addition amount is 1 time of the mass of the primary powder, and use absolute ethanol as the medium to mix in a rolling ball mill for 3 hours to obtain a secondary mixed slurry;

[0042] (4) Put the secondary mixed slurry into an oven to dry at a temperature of 84° C. to obtain a secondary powder;

[0043] (5) Put the secondary powder in a muffle furnace for calcination reaction, the heating rate is 10°C / min, the reaction temperatur...

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Abstract

The invention discloses a preparation method of a high-stability spinel black toner. The preparation method comprises the following steps: by using high-purity compounds with the Co, Fe, Zn and Al purity of 2N above as raw materials, mixing, drying, adding KCl and / or NaCl, mixing drying, calcining, and washing to obtain the spinel black toner of which the general formula is CoxZn1-x(FeyAl1-y)2O4, wherein x and y represent molar fractions, x=0.6-0.9, and y=0.6-0.9. The spinel structure black toner is free of heavy metal elements Cr and Mn, is healthy and environment-friendly, has high stability, contains multiple components, and is beneficial to adjusting the color development range of the toner. The method is simple to operate, has the advantages of wide raw material sources, low manufacturing cost, recyclable wastewater and obvious effects of energy saving and emission reduction, and is convenient for popularization and application.

Description

technical field [0001] The invention relates to the technical field of inorganic material synthesis, in particular to a preparation method of a high-stability spinel-type black toner. Background technique [0002] Black materials are widely used in various industrial products. Among them, the black inorganic material has outstanding thermal stability, mechanical properties and corrosion resistance, not only has excellent performance, but also helps to maintain the dignified, elegant and noble decorative effect endowed by the black tone, so it is used as a high-end component for decoration It has extremely high use value and broad market prospects. However, inorganic materials with a black hue often need to be obtained through extremely high sintering temperatures (above 2000°C) and harsh sintering processes (atmosphere, hot pressing, etc.), and expensive professional equipment and full-time management are required in the production process Personnel, undoubtedly greatly in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G51/00
Inventor 刘琪刘志
Owner 江西赛瓷材料有限公司