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Preparation method of zirconium silicate wrapped carbon black pigment by microwave synthesis

A technology of microwave synthesis and zirconium silicate is applied in the field of microwave synthesis of zirconium silicate-coated carbon black material, which can solve the problems of unreported development and application, difficulty in the stability of pigments, etc., and achieves pure and stable color rendering and low cost The effect of low and simple preparation process

Inactive Publication Date: 2013-05-22
JINGDEZHEN CERAMIC INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The stability of pigments has always been a problem in ceramic production, especially high-temperature (1300°C) pigments. At present, only cadmium selenium red (yellow) pigments wrapped in zirconium silicate are high-temperature stable pigments, while other color packages The development and application of colorants has not been reported yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The technological process of preparing black pigment by wrapping carbon black with zirconium silicate is as follows:

[0023] Step 1, industrial pure anhydrous ZrCl 4 Added to industrial pure Si(OC 2 h 5 ) 4 solution, control Zr +4 with Si +4 The molar ratio is 1:1.2, and the gel mixture A is formed after high-speed stirring at room temperature for 20 minutes;

[0024] Step 2, add the dried high-pigment carbon black and LiF to absolute ethanol; control the amount of carbon black and LiF: carbon black:LiF:Zr +4 The molar ratio is 0.35:0.3:1, the amount of absolute ethanol is based on Si(OC 2 h 5 ) 4 The same volume of the solution shall prevail to obtain the mixed solution B;

[0025] Step 3: Stir the B mixture at high speed for 20 minutes, then ultrasonically treat it for 20 minutes, and then stir it at high speed for 20 minutes;

[0026] Step 4: Mix A and B with each other and stir evenly, then heat in an oil bath at 110°C under reflux to obtain a precursor s...

Embodiment 2

[0029] The technological process of preparing black pigment by wrapping carbon black with zirconium silicate is as follows:

[0030] Step 1, industrial pure anhydrous ZrCl 4 Added to industrial pure Si(OC 2 h 5 ) 4 solution, control Zr +4 with Si +4 The molar ratio is 1:1.2, and the gel mixture A is formed after high-speed stirring at room temperature for 20 minutes;

[0031] Step 2, add the dried high wear-resistant carbon black and LiF to absolute ethanol; control the amount of carbon black and LiF: carbon black:LiF:Zr +4 The molar ratio is 0.3:0.3:1, and the amount of absolute ethanol is based on Si(OC 2 h 5 ) 4 The same volume of the solution shall prevail to obtain the mixed solution B;

[0032] Step 3: Stir the B mixture at high speed for 20 minutes, then ultrasonically treat it for 20 minutes, and then stir it at high speed for 20 minutes;

[0033] Step 4: Mix A and B with each other and stir evenly, then heat in an oil bath at 110°C under reflux to obtain a p...

Embodiment 3

[0036] The technological process of preparing black pigment by wrapping carbon black with zirconium silicate is as follows:

[0037] Step 1, industrial pure anhydrous ZrCl 4 Added to industrial pure Si(OC 2 h 5 ) 4 solution, control Zr +4 with Si +4 The molar ratio is 1:1.2, and the gel mixture A is formed after high-speed stirring at room temperature for 20 minutes;

[0038] Step 2, add the dried acetylene carbon black and LiF to absolute ethanol; control the amount of carbon black and LiF: carbon black:LiF:Zr +4 The molar ratio is 0.25:0.3:1, the amount of absolute ethanol is based on Si(OC 2 h 5 ) 4 The same volume of the solution shall prevail to obtain the mixed solution B;

[0039] Step 3: Stir the B mixture at high speed for 20 minutes, then ultrasonically treat it for 20 minutes, and then stir it at high speed for 20 minutes;

[0040] Step 4: Mix A and B with each other and stir evenly, then heat in an oil bath at 110°C under reflux to obtain a precursor sol,...

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PUM

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Abstract

The invention discloses a preparation method of zirconium silicate wrapped carbon black pigment by a microwave synthesis. The preparation method comprises the following steps of: synthesizing the black pigment with high parcel rate by using high pigment carbon black or high wear-resistant carbon black or acetylene carbon black as raw materials through a microwave heating method at a temperature of 900-1000 DEG C. The synthesis method is simple in technology, fast in synthesis speed and low in synthesis temperature, the prepared black pigment is pure in color and stable in performance, and the usage temperature can be 1300 DEG C, so that the black pigment can be widely used in high-temperature glaze of various ceramic products, and has a high economic value.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials (ceramics), and in particular relates to a preparation method of microwave-synthesized zirconium silicate-wrapped carbon black material. Background technique [0002] The removal of (Cr, Fe) from black pigments currently used in ceramic production 2 o 3 Except corundum type, others are spinel type pigments, such as FeO·Fe 2 o 3 , Co-Cr-Fe, Co-Mn-Fe, Co-Mn-Cr-Fe, Co-Ni-Cr-Fe, Co-Mn-Ni-Cr-Fe, Co-Mn-Al-Cr-Fe, Co -Ni-Cr-Fe-Si etc. Although the spinel pigment has a stable structure, high temperature resistance, low sensitivity to the atmosphere and good chemical stability, these pigments only have the best color in the lime glaze, and the lime glaze is required to be zinc-free and non-flammable. Magnesium, or low zinc, low magnesium. These pigments are unstable in calcium-magnesium glazes, and in most cases, more stable spinels are formed, making them gray or gray-green; while in c...

Claims

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Application Information

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IPC IPC(8): C04B41/86
Inventor 刘阳刘明泉
Owner JINGDEZHEN CERAMIC INSTITUTE
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