Method for preparing high-color-developing zirconium-silicate-coated carbon black pigment by taking plant fiber as carbon source

A plant fiber, zirconium silicate technology, applied in the field of ceramic pigments, can solve the problems of unfavorable packaging, poor dispersion of zirconium silicate sol, low affinity, etc., and achieve the effect of broad market space, pure color and high packaging rate

Active Publication Date: 2016-01-20
JINGDEZHEN CERAMIC INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, commercial carbon black powder is the main raw material for the preparation of zirconium silicate-coated pigments, but the organic functional groups on the surface of carbon black are less, and the affinity with water or organic solvents is lower. Therefore, the dispersion in zirconium silicate sol is poor, which is not conducive to wrapping
There is no report of using plant fiber as carbon source to prepare zirconium silicate wrapped carbon black material

Method used

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  • Method for preparing high-color-developing zirconium-silicate-coated carbon black pigment by taking plant fiber as carbon source
  • Method for preparing high-color-developing zirconium-silicate-coated carbon black pigment by taking plant fiber as carbon source
  • Method for preparing high-color-developing zirconium-silicate-coated carbon black pigment by taking plant fiber as carbon source

Examples

Experimental program
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Effect test

Embodiment 1

[0023] The sisal fiber was dried and dehydrated at 200°C, and the zirconium silicate sol was prepared by using the non-hydrolytic sol-gel method, that is, the molar ratio of ZrCl 4 : Ethyl Tetrasilicate: LiF=1:1.2:0.3 ratio ZrCl 4 , tetraethyl orthosilicate and LiF dissolved in isopropanol, where Zr 4+ The concentration is 1mol / L, after mixing evenly, reflux and heat at 110°C for 20 hours to obtain a zirconium silicate sol; then weigh 0.5g sisal fiber and ultrasonically disperse it in 13mL zirconium silicate sol, and then dry it in an oven at 100°C The dry gel was obtained in 6 hours; then heated at 5°C per minute to 900°C for 4 hours in a nitrogen atmosphere, and cooled with the furnace; then heated at 5°C per minute to 800°C for 2 hours in an air atmosphere to remove excess The wrapped carbon black obtains the zirconium silicate wrapped carbon black material.

[0024] from figure 1 It can be observed that the sisal fiber is a porous structure; figure 2 The BET test also...

Embodiment 2

[0026] The preparation method and preparation conditions of this embodiment are the same as those of the above-mentioned Example 1. The difference is that the cotton fiber used is a carbon source, and the cotton fiber is dried and dehydrated at 150° C., and the molar ratio is zirconium acetate: silane coupling agent: Dissolve zirconium acetate, silane coupling agent and MgF in the ratio of MgF=1:1.1:0.2 in 13mL of ethanol solvent, then place it in a 25mL polyethylene-lined reactor, and take it out after solvothermal reaction at 100°C for 10 hours Finally, zirconium silicate sol was obtained; then 0.3 g of cotton fiber was weighed and ultrasonically dispersed in 13 mL of zirconium silicate sol, and then dried in an oven at 110° C. for 12 hours to obtain xerogel. Then, in a nitrogen atmosphere, the temperature was raised to 1050° C. for 4 hours at a rate of 5° C. per minute, and then cooled with the furnace. Then in an air atmosphere, heat up to 700°C at 5°C per minute and keep ...

Embodiment 3

[0029] The preparation method and preparation conditions of this embodiment and the above-mentioned embodiment 1 are the same, and the difference is that the rice straw fiber is used as the carbon source, and the molar ratio is zirconium isopropoxide: silicon tetrachloride: NaF=1:1.3:0.25 Ratio Dissolve zirconium isopropoxide, silicon tetrachloride and NaF in solvent toluene, where Zr 4+ The concentration is 1mol / L, and the zirconium silicate sol is obtained by microwave at 120°C for 0.5 hours in a commercially available microwave oven, and then 0.37g of rice straw fiber is weighed and placed in 13mL of zirconium silicate sol for 1 hour, and dried in an oven at 90°C for 20 After 1 hour to obtain dry gel; then in a nitrogen atmosphere at 5 ° C per minute to 750 ° C for 2 hours, followed by furnace cooling; then in an air atmosphere at 5 ° C per minute to 750 ° C for 2 hours to remove excess unwrapped The carbon black was obtained to obtain zirconium silicate wrapped carbon blac...

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Abstract

The invention discloses a method for preparing a high-color-developing zirconium-silicate-coated carbon black pigment by taking plant fiber as a carbon source. Good dispersing can be formed in zirconium silicate sol through the porous structure and spatial distribution of the plant fiber, and the high-color-developing zirconium-silicate-coated carbon black pigment which is coated compactly is obtained through hot treatment in a high-temperature inert atmosphere. The coated black pigment has the advantages of being pure in color and luster, easy to prepare, wide in raw materials, low in price, easy to obtain, green and environmentally friendly, can be applied to coloring in glazes or blanks of ceramic products and is suitable for industrialized production.

Description

technical field [0001] The invention belongs to the technical field of ceramic pigments, and in particular relates to a method for preparing high-color zirconium silicate-wrapped carbon black material by using plant fiber as a carbon source. Background technique [0002] With the continuous improvement of people's living standards, the demand for ceramic daily necessities and handicrafts continues to rise. Ceramic pigment refers to the coloring material used in the glaze or blank of ceramic products, which is dispersed in the form of powder or liquid, and has excellent color rendering effect after high-temperature heat treatment. Black ceramic pigments are an important class of ceramic decorative pigments. They are popular because of their calm, dignified and vigorous coloring effects, accounting for about 25% of the ceramic pigment market share. At present, black ceramic pigments are mainly spinel oxides containing cobalt or chromium. Cobalt and chromium are variable-vale...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/86C04B35/16C04B35/628
Inventor 陈婷江伟辉刘健敏张筱君冯果
Owner JINGDEZHEN CERAMIC INSTITUTE
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