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High temperature resistant pearlescent pigment and preparation method thereof

A technology of pearlescent pigments and high temperature resistance, applied in the direction of inorganic pigment treatment, chemical instruments and methods, fibrous fillers, etc., can solve the problems of poor color fastness, long production cycle, complicated production process, etc.

Active Publication Date: 2015-02-04
GUANGXI CHESIR PEARL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production process is complicated, the production cycle is long, the color fastness is not good, and the dazzling beauty of pearlescent pigments cannot be fully displayed
The ideal way is to use pearlescent pigments under the glaze, in the glaze, and on the glaze, so that the blank and the overglaze color can be fired once, and two major defects in the application of pearlescent pigments must be solved: one is high temperature resistance, and the use temperature must reach Above 1000°C; the second is the thermal stability of pearlescent pigments in the glaze, which should be fully dispersed without reacting with the glaze, and exist in the form of solid solution
Therefore this patent fails to effectively solve the above two major defects

Method used

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  • High temperature resistant pearlescent pigment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Weigh 90 g of pearlescent grade synthetic mica powder with a particle size of 40 to 160 μm, add 720 ml of deionized water according to solid-liquid (1:8), and stir to form a suspension;

[0035] (2) Stir the suspension and heat it up to 62°C, adjust the pH value to 1.5 with dilute hydrochloric acid; under constant temperature stirring, slowly add 2% (wt) SnCl 4 ·5H 2 O solution 90ml, dropwise add 20%NaOH solution simultaneously to keep the pH value constant, and stir at constant temperature for 15 minutes after the dropwise addition;

[0036] (3) Stir and heat up to 75°C, adjust the pH value of the suspension to 1.8 with dilute liquid alkali, and slowly add 2mol / L TiCl dropwise 4 solution, while adding 20% ​​NaOH solution dropwise to keep the pH value constant until the color reaches silvery white, and continue to stir at constant temperature for 15 minutes;

[0037] (4) Keep the temperature at 75°C, adjust the pH value to 3.4 with dilute liquid alkali, slowly add...

Embodiment 2

[0042] (1) Weigh 90g of pearlescent grade synthetic mica powder with a particle size of 40-160 μm, add 900ml of deionized water according to solid-liquid (1:10), and stir to form a suspension;

[0043] (2) Stir the suspension and heat it up to 66°C, adjust the pH value to 1.6 with dilute hydrochloric acid; under constant temperature stirring, slowly add 2.5% (wt) SnCl 4 ·5H 2 O solution 90ml, dropwise add 20%NaOH solution simultaneously to keep the pH value constant, and stir at constant temperature for 15 minutes after the dropwise addition;

[0044] (3) Stir and heat up to 80°C, adjust the pH value of the suspension to 2.0 with dilute liquid alkali, and slowly add 2mol / L TiCl dropwise 4 solution, while adding 20% ​​NaOH solution dropwise to keep the pH value constant until the color reaches silvery white, and continue to stir at constant temperature for 15 minutes;

[0045] (4) Keep the temperature at 80°C, adjust the pH value to 3.8 with dilute liquid alkali, slowly add 1...

Embodiment 3

[0050] (1) Weigh 90g of pearlescent grade synthetic mica powder with a particle size of 40-160 μm, add 1080ml of deionized water according to solid-liquid (1:12), and stir to form a suspension;

[0051] (2) Stir the suspension and heat it up to 70°C, adjust the pH value to 1.8 with dilute hydrochloric acid; under constant temperature stirring, slowly add 3% (wt) SnCl 4 ·5H 2 O solution 90ml, dropwise add 20%NaOH solution simultaneously to keep the pH value constant, and stir at constant temperature for 15 minutes after the dropwise addition;

[0052] (3) Stir and heat up to 85°C, adjust the pH value of the suspension to 2.2 with dilute liquid alkali, and slowly add 2mol / L TiCl dropwise 4 solution, while adding 20% ​​NaOH solution dropwise to keep the pH value constant until the color reaches silvery white, and continue to stir at constant temperature for 15 minutes;

[0053] (4) Keep the temperature at 85°C, adjust the pH value to 4.2 with dilute alkali, slowly add 150g (ZrO...

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Abstract

The invention relates to a high temperature resistant pearlescent pigment including a synthetic mica substrate, one layer or multi layers of metal oxide layer coating the synthetic mica substrate, and a zirconia high temperature resistant layer coating the metal oxide layer. The high temperature resistant pearlescent pigment using high temperature is up to 1150 DEG C, the high temperature resistant pearlescent pigment can be stably and well dispersed at high temperature, and can be widely used in underglaze color, in-glaze color, overglaze color, enamel, enamel paper transfers, architectural enamel plates, permanent color scales, high temperature resistant paints and other industries, and the usage amount is 0.5 ~ 50% of that of a glaze or a coating.

Description

technical field [0001] The invention relates to a high temperature resistant pearlescent pigment and a preparation method thereof. Background technique [0002] Pearlescent pigment is a kind of optical interference effect pigment obtained by coating natural mica, synthetic mica, glass flakes, alumina and other flake materials on it with one or more layers of high refractive index metal oxides. According to different coating thicknesses, different pigments are presented. This kind of pigment has high gloss, floppy color and rich colors. It is widely used in many fields such as coatings, cosmetics, plastics, synthetic leather, etc., but its application in the ceramic industry has been greatly restricted, except for a small amount of pearlescent pigments as decals, screen printing as overglaze colors, and low-temperature baking The method is applied to daily-use pottery, artistic pottery and building pottery, Wei pottery, fails to be widely used. The reason is that the firing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C3/06C09C1/40C04B41/85C04B41/86
Inventor 杨伦全周建华蒙延娟秦志清
Owner GUANGXI CHESIR PEARL MATERIAL CO LTD
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