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High-saturation iron-series pigment and production method thereof

A production method and saturation technology, applied in the field of inorganic pigments, can solve the problem that the mica substrate can only be used to prepare ordinary pearlescent pigments, and achieve the effects of convenient material selection, reduced production costs, and simple production processes

Active Publication Date: 2012-06-13
河北欧克新型材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the defect in the prior art that using mica as a substrate can only prepare ordi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1 Structure: Mica / Fe 2 o 3 / SiO 2 / Fe 2 o 3 preparation of

[0027] (1) First add 32 grams of muscovite powder, with a particle size of 10 to 40 microns, into 500 ml of deionized water to form a suspension, and stir and heat to 75°C;

[0028] (2) The pH value of the suspension is then adjusted to 3.5 with 18% by weight hydrochloric acid, and then 750 ml of 80 g / l ferric chloride solution are metered in under stirring, during which time 15% by weight of hydrogen is added dropwise The sodium oxide solution kept the pH value stable, and after the feeding was completed, the constant temperature was maintained for 30 minutes;

[0029] (3) Then adjust the pH value of the suspension to 9.5 with 15% by weight sodium hydroxide solution, add 2200 ml of 35g / l sodium silicate solution dropwise under stirring, and add 18% by weight in the process Hydrochloric acid solution to keep the pH of the suspension stable, when the addition is complete, keep the temperature cons...

Embodiment 2

[0032] Example 2 Structure: Mica / Fe 2 o 3 / SiO 2 / Fe 2 o 3 / Co 2 o 3 preparation of

[0033] (1) First add 32 grams of muscovite powder, with a particle size of 10 to 40 microns, into 500 ml of deionized water to form a suspension, and stir and heat to 75°C;

[0034] (2) The pH value of the suspension is then adjusted to 1.5 with 18% by weight hydrochloric acid, and then 10 ml of a 60 g / l tin tetrachloride solution are metered in with stirring, during which time 15% by weight of hydrogen is added dropwise The sodium oxide solution kept the pH value stable, and after the feeding was completed, the constant temperature was maintained for 30 minutes;

[0035] (3) The pH value of the suspension was then adjusted to 3.5 with 18% by weight hydrochloric acid, and then 850 ml of 80 g / l ferric chloride solution were metered in with stirring, during which time 15% by weight of hydrogen was added dropwise The sodium oxide solution kept the pH value stable, and after the feeding w...

Embodiment 3

[0039] Example 3 Structure: Mica / Fe 2 o 3 / SiO 2 / Fe 2 o 3 / Co 2 o 3 preparation of

[0040] (1) First add 32 grams of muscovite powder, with a particle size of 10 to 40 microns, into 500 ml of deionized water to form a suspension, and stir and heat to 75°C;

[0041] (2) The pH value of the suspension is then adjusted to 3.5 with 18% by weight hydrochloric acid, and then 950 ml of 80 g / l ferric chloride solution are metered in under stirring, during which time 15% by weight of hydrogen is added dropwise The sodium oxide solution kept the pH value stable, and after the feeding was completed, the constant temperature was maintained for 30 minutes;

[0042](3) Then adjust the pH value of the suspension to 9.5 with 15% by weight sodium hydroxide solution, add 2500 ml of 35g / l sodium silicate solution dropwise under stirring, and add 18% by weight in the process Hydrochloric acid solution to keep the pH of the suspension stable, when the addition is complete, keep the tempe...

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Abstract

The invention provides a high-saturation iron-series pigment and a production method thereof. The high-saturation iron-series pigment is characterized in that: mica is taken as a substrate, high-refractivity substances and low-refractivity substances are alternatively coated on the substrate, the low-refractivity substances include silicon dioxide, aluminum trioxide and diboron trioxide, and the high-refractivity substances include titanium dioxide, tin dioxide, ferric oxide, cobalt oxide, zirconium dioxide and dichromium trioxide. The production method of the pigment is mainly characterized in that: a soluble salt which corresponds to each of the substances is hydrolyzed and precipitated on the surface of the mica substrate at an appropriate pH value, and the precipitated soluble salt is calcined at the temperature of 450-750 DEG C, so that a coating substance is transformed into an oxide. Compared with a synthetic silicon dioxide substrate, the method has the advantages of higher convenience for drawing materials, low price and reduction in the production cost of the high-saturation iron-series pigment. A hydrolyzing coating process is easy to operate and control, the thickness of a coating layer can be controlled through the color phase change of the pigment, and a production process is simple.

Description

technical field [0001] The invention belongs to the field of inorganic pigments, and in particular relates to high-saturation iron series pigments and a production method thereof. Background technique [0002] Due to human yearning for beauty, different colorful pigments have been developed to beautify life, and high-saturation pigments have brightness and vividness comparable to organic pigments. The currently produced high-saturation pigments are mainly based on artificially synthesized silica, and the surface is coated with a metal oxide layer by a wet chemical process. Since the thickness of the artificially synthesized substrate is only 200-500nm, and the substrate The requirement for surface smoothness is very high, and the cost is high, so that the production cost of this type of high-saturation pigment is too high. [0003] The pearlescent pigment made by coating the metal oxide layer on the surface of mica, because part of the incident light is refracted and reflec...

Claims

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Application Information

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IPC IPC(8): C09C1/40C09C3/06
Inventor 彭义霆田晓辉丁春玲刘文军安建霞王美娜
Owner 河北欧克新型材料股份有限公司
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