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Preparation method of colored magnetic pearlescent pigment

A pearlescent pigment and color magnetic technology, applied in the field of pigments, can solve the problems of easy oxidation of magnetic pearlescent, high equipment and operation requirements, and influence on large-scale production, and achieve significant 3D effects, strong magnetic permeability, and bright colors.

Inactive Publication Date: 2020-01-21
河南凌宝新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation process of this invention needs to be carried out under anaerobic conditions, which requires high equipment and operation, high production costs, and affects its large-scale production; the prepared black glossy magnetic pearlescent is easy to oxidize, resulting in a decrease in color purity and magnetic properties

Method used

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  • Preparation method of colored magnetic pearlescent pigment
  • Preparation method of colored magnetic pearlescent pigment
  • Preparation method of colored magnetic pearlescent pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation method of colored magnetic pearlescent pigment comprises the following steps:

[0029] Step S1: Weigh 100g of the pretreated substrate, add 1000ml of distilled water, adjust the pH to 2.0, raise the temperature to 75°C, add titanium tetrachloride solution at a flow rate of 45ml / min, feed until different colors appear, stop feeding after the feeding is completed Stir for 30 minutes, heat up to 80°C, add alkali to adjust to pH=9.0;

[0030] Step S2: Under the conditions of temperature 80°C and pH=9.0, add 0.2mol / l sodium silicate solution, flow rate 60ml / min, time 2min, stop feeding and stir for 30min, add hydrochloric acid to adjust pH=3.4;

[0031] Step S3: Under the conditions of temperature 80°C and pH=3.4, add ferric chloride solution at a flow rate of 0.7 L / min, stop feeding and stir for 30 minutes after the feeding, and add alkali to adjust the pH to 7.8;

[0032] Step S4: Under the conditions of temperature 80°C and pH=7.8, add the ferrous chlorid...

Embodiment 2

[0043] The preparation method of colored magnetic pearlescent pigment comprises the following steps:

[0044] Step S1: Weigh 100g of the pretreated substrate, add 1000ml of distilled water, adjust the pH to 1.9, raise the temperature to 70°C, add titanium tetrachloride solution at a flow rate of 45ml / min, and feed until different colors appear, stop feeding after the feeding is completed Stir for 30 minutes, heat up to 72°C, add alkali to adjust to pH=8.9;

[0045] Step S2: Under the conditions of temperature 72°C and pH=8.9, add 0.2mol / l sodium silicate solution, flow rate 60ml / min, time 1min, stop feeding and stir for 30min, add hydrochloric acid to adjust pH=3.3;

[0046] Step S3: Under the conditions of temperature 72°C and pH=3.3, add ferric chloride solution with a flow rate of 0.7 L / min, stop feeding and stir for 30 minutes after the feeding, and add alkali to adjust the pH to 7.5;

[0047] Step S4: Under the conditions of temperature 75°C and pH=7.5, add the ferrous c...

Embodiment 3

[0058] The preparation method of colored magnetic pearlescent pigment comprises the following steps:

[0059] Step S1: Weigh 100g of the pretreated substrate, add 1000ml of distilled water, adjust the pH to 1.9-2.1, raise the temperature to 80°C, add titanium tetrachloride solution at a flow rate of 45ml / min, and feed until different colors appear. Stop feeding and stir for 30 minutes, raise the temperature to 82°C, add alkali to adjust the pH to 9.2;

[0060] Step S2: Under the conditions of temperature 82°C and pH=9.2, add 0.2mol / l sodium silicate solution, flow rate 60ml / min, time 2min, stop feeding and stir for 30min, add hydrochloric acid to adjust pH=3.5;

[0061] Step S3: Under the conditions of temperature 82°C and pH=3.5, add ferric chloride solution at a flow rate of 0.7 L / min, stop feeding and stir for 30 minutes after the feeding, and add alkali to adjust the pH to 8.0;

[0062] Step S4: Under the conditions of temperature 82°C and pH=8, add the ferrous chloride m...

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Abstract

The invention provides a preparation method of colored magnetic pearlescent pigment, and relates to the technical field of pigment. The method comprises the following steps: weighing 100 g of a pretreated base material, adding 1000 ml of distilled water, adjusting the pH value to 1.9-2.1, heating to 70-80 DEG C, adding a titanium tetrachloride solution until different colors appear, stopping stirring for 30-45 min after addition is finished, heating to 72-82 DEG C, and adding an alkali to adjust the pH value to 8.9-9.2; adding 0.2-0.5 mol / l of a sodium silicate solution, stopping stirring for30-45 minutes, and adding hydrochloric acid to adjust the pH value to 3.3-3.5; adding a ferric trichloride solution, stopping stirring for 30 minutes after addition is finished, and adding alkali to adjust the pH value to 7.5-8.0; and adding a ferrous chloride mixture, stopping feeding when the magnetism is strongest, performing filtration, washing and drying to obtain a finished product. The colored magnetic pearlescent pigment prepared by the preparation method is high in quality and outstanding in stability and has remarkable magnetic conductivity.

Description

technical field [0001] The invention relates to the technical field of pigments, in particular to a preparation method of colorful magnetic pearlescent pigments. Background technique [0002] Pearlescent pigment is a glossy pigment: non-toxic, odorless, acid and alkali resistant, non-flammable, non-explosive, non-conductive, non-migrating, easy to disperse, has high heat resistance and weather resistance, and fully meets strict environmental protection requirements . Pearlescent pigments have the flash effect of metallic pigments and can produce the soft color of natural pearls. As a special effect pigment, pearlescent pigments are increasingly used in many industrial fields due to their unique and elegant luster and soft or shimmering appearance effects caused by different colors and particle sizes. [0003] The current magnetic pearlescent pigment products generally only coat the magnetic particles on the surface of the pearlescent pigment. How to make the product have b...

Claims

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Application Information

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IPC IPC(8): C09C1/62C09C3/06
CPCC09C1/62C09C3/063C09C3/066
Inventor 付中华
Owner 河南凌宝新材料科技有限公司
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