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Preparation method of blue pearlescent pigment based on ultramarine pigment

A technology of pearlescent pigments and cyan pigments, applied in the field of materials, can solve problems such as irregular shapes and inability to ensure the compactness of the coating layer

Active Publication Date: 2021-07-06
JIANGSU BEILIDE NOVEL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common structure of ultramarine is sodalite (SOD). Although the size can be processed to the nanometer level, the shape is irregular and the compactness of the coating layer cannot be guaranteed.
[0004] In the prior art, there is no report that ultramarine blue pigments are used in the preparation of blue pearlescent pigments instead of cobalt blue, iron blue and other metallic colors

Method used

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  • Preparation method of blue pearlescent pigment based on ultramarine pigment
  • Preparation method of blue pearlescent pigment based on ultramarine pigment
  • Preparation method of blue pearlescent pigment based on ultramarine pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1 Preparation of nano ultramarine particles.

[0032] Take 1.23g of sodium aluminate, 15g of water, 2g of sodium hydroxide, and 2.25g of colloidal silica and add in order to mix. The synthetic solution is stirred and dynamically aged for 20 hours at room temperature, then transferred to a reaction kettle and heated at 80°C for 6 hours, and the product is washed until the pH2 S 3 After immersing in aqueous solution (30%) for 22 hours, dry at 120°C; put the dried solid in a crucible, place it in an atmosphere furnace, pass in nitrogen for 30 minutes, heat up to 600°C at a rate of 5°C / min and calcinate for 1 hour , after cooling to room temperature, air was introduced for 30 min, the temperature was raised to 350 °C at a rate of 10 °C / min, and air was calcined for 2 h, then cooled to room temperature to obtain a blue pigment cake. The pigment cake is washed with water for several times, filtered, dried and ground to obtain a nanoscale blue sample with a uniform par...

Embodiment 2

[0036] A kind of blue pearlescent pigment based on ultramarine blue pigment, its specific preparation process is as follows:

[0037] Take 1g nano ultramarine particles, 25g ethanol, 4.5g ammonia water and mixed zirconia beads with different particle sizes in a 100mL ball mill jar, add 1g silicone-oxygen coupling agent KH-560 to it at the same time, seal the jar and place it in a planetary ball mill During the reaction at 400rpm rotating speed for 4h, the ultramarine granules modified by KH-560, 0.3g mica powder and 30g DMF were obtained after finishing with ethanol centrifugal washing, drying and grinding to In a 100mL three-necked flask, the reaction was stirred at 130°C for 4h. After the reaction is finished, a cake-like product is obtained, and then a powder mica-ultramarine compound is obtained after further conventional ultrasonication, washing, drying and grinding. Its SEM-EDX mapping such as Image 6 as shown, Image 6 On the middle mica sheet, the element distribut...

Embodiment 3

[0047] A kind of blue pearlescent pigment based on ultramarine blue pigment, its specific preparation process is as follows:

[0048] Take 1g nano ultramarine particles, 25g ethanol, 4.5g ammonia water and mixed zirconia beads with different particle sizes in a 100mL ball mill jar, add 1g silicone-oxygen coupling agent KH-560 to it at the same time, seal the jar and place it in a planetary ball mill During the reaction at 400rpm rotating speed for 4h, after the end, the ultramarine granules modified by KH-560 were obtained by centrifugal washing with ethanol, drying and grinding; the ultramarine granules modified by 0.9g KH-560, 0.3g mica powder and 30g DMF were placed in In a 100mL three-necked flask, the reaction was stirred at 130°C for 4h. After the reaction, the sample was processed by ultrasonication, washing, drying, grinding, etc. to obtain the mica-ultramarine complex. Figure 7 Appears near 600nm and belongs to S 3 - The peak in the 400-500nm wavelength range has ...

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Abstract

The invention discloses a preparation method of a blue pearlescent pigment based on an ultramarine pigment, which is characterized in that the ultramarine pigment with a nanoscale LTA structure with cubic morphology is used as a raw material, KH-560 is used as an intermediate, ultramarine and mica are connected through chemical bonds, single-layer assembly of ultramarine particles on the surface of the mica is realized, and the blue pearlescent pigment is obtained. Compared with cobalt blue, iron blue and other metal colors, the blue pearlescent pigment prepared by the preparation method disclosed by the invention uses ultramarine as a raw material, is more economical and environment-friendly, has ideal blue and pearlescent effects, and has better mechanical strength of a chemical bond for connecting the two materials.

Description

technical field [0001] The invention belongs to the field of materials, in particular to a method for preparing blue pearlescent pigments based on ultramarine blue pigments. Background technique [0002] Mica, a hydrous potassium aluminosilicate mineral with a layered structure, is used as a raw material for pearlescent pigments due to its angle-dependent optical and pearlescent color effects. In recent years, mica-based pearlescent pigments have attracted much attention due to their wide applications in optical filters, cosmetics, plastics, inks, pigments, ceramics, and construction materials. Mica-based pearlescent pigments are usually prepared by depositing single or multilayer metal oxides on a mica substrate followed by calcination. By controlling the thickness and arrangement sequence of the composite oxide particle layer, interference colors such as silver, gold, red, purple, blue and green can be displayed. Pearlescent pigments with different colors are mainly made...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/00C09C1/40C09C3/06C09C3/12
CPCC09C1/0015C09C3/06C09C3/12C01P2006/62C01P2006/63C01P2006/64
Inventor 陈洪龄沈斐
Owner JIANGSU BEILIDE NOVEL MATERIALS
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