Method for preparing mica titanium nacreous material

A pearlescent pigment, mica titanium technology, applied in inorganic pigment processing, chemical instruments and methods, fibrous fillers, etc., can solve the problems of extremely high pH control requirements, high pH value of the reaction solution, and general product quality, etc. Simple control of difficulty, no sintering phenomenon, and the effect of improving the quality of prepared products

Inactive Publication Date: 2008-08-06
北京首纳东方科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the mica titanium pearlescent pigment is prepared by adding alkali and neutralizing method, the pH value control is extremely high, and the partial pH value in the reaction solution is prone to be too high, resulting in white turbidity.
Using the urea uniform precipitation method, although it is not necessary to control the pH value of the reaction, a large amount of urea needs to be added, which increases the production cost and the product quality is also average

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) prepare raw material mica powder 100g, mica powder is the muscovite powder that the diameter-thickness ratio by wet stripping is 58, particle diameter is 100 microns;

[0026] (2) Add 50g of urea continuously and evenly into 200mL of titanium salt solution, the titanium salt is made of TiO 2 Calculated as 33g, forming a metal salt mixed solution containing urea;

[0027] (3) Mix 100 g of mica powder in step (1) with 500 g of deionized water at room temperature, then stir at a speed of 100 rpm, and heat to 90 degrees Celsius, then add 200 g of urea, that is, urea and mica The powder dosage ratio is 2:1 and urea is added at one time; after reaching the desired reaction temperature, maintain the reaction temperature and stirring speed for 10 minutes, then add the metal salt mixture containing urea formed in step (2), and mix the metal salt After all the solution is added, continue to maintain the reaction temperature and hydrolyze for 30 minutes. After the hydrolysis ...

Embodiment 2

[0031] (1) prepare raw material mica powder 100g, mica powder is the muscovite powder that the diameter-thickness ratio by wet method stripping is 70, particle diameter is 200 microns;

[0032] (2) Add urea 30g continuously and evenly into the mixed solution formed by 100mL of titanium salt solution and 100mL of tin salt solution, the quality of titanium salt is expressed as TiO 2 Calculated as 20g, tin salt as SnO 2 Calculated as 1g, forming a metal salt mixture containing urea;

[0033] (3) Mix 100 g of mica powder in step (1) with 500 g of deionized water at room temperature, then stir at a speed of 250 rpm, and heat to 70 degrees Celsius, then add 150 g of urea, that is, urea and mica The powder dosage ratio is 1.5:1 and urea is added at one time; after reaching the required reaction temperature, maintain the reaction temperature and stirring speed for 15 minutes, then add the metal salt mixed solution containing urea formed in step (2), and the metal salt is mixed After...

Embodiment 3

[0037] (1) prepare raw material mica powder 200g, mica powder is the muscovite powder that the diameter-thickness ratio by wet method stripping is 60, particle diameter is 20 microns;

[0038] (2) 70g of urea is continuously and uniformly added to the mixed solution formed by 200mL of titanium salt solution, 200mL of tin salt solution and 200mL of iron salt solution, the quality of titanium salt is expressed as TiO 2 Calculated as 50g, tin salt as SnO 2 Calculated as 2g, iron salt as Fe 2 o 3 Calculated as 12.5g, forming a metal salt mixed solution containing urea;

[0039] (3) Mix 200 g of mica powder in step (1) with 1200 g of deionized water at room temperature, then stir at a speed of 300 rpm, and heat to 80 degrees Celsius, then add 600 g of urea, that is, urea and mica The powder dosage ratio is 3: 1, and urea is one-time addition; After reaching the required reaction temperature, maintain the reaction temperature and stirring speed for 20 minutes, then add the metal ...

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Abstract

The invention belongs to the pearlescent pigment preparation process field, particularly relating to a preparation process of mica titanium pearlescent pigment. The process of the invention comprises adopting titanium tetrachloride solution which is partially transformed into titanyl sulfate, ferric trichloride solution and ferrous chloride solution or mixed solution of titanium salt and iron salt as deposition agent, adopting carbamide as neutralizing agent, wherein carbamide adopts the way of filling in batch, and hydrolyzing titanium salt, iron salt or mixed salt of titanium salt and iron salt to prepare mica pearlescent pigment. The process of the invention has the advantages of simple making art and easy operation, and the mica pearlescent pigment product which is prepared has even and compact titanium dioxide, di-iron trioxide film structure on the surface of the product, silver white product has high whiteness and strong pearlescent effect, and neon or color product has saturated color and strong pearlescent effect.

Description

technical field [0001] The invention belongs to the technical field of pearlescent pigment preparation, and in particular relates to a preparation method of mica titanium pearlescent pigment. Background technique [0002] Mica-based pearlescent pigment refers to a new type of high-grade pearlescent pigment that uniformly coats one or several layers of transparent nano-scale metal oxide films on the surface of flake mica by chemical methods, and uses light reflection and interference phenomena to present a soft pearlescent color. technical material. Mica-based pearlescent pigments are not only non-toxic, light-resistant, heat-resistant, and chemically stable, but also have a series of excellent optical properties. has been widely used. The industrial scale of foreign pearlescent pigments began in the early 1970s, and its research, application and market development have been extremely active in recent years. Pearlescent pigment manufacturers represented by Engelhard Corpor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C3/06C09C1/36
Inventor 咸才军任定高孔志平邢颖
Owner 北京首纳东方科技有限公司
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