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Electro-conductive pearlescent pigment

A pearlescent pigment and conductive layer technology, applied in the field of inorganic pigments, can solve the problems of poor acid and alkali resistance, flammability, and high cost of metal powder, and achieve the effect of good conductivity and good weather resistance

Inactive Publication Date: 2014-04-30
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] Traditional conductive pigments are metal powders, such as gold, silver, copper, etc.; there are also non-metallic powders such as carbon black and graphite.
However, metal powders are expensive, poor in acid and alkali resistance, and poor in dispersibility in coatings. When making metal powders, very fine metal powders are flammable and explosive, and they are also very dangerous.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1. Take 30g of 5-15μm mica powder and 1000mL of deionized water, put them into the reaction kettle, stir evenly to make a suspension solution, adjust the pH value to 1.0, and keep the temperature in the reaction kettle at 75±5℃;

[0016] 2. Take 80g / L SnCl 4 Solution 700mL, SbCl 3 6.5g was added to 80mL of 30% HCl solution to prepare a mixed solution of tin salt and antimony salt, and the mixed solution was added to the above reaction kettle at a uniform speed under stirring conditions, and the pH value in the reaction kettle was kept at 1.0~1.5, continue to stir for 20 minutes after adding the mixed solution, adjust the pH to 7.0, stir for 20 minutes, discharge, filter, wash, dry at 120°C, and calcined at 600°C for 1 hour to obtain a translucent conductive pearlescent pigment , its composition is mica 45.1wt%, SnO 2 / Sb 2 o 3 54.9wt%, resistivity 9Ω·cm.

Embodiment 2

[0018] 1. Take 30g of 5-15μm mica powder and 1000mL of deionized water, put them into the reaction kettle, stir evenly to make a suspension solution, adjust the pH value to 2.0, and keep the temperature in the reaction kettle at 75±5℃;

[0019] 2. Take 250g / L TiCl 4 Add 80mL of the solution to the reaction kettle at a constant speed under stirring. During this process, keep the pH value at 1.8-2.2, and continue to stir for 20 minutes after the addition is complete;

[0020] 3. Take 80g / L of SnCl 4 Solution 700mL, SbCl 3 6.5g, add 60mL of 30% HCL solution to prepare a mixed solution of tin salt and antimony salt, and add the mixed solution into the reaction kettle at a uniform speed under stirring conditions, and keep the pH value in the reaction kettle at 1.3~1.7 during the process , continue to stir for 20 minutes after adding the mixed solution, adjust the pH to 7.0, discharge the material after stirring for 20 minutes, filter, wash, dry at 120°C, and calcined at 600°C fo...

Embodiment 3

[0022] 1. The material particles in the sedimentation tank are large and small. Except for some mica, there are scattered semi-finished products. After being ground by the colloid mill, the products are classified. The larger particles can be returned to the colloid mill for grinding to obtain smaller particles. Mica particles with a particle size (about 5 microns) are used as the matrix material. Take 10g of mica with relatively fine particle size and 800mL of deionized water, put it into the reaction kettle, stir evenly to make a suspension solution, adjust the pH value to 2.0, and keep the temperature in the reaction kettle at 75±5°C;

[0023] 2. Take 250g / L TiCl 4 Add 80mL of the solution to the reaction kettle at a constant speed under stirring. During this process, keep the pH value at 1.8~2.0, and continue to stir for 20 minutes after the addition;

[0024] 3. Take 80g / L of SnCl 4 Solution 500mL, SbCl 3 5g, add 60mL of 30% HCL solution to prepare a mixed solution of...

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Abstract

The invention discloses an electro-conductive pearlescent pigment. Mica is used as a substrate, and the surface of the substrate is coated with an electro-conductive layer of which the mass is 45-60 percent of that of the electro-conductive pearlescent pigment, wherein the electro-conductive layer is a mixture of tin dioxide and antimonous oxide. A titanium dioxide layer also can be arranged between the surface of the substrate and the electro-conductive layer. Compared with an existing electro-conductive power body, by fully utilizing fine mica residue resources generated by the existing pearlescent pigments, the electro-conductive pearlescent pigment disclosed by the invention can be regulated to be in a light color or to be semitransparent through the titanium dioxide layer, has certain glossiness, is quite beneficial for subsequent color blending, and simultaneously has good weather resistance, acid and alkaline resistance, incombustibility, good electro-conductivity and electrical resistivity being 5-20 ohm.cm.

Description

technical field [0001] The invention belongs to the field of inorganic pigments, in particular to a conductive pearlescent pigment. Background technique [0002] Pearlescent pigment is an extremely beautiful pigment with pearl luster and metallic luster. It is composed of one or several thin layers of metal oxides coated on the surface of smooth and transparent mica. Different thicknesses can produce different pearlescent effects. It has excellent characteristics such as non-toxic, non-conductive, heat-resistant, light-resistant, and chemical-resistant, so it has been developed rapidly. Therefore, it is widely used in coatings, plastics, leather, rubber, ink, Paper printing, textile printing and dyeing, cosmetics and other fields. [0003] During the production process of pearlescent pigments, a certain proportion of mica with fine particle size and poor diameter-thickness ratio will be produced. However, the smaller the diameter-thickness ratio, the worse the gloss of the ...

Claims

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Application Information

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IPC IPC(8): C09C1/40C09C3/06
Inventor 郭俊怀宋晓丽谭丽颖许田杰
Owner 河北欧克新型材料股份有限公司
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