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Preparation method of carbon black water-based color paste with high solid content and high tinting strength

A high solid content, water-based color paste technology, applied in the direction of pigment paste, etc., can solve the problems of carbon black water-based color paste tinting strength, stability and dilution resistance can not meet the requirements and other problems, to increase the dimensional stability and stability Good, small particle size distribution effect

Active Publication Date: 2020-12-11
SUZHOU BAOHUA CARBON BLACK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the tinting strength, stability and dilution resistance of the existing carbon black water-based color pastes on the market are far from meeting the requirements, so further testing is required by R&D personnel to improve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Pre-disperse 26.25g of dispersant, 2.1g of wetting agent and 166.35g of deionized water for 20 minutes, then add 0.3g of defoamer for defoaming, and then add 105g of carbon black A species [wherein the nitrogen adsorption of carbon black A species The ratio of specific surface area to DBP oil absorption value is 2.28], grinding media glass beads 450g, the rotating speed of grinding motor is: 1500r / min, after grinding for 4 hours, take a sample, and the coating film test is used as a standard sample.

Embodiment 2

[0028] Pre-disperse 26.25g of dispersant, 2.1g of wetting agent and 166.45g of deionized water for 20 minutes, then add 0.3g of defoamer for defoaming, and then add 105g of carbon black B species [the nitrogen adsorption of carbon black B species The ratio of the specific surface area to the DBP oil absorption value is 1.01], the grinding media glass beads are 450g, the speed of the grinding motor is: 1500r / min, the sample is taken after grinding for 4 hours, and the colorimeter of HUNTERLAN is used to compare with the standard sample. The standard sample is about 6% smaller.

Embodiment 3

[0030] Pre-disperse 26.25g of dispersant, 2.1g of wetting agent and 166.45g of deionized water for 20 minutes, then add 0.3g of defoamer for defoaming, and then add 105g of carbon black C [wherein the nitrogen adsorption of carbon black C The ratio of the specific surface area to the DBP oil absorption value is 0.9], the grinding media glass beads are 450g, the speed of the grinding motor is: 1500r / min, the samples are taken after grinding for 4 hours, and the colorimeter of HUNTERLAN is compared with the standard sample. The standard sample is about 5% smaller.

[0031] From the results of Examples 1-3, it can be seen that when the ratio of the nitrogen adsorption specific surface area of ​​carbon black to the DBP oil absorption value is 2-2.28, the tinting strength value is the highest.

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Abstract

The invention discloses a high solid content and tinctorial strength carbon black aqueous pigment paste preparation method, which comprises: respectively weighing a dispersant, a wetting agent and deionized water according to a mass percentage ratio, pre-dispersing, adding a defoaming agent, defoaming, adding carbon black, placing into grinding equipment, and grinding, wherein a ratio of the nitrogen adsorption specific surface area to the DBP oil absorption value of the carbon black is 0.9-2.28, the adding amount of the dispersant is 20-40% of the mass of the carbon black, the adding amount of the wetting agent is 1-3% of the mass of the carbon black, the adding amount of the defoaming agent is 0.1-0.2% of the total amount of the solution, the rotation speed of the grinding motor of the grinding equipment is 1000-2000 r / min, the grinding time is 2-4 h, and the maximum particle size of the prepared carbon black aqueous pigment paste does not exceed 10 [mu]m. According to the present invention, the prepared carbon black water washing pigment paste has characteristics of small particle size distribution, increase of the space stability of the carbon black particles in the aqueous solution, high solid content, strong tinctorial strength, and good stability; and the preparation method has characteristics of simple operation, low cost, low consumption, and easy industrial production.

Description

technical field [0001] The invention relates to a preparation method of a carbon black water-based color paste, in particular to a preparation method of a carbon black water-based color paste with high solid content and high tinting strength, and belongs to the technical field of pigment color paste preparation. Background technique [0002] Color paste is a kind of pigment concentrate, that is, the pigment dispersion system is developed by using different pigments, through the surface treatment and surface coating of pigments, and through strict processing technology. Color paste can be used for coloring of coatings, inks, inks, etc. According to the different solvents used, the color paste is divided into water-based color paste, oil-based color paste, water-oil general color paste, etc. The good environmental protection of water-based products makes its application continuously expand, and accordingly continuously promotes the development of water-based colorants. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D17/00
CPCC09D17/005
Inventor 吴云枫
Owner SUZHOU BAOHUA CARBON BLACK
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