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A kind of carbon black dispersion and its preparation method and application

A dispersion and carbon black technology, applied in the direction of single-component polyester rayon, dyed low-molecular organic compound treatment, fibrous filler, etc. Problems such as poor spinnability of ester, agglomeration of carbon black particles, etc., to achieve good spinnability, improved stability, and good storage stability

Active Publication Date: 2022-05-03
SUZHOU SUNMUN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In addition, in the prior art, the carbon black dispersion is usually directly added to the polyester oligomer before the polycondensation after esterification without preheating; while the temperature of the polyester oligomer is generally above 210°C, due to the relatively large temperature difference When the carbon black dispersion is added, ethylene glycol is prone to instant volatilization and carbon black particles are agglomerated, resulting in poor spinnability and low fiber coloring power of the prepared polyester during spinning. The prepared colored polymer Ester fiber has poor washing and rubbing fastness

Method used

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  • A kind of carbon black dispersion and its preparation method and application
  • A kind of carbon black dispersion and its preparation method and application
  • A kind of carbon black dispersion and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Add carbon black with hydroxyl groups on the surface and p-hydroxybenzoic acid at a mass ratio of 1:0.05, add N,N-dimethylformamide accounting for 15% of the mass of carbon black with hydroxyl groups on the surface, and knead with a kneader after uniform dispersion 45min, obtain modified carbon black;

[0039] Disperse 3 parts of surfactant A by mass and 3 parts of surfactant B1 by mass into 74 parts of ethylene glycol by mass, add 20 parts by mass of modified carbon black, mix well, and use hydrogen Sodium oxide was used to adjust the pH value to 8.0, and the carbon black dispersion was obtained through dispersion, grinding, filtration and defoaming.

Embodiment 2

[0041] Add carbon black with hydroxyl groups on the surface and m-hydroxybenzoic acid at a mass ratio of 1:0.06, add N,N-dimethylformamide accounting for 10% of the mass of carbon black with hydroxyl groups on the surface, and knead with a kneader after uniform dispersion 30min, obtain modified carbon black;

[0042] Disperse 2 parts of surfactant A by mass and 5 parts of surfactant B2 by mass into 63 parts of ethylene glycol, add 30 parts by mass of modified carbon black, mix well, and use hydrogen Potassium oxide is used to adjust the pH value to 7.0, and the carbon black dispersion is obtained through dispersion, grinding, filtration and defoaming.

Embodiment 3

[0044] Add carbon black with hydroxyl groups on the surface and 3,5-dihydroxybenzoic acid with a mass ratio of 1:0.07, add N,N-dimethylformamide accounting for 16% of the carbon black with hydroxyl groups on the surface, and disperse evenly. Knead with a kneader for 40 minutes to obtain modified carbon black.

[0045] The quality is 5 parts of surfactant A, the quality is 4 parts of surfactant B3, dispersed in the quality is 51 parts of ethylene glycol, the addition of quality is 40 parts of modified carbon black, the quality is 0.01 part of 1 , 2-benzisothiazolin-3-one, after fully mixing, adjust the pH value to 9.0 with potassium hydroxide, and obtain a carbon black dispersion through dispersion, grinding, filtration, and defoaming.

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Abstract

The invention discloses a carbon black dispersion and a preparation method thereof. The carbon black dispersion comprises the following components in parts by mass: 10-40 parts of modified carbon black, 2-5 parts of surfactant A, 2-5 parts 1 part of surfactant B, 40-90 parts of liquid dispersion medium, 0-0.1 part of additive; wherein the modified carbon black is obtained by esterification reaction between modified substance C and carbon black containing hydroxyl groups on the surface. The present invention also provides the application of carbon black dispersion in the coloring of polyester fiber stock solution, specifically: preheating the carbon black dispersion to 170-180°C, after the esterification reaction and polycondensation reaction in the production process of polyester fiber pre-added to the polyester oligomer. The carbon black dispersion has good compatibility with polyester, can be stably dispersed in polyester, can improve the spinnability of polyester fiber after coloring, and ensures that polyester fiber has higher elongation at break and breakage Strength and high color fastness to soaping and dry / wet rubbing fastness.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and in particular relates to a carbon black dispersion and a preparation method thereof, as well as the application of the carbon black dispersion in the coloring of polyester fiber stock solution. Background technique [0002] Chemical fiber refers to the fiber with textile properties that is made from natural or synthetic polymer compounds through spinning dope preparation, spinning and post-treatment processes. It is widely used in various aspects of people's clothing, food, housing and transportation. According to different raw materials, chemical fibers are divided into man-made fibers and synthetic fibers. According to the statistics of the China Chemical Fiber Industry Association, the output of chemical fibers in my country in 2019 was 58.27 million tons, of which the output of synthetic fibers was 52.79 million tons, and the output of polyester fibers in synthetic fibers was 47.81...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/56C09C3/08D01F1/04D01F6/92C08H7/00
CPCC09C1/56C09C3/08D01F1/04D01F6/92C08H6/00
Inventor 杜长森徐利伟梁栋陈爽冯淑芹
Owner SUZHOU SUNMUN TECH CO LTD
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