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Carbon black dispersion, and preparation method and application thereof

A dispersion and carbon black technology, applied in the direction of single-component polyester rayon, dyeing low molecular organic compound treatment, adding pigments in spinning solution, etc., can solve the problem of washing resistance and friction resistance of colored polyester fibers Poor spinnability, poor spinnability of polyester, low fiber coloring strength, etc., to achieve good spinnability, improved stability, and low filter press value

Active Publication Date: 2022-01-21
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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  • Carbon black dispersion, and preparation method and application thereof
  • Carbon black dispersion, and preparation method and application thereof
  • Carbon black dispersion, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The surface containing a mass ratio of 1: 0.05 containing a hydroxyl group with a hydroxybenzoic acid, and the addition of 15% N, N-dimethylformamide having a carbon black containing a hydroxyl group containing a hydroxyl group, and is uniformly dispersed. 45min to get modified carbon black;

[0039] The mass is 3 parts of the surfactant A, the mass is 3 parts of the surfactant B1, dispersed into a mass of 74 parts of ethylene glycol, and the mass is 20 parts of modified carbon black, and after mixing, hydrogen The sodium oxide regulates the pH of 8.0, dispersion, ground, filtration, and defoaming to obtain a carbon black dispersion.

Embodiment 2

[0041] The surface containing a mass ratio of 1: 0.06 contains a hydroxybenzoic acid, which is added to the surface containing 10% N, N-dimethylformamide, and the dispersion is uniform, and is kneaded with a kneader. 30min, resulting in modified carbon black;

[0042] The mass is 2 parts of the surfactant A, the mass is 5 parts of the surfactant B2, dispersed into a mass of 63 parts of ethylene glycol, and the mass is 30 parts of modified carbon black, thoroughly mixed, hydrogen The potassium oxide regulates the pH of 7.0, dispersion, ground, filtered, and defoamed to obtain a carbon black dispersion.

Embodiment 3

[0044] The surface containing a mass ratio of 1: 0.07 contains a hydroxyl group with a hydroxyl group, and the surface contains 16% N, N-dimethylformamide, and the dispersion is uniform. Using a kneader for 40 min to obtain modified carbon black.

[0045] The mass is 5 parts of the surfactant A, the mass is 4 parts of the surfactant B3, dispersed into a mass of 51 parts of ethylene glycol, and the mass is 40 parts of modified carbon black and the mass is 0.01 parts. After 2-benzothiazoline-3-ketone, after mixing, the pH is adjusted with a potassium hydroxide having a pH of 9.0, dispersion, ground, filtration, and defoaming to obtain a carbon black dispersion.

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Abstract

The invention discloses a carbon black dispersion and a preparation method thereof. The carbon black dispersion comprises, by mass, 10-40 parts of modified carbon black, 2-5 parts of a surfactant A, 2-5 parts of a surfactant B, 40-90 parts of a liquid dispersion medium and 0-0.1 part of an additive, wherein the modified carbon black is prepared by carrying out esterification reaction on a modified substance C and carbon black of which the surface contains hydroxyl. The invention also provides an application of the carbon black dispersion in polyester fiber stock solution coloring. The application specifically comprises the following steps: preheating the carbon black dispersion to 170-180 DEG C, and adding the carbon black dispersion into a polyester oligomer after an esterification reaction and before a polycondensation reaction in a polyester fiber production process. The carbon black dispersion has good compatibility with polyester, can be stably dispersed in the polyester, can improve the spinnability of the colored polyester fiber, and ensures that the polyester fiber has high elongation at break, high breaking strength, high soaping-resistant color fastness and high dry / wet rubbing fastness.

Description

Technical field [0001] The present invention belongs to the field of fine chemical technology, and more particularly to a carbon black dispersion and a preparation method thereof, and the application of the carbon black dispersion in coloring of polyester fiber. Background technique [0002] Chemical fibers refer to fibers having textile properties prepared by natural or artificial synthesis of polymer compounds, prepared by spinning stock, spinning and post-treatment, are widely used in people's clothing and housing. According to the different raw materials, chemical fibers are divided into artificial fibers and synthetic fibers. According to China Chemical Fiber Industry Association, my country's chemical fiber production is 58.27 million tons in 2019, including 52.79 million tons, and the production of polyester fibers in synthetic fibers is 47.81 million tons, and polyester fibers account for 90% of the synthetic fiber production. The polyester fiber has the characteristics o...

Claims

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Application Information

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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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