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A method for dyeing polyester at room temperature

A polyester, room temperature technology, applied in the field of polyester room temperature dyeing, can solve the problems of large water consumption and energy consumption, and achieve the effect of less water consumption and low dyeing temperature

Active Publication Date: 2022-03-11
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for dyeing polyester at room temperature, which solves the problems of large water consumption and energy consumption in the traditional polyester dyeing process in the prior art, and achieves the purpose of saving water and reducing pollutant discharge

Method used

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  • A method for dyeing polyester at room temperature

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Effect test

Embodiment 1

[0025] A method for dyeing polyester at room temperature, the specific steps are as follows:

[0026] The first step, the alkali weight reduction treatment of the polyester fabric: the polyester fabric is treated at 80°C for 40 minutes at a bath ratio of 10:1, sodium hydroxide 10g / L, accelerator 1631 1 g / L, washed in hot water and cold water , after drying for later use;

[0027] The second step, room temperature dyeing of polyester fabrics: add 1 mmol of trimesic acid to 5 mL of 1M sodium hydroxide, ultrasonically treat for 5 min, control the pH to 7, and obtain solution A; 0.2 g of alkali-reduced polyester The fabric was added to solution A; 2 mmol of ferrous sulfate heptahydrate was added to 20 mL of distilled water, and ultrasonic treatment was performed for 5 min to obtain solution B; the solution B was added dropwise at a rate of 50-60 drops / min to the polyester fabric soaked In the solution A, the reaction was shaken at room temperature for 40 minutes. After the reacti...

Embodiment 2

[0029] A method for dyeing polyester at room temperature, the specific steps are as follows:

[0030] (1) Alkali weight reduction treatment of polyester fabric: The polyester fabric was treated at 80°C for 60 min at a bath ratio of 20:1, sodium hydroxide 15g / L, and accelerator 16311.5 g / L. Wash in hot water, cold water, dry and set aside.

[0031] (2) Room temperature dyeing of polyester fabric: Add 1 mmol of trimesic acid to 5 mL of 1M sodium hydroxide, ultrasonicate for 5 min, control the pH to 6, and obtain solution A; 0.6 g of polyester fabric after alkali reduction Add to solution A; Add 6 mmol ferrous sulfate heptahydrate to 40 mL of distilled water, and ultrasonically treat for 5 min to obtain solution B; Add solution B dropwise to the solution soaked in polyester fabric at a rate of 50-60 drops / min In A, shake the reaction at room temperature for 120 min. After the reaction, the polyester fabric is taken out, washed with water, soaped, washed with water, and dried. T...

Embodiment 3

[0033] A method for dyeing polyester at room temperature, the specific steps are as follows:

[0034] (1) Alkali weight reduction treatment of polyester fabric: The polyester fabric was treated at 80°C for 50 minutes at a bath ratio of 15:1, sodium hydroxide 10g / L, and accelerator 16311 g / L. Wash in hot water, cold water, dry and set aside.

[0035] (2) Room temperature dyeing of polyester fabric: Add 2 mmol of trimesic acid to 10 mL of 1M sodium hydroxide, ultrasonicate for 5 min, and control the pH to 8 to obtain solution A; 0.3 g of polyester fabric after alkali reduction Add to solution A; add 6 mmol ferrous sulfate heptahydrate to 40 mL of distilled water, and ultrasonically treat for 10 min to obtain solution B; add solution B dropwise to the solution soaked in polyester fabric at a rate of 50-60 drops / min In A, shake and react at room temperature for 90 minutes. After the reaction, the polyester fabric is taken out, washed with water, soaped, washed with water, and dri...

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Abstract

The invention discloses a method for dyeing polyester at room temperature. The polyester fiber is treated at 80-100°C with a liquor ratio of 10-20:1, sodium hydroxide of 10-15g / L and accelerator 1631 of 1-1.5 g / L. 40-60 min, wash with hot water, cold water, dry and set aside; add 1-4 mmol of trimesic acid into 5-25 mL of 1M sodium hydroxide, ultrasonic treatment, control pH 6-8, and obtain solution A; Add 0.2~0.6 g of alkali-reduced polyester to solution A; add 2~6 mmol of ferrous sulfate heptahydrate into 20~40 mL of distilled water, and obtain solution B by ultrasonic treatment; In solution A, the polyester fabric was taken out after the shaking reaction at room temperature, washed with water, soaped, washed with water, and dried. This method does not use disperse dyes, and polyester can be dyed at room temperature.

Description

technical field [0001] The invention relates to the technical field of polyester dyeing, in particular to a method for dyeing polyester at room temperature. Background technique [0002] Among synthetic fibers, polyester is favored by people because of its high strength, good wear resistance, easy washing and quick drying, etc. It is widely used in clothing, automobiles, filtration, packaging and other fields. Conventional polyester is usually dyed with disperse dyes. The commonly used dyeing methods include high temperature and high pressure dyeing, heat-melt dyeing and carrier dyeing. The disperse dyes used in dyeing and the auxiliary agents used in conjunction with them may cause some harmful effects on humans and the environment due to the possible presence of toxic compounds. In addition, the temperature required for dyeing is high and the energy consumption is large. Therefore, people are constantly looking for cleaner methods to replace traditional dyeing methods. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/673D06P3/52
CPCD06P1/673D06P3/52
Inventor 王春梅王静顾振宇徐康景
Owner NANTONG UNIVERSITY
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