Modifying and dyeing process of cotton fabric

Abstract

The invention relates to a modifying and dyeing process of a cotton fabric. The process comprises the following steps: (1) modifying the cotton fabric, namely placing the cotton fabric in a modifying liquid containing a modifier and sodium hydroxide with the bath ratio of 1:20; dipping at a certain temperature for a certain time; taking out the fabric; flushing the fabric by running water for 5-6 minutes; carrying out acid washing on the fabric; then, washing the fabric till the fabric is neutral; naturally airing the fabric; (2) dyeing, namely preparing dye liquor by a certain amount of dyes; heating the dye liquor to 50 DEG C and placing the cotton fabric in the dye liquor; adjusting the pH; heating at a speed at 2 DEG C / minute to a certain dyeing temperature; maintaining the constant temperature; dyeing for a certain time, then cooling to the room temperature; washing by water and airing. The process provided by the invention has the beneficial effects that the cationic modification is carried out on the cotton fabric, so that the physical property and the chemical property of the cotton fiber are changed, thereby further changing the dyeing property of the cotton fabric; finally, the cotton fabric blended with wool fibers is dyed by using one bath process, so that the dyeing process flow is shortened, and the production efficiency is improved.

Description

technical field

[0001] The invention belongs to the technical field of textile dyeing and finishing, and in particular relates to a modified dyeing process of cotton fabrics. Background technique

[0002] With the development of knitwear to the diversity of raw materials, people are more and more interested in wool and other fiber blended products. These textile products combine the advantages of two or more fibers and have unique product styles. Cotton wool blended products are based on Its characteristic style has huge market prospects. Wool has excellent elasticity and thermal conductivity. Compared with cotton or cotton and chemical fiber blended fabrics, cotton-wool blended and interwoven fabrics are warmer and more comfortable. They not only have good texture and appearance, but also have good cost performance. Cotton / wool blended products The characteristics of the two fibers can be integrated into one, so that the product can obtain a unique style.

[0003] However...

Examples

Embodiment 1

[0020] A modified dyeing process for cotton fabrics, comprising the steps of:

[0021] (1) Cotton fabric modification: put the cotton fabric into the modifying solution containing 30g / L 3-chloro-2-hydroxypropyltrimethylammonium chloride modifier and 10g / L sodium hydroxide, bath Ratio 1:20, immerse at 60°C for 40 minutes, take it out, rinse with running water for 5-6 minutes, pickle, then wash with water until neutral, and dry naturally;

[0022] (2) Dyeing: Use 1% (owf) dye to prepare a dye solution, put the cotton fabric into the dye solution when the temperature rises to 50°C, adjust the pH=5, raise the temperature at a rate of 2°C / min, and keep it at a constant temperature to 80°C , dyed for 60 minutes, then cooled to room temperature, washed with water, and dried.

Embodiment 2

[0024] A modified dyeing process for cotton fabrics, comprising the steps of:

[0025] (1) Cotton fabric modification: put the cotton fabric into the modifying solution containing 40g / L 3-chloro-2-hydroxypropyltrimethylammonium chloride modifier and 30g / L sodium hydroxide, bath Ratio 1:20, immerse at 40°C for 50 minutes, take it out, rinse with running water for 5-6 minutes, pickle, then wash with water until neutral, and dry naturally;

[0026] (2) Dyeing: use 2% (owf) dye to prepare dye liquor, put the cotton fabric into the dye liquor when the temperature rises to 50°C, adjust the pH=8, raise the temperature at a rate of 2°C / min, and keep the temperature at 90°C , after 40min dyeing, then cooled to room temperature, washed with water, and dried.

Embodiment 3

[0028] A modified dyeing process for cotton fabrics, comprising the steps of:

[0029] (1) Cotton fabric modification: put the cotton fabric into the modifying solution containing 50g / L 3-chloro-2-hydroxypropyltrimethylammonium chloride modifier and 20g / L sodium hydroxide, bath Ratio 1:20, immerse at 50°C for 60 minutes, take it out, rinse with running water for 5-6 minutes, pickle, then wash with water until neutral, and dry naturally;

[0030] (2) Dyeing: use 3% (owf) dye to prepare dyeing solution, put the cotton fabric into the dyeing solution when the temperature rises to 50°C, adjust the pH=9, raise the temperature at a rate of 2°C / min, and keep the temperature at 100°C , dyed for 30 minutes, then cooled to room temperature, washed with water, and dried.

technical field

[0001] The invention belongs to the technical field of textile dyeing and finishing, and in particular relates to a modified dyeing process of cotton fabrics. Background technique

[0002] With the development of knitwear to the diversity of raw materials, people are more and more interested in wool and other fiber blended products. These textile products combine the advantages of two or more fibers and have unique product styles. Cotton wool blended products are based on Its characteristic style has huge market prospects. Wool has excellent elasticity and thermal conductivity. Compared with cotton or cotton and chemical fiber blended fabrics, cotton-wool blended and interwoven fabrics are warmer and more comfortable. They not only have good texture and appearance, but also have good cost performance. Cotton / wool blended products The characteristics of the two fibers can be integrated into one, so that the product can obtain a unique style.

[0003] However...

Examples

Embodiment 1

[0020] A modified dyeing process for cotton fabrics, comprising the steps of:

[0021] (1) Cotton fabric modification: put the cotton fabric into the modifying solution containing 30g / L 3-chloro-2-hydroxypropyltrimethylammonium chloride modifier and 10g / L sodium hydroxide, bath Ratio 1:20, immerse at 60°C for 40 minutes, take it out, rinse with running water for 5-6 minutes, pickle, then wash with water until neutral, and dry naturally;

[0022] (2) Dyeing: Use 1% (owf) dye to prepare a dye solution, put the cotton fabric into the dye solution when the temperature rises to 50°C, adjust the pH=5, raise the temperature at a rate of 2°C / min, and keep it at a constant temperature to 80°C , dyed for 60 minutes, then cooled to room temperature, washed with water, and dried.

Embodiment 2

[0024] A modified dyeing process for cotton fabrics, comprising the steps of:

[0025] (1) Cotton fabric modification: put the cotton fabric into the modifying solution containing 40g / L 3-chloro-2-hydroxypropyltrimethylammonium chloride modifier and 30g / L sodium hydroxide, bath Ratio 1:20, immerse at 40°C for 50 minutes, take it out, rinse with running water for 5-6 minutes, pickle, then wash with water until neutral, and dry naturally;

[0026] (2) Dyeing: use 2% (owf) dye to prepare dye liquor, put the cotton fabric into the dye liquor when the temperature rises to 50°C, adjust the pH=8, raise the temperature at a rate of 2°C / min, and keep the temperature at 90°C , after 40min dyeing, then cooled to room temperature, washed with water, and dried.

Embodiment 3

[0028] A modified dyeing process for cotton fabrics, comprising the steps of:

[0029] (1) Cotton fabric modification: put the cotton fabric into the modifying solution containing 50g / L 3-chloro-2-hydroxypropyltrimethylammonium chloride modifier and 20g / L sodium hydroxide, bath Ratio 1:20, immerse at 50°C for 60 minutes, take it out, rinse with running water for 5-6 minutes, pickle, then wash with water until neutral, and dry naturally;

[0030] (2) Dyeing: use 3% (owf) dye to prepare dyeing solution, put the cotton fabric into the dyeing solution when the temperature rises to 50°C, adjust the pH=9, raise the temperature at a rate of 2°C / min, and keep the temperature at 100°C , dyed for 30 minutes, then cooled to room temperature, washed with water, and dried.