阅读说明：本技术 一种蛋白纤维棉混纺织物的染色方法 (Dyeing method of protein fiber cotton blended fabric ) 是由 王冬 于 2020-11-11 设计创作，主要内容包括：本发明公开了一种蛋白纤维棉混纺织物的染色方法,属于纺染面料领域。本发明的一种蛋白纤维棉混纺织物的染色方法,步骤如下：将棉纤维通过氢氧化钠溶液预处理,水洗至中性、烘干；将蛋白纤通过弱酸性防染剂预处理,烘干；将预处理后的棉纤维与预处理后的蛋白纤维经过清棉和梳棉工序后混合并条,通过粗纱机、细纱机得到蛋白纤维棉混纺织物；将上述蛋白纤维棉混纺织物、中性染料、促染剂、固色剂、放入盛有水的恒温水浴锅中染色固色后经水洗、皂洗烘干得染色的蛋白纤维棉混纺织物。本发明提高混纺织物的同色性。(The invention discloses a dyeing method of protein fiber cotton blended fabric, belonging to the field of fabric spinning and dyeing. The invention relates to a dyeing method of protein fiber cotton blended fabric, which comprises the following steps: pretreating cotton fibers by using a sodium hydroxide solution, washing the cotton fibers to be neutral, and drying the cotton fibers; pretreating protein fibers by a weak acid dye-proofing agent, and drying; mixing and drawing the pretreated cotton fibers and the pretreated protein fibers after the processes of cotton picking and cotton carding, and obtaining the protein fiber cotton blended fabric through a roving frame and a spinning frame; and putting the protein fiber cotton blended fabric, neutral dye, accelerating agent and color fixing agent into a constant-temperature water bath pot filled with water for dyeing and color fixing, and then washing, soaping and drying to obtain the dyed protein fiber cotton blended fabric. The invention improves the homochromatism of the blended fabric.)

1. A dyeing method of protein fiber cotton blended fabric is characterized in that: the method comprises the following steps:

step one, pretreating cotton fibers by using a sodium hydroxide solution, washing the cotton fibers to be neutral, and drying the cotton fibers; pretreating protein fibers by a weak acid dye-proofing agent, and drying;

step two, mixing and drawing the pretreated cotton fibers and the pretreated protein fibers after the processes of cotton cleaning and cotton carding, and obtaining the protein fiber cotton blended fabric through a roving frame and a spinning frame;

and step three, putting the protein fiber cotton blended fabric, neutral dye, accelerating agent and color fixing agent into a constant-temperature water bath pot filled with water for dyeing and color fixing, and then washing, soaping and drying to obtain the dyed protein fiber cotton blended fabric.

2. The method for dyeing protein fiber cotton blended fabric according to claim 1, characterized in that:

the accelerating agent is sodium chloride, and the color fixing agent is sodium carbonate.

3. The method for dyeing protein fiber cotton blended fabric according to claim 2, characterized in that: the dyeing and color fixing in the third step comprises the following specific steps: adding the protein fiber cotton blended fabric, the neutral fuel and sodium chloride into a constant-temperature water bath kettle containing water, keeping the temperature for 20-30 min at the bath ratio of 1: 40-1: 45 and at the temperature of 45-55 ℃, heating to 65-70 ℃ at the temperature of 1.5 ℃ per minute, adding sodium carbonate, and keeping the temperature for 40-45 min.

4. The method for dyeing protein fiber cotton blended fabric according to claim 3, characterized in that: the mass fraction of the neutral dye relative to the fabric is 1% (o.w.f).

5. The method for dyeing protein fiber cotton blended fabric according to claim 4, characterized in that: the concrete steps of water washing, soaping and drying in the third step are as follows: washing the dyed protein fiber cotton blended fabric with hot water, reducing the temperature to 45-55 ℃, adding a soaping agent, quickly heating to 70-80 ℃, keeping the temperature for 10min, washing with water at 60-70 ℃ and drying.

6. The method for dyeing protein fiber cotton blended fabric according to claim 5, characterized in that: blending ratio of the cotton fiber after pretreatment and the protein fiber after pretreatment in the second step is 82: 18-77: 23.

7. the method for dyeing protein fiber cotton blended fabric according to claim 6, characterized in that: in step one, cotton fibers are pretreated by a 20% sodium hydroxide solution.

Technical Field

The invention belongs to the field of spin-dyed fabrics, and particularly relates to a dyeing method of a protein fiber cotton blended fabric.

Background

Protein fiber is green fiber which is not frequently used in industry, and the industrial utilization means and method for sorghum fiber are less. The sorghum fiber can be blended with the cotton fiber, so that the obtained blended fabric has the advantages of the two fibers, but the difference of the performances of the two fibers makes the dyeing processing of the blended fabric complicated, and the homochromatic property of the sorghum fiber-cotton blended fabric is poor by the traditional dyeing process.

Disclosure of Invention

1. Technical problem to be solved by the invention

The invention mainly solves the technical problem of providing a dyeing method of protein fiber cotton blended fabric, aiming at improving the homochromatism of the blended fabric.

2. Technical scheme

The invention relates to a dyeing method of protein fiber cotton blended fabric, which is characterized by comprising the following steps: the method comprises the following steps:

step one, pretreating cotton fibers by using a sodium hydroxide solution, washing the cotton fibers to be neutral, and drying the cotton fibers; pretreating protein fibers by a weak acid dye-proofing agent, and drying;

step two, mixing and drawing the pretreated cotton fibers and the pretreated protein fibers after the processes of cotton cleaning and cotton carding, and obtaining the protein fiber cotton blended fabric through a roving frame and a spinning frame;

and step three, putting the protein fiber cotton blended fabric, neutral dye, accelerating agent and color fixing agent into a constant-temperature water bath pot filled with water for dyeing and color fixing, and then washing, soaping and drying to obtain the dyed protein fiber cotton blended fabric.

As a further improvement of the invention, the accelerating agent is sodium chloride, and the color fixing agent is sodium carbonate.

As a further improvement of the invention, the dyeing and color fixing in the third step comprises the following specific steps: adding the protein fiber cotton blended fabric, the neutral fuel and sodium chloride into a constant-temperature water bath kettle containing water, keeping the temperature for 20-30 min at the bath ratio of 1: 40-1: 45 and at the temperature of 45-55 ℃, heating to 65-70 ℃ at the temperature of 1.5 ℃ per minute, adding sodium carbonate, and keeping the temperature for 40-45 min.

As a further improvement of the invention, the mass fraction of the neutral dye relative to the fabric is 1% (o.w.f).

As a further improvement of the invention, the concrete steps of water washing, soaping and drying in the third step are as follows: washing the dyed protein fiber cotton blended fabric with hot water, reducing the temperature to 45-55 ℃, adding a soaping agent, quickly heating to 70-80 ℃, keeping the temperature for 10min, washing with water at 60-70 ℃ and drying.

As a further improvement of the invention, the blending ratio of the cotton fiber after pretreatment and the protein fiber after pretreatment in the step two is 82: 18-77: 23.

as a further development of the invention, in step one the cotton fibers are pretreated with a 20% sodium hydroxide solution.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:

(1) the invention relates to a dyeing method of protein fiber cotton blended fabric, which comprises the steps of pretreating cotton fibers by a sodium hydroxide solution; the protein fiber is pretreated by a weakly acidic dye inhibitor, so that the fixation rate of the cotton fiber is increased, the fixation rate of the protein fiber is slowed down, and the dyeing homochromy of the blended fabric is improved after the protein fiber and the protein fiber are respectively treated.

(2) According to the dyeing method of the protein fiber cotton blended fabric, neutral fuel is adopted, and the color fixing agent is sodium carbonate, so that the damage of alkali substances to protein fibers is reduced.

(2) According to the dyeing method of the protein fiber cotton blended fabric, the temperature selected in the process is low, the auxiliary agents are added in batches, the process time is prolonged, and the uniform dyeing is ensured.

Detailed Description

For a further understanding of the contents of the present invention, reference will now be made in detail to the following examples.

Example 1

The dyeing method of the protein fiber cotton blended fabric is characterized by comprising the following steps: the method comprises the following specific steps:

step one, pretreating cotton fibers by using a sodium hydroxide solution with the mass concentration of 20%, washing the cotton fibers to be neutral, and drying the cotton fibers; pretreating protein fibers by a weak acid dye-proofing agent, and drying;

step two, after the pretreated cotton fibers and the pretreated protein fibers are subjected to the processes of cotton picking and cotton carding, the ratio of the cotton fibers to the protein fibers is 82: 18, mixing and drawing the mixture according to the proportion, and obtaining the protein fiber cotton blended fabric through a roving frame and a spinning frame;

and step three, putting the protein fiber cotton blended fabric, neutral dye with the relative fabric mass fraction of 1% (o.w.f), and sodium chloride into a constant-temperature water bath pot filled with water, keeping the bath ratio at 1:40, keeping the temperature at 45 ℃ for 20min for dyeing, heating to 65 ℃ at 1.5 ℃ per minute, adding sodium carbonate, keeping the temperature for 40min for fixation, then washing the dyed protein fiber cotton blended fabric with hot water, cooling to 45 ℃, adding a soaping agent, quickly heating to 70 ℃, keeping the temperature for 10min, washing with water at 60 ℃, and drying to obtain the dyed protein fiber cotton blended fabric.

Example 2

The dyeing method of the protein fiber cotton blended fabric is characterized by comprising the following steps: the method comprises the following specific steps:

step one, pretreating cotton fibers by using a sodium hydroxide solution with the mass concentration of 20%, washing the cotton fibers to be neutral, and drying the cotton fibers; pretreating protein fibers by a weak acid dye-proofing agent, and drying;

step two, after the pretreated cotton fibers and the pretreated protein fibers are subjected to the processes of cotton picking and cotton carding, the ratio of the cotton fibers to the protein fibers is 8: 2, mixing and drawing according to the proportion, and obtaining the protein fiber cotton blended fabric through a roving frame and a spinning frame;

and step three, putting the protein fiber cotton blended fabric, neutral dye with the relative fabric mass fraction of 1% (o.w.f), and sodium chloride into a constant-temperature water bath pot filled with water, keeping the bath ratio at 1:43, keeping the temperature at 50 ℃ for 25min for dyeing, heating to 68 ℃ at 1.5 ℃ per minute, adding sodium carbonate, keeping the temperature for 43min for fixation, then washing the dyed protein fiber cotton blended fabric with hot water, cooling to 48 ℃, adding a soaping agent, quickly heating to 75 ℃, keeping the temperature for 10min, washing with water at 65 ℃, and drying to obtain the dyed protein fiber cotton blended fabric.

Example 3

The dyeing method of the protein fiber cotton blended fabric is characterized by comprising the following steps: the method comprises the following specific steps:

step one, pretreating cotton fibers by using a sodium hydroxide solution with the mass concentration of 20%, washing the cotton fibers to be neutral, and drying the cotton fibers; pretreating protein fibers by a weak acid dye-proofing agent, and drying;

step two, after the pretreated cotton fibers and the pretreated protein fibers are subjected to the processes of cotton picking and cotton carding, the ratio of the pretreated cotton fibers to the pretreated protein fibers is 77: 23, mixing and drawing the mixture according to the proportion, and obtaining the protein fiber cotton blended fabric through a roving frame and a spinning frame;

and step three, putting the protein fiber cotton blended fabric, neutral dye with the relative fabric mass fraction of 1% (o.w.f), and sodium chloride into a constant-temperature water bath pot filled with water, keeping the bath ratio at 1:45, keeping the temperature at 55 ℃ for 30min for dyeing, heating to 70 ℃ at 1.5 ℃ per minute, adding sodium carbonate, keeping the temperature for 45min for fixation, cleaning the dyed protein fiber cotton blended fabric with hot water, cooling to 55 ℃, adding a soaping agent, quickly heating to 80 ℃, keeping the temperature for 10min, washing with water at 70 ℃, and drying to obtain the dyed protein fiber cotton blended fabric.

The present invention and its embodiments have been described above schematically, the description is not restrictive, the embodiments shown in the examples are only one of the embodiments of the present invention, and the practical situation is not limited to the embodiments. Therefore, if the person skilled in the art receives the teaching, it is within the scope of the present invention to design the embodiments similar to the technical solutions without the inventive concept.