阅读说明：本技术 一种氨纶纱线的制备方法 (Preparation method of spandex yarn ) 是由 谭炳成 于 2018-06-05 设计创作，主要内容包括：本发明属于氨纶纱线领域,具体涉及一种氨纶纱线的制备方法,包括如下步骤：(1)对半成品氨纶纱线采用紫外光照射10-20分钟；(2)对步骤(1)获得的氨纶纱线放入染色液染色10-20分钟,所述的染色液的pH为3-5；(3)从染色液中取出氨纶纱线,在温度40摄氏度下真空烘干2-5分钟,再常温下真空烘干20-60分钟。与现有技术比较本发明的有益效果：采用紫外光照射,提高阻燃性能；采用温度40摄氏度下真空烘干3分钟,在常温下真空烘干30分钟,保持氨纶纱线张力,使氨纶纱线不容易卷曲；氨纶纱线放入染色液染色10-20分钟,所述的染色液的pH为酸性,在染色时保持材料韧性。(The invention belongs to the field of spandex yarns, and particularly relates to a preparation method of spandex yarns, which comprises the following steps: (1) irradiating the semi-finished spandex yarn by using ultraviolet light for 10-20 minutes; (2) putting the spandex yarn obtained in the step (1) into a dyeing solution for dyeing for 10-20 minutes, wherein the pH value of the dyeing solution is 3-5; (3) taking the spandex yarn out of the dyeing solution, drying the spandex yarn at 40 ℃ for 2-5 minutes in vacuum, and drying the spandex yarn at normal temperature for 20-60 minutes in vacuum. Compared with the prior art, the invention has the beneficial effects that: ultraviolet light irradiation is adopted, so that the flame retardant property is improved; vacuum drying is carried out for 3 minutes at the temperature of 40 ℃, vacuum drying is carried out for 30 minutes at normal temperature, and the tension of spandex yarns is kept, so that the spandex yarns are not easy to curl; and putting the spandex yarns into dyeing liquor for dyeing for 10-20 minutes, wherein the pH of the dyeing liquor is acidic, and the toughness of the material is kept during dyeing.)

1. A preparation method of spandex yarn is characterized by comprising the following steps: irradiating the semi-finished spandex yarn by using ultraviolet light for 10-20 minutes; putting the spandex yarn obtained in the step (1) into a dyeing solution for dyeing for 10-20 minutes, wherein the pH value of the dyeing solution is 3-5; and (3) taking the spandex yarn out of the dyeing solution, drying the spandex yarn for 2 to 5 minutes at 40 ℃ in vacuum, and drying the spandex yarn for 20 to 60 minutes in vacuum at normal temperature.

2. The method for preparing spandex yarn according to claim 1, wherein the semi-finished spandex yarn is a spandex yarn formed after being drawn.

3. The method for preparing spandex yarn according to claim 1, wherein in step (2), the dyeing solution has a pH of 4.5.

4. The method for preparing spandex yarn according to claim 1, wherein in step (3), the spandex yarn is vacuum-dried at 40 ℃ for 3 minutes and at room temperature for 30 minutes.

5. The method for preparing spandex yarn according to claim 1, wherein in step (1), the uv index is 5-9, and the distance between the uv source and the spandex yarn is 30-60 cm.

6. The method for preparing spandex yarn according to claim 1, further comprising the step (4) of winding spandex yarn around a disc.

Technical Field

The invention belongs to the field of spandex yarns, and particularly relates to a preparation method of spandex yarns.

Background

At present, the existing semi-finished spandex yarn is easy to burn, namely the flame retardant function is not good, and meanwhile, an alkaline dyeing agent is adopted during dyeing, so that the material is easy to become brittle and easy to damage, and in addition, the yarn is easy to curl by adopting a drying mode.

Disclosure of Invention

The invention aims to overcome the problems and provide a preparation method of spandex yarn, which can improve the flame retardant property of materials, keep the toughness of the materials during dyeing and prevent the yarn from curling.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a preparation method of spandex yarn is characterized by comprising the following steps:

(1) irradiating the semi-finished spandex yarn by using ultraviolet light for 10-20 minutes;

(2) putting the spandex yarn obtained in the step (1) into a dyeing solution for dyeing for 10-20 minutes, wherein the pH value of the dyeing solution is 3-5;

(3) taking the spandex yarn out of the dyeing solution, drying the spandex yarn at 40 ℃ for 2-5 minutes in vacuum, and drying the spandex yarn at normal temperature for 20-60 minutes in vacuum.

The semi-finished spandex yarn is formed by stretching.

In the step (2), the pH of the staining solution is 4.5.

In the step (3), the mixture is dried in vacuum for 3 minutes at the temperature of 40 ℃ and dried in vacuum for 30 minutes at normal temperature.

In the step (1), the ultraviolet light index is 5-9, and the distance between an ultraviolet light source and the spandex yarn is 30-60 cm.

The method also comprises the following step (4) of winding the spandex yarn on the disc.

Compared with the prior art, the invention has the beneficial effects that: ultraviolet light irradiation is adopted, so that the flame retardant property is improved; vacuum drying is carried out for 3 minutes at the temperature of 40 ℃, vacuum drying is carried out for 30 minutes at normal temperature, and the tension of spandex yarns is kept, so that the spandex yarns are not easy to curl; the spandex yarn is placed into dyeing liquor for dyeing for 10-20 minutes, the pH value of the dyeing liquor is acidic, and the toughness of the material is kept during dyeing.

Detailed Description