阅读说明：本技术 一种涤纶织物短流程高色牢度提升方法 (Short-process high-color-fastness improvement method for polyester fabric ) 是由 邓东海 严涌 刘凤珍 李金凤 黄尚东 于 2021-09-09 设计创作，主要内容包括：本发明公开了一种涤纶织物短流程高色牢度提升方法。该方法包括：对染色后织物依次进行还原清洗步骤,氧化清洗步骤,防热迁移剂定形整理步骤；所述还原清洗步骤是采用保险粉或DM-8931碱性还原清洗,或染色后不排液DM-1559酸性还原清洗,所述氧化清洗步骤是采用DM-1510A氧化清洗,所述防热迁移整理步骤是高温定形时采用DM-2512对织物进行防热迁移整理。本发明方法通过各步骤的合理搭配,能简化生产工艺流程,提升涤纶织物的各项湿处理牢度,获得高色牢度效果。(The invention discloses a short-process high-color-fastness improvement method for polyester fabric. The method comprises the following steps: sequentially carrying out a reduction cleaning step, an oxidation cleaning step and a heat migration resistant agent setting and finishing step on the dyed fabric; the reduction cleaning step is alkaline reduction cleaning by adopting sodium hydrosulfite or DM-8931, or acid reduction cleaning by adopting DM-1559 without discharging liquid after dyeing, the oxidation cleaning step is oxidation cleaning by adopting DM-1510A, and the anti-thermomigration finishing step is anti-thermomigration finishing to the fabric by adopting DM-2512 during high-temperature setting. The method can simplify the production process flow, improve various wet treatment fastness of the polyester fabric and obtain the effect of high color fastness by reasonably matching the steps.)

1. A short-process high-color-fastness improvement method for polyester fabrics is characterized by comprising the following steps:

s1) carrying out sodium hydrosulfite or DM-8931 alkaline reduction cleaning on the dyed polyester fabric, or carrying out DM-1559 acid reduction cleaning on the dyed polyester fabric without discharging liquid; during liquid drainage, sodium hydrosulfite or reducing cleaning agent DM-89313.0 g/L is added with caustic soda for alkaline reduction cleaning, and the bath ratio is 1: 10; when liquid is not discharged, the dosage of the reducing cleaning agent DM-1559 is 3.0 g/L, the pH of the working solution is adjusted to be =4.0, the bath ratio is 1: 10, heating at the rate of 2-3 ℃/min, and keeping the temperature at 80 ℃ for 20 min for carrying out acid reduction cleaning;

s2) carrying out DM-1510A oxidation cleaning on the fabric;

s3) performing DM-2512 one-dip one-roll high-temperature anti-heat migration setting finishing.

2. The short-process high-color fastness improvement method for the polyester fabric according to claim 1, characterized in that: in step S1), the sodium hydrosulfite is commercial industrial sodium hydrosulfite, and the caustic soda is commercial industrial sodium hydroxide.

3. The short-process high-color fastness improvement method for the polyester fabric according to claim 1, characterized in that: in step S1), the reducing cleaning agent DM-8931 is a compound of an ethoxylamine compound and water, wherein the mass percent of the ethoxylamine is less than 50%.

4. The short-process high-color fastness improvement method for the polyester fabric according to claim 1, characterized in that: in the step S1), the reducing cleaning agent DM-1559 is a compound of a sulfite compound and water, wherein the mass percent of the sulfite compound is less than 40%.

5. The short-process high-color fastness improvement method for the polyester fabric according to claim 1, characterized in that: in step S2), the polyester-cotton soaping agent DM-1510A is a compound of sodium percarbonate and sodium sulfate.

6. The short-process high-color fastness improvement method for the polyester fabric according to claim 1, characterized in that: in step S3), DM-2512 is a formulation of a cationic amine polymer and water, wherein the mass percentage of the cationic amine polymer is less than 25%.

7. The short-process high-color fastness improvement method for the polyester fabric according to claim 1, characterized in that: in the step S1), during reduction cleaning, the using amount of the sodium hydrosulfite or DM-8931 is 3.0 g/L, the using amount of the caustic soda is 1.2-1.5 g/L, the heating rate is 2-3 ℃/min, the cleaning temperature is 80 ℃, and the heat preservation time is 20 min.

8. The short-process high-color fastness improvement method for the polyester fabric according to claim 1, characterized in that: in step S2), the bath ratio at the time of oxidation cleaning is 1: 10, the using amount of DM-1510A is 1.0g/L, the heating rate is 2-3 ℃/min, the cleaning temperature is 80 ℃, and the heat preservation time is 20 min.

9. The short-process high-color fastness improvement method for the polyester fabric according to claim 1, characterized in that: in step S3), the amount of DM-2512 was 30 g/L, the setting temperature was 160-195 ℃ and the setting time was 90 Sec.

Technical Field

The invention relates to a method capable of improving color fastness of polyester fabrics, in particular to a short-process high-color-fastness improvement treatment method.

Background

The polyester fabric is generally dyed by adopting disperse dyes under the conditions of high temperature and high pressure, and the macromolecular of the polyester fiber moves violently under the conditions of high temperature and high pressure to generate a large amount of dye accessible gaps, so that the dye is promoted to diffuse into the fiber, the solubility of the dye in the polyester fiber is increased, and the dyeing method is achieved. After dyeing is finished, most of disperse dye in the dye liquor enters the interior of the fiber to achieve ideal dyeing, and part of disperse dye is adhered to the surface of the fiber. Moreover, when the fiber is shaped at high temperature, the movement of fiber macromolecules and dyes is accelerated, and dye molecules are easy to migrate from the interior of the fiber to the surface, so that the color fastness is reduced. The traditional method for improving the color fastness of the polyester fabric is generally to perform one or more times of reduction cleaning by using sodium hydrosulfite. However, the sodium hydrosulfite has a good reduction cleaning effect only under the alkaline condition, and the pH value of the cloth surface can be ensured to be in a reasonable range only by carrying out acid neutralization after cleaning. Meanwhile, the sodium hydrosulfite has the defects of large smell, high moisture liability, unstable reduction cleaning effect and the like, and the alkali decrement of the polyester fiber to a certain degree can be caused by multiple times of alkaline high-temperature treatment, so that the fiber surface area is obviously increased, more disperse dyes can be migrated to the fiber surface during high-temperature setting, and the wet treatment fastness of the polyester fabric is difficult to effectively improve.

Disclosure of Invention

The invention aims to provide a short-process high-color-fastness improving method for polyester fabric, which can simplify the production process flow, obviously improve various wet-treatment fastnesses of the polyester fabric and obtain a high-color-fastness effect of the fabric.

In order to achieve the purpose, the invention provides the following technical scheme:

a short-process high-color-fastness improvement method for polyester fabrics comprises the following steps:

s1) carrying out sodium hydrosulfite or DM-8931 alkaline reduction cleaning on the dyed polyester fabric, or carrying out DM-1559 acid reduction cleaning on the dyed polyester fabric without discharging liquid; during liquid drainage, sodium hydrosulfite or reducing cleaning agent DM-89313.0 g/L is added with caustic soda for alkaline reduction cleaning, and the bath ratio is 1: 10; when liquid is not discharged, the dosage of the reducing cleaning agent DM-1559 is 3.0 g/L, the pH of the working solution is adjusted to be =4.0, the bath ratio is 1: 10, heating at the rate of 2-3 ℃/min, and keeping the temperature at 80 ℃ for 20 min for carrying out acid reduction cleaning;

s2) carrying out DM-1510A oxidation cleaning on the fabric;

s3) performing DM-2512 one-dip one-roll high-temperature anti-heat migration setting finishing.

In the short-process high-color-fastness improvement method for the polyester fabric, in step S1), the sodium hydrosulfite is commercial industrial sodium hydrosulfite, and the caustic soda is commercial industrial caustic soda.

In the short-process high-color-fastness improvement method for the polyester fabric, in step S1), the reducing cleaning agent DM-8931 is a compound of an ethoxylated amine compound and water, wherein the mass percent of the ethoxylated amine is less than 50%.

In the short-process high-color-fastness improvement method for the polyester fabric, in step S1), the reducing cleaning agent DM-1559 is a compound of a sulfite compound and water, wherein the mass percent of the sulfite compound is less than 40%.

In the short-process high-color-fastness improvement method for the polyester fabric, in step S2), the polyester cotton soaping agent DM-1510A is a compound of sodium percarbonate and sodium sulfate.

In the short-process high-color-fastness improvement method for the polyester fabric, in step S3), DM-2512 is a compound of a cationic amine polymer and water, wherein the mass percent of the cationic amine polymer is less than 25%.

In the short-process high-color-fastness improvement method for the polyester fabric, in the step S1), during reduction cleaning, the using amount of sodium hydrosulfite or DM-8931 is 3.0 g/L, the using amount of caustic soda is 1.2-1.5 g/L, the heating rate is 2-3 ℃/min, the cleaning temperature is 80 ℃, and the heat preservation time is 20 min.

In the short-process high-color-fastness improvement method for the polyester fabric, in step S2), the bath ratio during oxidation cleaning is 1: 10, the using amount of DM-1510A is 1.0g/L, the heating rate is 2-3 ℃/min, the cleaning temperature is 80 ℃, and the heat preservation time is 20 min.

In the short-process high-color-fastness improvement method of the polyester fabric, in the step S3), the using amount of the DM-2512 is 30 g/L, the setting temperature is 160-195 ℃, and the setting time is 90 Sec.

The method firstly utilizes the sodium hydrosulfite or DM-8931 or DM-1559 to reduce and clean the dyed fabric, utilizes the reduction reaction to destroy the disperse dye on the surface of the polyester fiber, and reduces or avoids the alkali decrement of the fiber under the alkaline high-temperature environment condition. And (3) oxidizing and cleaning the fabric subjected to reduction cleaning by using DM-1510A, further destroying the disperse dye with unfixed polyester fibers by using an oxidation reaction, and meanwhile, enabling residual liquid subjected to oxidation cleaning to be acidic without a neutralization step. And (3) padding the oxidized and cleaned fabric with DM-2512, and setting at a high temperature, so that the size stability of the fabric is ensured, creases are eliminated, and the dye is prevented from migrating to the surface of the fiber. Can omit neutralization, simplify the production flow and obtain the effect of high color fastness of the fabric.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

reduction and cleaning: the single-color fabric dyed by the disperse ruby S-2 GFL/disperse black EX-SF with the dye amount of 5.0% is processed according to the bath ratio of 1: 10, cleaning for 20 min at 80 ℃ by using 3.0 g/L of sodium hydrosulfite and 1.2 g/L of caustic soda, and discharging liquid.

An oxidation cleaning step: according to the bath ratio of 1: 10, washing for 20 min at 80 ℃ by using 1.0g/L of DM-1510A. Draining, washing with water, and dewatering.

High-temperature anti-thermomigration setting step: DM-251230 g/L, one-dip one-roll, and shaping at 190 ℃ to 90 Sec. At the moment, the color fastness to soaping of the two colors of fabrics is 3-4 grade, the color fastness to perspiration is 4 grade, the color fastness to dry and wet rubbing is 4 grade, and the color fastness to boiling water is 3-4 grade.

Example 2:

reduction and cleaning: the single-color fabric dyed by the disperse ruby S-2 GFL/disperse black EX-SF with the dye amount of 5.0% is processed according to the bath ratio of 1: 10, cleaning for 20 min at the temperature of 80 ℃ by using DM-89313.0 g/L + caustic soda 1.2 g/L, and discharging liquid.

An oxidation cleaning step: according to the bath ratio of 1: 10, washing for 20 min at 80 ℃ by using 1.0g/L of DM-1510A. Draining, washing with water, and dewatering.

High-temperature anti-thermomigration setting step: DM-251230 g/L, one-dip one-roll, and shaping at 190 ℃ to 90 Sec. At the moment, the two colors of fabrics have soaping fastness of 4 grades, sweat stain fastness of 4 grades, dry and wet friction fastness of 4 grades and boiling water soaking fastness of 4 grades.

Example 3:

reduction and cleaning: and (3) adding DM-15593.0 g/L into the monochrome fabric without discharging liquid after the disperse ruby S-2 GFL/disperse black EX-SF with the dye amount of 5.0%, adjusting the pH =4.0 of the working solution, and cleaning for 20 min at 80 ℃ for discharging liquid.

An oxidation cleaning step: according to the bath ratio of 1: 10, washing for 20 min at 80 ℃ by using 1.0g/L of DM-1510A. Draining, washing with water, and dewatering.

High-temperature anti-thermomigration setting step: DM-251230 g/L, one-dip one-roll, and shaping at 190 ℃ to 90 Sec. At the moment, the color fastness to soaping of the two colors of fabrics is 3-4 grade, the color fastness to perspiration is 4 grade, the color fastness to dry and wet rubbing is 4 grade, and the color fastness to boiling water is 3-4 grade.

The method for testing the fastness to boiling water comprises the following steps: bath ratio of 1: and 50, soaking the tide phosphorus-free washing powder at the concentration of 2 g/L in boiled water to room temperature, and comparing the color-losing situation.

The fabric finished by the washable waterproof and color fixing one-bath process is not reduced in waterproof effect after being washed for 10 times and 20 times, and the finished fabric has obvious effects of improving the color fastness to washing, the color fastness to perspiration and the color fastness to boiling water of the fabric, and is excellent in wrinkle resistance and air permeability.