阅读说明：本技术 一种色调均匀的布料快速染色方法 (Rapid dyeing method for cloth with uniform color tone ) 是由 范方俊 于 2021-08-26 设计创作，主要内容包括：本发明涉及的色调均匀的布料快速染色方法,包括坯布退浆、坯布预缩、平整处理、碱减量处理、染色处理以及后定型处理,染色处理包括步骤染料的制备、初步染色、初步清洗、烘干定型、第二次染色和二次清洗等步骤。通过初步染色、烘干定型和第二次染色使得染料能够完全依附在布料上,不易脱色,能够提高染料和布料纤维分子间结合强度；避免清洗过程中染料脱落,出现掉色现象；并且能够降低染料的光氧化分解,提高布料的耐晒牢度；在第二次染色过程中,使得染色机中的染液的浓度保持在0.5-0.6g/L,能够保证布料吸附更多的染料,降低解吸过程,加快对布料的染色速度,提高染色效率。(The invention relates to a method for quickly dyeing cloth with uniform color tone, which comprises the steps of desizing grey cloth, preshrinking grey cloth, leveling treatment, alkali decrement treatment, dyeing treatment and post-sizing treatment, wherein the dyeing treatment comprises the steps of dye preparation, preliminary dyeing, preliminary cleaning, drying and sizing, secondary dyeing, secondary cleaning and the like. The dye can be completely attached to the cloth through primary dyeing, drying and sizing and secondary dyeing, is not easy to decolor, and can improve the bonding strength between the dye and the cloth fiber molecules; the dye is prevented from falling off in the cleaning process, and the phenomenon of color fading is avoided; the photooxidation decomposition of the dye can be reduced, and the light fastness of the cloth is improved; in the second dyeing process, the concentration of the dye liquor in the dyeing machine is kept at 0.5-0.6g/L, so that more dye can be adsorbed on the cloth, the desorption process is reduced, the dyeing speed of the cloth is accelerated, and the dyeing efficiency is improved.)

1. A rapid dyeing method of cloth with uniform color tone comprises the steps of grey cloth desizing, grey cloth preshrinking, leveling treatment, alkali decrement treatment, dyeing treatment and post-setting treatment, and is characterized in that the dyeing treatment comprises the following steps:

s1: preparation of dye: providing distilled water, and dissolving a dye in the distilled water to prepare a dye solution, wherein the concentration of the dye solution is 0.5-0.6 g/L;

s2: preliminary dyeing: diluting the dye liquor to obtain 0.1-0.2g/L diluted dye liquor, injecting the diluted dye liquor into a dyeing machine, placing the cloth subjected to alkali decrement treatment into a dyeing machine, heating the dye liquor in the dyeing machine at 60-80 ℃, and continuously stirring the cloth for 3-5 min;

s3: primary cleaning: rinsing the primarily dyed cloth by using clean water, and drying the cloth by using hot air at the temperature of 30-50 ℃ after rinsing is finished;

s4: drying and shaping: pre-setting the dried cloth, wherein in the pre-setting process, a cloth feeding machine is adopted to guide the cloth into a setting machine for pre-setting treatment, the pre-setting temperature is set to be 185-190 ℃, and the setting time is 45-60 s;

s5: and (3) dyeing for the second time: injecting dye liquor with the concentration of 0.5-0.6g/L into a dyeing machine, then placing the pre-shaped cloth into the dyeing machine, heating the dye liquor in the dyeing machine at the heating temperature of 100-125 ℃, continuously stirring the cloth for 10-20min, detecting the concentration of the dye liquor in the dyeing machine, adding high-concentration dye liquor when detecting that the concentration of the dye liquor in the dyeing machine is lower than 0.5g/L, keeping the concentration of the dye liquor in the dyeing machine at 0.5-0.6g/L, collecting the redundant dye in an overflow mode, and recycling the redundant dye;

s6: secondary cleaning: rinsing the secondary dyed cloth with clean water, and drying the cloth with hot air at 30-50 ℃ after rinsing;

the post-sizing treatment comprises the following steps:

a1: infiltrating the cloth by using a penetrant;

a2: shaping the soaked cloth by using a shaping machine with a shaping liquid;

a3: drying the cloth after the sizing treatment to obtain the dyed cloth;

the shaping liquid comprises the following substances in parts by weight: 20-30 parts of a softening agent, 30-40 parts of disodium hydrogen phosphate, 70-80 parts of a plasticizer, 10-20 parts of glyceryl tristearate, 30-34 parts of polytetrafluoroethylene particles and 3-5 parts of sodium alginate.

2. The method for rapidly dyeing the cloth with uniform color tone according to claim 1, wherein the softening agent comprises the following components in percentage by weight: 10-20% of dioctadecyl dimethyl ammonium chloride, 20-30% of fatty alcohol-polyoxyethylene ether and the balance of water.

3. The method for rapidly dyeing cloth with uniform color tone according to claim 1, wherein the plasticizer comprises the following components in percentage by weight: 40-60% of polyethylene glycol phthalate; 20% -30% of tween-80 and 20% -40% of a dispersing agent.

4. The method for rapidly dyeing uniformly-shaded cloth according to claim 1, characterized in that periodic tension and periodic pressure are applied to the cloth placed in the solution along the length direction of the dyeing machine during the primary dyeing and the secondary dyeing.

5. The method for rapidly dyeing cloth with uniform color tone according to claim 1, wherein in the second dyeing step, when the concentration of the dye liquor of the dyeing machine is low, a part of the dye liquor is discharged by an overflow method, and simultaneously, a high-concentration dye liquor is injected to increase the concentration of the dye liquor in the dyeing machine, then the part of the dye liquor is concentrated until the concentration of the part of the dye liquor is concentrated to be more than 0.5g/L, and then the concentrated dye liquor is recycled for standby or returned to the dyeing machine, wherein the concentration of the high-concentration dye liquor is 0.8-1.2 g/L.

6. The method for rapidly dyeing the cloth with uniform color tone according to claim 1, characterized in that in the dye preparation process, distilled water is preheated at 60-80 ℃, then the distilled water and the dye are simultaneously introduced into a stirring kettle for stirring, and the distilled water is introduced into the stirring kettle in a spiral water flow mode.

7. The method for rapidly dyeing cloth with uniform color tone according to claim 5, characterized in that in the second dyeing step, when the concentrated dye liquor is recovered, the dye liquor is first cooled, and then the cooled concentrated dye liquor is conveyed into a sealed container for storage.

8. The method for rapidly dyeing cloth with uniform color tone according to claim 1, characterized in that the clear water adopted in the primary cleaning and the secondary cleaning is deionized water.

9. The method for quickly dyeing the cloth with uniform color tone according to claim 1, wherein the setting solution comprises the following substances in parts by weight: 25 parts of softening agent, 35 parts of disodium hydrogen phosphate, 75 parts of plasticizer, 15 parts of glyceryl tristearate, 32 parts of polytetrafluoroethylene particles and 4 parts of sodium alginate.

Technical Field

The invention relates to the technical field of spinning, in particular to a method for quickly dyeing cloth with uniform color tone.

Background

Fiber dyeing is roughly divided into three basic stages, the first stage: adsorption, the dye is gradually diffused and transferred from the solution to the surface of the fiber after the fiber is put into the dye bath, and the process is called adsorption. Over time, the dye concentration on the fiber gradually increases, while the dye concentration in the solution gradually decreases, after a period of time, reaching an equilibrium state. The reverse process of adsorption is desorption, which occurs simultaneously during the dyeing process. And a second stage: and (4) diffusing the dye adsorbed on the surface of the fiber into the fiber until the concentration of the dye tends to be consistent in each part of the fiber. Since the concentration of the dye adsorbed on the surface of the fiber is greater than that of the dye in the interior of the fiber, the dye is promoted to diffuse from the surface of the fiber to the interior of the fiber. At this point, the dye diffusion breaks the initially established adsorption equilibrium, the dye in solution is continually adsorbed onto the fiber surface, and adsorption and desorption again reach equilibrium. And a third stage: fixation is the process of combining dye and fiber, and the combination mode is different according to the dye and the fiber.

In the dyeing process in the prior art, when the fabric is dyed, a solution enters the fabric, and under the adsorption action, the dye in the solution in the fabric is adsorbed on the fiber, so that the concentration of the dye in the upper liquid of the fabric is reduced, the dyeing machine makes full contact with the fabric by using the solution, and makes solute in the solution diffuse into the solution in the fabric by using the higher concentration of the dye in the solution (the diffusion of the solute in the solution is not a diffusion stage in the dyeing process), and the diffusion effect is slow, so that the dyeing efficiency is low.

Disclosure of Invention

In order to overcome the defects in the prior art, the embodiment of the invention provides a rapid dyeing method for cloth with uniform color tone, which has an attractive structure and compact cloth.

The embodiment of the application discloses: a rapid dyeing method of cloth with uniform color tone comprises the steps of grey cloth desizing, grey cloth preshrinking, leveling treatment, alkali decrement treatment, dyeing treatment and post-sizing treatment, wherein the dyeing treatment comprises the following steps:

s1: preparation of dye: providing distilled water, and dissolving a dye in the distilled water to prepare a dye solution, wherein the concentration of the dye solution is 0.5-0.6 g/L;

s2: preliminary dyeing: diluting the dye liquor to obtain 0.1-0.2g/L diluted dye liquor, injecting the diluted dye liquor into a dyeing machine, placing the cloth subjected to alkali decrement treatment into a dyeing machine, heating the dye liquor in the dyeing machine at 60-80 ℃, and continuously stirring the cloth for 3-5 min;

s3: primary cleaning: rinsing the primarily dyed cloth by using clean water, and drying the cloth by using hot air at the temperature of 30-50 ℃ after rinsing is finished;

s4: drying and shaping: pre-setting the dried cloth, wherein in the pre-setting process, a cloth feeding machine is adopted to guide the cloth into a setting machine for pre-setting treatment, the pre-setting temperature is set to be 185-190 ℃, and the setting time is 45-60 s;

s5: and (3) dyeing for the second time: injecting dye liquor with the concentration of 0.5-0.6g/L into a dyeing machine, then placing the pre-shaped cloth into the dyeing machine, heating the dye liquor in the dyeing machine at the heating temperature of 100-125 ℃, continuously stirring the cloth for 10-20min, detecting the concentration of the dye liquor in the dyeing machine, adding high-concentration dye liquor when detecting that the concentration of the dye liquor in the dyeing machine is lower than 0.5g/L, keeping the concentration of the dye liquor in the dyeing machine at 0.5-0.6g/L, collecting the redundant dye in an overflow mode, and recycling the redundant dye;

s6: secondary cleaning: rinsing the secondary dyed cloth with clean water, and drying the cloth with hot air at 30-50 ℃ after rinsing;

the post-sizing treatment comprises the following steps:

a1: infiltrating the cloth by using a penetrant;

a2: shaping the soaked cloth by using a shaping machine with a shaping liquid;

a3: drying the cloth after the sizing treatment to obtain the dyed cloth;

the shaping liquid comprises the following substances in parts by weight: 20-30 parts of a softening agent, 30-40 parts of disodium hydrogen phosphate, 70-80 parts of a plasticizer, 10-20 parts of glyceryl tristearate, 30-34 parts of polytetrafluoroethylene particles and 3-5 parts of sodium alginate.

Further, the softening agent comprises the following components in percentage by weight: 10-20% of dioctadecyl dimethyl ammonium chloride, 20-30% of fatty alcohol-polyoxyethylene ether and the balance of water.

Further, the plasticizer comprises the following components in percentage by weight: 40-60% of polyethylene glycol phthalate; 20% -30% of tween-80 and 20% -40% of a dispersing agent.

Further, in the primary dyeing and the secondary dyeing, a periodic tension and a periodic pressure are applied to the cloth placed in the solution along the length direction of the dyeing machine.

Further, in the second dyeing step, when the concentration of the dye liquor of the dyeing machine is low, part of the dye liquor is discharged by an overflow method, high-concentration dye liquor is injected to increase the concentration of the dye liquor in the dyeing machine, then the part of the dye liquor is concentrated until the concentration is higher than 0.5g/L, and then the concentrated dye liquor is recovered for standby or returned to the dyeing machine, wherein the concentration of the high-concentration dye liquor is 0.8-1.2 g/L.

Further, in the dye preparation process, distilled water is preheated at the preheating temperature of 60-80 ℃, then the distilled water and the dye are simultaneously introduced into a stirring kettle for stirring, and the distilled water is introduced into the stirring kettle in a spiral water flow mode.

Further, in the second dyeing step, when the concentrated dye liquor is recovered, the dye liquor is cooled firstly, and then the cooled concentrated dye liquor is input into a sealed container for storage.

Furthermore, the clean water adopted in the primary cleaning process and the secondary cleaning process is deionized water.

Further, the shaping liquid comprises the following substances in parts by weight: 25 parts of softening agent, 35 parts of disodium hydrogen phosphate, 75 parts of plasticizer, 15 parts of glyceryl tristearate, 32 parts of polytetrafluoroethylene particles and 4 parts of sodium alginate.

The invention has the advantages that:

1. the dye can be completely attached to the cloth through primary dyeing, drying and sizing and secondary dyeing, is not easy to decolor, and can improve the bonding strength between the dye and the cloth fiber molecules; the dye is prevented from falling off in the cleaning process, and the phenomenon of color fading is avoided; the photooxidation decomposition of the dye can be reduced, and the light fastness of the cloth is improved;

2. in the second dyeing process, the concentration of the dye liquor in the dyeing machine is kept at 0.5-0.6g/L, so that more dye can be adsorbed on the cloth, the desorption process is reduced, the dyeing speed of the cloth is accelerated, and the dyeing efficiency is improved;

3. through the postforming treatment step, the attachment rate of the dye on the cloth can be further improved, the dye migration in the drying process is reduced, and the color-losing degree of the cloth after cleaning or airing is reduced.

In order to make the aforementioned and other objects, features and advantages of the invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Detailed Description

The technical solutions in the present invention will be described clearly and completely in conjunction with the implementation of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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

A rapid dyeing method of cloth with uniform color tone comprises the steps of grey cloth desizing, grey cloth preshrinking, leveling treatment, alkali decrement treatment, dyeing treatment and post-sizing treatment, wherein the dyeing treatment comprises the following steps:

s1: preparation of dye: providing distilled water, and dissolving a dye in the distilled water to prepare a dye solution, wherein the concentration of the dye solution is 0.5-0.6 g/L;

s2: preliminary dyeing: diluting the dye liquor to obtain 0.1-0.2g/L diluted dye liquor, injecting the diluted dye liquor into a dyeing machine, placing the cloth subjected to alkali decrement treatment into a dyeing machine, heating the dye liquor in the dyeing machine at 60-80 ℃, and continuously stirring the cloth for 5 min;

s3: primary cleaning: rinsing the primarily dyed cloth by using clean water, and drying the cloth by using hot air at 50 ℃ after rinsing is finished;

s4: drying and shaping: pre-setting the dried cloth, wherein in the pre-setting process, a cloth feeding machine is adopted to guide the cloth into a setting machine for pre-setting, the pre-setting temperature is set to be 190 ℃, and the setting time is 60 s;

s5: and (3) dyeing for the second time: injecting dye liquor with the concentration of 0.5-0.6g/L into a dyeing machine, then placing the pre-shaped cloth into the dyeing machine, heating the dye liquor in the dyeing machine at 125 ℃, continuously stirring the cloth for 20min, detecting the concentration of the dye liquor in the dyeing machine, adding high-concentration dye liquor when detecting that the concentration of the dye liquor in the dyeing machine is lower than 0.5g/L, keeping the concentration of the dye liquor in the dyeing machine at 0.5-0.6g/L, collecting redundant dye in an overflow mode, and recycling the redundant dye;

s6: secondary cleaning: rinsing the secondary dyed cloth by using clean water, and drying the cloth by adopting hot air at 50 ℃ after rinsing is finished;

the post-sizing treatment comprises the following steps:

a1: infiltrating the cloth by using a penetrant;

a2: shaping the soaked cloth by using a shaping machine with a shaping liquid;

a3: drying the cloth after the sizing treatment to obtain the dyed cloth;

the shaping liquid comprises the following substances in parts by weight: 25 parts of softening agent, 35 parts of disodium hydrogen phosphate, 75 parts of plasticizer, 15 parts of glyceryl tristearate, 32 parts of polytetrafluoroethylene particles and 4 parts of sodium alginate.

In the above embodiment, the softener comprises the following components in percentage by weight: 15% of dioctadecyl dimethyl ammonium chloride, 25% of fatty alcohol-polyoxyethylene ether and the balance of water.

In the above examples, the plasticizer comprises the following components in percentage: 50% of polyethylene glycol phthalate; 25% of tween-80 and 30% of homogenizing agent.

In the above embodiment, in the primary dyeing and the secondary dyeing, a periodic tension and a periodic pressure are applied to the cloth placed in the solution along the length direction of the dyeing machine.

In the above embodiment, in the second dyeing step, when the concentration of the dye liquor of the dyeing machine is low, a part of the dye liquor is discharged by an overflow method, and a high-concentration dye liquor is injected to increase the concentration of the dye liquor in the dyeing machine, then the part of the dye liquor is concentrated until the concentration is higher than 0.5g/L, and then the concentrated dye liquor is recovered for standby use or returned to the dyeing machine, wherein the concentration of the high-concentration dye liquor is 0.8-1.2 g/L.

In the embodiment, during the dye preparation process, distilled water is preheated at the temperature of 60-80 ℃, then the distilled water and the dye are simultaneously introduced into a stirring kettle for stirring, and the distilled water is introduced into the stirring kettle in a spiral water flow mode.

In the above embodiment, in the second dyeing step, when the concentrated dye liquor is recovered, the temperature of the dye liquor is first reduced, and then the reduced concentrated dye liquor is transferred into a sealed container for storage.

In the above embodiment, the clean water used in the primary cleaning and the secondary cleaning is deionized water.

Example 2

The main characteristics are the same as those of the embodiment 1, and the difference characteristics are that: the shaping liquid comprises the following substances in parts by weight: 20 parts of softening agent, 30 parts of disodium hydrogen phosphate, 70 parts of plasticizer, 10 parts of tristearin, 30 parts of polytetrafluoroethylene particles and 3 parts of sodium alginate.

Example 3

The main characteristics are the same as those of the embodiment 1, and the difference characteristics are that: the shaping liquid comprises the following substances in parts by weight: 30 parts of softening agent, 40 parts of disodium hydrogen phosphate, 80 parts of plasticizer, 20 parts of glyceryl tristearate, 34 parts of polytetrafluoroethylene particles and 5 parts of sodium alginate.

Comparative example 1

The main characteristics are the same as those of the embodiment 1, and the difference characteristics are that: the post-sizing treatment process is carried out according to a conventional process.

Comparative example 2

And dyeing the cloth completely according to the conventional process.

Selecting the cloth obtained in the embodiment 1, the embodiment 2, the embodiment 3, the comparative example 1 and the comparative example 2, respectively cutting the cloth to 10cm multiplied by 10cm, and measuring the color of the cut cloth by adopting a spectrophotometric colorimeter type computer color meter, wherein the initial color is marked as 1; then, putting the cut cloth into the same solution, adding the same cleaning solution to carry out water washing for 20min, then respectively taking out the cloth and airing the cloth in a shade place, when the washing times are 1 time, 3 times, 5 times, 10 times and 20 times, then carrying out color measurement on the aired cloth by adopting the same method, and calculating to obtain color differences, wherein the list is as follows:

as can be clearly seen from the above table, by using the rapid dyeing method for the cloth with uniform color tone, the decolorization probability of the cloth in the subsequent cleaning process can be reduced, and the dye falling and the color losing phenomenon in the cleaning process are avoided; and the photooxidation decomposition of the dye can be reduced, and the light fastness of the cloth is improved. Referring to example 1 and comparative example 1, it is understood that the adhesion rate of the dye to the fabric can be further improved by treating the fabric with the setting liquid in the post-setting treatment. Referring to examples 1, 2 and 3, it is understood that the most preferable discoloration preventing effect can be obtained when the fixing solution is composed of 25 parts of a softening agent, 35 parts of disodium hydrogen phosphate, 75 parts of a plasticizer, 15 parts of glyceryl tristearate, 32 parts of polytetrafluoroethylene fine particles and 4 parts of sodium alginate.

The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.