A method for dyeing a blended fabric containing seaweed fibers with reactive dyes

Abstract

The application discloses a kind of seaweed fiber-containing blended fabric reactive dyeing method, belong to textile chemical technology field.It mainly solves the technical problem of seaweed fiber-containing blended fabric dyeing, and will promote seaweed fiber application on blended fabric.This technology is mainly through the introduction of water-soluble aluminate auxiliary seaweed fiber blended fabric pretreatment, then using reactive dye for dyeing.In dyeing, also use basic aluminate salt as fixing agent to further improve color fastness.Use this method to dye seaweed fiber-containing blended fabric, dyeing rate of dye on fiber is greater than 85%, seaweed fiber loss rate is low, and the dyeing evenness and penetration of fiber are relatively excellent, and soaping fastness is greater than or equal to 4.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of textile chemical technology, and particularly relates to a method for dyeing active dyes of a seaweed fiber-containing blended fabric. BACKGROUND

[0002] Alginic acid is a natural linear polysaccharide extracted from brown algae, and is a non-toxic, harmless and biodegradable pure natural green material. Alginic acid fiber prepared by wet spinning with alginic acid as raw material can be applied in the fields of textiles, clothing, medical and health care, and is a functional fiber material with high added value. Alginic acid fiber has attracted attention due to its excellent moisture absorption performance, film-forming and fiber-forming performance, and good biodegradability and biocompatibility. The soft and smooth hand feeling of alginic fiber brings comfort in wearing. On the other hand, due to the smooth hand feeling and low single fiber strength of alginic fiber, it is difficult to spin alginic fiber. At present, it is still difficult to realize pure spinning of alginic fiber; on the other hand, due to the slightly high price of alginic fiber at present, blending of alginic fiber with other fabrics can reduce the cost of blended fabrics. Blending of alginic fiber with cotton and wool is two larger varieties, and the blended fiber can be endowed with multiple functions, such as excellent wearing properties of blended fiber, such as warmth, comfort, antibacterial and flame retardant, so that it has good industrial application prospect in the fields of clothing and industrial textiles.

[0003] Alginic fiber dyeing is a technical problem at present. The molecular structure of alginic fiber contains part of carboxyl groups in the form of chelation with calcium ions. The negative charge of the fiber is due to the ionization of the part of carboxyl groups in the aqueous solution; the traditional anionic dye molecules also carry negative charge in the aqueous solution. Therefore, under the repulsion of the same charge, the dyeing rate of alginic fiber with traditional dyes is low, and the dye is adsorbed on the surface of alginic fiber to exist as a floating color. This results in the difficulty of dyeing alginic fiber in the current dyeing system. In addition, alginic fiber will hydrolyze when the concentration of N + , Na + , K + is too high, and will gradually solidify when the concentration of Ca 2+ is high. Ion exchange between Ca 2+ in the fiber and N + , Na + , K + in the dyeing solution will destroy the calcium-oxygen chelation structure of alginic fiber and cause damage to the strength of the fiber.

[0004] Although there are many seaweed fiber dyeing technologies such as CN101736440A, CN103981744A, CN108252130A and CN105332291A. Take pure cotton fabric blending as an example, because the conventional dyeing process of pure cotton fabric needs a large amount of salt for dyeing and alkali for fixing color, which will cause great damage to seaweed fiber and cause weight loss. In addition, if the blended fabric is dyed separately from the seaweed fiber, it will make the dyeing process complex, increase the cost and time-consuming. There are some reports on the dyeing of blended fabric containing seaweed fiber at home and abroad, mainly divided into: traditional dyeing method, auxiliary modification, seaweed fiber colored yarn blending, development of special dyes.

[0005] The traditional dyeing method such as the paper published by Wang Jin et al. Dyeing of seaweed / cotton blended knitted fabric (Dyeing and Finishing, 2017, Vol. 43 No. 13, 31-33) adopts the traditional reactive dyeing method similar to cotton fabric, and the dosage of sodium carbonate as fixing alkali reaches 25% of the weight of the fabric, which will cause the gelation of seaweed fiber and have a great influence on the strength and weight loss rate of the fabric. The paper does not measure the weight loss rate before and after the fabric is dyed. The gelation and strength loss of seaweed fiber will have a great influence on the function of blended fabric, and there will be great problems in industrial application. For example, CN108914630A, the concentration of caustic soda in the pretreatment liquid is 2-6 g / L, which will basically dissolve the seaweed fiber. This shows that the traditional reactive dyeing method of cotton fabric is not suitable for seaweed fiber blended fabric.

[0006] The auxiliary modification dyeing method such as CN109295773A discloses a method for dyeing seaweed acid calcium fiber / silk fiber blended fabric with polyethylene amine macromolecular dye. The core of the application is: a large number of primary amino groups carried by polyethylene amine form ionic bond with dye under alkaline conditions, at the same time, polyethylene amine macromolecular dye forms hydrogen bond and intermolecular force with silk fiber under alkaline conditions, realizing the dyeing of seaweed acid calcium fiber / silk fiber blended fabric with polyethylene amine macromolecular dye. The limitation of this method is that the structure of polyethylene amine macromolecular dye disclosed is different from the structure of existing general dyes, the synthesis process of polyethylene amine is complex, the actual application cost is high, and there is a lack of industrial cooperation. In addition, polyethylene amine needs to adjust the pH value to 8.5-10 when used, which will damage the seaweed fiber.

[0007] The seaweed fiber colored yarn blending method such as CN116136069A discloses a salt-free and alkali-free dyeing method for seaweed fiber blended fiber yarn. The dyeing method mainly dyes the cheese yarn by adding dye in the cheese groove, and then fixes the color by high temperature saturated steam to achieve the dyeing effect. This method needs to use special R-type reactive dyes, and needs special winding machines as dyeing equipment, and the temperature required for fixing color is 100-110℃, which leads to high energy consumption.

[0008] The special dye dyeing method discloses a CN108396563A, and a kind of polycarboxylic acid type macromolecular dye is used for seaweed fiber / cotton fiber blend fabric padding dyeing process, the core of the application is to use polycarboxylic acid type macromolecular dye to dye blend fabric.Therein polycarboxylic acid type dye is dyed cotton fiber by the ester bond formed between it and cotton fiber, and polycarboxylic acid type dye is dyed seaweed fiber by the complex bond formed between metal ion and seaweed fiber;Realize the dyeing of polycarboxylic acid type dye to seaweed fiber / cotton fiber blend fabric;The deficiency of this method is that the synthesis process of polycarboxylic acid type special dye is complex, the structure of dye is different from the structure of existing general dye, the cost is higher and lacks industrial cooperation, and the application range is narrow.

[0009] Although the above method can dye seaweed fiber blend fabric, it has problems such as high cost, difficulty in industrial application, and damage to seaweed fiber, so there is an urgent need for a dyeing method that can dye seaweed fiber-containing blend fabric with good dyeing effect and less seaweed fiber loss and simple process. SUMMARY

[0010] To further solve the defects in the prior art, the present application provides a reactive dye dyeing method for seaweed fiber blend fabric, which realizes simple process flow and industrial application of blend fabric dyeing, and solves the problem of seaweed fiber blend fabric dyeing.

[0011] To achieve the above-mentioned purpose, the key technical problem to be solved is to impart dyeable ability to seaweed fiber and fibers such as cotton and wool blended with seaweed fiber without damaging the structure of seaweed fiber blend fabric.

[0012] To solve the above-mentioned technical problems, the present application adopts the following technical solutions:

[0013] A reactive dye dyeing method for seaweed fiber blend fabric, including pretreatment, dyeing, fixation and post-treatment in the dyeing process of blend fabric.

[0014] Further, the pretreatment refers to contacting and infiltrating seaweed fiber-containing blend fabric with auxiliary solution according to bath ratio 1:10-50 at 20-70 DEG C for 10-50 minutes, and then rinsing with water for 5-10 minutes to obtain pretreated fabric.

[0015] Further, the auxiliary agent in the auxiliary solution is one or more of potassium meta-aluminate, sodium meta-aluminate, barium meta-aluminate and potassium aluminum sulfate.

[0016] Further, the concentration of auxiliary agent in the auxiliary solution is 1-12 wt%.

[0017] Further, the seaweed fiber-containing blended fabric includes seaweed fiber / cotton, seaweed fiber / viscose, seaweed fiber / wool, seaweed fiber / silk, and seaweed fiber / cashmere fabric.

[0018] Further, the dyeing refers to: taking 1-4% of the seaweed fiber-containing blended fabric quality as active dyes, taking water as a bath ratio of 1:10-100 to prepare a dyeing solution, waiting for the dyeing solution to be heated to 30-40 DEG C, and then putting the pretreated blended fabric into the dyeing solution, and then heating the dyeing solution to 60-90 DEG C at a rate of 1-1.5 DEG C / min, and dyeing for 30-60 min.

[0019] Further, the active dyes include one or more of single active group dyes or multi-active group dyes containing ethylene sulfone active groups, halogenated s-triazine type, and halogenated pyrimidine type.

[0020] Further, the fixing refers to: preparing a fixing agent solution with a concentration of 1-10 g / L, and putting the dyed blended fabric into the fixing agent solution according to a bath ratio of 1:20-50, and fixing at 40-80 DEG C for 10-30 min.

[0021] Further, the fixing agent in the fixing agent solution is one or more of potassium aluminate, sodium aluminate, barium aluminate, and aluminum potassium sulfate.

[0022] Further, the post-treatment process refers to: soaking the fixed blended fabric in a neutral detergent with a concentration of 2-10 g / L, oscillating at 90-95 DEG C for 5-10 min, then washing in hot water at 40-50 DEG C, and then drying in an oven at 40-80 DEG C.

[0023] The application provides a dyed seaweed fiber-containing blended fabric prepared by the above method.

[0024] The application provides an application of the dyed seaweed fiber-containing blended fabric in the clothing field.

[0025] The application has the following beneficial effects:

[0026] The application has good industrial dyeing application performance, and can be dyed by commercial active dyes. The dyeing process is simple and easy to operate, the dyeing color is bright, the dyeing rate is high, and the fastness is good. The blended fabric maintains the original appearance during the dyeing process, and the seaweed fiber does not have obvious dissolution phenomenon. DETAILED DESCRIPTION

[0027] In order to make the advantages and technical solutions of the application more clear and explicit, the application will be described in detail below with specific examples.

[0028] Source of raw material: knitted fabric of blend of seaweed fiber: 80% cotton - 20% seaweed fiber, provided by Aumox Co. Ltd.

[0029] Example 1

[0030] An aqueous auxiliary solution of mass percentage (1% potassium metaaluminate + 2% potassium aluminum sulfate) was prepared, 5 g of seaweed fiber / cotton blend fabric to be dyed was put into the auxiliary solution according to a bath ratio of 1:20, and the seaweed fiber / cotton blend fabric was contacted and infiltrated at 20°C for 10 minutes, and then rinsed to obtain the pretreated seaweed fiber / cotton blend fabric.

[0031] Active Red 3BS was weighed according to 1% of the mass of the seaweed fiber / cotton blend fabric, and a dye liquor was prepared according to a bath ratio of 1:20, and the dye liquor was warmed to 30°C, and the pretreated seaweed fiber / cotton blend fabric was put into the dye liquor, and then the dye liquor was warmed to 60°C at a rate of 2°C / min, and the dyeing treatment was performed for 40 minutes.

[0032] Then, a solution of concentration (0.5 g / L potassium metaaluminate + 0.5 g / L potassium aluminum sulfate) was prepared as a fixing solution, and the dyed seaweed fiber / cotton blend fabric was put into the aqueous fixing agent solution, and fixing treatment was performed at 40°C for 10 minutes under a bath ratio of 1:50.

[0033] Then, the fixing treated seaweed fiber / cotton blend fabric was soaked in a neutral detergent with a concentration of 5 g / L, and oscillation treatment was performed at 95°C for 5 minutes, and washing was performed in hot water at 50°C, and the fabric was dried in an oven at 60°C to obtain the dyed seaweed fiber / cotton blend fabric.

[0034] Example 2

[0035] An aqueous auxiliary solution of mass percentage (3% potassium metaaluminate + 2% sodium metaaluminate) was prepared, 5 g of seaweed fiber / cotton blend fabric to be dyed was put into the auxiliary solution according to a bath ratio of 1:30, and the seaweed fiber / cotton blend fabric was contacted and infiltrated at 30°C for 20 minutes, and then rinsed to obtain the pretreated seaweed fiber / cotton blend fabric.

[0036] Active Yellow 3RS was weighed according to 2% of the mass of the seaweed fiber / cotton blend fabric, and a dye liquor was prepared according to a bath ratio of 1:30, and the dye liquor was warmed to 30°C, and the pretreated seaweed fiber / cotton blend fabric was put into the dye liquor, and then the dye liquor was warmed to 80°C at a rate of 2°C / min, and the dyeing treatment was performed for 50 minutes.

[0037] Then, an aqueous solution of concentration (2 g / L potassium metaaluminate + 3 g / L sodium metaaluminate) was prepared as a fixing solution, and the dyed seaweed fiber / cotton blend fabric was put into the aqueous fixing agent solution, and fixing treatment was performed at 50°C for 20 minutes under a bath ratio of 1:50.

[0038] The dyed seaweed fiber / cotton blended fabric is obtained by immersing the seaweed fiber / cotton blended fabric after the fixing treatment in a neutral detergent with a concentration of 5 g / L, oscillating treatment for 5 minutes at 95°C, washing in hot water at 50°C, and drying in an oven at 60°C.

[0039] Example 3

[0040] A barium metavanadate water-soluble auxiliary solution with a mass percentage of 10% is prepared, 5 g of seaweed fiber / cotton blended fabric to be dyed is put into the auxiliary solution according to a bath ratio of 1:40, and the seaweed fiber / cotton blended fabric is contacted and infiltrated at 30°C for 30 minutes, and then rinsed to obtain the pretreated seaweed fiber / cotton blended fabric.

[0041] Remazol blue RGB is weighed according to 1% of the mass of the seaweed fiber / cotton blended fabric, a dyeing solution is prepared according to a bath ratio of 1:50, the dyeing solution is heated to 30°C, the pretreated seaweed fiber / cotton blended fabric is put into the dyeing solution, and then the dyeing solution is heated to 90°C at a rate of 2°C / min, and the dyeing treatment is performed for 60 minutes.

[0042] Then a fixing solution of (2 g / L of barium metavanadate + 3 g / L of sodium metavanadate) with a concentration of 5 g / L is prepared, the dyed seaweed fiber / cotton blended fabric is put into the fixing solution, and fixing treatment is performed at 60°C according to a bath ratio of 1:50 for 30 minutes.

[0043] Then the seaweed fiber / cotton blended fabric after the fixing treatment is immersed in a neutral detergent with a concentration of 5 g / L, oscillated at 95°C for 5 minutes, washed in hot water at 50°C, and dried in an oven at 60°C to obtain the dyed seaweed fiber / cotton blended fabric.

[0044] Example 4

[0045] An auxiliary solution of (2% of potassium metavanadate + 1% of potassium aluminum sulfate) with a mass percentage is prepared, 5 g of seaweed fiber / silk blended fabric to be dyed is put into the auxiliary solution according to a bath ratio of 1:20, and the seaweed fiber / silk blended fabric is contacted and infiltrated at 20°C for 10 minutes, and then rinsed to obtain the pretreated seaweed fiber / cotton blended fabric.

[0046] Drimaren Red X-6BN is weighed according to 1% of the mass of the seaweed fiber / silk blended fabric, a dyeing solution is prepared according to a bath ratio of 1:20, the dyeing solution is heated to 30°C, the pretreated seaweed fiber / silk blended fabric is put into the dyeing solution, and then the dyeing solution is heated to 80°C at a rate of 2°C / min, and the dyeing treatment is performed for 40 minutes.

[0047] A solution of concentration (0.5 g / L potassium meta-aluminate + 0.5 g / L potassium aluminum sulfate) was prepared as a fixing solution, and the dyed seaweed fiber / cotton blended fabric was put into the above fixing agent aqueous solution, and fixing treatment was carried out at 60°C for 10 minutes under a bath ratio of 1:50.

[0048] The fixing treated seaweed fiber / cotton blended fabric was soaked in a neutral detergent with a concentration of 5 g / L, and oscillation treatment was carried out at 95°C for 5 minutes, and then washed in hot water at 50°C, and dried in an oven at 60°C to obtain the dyed seaweed fiber / cotton blended fabric.

[0049] Example 5

[0050] An auxiliary solution of mass percentage (3% potassium meta-aluminate + 2% potassium aluminum sulfate) was prepared, and 5 g of seaweed fiber / silk blended fabric to be dyed was put into the above auxiliary solution according to a bath ratio of 1:30, and then contacted and infiltrated at 30°C for 20 minutes, and then rinsed to obtain the pretreated seaweed fiber / cotton blended fabric.

[0051] Drimaren Yellow X-4RN was weighed according to 2% of the mass of the seaweed fiber / silk blended fabric, and a dye liquor was prepared according to a bath ratio of 1:30, and then the pretreated seaweed fiber / silk blended fabric was put into the dye liquor when the dye liquor was warmed to 30°C, and then the dye liquor was warmed to 90°C at a rate of 2°C / min, and dyeing treatment was carried out for 50 minutes.

[0052] A solution of concentration (2 g / L potassium meta-aluminate + 3 g / L potassium aluminum sulfate) was prepared as a fixing solution, and the dyed seaweed fiber / silk blended fabric was put into the above fixing agent aqueous solution, and fixing treatment was carried out at 70°C for 20 minutes under a bath ratio of 1:50.

[0053] The fixing treated seaweed fiber / silk blended fabric was soaked in a neutral detergent with a concentration of 5 g / L, and oscillation treatment was carried out at 95°C for 5 minutes, and then washed in hot water at 50°C, and dried in an oven at 60°C to obtain the dyed seaweed fiber / cotton blended fabric.

[0054] Example 6

[0055] An auxiliary solution of mass percentage 10% of barium meta-aluminate was prepared, and 5 g of seaweed fiber / silk blended fabric to be dyed was put into the above auxiliary solution according to a bath ratio of 1:40, and then contacted and infiltrated at 30°C for 30 minutes, and then rinsed to obtain the pretreated seaweed fiber / cotton blended fabric.

[0056] Drimaren Blue X-BLN was weighed as 1% of the mass of seaweed fiber / silk blended fabric, and a dyeing solution was prepared according to a bath ratio of 1:50. The dyeing solution was warmed to 30°C, and the pretreated seaweed fiber / silk blended fabric was put into the dyeing solution. Then, the dyeing solution was warmed to 90°C at a rate of 2°C / min, and the dyeing treatment was performed for 60 min.

[0057] Then, a fixing solution with a concentration of 2 g / L of barium metavanadate was prepared, and the dyed seaweed fiber / silk blended fabric was put into the fixing solution. The fixing treatment was performed for 30 min at 80°C with a bath ratio of 1:50.

[0058] The fixing treated seaweed fiber / silk blended fabric was soaked in a neutral detergent with a concentration of 5 g / L, and the oscillation treatment was performed for 5 min at 95°C. Then, the fabric was washed in hot water at 50°C and dried in an oven at 60°C to obtain the dyed seaweed fiber / cotton blended fabric.

[0059] Example 7

[0060] A water-soluble auxiliary solution with a mass percentage of 2% of sodium metavanadate and 1% of potassium aluminum sulfate was prepared, and 5 g of seaweed fiber / wool blended fabric to be dyed was put into the auxiliary solution according to a bath ratio of 1:40. The contact and infiltration were performed for 30 min at 30°C, and then the fabric was rinsed to obtain the pretreated seaweed fiber / cotton blended fabric.

[0061] Drimaren Blue X-BLN was weighed as 1% of the mass of seaweed fiber / wool blended fabric, and a dyeing solution was prepared according to a bath ratio of 1:50. The dyeing solution was warmed to 30°C, and the pretreated seaweed fiber / wool blended fabric was put into the dyeing solution. Then, the dyeing solution was warmed to 60°C at a rate of 2°C / min, and the dyeing treatment was performed for 40 min.

[0062] Then, a fixing solution with a concentration of 0.5 g / L of sodium metavanadate and 0.5 g / L of potassium aluminum sulfate was prepared, and the dyed seaweed fiber / wool blended fabric was put into the fixing solution. The fixing treatment was performed for 30 min at 80°C with a bath ratio of 1:50.

[0063] The fixing treated seaweed fiber / wool blended fabric was soaked in a neutral detergent with a concentration of 5 g / L, and the oscillation treatment was performed for 5 min at 95°C. Then, the fabric was washed in hot water at 50°C and dried in an oven at 60°C to obtain the dyed seaweed fiber / cotton blended fabric.

[0064] Example 8

[0065] A water soluble auxiliary solution of 3% meta-aluminiunm potassium sulfate and 2% potassium aluminum sulfate was prepared. 5 g of seaweed fiber / wool blended fabric to be dyed was introduced into the auxiliary solution at a bath ratio of 1:20, and was contacted and soaked at 20°C for 10 minutes, and then was rinsed to obtain a pretreated seaweed fiber / cotton blended fabric.

[0066] Drimaren Yellow X-4RN was weighed according to 1% of the mass of the seaweed fiber / wool blended fabric, and a dye liquor was prepared at a bath ratio of 1:20. When the dye liquor was warmed to 30°C, the pretreated seaweed fiber / wool blended fabric was introduced into the dye liquor, and then the dye liquor was warmed to 80°C at a rate of 2°C / min, and was dyed for 50 minutes.

[0067] A fixing solution of 1 g / L meta-aluminiunm potassium sulfate and 1 g / L potassium aluminum sulfate was then prepared, and the dyed seaweed fiber / wool blended fabric was introduced into the water solution of the fixing agent, and was fixed at 60°C for 10 minutes at a bath ratio of 1:50.

[0068] The fixed seaweed fiber / wool blended fabric was soaked in a neutral detergent with a concentration of 5 g / L, was shaken at 95°C for 5 minutes, was washed in hot water at 50°C, and was dried in an oven at 60°C to obtain dyed seaweed fiber / cotton blended fabric.

[0069] Example 9

[0070] A water soluble auxiliary solution of 10% meta-aluminiunm potassium sulfate was prepared. 5 g of seaweed fiber / wool blended fabric to be dyed was introduced into the auxiliary solution at a bath ratio of 1:20, and was contacted and soaked at 20°C for 10 minutes, and then was rinsed to obtain a pretreated seaweed fiber / cotton blended fabric.

[0071] Drimaren Red X-6BN was weighed according to 1% of the mass of the seaweed fiber / wool blended fabric, and a dye liquor was prepared at a bath ratio of 1:20. When the dye liquor was warmed to 30°C, the pretreated seaweed fiber / wool blended fabric was introduced into the dye liquor, and then the dye liquor was warmed to 90°C at a rate of 2°C / min, and was dyed for 60 minutes.

[0072] A fixing solution of 2 g / L meta-aluminiunm potassium sulfate was then prepared, and the dyed seaweed fiber / wool blended fabric was introduced into the water solution of the fixing agent, and was fixed at 60°C for 10 minutes at a bath ratio of 1:50.

[0073] The fixed seaweed fiber / wool blended fabric was soaked in a neutral detergent with a concentration of 5 g / L, was shaken at 95°C for 5 minutes, was washed in hot water at 50°C, and was dried in an oven at 60°C to obtain dyed seaweed fiber / cotton blended fabric.

[0074] Example 10

[0075] Reference is made to Example 1, wherein only the mass concentration of potassium metaaluminate and potassium aluminum sulfate in the auxiliary solution is adjusted to 6% and 6% respectively, and the preparation is carried out.

[0076] Comparative Example 1

[0077] An auxiliary solution of aluminum sulfate with a mass percentage of 3% is prepared, 5 g of seaweed / cotton blended fabric to be dyed is put into the above auxiliary solution according to a bath ratio of 1:20, and the seaweed / cotton blended fabric is contacted and infiltrated at 20°C for 10 minutes, and then rinsed to obtain the pretreated seaweed / cotton blended fabric.

[0078] Active Red 3BS is weighed according to 1% of the mass of the seaweed / cotton blended fabric, and a dyeing solution is prepared according to a bath ratio of 1:20, and the dyeing solution is heated to 30°C, and the pretreated seaweed / cotton blended fabric is put into the dyeing solution, and then the dyeing solution is heated to 60°C at a rate of 2°C / min, and the dyeing treatment is carried out for 40 minutes.

[0079] Then an aluminum sulfate solution with a concentration of 1 g / L is prepared as a fixing solution, and the dyed seaweed / cotton blended fabric is put into the above aqueous fixing agent solution, and the fixing treatment is carried out at 40°C for 10 minutes according to a bath ratio of 1:50.

[0080] Then the fixing treated seaweed / cotton blended fabric is soaked in a neutral detergent with a concentration of 5 g / L, and the oscillation treatment is carried out at 95°C for 5 minutes, and then washed in hot water at 50°C, and dried in an oven at 60°C to obtain the dyed seaweed / cotton blended fabric.

[0081] The properties of the dyed seaweed / cotton blended fabric obtained in Examples 1-10 and Comparative Example 1 are shown in Table 1.

[0082] Table 1 Properties of dyed seaweed / cotton blended fabric

[0083]

[0084] It should be noted that the above examples are only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application. Some non-essential improvements and adjustments made by those skilled in the art according to the guidance of the above application content still belong to the protection scope of the present application.

Claims

1. A method for dyeing seaweed fiber blended fabrics with reactive dyes, characterized in that, The method includes pretreatment, dyeing, color fixing and post-treatment in the dyeing process of blended fabrics; Pretreatment refers to: contacting and immersing the seaweed fiber blended fabric with the auxiliary agent solution at a bath ratio of 1:10-50 at 20-70℃ for 10-50 minutes, and then rinsing with clean water for 5-10 minutes to obtain the pretreated fabric. The additives in the additive solution are one or more of the following: potassium aluminate, sodium aluminate, barium aluminate, and potassium aluminum sulfate. The dyeing process involves: weighing out reactive dyes at 1%-4% of the weight of the seaweed fiber blended fabric, weighing out water at a liquor ratio of 1:10-100 to prepare a dyeing solution, heating the dyeing solution to 30-40°C, immersing the pretreated blended fabric in the dyeing solution, and then heating the dyeing solution to 60-90°C at a rate of 1-1.5°C / min for 30-60 minutes. The aforementioned color fixing refers to: preparing a color fixing agent solution with a concentration of 1-10 g / L, immersing the dyed blended fabric in the color fixing agent solution at a liquor ratio of 1:20-50, and fixing the color at 40-80℃ for 10-30 minutes. The fixing agent in the fixing agent solution is one or more of potassium aluminate, sodium aluminate, barium aluminate, and potassium aluminum sulfate.

2. The method according to claim 1, characterized in that, The concentration of the auxiliary agent in the auxiliary agent solution is 1-12 wt%.

3. The method according to claim 1, characterized in that, The seaweed fiber blended fabrics include seaweed fiber / cotton, seaweed fiber / viscose, seaweed fiber / wool, seaweed fiber / silk, and seaweed fiber / cashmere fabrics.

4. The method according to claim 1, characterized in that, Reactive dyes include one or more of the following: single-reactive dyes or multi-reactive dyes containing vinyl sulfone reactive groups, halogenated triazine dyes, or halogenated pyrimidine dyes.

5. The method according to claim 1, characterized in that, The post-treatment process refers to: immersing the color-fixed blended fabric in a neutral detergent solution with a concentration of 2-10 g / L, shaking it at 90-95°C for 5-10 minutes, washing it in hot water at 40-50°C, and then drying it in an oven at 40-80°C.

6. The dyed seaweed fiber blended fabric prepared by the method according to any one of claims 1 to 5.

7. The application of the dyed seaweed fiber blended fabric as described in claim 6 in the field of clothing.

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