CN104652140B - A kind of colouring method of wig composite fibre - Google Patents

Abstract

The invention provides a method for dyeing composite fibers for wigs. The method comprises steps of preparing a dyeing liquid, dyeing the composite fibers, and post-treatment after dyeing, wherein the dyeing liquid contains a dye and a composite anti-swelling agent, The composition of the composite anti-swelling agent according to weight percent is: 40-60% of acetic acid, 35-40% of small molecule dialdehyde, 5-15% of boric acid, and 0-5% of inorganic sodium salt. In the dyeing method of the present invention, the acid dye is selected and used in combination with the composite anti-swelling agent, which effectively improves the destructive swelling behavior of the composite fiber during dyeing, ensures the modulus of the fiber used for wigs, and improves the mechanical properties of the composite fiber at the same time. Intensity, the dyeing method of the present invention has simple operation process, less pollution, the dyeing rate of the dyed fiber is over 95%, and the color fastness and color of the dyed fiber are good.

Description

A kind of dyeing method of composite fiber for wig

technical field

The invention relates to a dyeing method of composite fibers for wigs, in particular to a dyeing method of seaweed/krill protein composite fibers, including the selection of corresponding auxiliary agents in the dyeing process, and belongs to the technical field of fiber dyeing.

Background technique

In recent years, biodegradable green fibers using various natural biomass as raw materials have been widely studied at home and abroad. Sodium alginate has attracted widespread attention because of its high oxygen permeability, high moisture absorption, flame retardancy, non-toxicity, and biodegradability. . Seaweed/krill protein composite fiber is a new type of green biodegradable fiber obtained by solidifying into silk in the presence of divalent metal ions by using wet spinning forming technology. The fiber not only has good flame retardancy of seaweed fiber The performance also has the beautiful color and comfortable feel of protein fiber.

Seaweed/krill protein composite artificial wig fibers have a modulus and strength comparable to real hair, are non-toxic, and have excellent flame retardant properties. They can be dyed to make various wig products that meet market demand. They are ideal for making wigs. It is an ideal material for use, but the current objective problem is that there is a serious destructive swelling phenomenon in the dyeing process of this type of composite fiber, which makes the fiber lose its original modulus and mechanical strength, and its practical value is lost. At the same time, the fiber used for wigs The diameter (about 70-80μm) is thicker than that of conventional fibers (about 10-20μm), and it is difficult to guarantee the uniformity of dyeing by conventional dyeing methods. At present, there is no dyeing method for composite fibers (such as seaweed/krill protein composite fibers) for wigs that can solve the above problems.

Contents of the invention

In view of the destructive swelling behavior of seaweed/krill protein composite artificial wig fibers in the dyeing process and the poor dyeing uniformity of traditional wig fibers, the purpose of the present invention is to provide a method for dyeing composite fibers for wigs. This method creatively proposes to use a compound anti-swelling agent and dyeing solution to dye wig fibers under the condition of ultrasonic vibration, so that the modulus and strength of the fibers can be guaranteed during the dyeing process, and the reliability of the composite fibers can be enhanced. practicability, and the dyeing of the composite fiber obtained by dyeing is as high as 95%, and the fiber is evenly dyed, and the color is bright and bright.

The purpose of the present invention is achieved through the following technical solutions:

A method for dyeing composite fibers for wigs, comprising steps of preparing a dyeing solution, dyeing the composite fibers, and post-dyeing post-treatment steps, wherein the dyeing solution contains a dye and a composite anti-swelling agent, which are described by weight percentage The composition of the compound anti-swelling agent is: 40-60% of acetic acid, 35-40% of small molecule dialdehyde, 5-15% of boric acid, and 0-5% of inorganic sodium salt.

In the above technical solution, the small molecule dialdehyde is preferably one or a mixture of glutaraldehyde and succinic dialdehyde, more preferably glutaraldehyde.

In all above-mentioned technical schemes, described inorganic sodium salt is preferably the mixture of one or more of sodium acetate, sodium chloride, sodium sulfate, more preferably one of sodium acetate and sodium chloride or its mixture, most preferably sodium acetate.

In all the above-mentioned technical solutions, the preparation step of the dyeing solution is preferably: the dye of 1-2% of the weight of the composite fiber is dissolved in deionized water to obtain solution A, and the composite anti-swelling agent is added to the solution A, and the mixture is evenly mixed. Incubate in a constant temperature water bath at 50-80°C for 10-30 minutes to obtain a dyeing solution; wherein the composite anti-swelling agent accounts for 20-50% by weight percentage in the dyeing solution, and solution A accounts for 50-80%; the total weight of the dyeing solution 20-50 times the weight of the composite fiber.

In all the above-mentioned technical solutions, the dyeing step of the composite fiber is preferably: placing the formed composite fiber in the prepared dyeing solution, and ultrasonically vibrating dyeing in a water bath at a constant temperature of 50-80°C for 40-120min, wherein The total weight of the dyeing solution is 20-50 times that of the composite fiber.

In all the above-mentioned technical solutions, the post-treatment step after dyeing is preferably: washing the dyed composite fiber with water for 3-4 times, dehydrating, and drying under tense conditions, wherein the drying temperature is 80-120℃; the drying time can be determined according to the moisture content of the dry basis of the fiber. Generally, it is dried until the moisture content of the dry basis is less than 4%. Under this condition, the shrinkage of the composite fiber can be controlled at 0-1%.

The present invention also provides the preferred technical scheme of the dyeing method of the above-mentioned composite fiber for wig, comprising the following steps:

(1) Preparation of dyeing solution: 1-2% dyestuff of composite fiber weight is dissolved in deionized water to obtain solution A. Add composite anti-swelling agent in solution A, mix evenly, and keep warm in a constant temperature water bath of 50-80°C for 10 -30min, to obtain the dyeing solution; wherein in the dyeing solution, the composite anti-swelling agent accounts for 20-50% by weight percentage, and the solution A accounts for 50-80%; the total weight of the dyeing solution is 20-50 times of the weight of the composite fiber;

(2) Dyeing of composite fiber: place the formed composite fiber in the dyeing solution prepared in step (1), and dye it by ultrasonic vibration in a constant temperature water bath at 50-80°C for 40-120min, wherein the total weight of the dyeing solution is 20-50 times the fiber weight;

(3) Post-treatment after dyeing: wash the composite fiber dyed in step (2) with water for 3-4 times, dehydrate, dry at 80-120°C under stressful conditions, and dry until the moisture content on a dry basis is below 4% .

In the above-mentioned technical solution of the present invention, in the post-treatment process after the composite fiber is dyed, the dyed composite fiber is washed 3-4 times with water, wherein the washing water can be distilled water or tap water, more preferably tap water, which is beneficial to reduce costs.

In the above technical solution of the present invention, the drying under stress refers to drying in the presence of stress, that is, applying appropriate stress to both ends of the fiber, which is beneficial to prevent the fiber from shrinking during the drying process. The tension applied in the present invention is controlled within the range of 0.1-0.25CN/dtex. If the tension is too high, the fibers will be broken and broken threads will appear. If the tension is too small, it is not conducive to controlling the shrinkage.

In the above-mentioned technical solution of the present invention, for the said dyes, acid dyes, basic dyes, disperse dyes and cationic dyes currently used for fiber dyeing are all suitable for use, among which acid dyes are preferred.

In the above technical solution of the present invention, the composite fiber is preferably a composite fiber for wigs, more preferably a composite fiber containing seaweed. The composite fiber containing seaweed is sodium alginate/Antarctic krill protein composite fiber, alginic acid/gelatin blended fiber, alginic acid/viscose blended fiber, sodium alginate/soy protein isolate blended fiber, seaweed Sodium Alginate/Carboxymethyl Fiber Blend Fiber, Sodium Alginate/Chitosan Blend Fiber, Sodium Alginate/Cellulose Blend Fiber.

In the present invention, the small molecule dialdehyde (such as glutaraldehyde) of the composite anti-swelling agent cross-links with the carboxyl and hydroxyl groups on the surface of the composite fiber at a certain temperature in the presence of acetic acid to prevent the internal diffusion of water molecules, thereby Play the purpose of anti-swelling.

Beneficial effects of the present invention:

The invention provides an artificial wig dyeing method. The dyeing method of the invention aims at the destructive swelling behavior of this type of composite fiber in the dyeing process and the problem of poor dyeing uniformity of traditional wig fibers. During the preparation of the dyeing solution, add Composite anti-swelling agent with specific composition and ratio, that is, the combination of dye and anti-swelling agent to solve the destructive swelling during the dyeing process of seaweed/krill protein composite fiber, which ensures the modulus and strength that the wig fiber should have. And in the dyeing process of composite fibers, ultrasonic vibration dyeing is used, which effectively solves the problem of poor dyeing uniformity of wigs in the past. In addition, the dyeing method of the present invention adopts the drying treatment technology of the dyed wig fiber under stress conditions, so that the shrinkage rate of the fiber during the dyeing process is effectively controlled within 0-1%. In a word, by adopting the dyeing method of the present invention, the dyed fiber has a dye uptake rate of over 95%, a color fastness of more than three grades, and the dyed fiber is evenly dyed, bright and bright in color.

Description of drawings

Figure 1 is a picture of the dyed sodium alginate/Antarctic krill protein composite fiber; wherein fibers No. 1 to No. 4 are respectively the sodium alginate/Antarctic krill protein composite dyed by the methods of Examples 2, 4, 1 and 3 fiber.

detailed description

In order to make the object, scheme, flow process and advantages of the present invention clearer, the dyeing and finishing process of the present invention will be described in further detail in conjunction with the accompanying drawings and examples. Invention is not intended to limit the present invention. In the following examples, unless otherwise specified, the experimental methods used are conventional methods, and the materials and reagents used can be purchased from biological or chemical companies.

Materials used in the following examples:

Sodium alginate/Antarctic krill protein composite fiber: using the method provided in Guo Jing et al., Extraction of Antarctic krill protein and its composite fiber[J], Journal of Dalian University of Technology, 2014,33(4)270-273 to prepare.

Example 1

The dyeing method of sodium alginate/Antarctic krill protein composite fiber comprises the steps:

(1) Preparation of staining solution

Dissolve 1% of the weight of the composite fiber in deionized water to obtain solution A, add a composite anti-swelling agent to solution A, mix well to make the dyeing solution acidic, and keep it warm in a constant temperature water bath at 80°C for 30 minutes to obtain Dyeing solution; wherein in the dyeing solution, the composite anti-swelling agent accounts for 50% by weight percentage, and solution A accounts for 80%; the total weight of the dyeing solution is 20 times the weight of the composite fiber;

in:

The composition of the composite anti-swelling agent is: based on the total weight of the composite anti-swelling agent, acetic acid accounts for 40%, glutaraldehyde accounts for 40%, boric acid accounts for 15%, and sodium acetate accounts for 5%;

(2) Dyeing

Add the formed sodium alginate/Antarctic krill protein composite fiber to the dyeing solution in step (1), and dye with ultrasonic vibration in a constant temperature water bath at 80°C for 40 minutes;

(3) post-treatment process

Take out the sodium alginate/Antarctic krill protein composite fiber dyed in step (2), rinse it with tap water for 3-4 times at room temperature, dehydrate, and dry it under stressful conditions at 80°C, dry basis of the composite fiber The moisture content is less than 4%, and the shrinkage rate is controlled within 1%.

The sodium alginate/Antarctic krill protein composite fiber obtained after dyeing and drying has a dyeing rate of 95.71%, and a color fastness of three grades. The dyed fiber has uniform color and bright luster; the strength of the composite fiber is 2.54CN/ dtex, the modulus is 52.40CN/dtex.

Example 2

The dyeing method of sodium alginate/Antarctic krill protein composite fiber comprises the steps:

(1) Preparation of staining solution

Dissolve acid Hulan A with 2% weight of the composite fiber in deionized water to obtain solution A. Add composite anti-swelling agent to solution A and mix evenly to make the dyeing solution acidic. Heat it in a constant temperature water bath at 50°C for 10 minutes to obtain dyeing solution; wherein in the dyeing solution, the composite anti-swelling agent accounts for 20% by weight percentage, and the solution A accounts for 80%; the total weight of the dyeing solution is 50 times the weight of the composite fiber;

in:

The composite anti-swelling agent is composed of: based on the total weight of the composite anti-swelling agent, acetic acid accounts for 60%, glutaraldehyde accounts for 35%, and boric acid accounts for 5%;

(2) Dyeing

Add the formed sodium alginate/Antarctic krill protein composite fiber to the dyeing solution in step (1), and dye with ultrasonic vibration in a constant temperature water bath at 50°C for 120 minutes;

(3) post-treatment process

Take out the sodium alginate/Antarctic krill protein composite fiber dyed in step (2), rinse it with tap water for 3-4 times at room temperature, dehydrate, and dry it under stressful conditions at 120°C, dry basis of the composite fiber The moisture content is less than 4%, and the shrinkage rate is controlled within 1%.

The sodium alginate/Antarctic krill protein composite fiber obtained after dyeing and drying has a dyeing rate of 94.20%, and a color fastness of grade 4. The dyed fiber has uniform color and bright luster; the strength of the composite fiber is 2.64CN/ dtex, the modulus is 56.63CN/dtex

Example 3

The dyeing method of sodium alginate/Antarctic krill protein composite fiber comprises the steps:

(1) Preparation of staining solution

Dissolve 2% of the weight of composite fibers in deionized water to obtain solution A. Add composite anti-swelling agent to solution A and mix evenly to make the dyeing solution acidic. Heat it in a constant temperature water bath at 60°C for 20 minutes to obtain dyeing solution; wherein in the dyeing solution, the composite anti-swelling agent accounts for 40% by weight percentage, and the solution A accounts for 50%; the total weight of the dyeing solution is 30 times the weight of the composite fiber;

in:

The composite anti-swelling agent is composed of: based on the total weight of the composite anti-swelling agent, acetic acid accounts for 50%, glutaraldehyde accounts for 35%, boric acid accounts for 13%, and sodium sulfate accounts for 2%;

(2) Dyeing

Add the formed sodium alginate/Antarctic krill protein composite fiber to the dyeing solution in step (1), and dye with ultrasonic vibration in a constant temperature water bath at 60°C for 60 minutes;

(3) post-treatment process

Take out the sodium alginate/Antarctic krill protein composite fiber dyed in step (2), rinse 3-4 times with tap water at room temperature, dehydrate, and dry under stressful conditions. The drying temperature is 90°C, and the shrinkage rate is controlled. within 1%.

The sodium alginate/Antarctic krill protein composite fiber obtained after drying after dyeing has a dyeing rate of 90.4%, and a color fastness of three grades. The dyed fiber has uniform color and bright luster; the strength of the composite fiber is 2.51CN/ dtex, the modulus is 55.41CN/dtex

Example 4

The dyeing method of sodium alginate/Antarctic krill protein composite fiber comprises the steps:

(1) Preparation of staining solution

Dissolve Acid Red B with 1% of the weight of the composite fiber in deionized water to obtain solution A, add a composite anti-swelling agent to solution A, mix well to make the dyeing solution acidic, and keep it warm in a constant temperature water bath at 80°C for 30 minutes to obtain the dyeing solution ; wherein in the dyeing solution, the composite anti-swelling agent accounts for 50% by weight percentage, and the solution A accounts for 70%; the total weight of the dyeing solution is 20 times the weight of the composite fiber;

in:

The composite anti-swelling agent is composed of: based on the total weight of the composite anti-swelling agent, acetic acid accounts for 50%, glutaraldehyde accounts for 38%, boric acid accounts for 7%, sodium sulfate accounts for 2%, and sodium acetate accounts for 3%;

(2) Dyeing

Add the formed sodium alginate/Antarctic krill protein composite fiber to the dyeing solution in step (1), and dye with ultrasonic vibration in a constant temperature water bath at 80°C for 90 minutes;

(3) post-treatment process

Take out the sodium alginate/Antarctic krill protein composite fiber dyed in step (2), rinse 3-4 times with tap water at room temperature, dehydrate, and dry under stressful conditions. The drying temperature is 100°C, and the shrinkage rate is controlled. within 1%.

The sodium alginate/Antarctic krill protein composite fiber obtained after dyeing and drying has a dyeing rate of 95.42%, and a color fastness of three grades. The dyed fiber has uniform color and bright luster; the strength of the composite fiber is 2.64CN/ dtex, the modulus is 50.22CN/dtex

The above is only the preferred dyeing process and implementation mode of this patent, but the scope of protection of the present invention is not limited thereto, anyone familiar with the technical field can easily think of changes within the technical scope disclosed in the present invention and replacement should be covered within the protection scope of the present invention, so the protection scope of the present invention should be based on the protection scope of the claims.

Claims (6)

1. a kind of dyeing method of composite fiber for wig, comprise the preparation step of dyeing solution, the dyeing step of composite fiber and the aftertreatment step after dyeing, it is characterized in that, contain dyestuff and composite anti-swelling agent in dyeing solution, by weight The composition of the composite anti-swelling agent in percentage content is: 40-60% of acetic acid, 35-40% of small molecule dialdehyde, 5-15% of boric acid, and 0-5% of inorganic sodium salt; The preparation steps of the dyeing solution are as follows: 1-2% of the dyestuff by weight of the composite fiber is dissolved in deionized water to obtain a solution A, and a composite anti-swelling agent is added to the solution A, mixed evenly, and heated in a constant temperature water bath at 50-80°C. 10-30min in medium heat preservation, obtain dyeing solution; wherein in the dyeing solution, the composite anti-swelling agent accounts for 20-50% by weight percentage, and solution A accounts for 50-80%; the total weight of the dyeing solution is 20-50% of the composite fiber weight times; The dyeing step of the composite fiber is as follows: placing the formed composite fiber in the prepared dyeing solution, and ultrasonically oscillating and dyeing for 40-120 minutes in a constant temperature water bath at 50-80°C, wherein the total weight of the dyeing solution is 1/2 of the weight of the composite fiber. 20-50 times; The post-treatment steps after dyeing are as follows: washing the dyed composite fiber with water for 3-4 times, dehydrating, and drying under tense conditions until the moisture content of the dry basis is below 4%. 2. The dyeing method according to claim 1, characterized in that, the small molecule dialdehyde is one or a mixture of glutaraldehyde and succinaldehyde. 3. dyeing method according to claim 1, is characterized in that, described inorganic sodium salt is one or more mixtures in sodium acetate, sodium chloride, sodium sulfate. 4. The dyeing method according to claim 1, characterized in that, the drying temperature is 80-120°C. 5. The dyeing method according to any one of claims 1 to 4, wherein the composite fiber for a wig is a composite fiber containing seaweed. 6. dyeing method according to claim 5, is characterized in that, described composite fiber containing seaweed is sodium alginate/Antarctic krill protein composite fiber, alginic acid/gelatin blend fiber, alginic acid/viscose Blended fiber, sodium alginate/soy protein isolate blended fiber, sodium alginate/carboxymethyl fiber blended fiber, sodium alginate/chitosan blended fiber, sodium alginate/cellulose blended fiber.