CN106192463B - A kind of protein fibre fabric natural dye ecology printing method - Google Patents

Abstract

The invention discloses a kind of protein fibre fabric natural dye ecology printing method, comprise the following steps：The pretreatment of protein fibre fabric；Natural dye is added in tetraethylene glycol and nonionic surfactant AEO3, is well mixed, then with a small amount of deionized water dissolving, natural dye solution is made；Citric acid, tannic acid are dissolved with a small amount of water respectively, citric acid solution and tannic acid solution is made；The former paste of stamp is added in enamel beaker, the natural dye solution and the citric acid solution is separately added with agitation, is eventually adding the tannic acid solution, stirs, print paste is made；The pretreatment protein fibre fabric is processed according to the printing technology of routine using the print paste.This method does not use textile printing process of the urea as additive, while ensureing to obtain excellent printing quality, reduces the influence to environment, improves the ecological of whole dyeing and printing process.

Description

A kind of protein fiber fabric natural dye ecological printing method

technical field

The invention belongs to the technical field of textile printing and dyeing, and relates to an ecological printing method for protein fiber fabrics with natural dyes.

Background technique

When textile fabrics are used in clothing and home textile products, in order to obtain bright colors and rich patterns, different dyes must be used for dyeing or printing. The development of synthetic dyes has brought us convenient and fast printing and dyeing processing technology and a colorful world. However, the high chemical stability and low biodegradability of synthetic dyes increase the difficulty of printing and dyeing wastewater treatment and aggravate the pollution of the ecological environment. The harm of synthetic dyes to the human body has also become increasingly prominent. Natural dyes have good compatibility with the environment, are biodegradable, non-toxic and harmless, non-allergic and carcinogenic to the skin, meet the ecological requirements of textiles, and have obvious advantages in the development of high-grade ecological textiles. In recent years, the related research on the application of natural dyes in textile dyeing and printing has been extensive.

Printing is a process in which dyes form patterns of different colors on fabrics. In the printing color paste, due to the large amount of dye used and the small amount of water used, the solubility of the dye becomes poor, and the aggregation of the dyes is easy to occur, which will affect the printing effect. Therefore, urea is generally added to the conventional printing color paste to improve the solubility of the dye. , The water content on the fiber during steaming, the permeability of the dye to the inside of the fiber and the fixation rate of the dye on the fiber, thereby improving the color yield of the printed fabric. However, the ammonia nitrogen compounds decomposed by urea in wastewater will accelerate the growth of algae and affect the ecological environment. However, the "Water Pollutant Discharge Standards for Textile Dyeing and Finishing Industry" promulgated by the state has strict restrictions on ammonia nitrogen compounds in printing and dyeing wastewater. As a printing process of natural dyes, it is necessary to avoid the use of urea and other environmentally polluting additives, which requires further innovation.

Contents of the invention

The purpose of the present invention is to provide a method for ecological printing of protein fiber fabrics with natural dyes, which does not use urea as an additive, which can reduce the impact on the environment while ensuring the excellent printing effect, and improve the efficiency of the entire printing and dyeing process. ecological.

Technical scheme of the present invention is:

A kind of protein fiber fabric natural dye ecological printing method, the method comprises the steps:

(1) Pretreatment of protein fiber fabrics: add protein fiber fabrics to pretreatment containing 0.2～1.5g/L alum, 0.2～1.0g/L nonionic surfactant AEO9, 0.5～2.0g/L sodium pyrrolidone carboxylate In the treatment bath, adjust the pH to 5, control the bath ratio to 1:50, and raise the temperature to 60°C for 45 minutes of pretreatment. After the end, take out the protein fiber fabric, dehydrate it, and dry it at 80-100°C to obtain the pretreated protein fiber fabric ;

(2) natural dye is added in tetraethylene glycol and nonionic surfactant AEO3, mixes evenly, then dissolves with a small amount of deionized water, makes natural dye solution; Dissolves citric acid, tannic acid with a small amount of water respectively, Prepare citric acid solution and tannic acid solution; add the original printing paste into an enamel beaker, add the natural dye solution and the citric acid solution respectively under stirring, finally add the tannic acid solution, stir evenly, and prepare Get printing paste,

Wherein, by weight percentage, the composition of the printing paste is: 50-80% of printing paste, 18-40% of water, 0.5-5.0% of natural dye, 0.2-1.0% of non-ionic surfactant AEO, four sweeteners Alcohol 0.5-2.0%, citric acid 0.2-1.0%, tannic acid 0.5-3.0%, the sum of the above components is 100%;

(3) The pretreated protein fiber fabric is printed, dried, steamed, washed with water and dried according to a conventional printing process by using the printing color paste.

Further, the protein fiber fabric in step (1) is any one of silk fabrics, wool fabrics, and blended fabrics containing silk or wool.

Further, the natural dyes described in step (2) are any of shellac pigment, cochineal red pigment, chestnut shell pigment, sorghum red pigment, red rice red pigment, curcumin, safflower yellow pigment, gardenia yellow pigment one or more.

Further, the tannic acid described in the step (2) is obtained by extracting from Galla galla.

Further, the original printing paste in step (2) is any one of synthetic dragon gum paste, guar gum paste or a mixture of the two, and the solid content of the original printing paste is 5-10%. wt.

The advantages of the present invention are:

(1) Additives such as urea and ammonia nitrogen compounds that will be decomposed in wastewater are not used to reduce the impact of wastewater on the environment. The natural dyes and additives used are all ecological chemicals, so that the entire processing process and final products meet ecological requirements.

(2) Sodium pyrrolidone carboxylate is added to the pretreatment bath. While conforming to the conventional pre-mordanting of natural dyes, a small amount of sodium pyrrolidone carboxylate is introduced into the fabric, which greatly increases the water content of the fabric during steaming after printing, which is beneficial to natural dyes. The penetration of fibers is conducive to attracting the transfer of dyes to fibers.

(3) Use non-ionic surfactants and tetraethylene glycol as co-solvents for natural dyes to improve the solubility of dyes, prevent dye aggregation, improve permeability and uniformity of coloring; use citric acid as an acid agent, which is beneficial to protein fibers , especially the swelling of wool fabrics, can also promote the penetration of dyes into fibers and increase the color yield; adding natural tannic acid components to the color paste can improve the color fastness of natural dye printed fabrics.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with specific embodiments.

The invention provides a method for ecological printing of protein fiber fabrics with natural dyes, comprising:

Step 1: pretreatment of protein fiber fabric;

In one embodiment, this step can be specifically performed as follows: the protein fiber fabric is added to a mixture containing 0.2-1.5 g/L alum, 0.2-1.0 g/L nonionic surfactant AEO9, 0.5-2.0 g/L pyrrolidone carboxylic acid In the sodium pretreatment bath, adjust the pH to 5, control the bath ratio to 1:50, and raise the temperature to 60°C for 45 minutes of pretreatment. After the end, take out the protein fiber fabric, dehydrate it, and dry it at 80-100°C to obtain the pretreatment Protein fiber fabric, wherein, the protein fiber fabric is any one of silk fabric, wool fabric, blended fabric containing silk or wool.

Step 2: Add natural dye to tetraethylene glycol and non-ionic surfactant AEO3, mix well, then dissolve with a small amount of deionized water to make a natural dye solution; dissolve citric acid and tannic acid with a small amount of water respectively, Prepare citric acid solution and tannic acid solution; add the original printing paste into an enamel beaker, add the natural dye solution and the citric acid solution respectively under stirring, finally add the tannic acid solution, stir evenly, and prepare get printing paste;

In one embodiment, this step can be specifically performed as follows: natural dyes are added to tetraethylene glycol and nonionic surfactant AEO3, and mixed evenly, and the natural dyes are lac pigment, cochineal red pigment, chestnut shell pigment, sorghum Any one or more of red pigment, red rice red pigment, curcumin, safflower yellow pigment, gardenia yellow pigment. Then dissolve with a small amount of deionized water to make a natural dye solution; dissolve citric acid and tannic acid with a small amount of water respectively to make a citric acid solution and a tannic acid solution, wherein the tannic acid is obtained from Galla gall obtained by extraction. Add the original printing paste into an enamel beaker, add the natural dye solution and the citric acid solution respectively under stirring, finally add the tannic acid solution, and stir evenly to obtain a printing paste. The original printing paste is Any one of synthetic dragon gum paste, guar gum paste or a mixed paste of the two, the solid content of the original printing paste is 5-10%wt. Wherein, by weight percentage, the composition of the printing paste is: 50-80% of printing paste, 18-40% of water, 0.5-5.0% of natural dye, 0.2-1.0% of non-ionic surfactant AEO, four sweeteners Alcohol 0.5-2.0%, citric acid 0.2-1.0%, tannic acid 0.5-3.0%, the sum of the above components is 100%.

Step 3: using the printing color paste to print, dry, steam, wash and dry the pretreated protein fiber fabric according to the conventional printing process.

In order to make the above objects, features and advantages of the present invention more obvious and comprehensible, the technical solution of the present invention will be further described below in conjunction with the examples. But the present invention is not limited to the listed embodiments, but also includes any other known changes within the claimed scope of the present invention.

First of all, "one embodiment" or "embodiment" referred to herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. "In one embodiment" appearing in different places in this specification does not all refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

Embodiment one

Printing method of silk fabric

(1) Add the silk power textile to the pretreatment bath containing 0.8g/L alum, 0.5g/L nonionic surfactant AEO9, 1.0g/L sodium pyrrolidone carboxylate, adjust pH=5, control the bath ratio The ratio is 1:50, and the temperature is raised to 60°C for 45 minutes of pretreatment. After the end, the silk electric textile fabric is taken out, dehydrated, and dried at 80-100°C to obtain a pretreated silk electric textile fabric.

(2) Add the natural dye chestnut shell pigment into tetraethylene glycol and nonionic surfactant AEO3, mix well, then dissolve with a small amount of deionized water to make a natural dye solution; use a small amount of citric acid and tannic acid respectively Dissolve in water to make citric acid solution and tannic acid solution; add the 8% guar collagen paste with solid content into the enamel beaker, add the natural dye solution and the citric acid solution respectively under stirring, and finally add the Said tannic acid solution was stirred evenly to obtain chestnut shell pigment printing paste.

By weight percentage, the composition of the printing paste is as follows: solid content 8% guar collagen paste 75%, water 19.8%, natural dye chestnut shell pigment 2.0%, nonionic surfactant AEO 30.5%, four Gan Alcohol 1.0%, citric acid 0.5%, tannic acid 1.2%.

(3) Printing, drying, steaming, water washing and drying of the pretreated silk power textile on a magnetic bar printing machine by using the printing color paste according to a conventional printing process.

Embodiment two

Printing method of wool fabric

(1) Add all-wool serge fabric to the pretreatment bath containing 1.0g/L alum, 0.5g/L nonionic surfactant AEO9, 1.2g/L sodium pyrrolidone carboxylate, adjust pH=5, control bath ratio The ratio is 1:50, and the temperature is raised to 60°C for 45 minutes of pretreatment. After the end, the all-wool serge fabric is taken out, dehydrated, and dried at 80-100°C to obtain a pretreated all-wool serge fabric.

(2) Add natural dye lac red pigment into tetraethylene glycol and nonionic surfactant AEO3, mix well, then dissolve with a small amount of deionized water to make a natural dye solution; use a small amount of citric acid and tannic acid respectively dissolved in water to make the citric acid solution and the tannic acid solution; add the 8% guar collagen paste with a solid content to the enamel beaker, add the natural dye solution and the citric acid solution respectively under stirring, and finally add the tannin acid solution, and stirred evenly to prepare lac red printing paste.

Percentage by weight, the composition of the printing paste is as follows: solid content 8% guar collagen paste 72%, water 20.7%, natural dye lac red pigment 3.0%, nonionic surfactant AEO30.5%, four Glycol 1.2%, citric acid 0.6%, tannic acid 2.0%.

(3) The pretreated wool serge fabric is printed, dried, steamed, washed, and dried on a magnetic bar printing machine by using the printing color paste according to a conventional printing process.

See Table 1 for the color and fastness index of the printed fabric prepared by the protein fiber fabric natural dye ecological printing method described in the above two examples.

Table 1

In summary, the present invention discloses a method for ecological printing of protein fiber fabrics with natural dyes, which does not use urea as an additive for ecological printing of natural dyes. While ensuring excellent printing effects, the impact on the environment is reduced, and the overall printing and dyeing process is improved. Ecology of processing.

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation, although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (5)

1. a kind of protein fibre fabric natural dye ecology printing method, it is characterised in that this method comprises the following steps：

(1) pretreatment of protein fibre fabric：By protein fibre fabric be added to containing 0.2~1.5g/L alum, 0.2~ 1.0g/L nonionic surfactants AEO9,0.5~2.0g/L pyrrolidone sodium carboxylates pretreatment baths in, regulation pH=5, control Bath raio processed is 1:50,60 DEG C of pretreatment 45min are warming up to, after terminating, take out protein fibre fabric, dehydration, 80~100 DEG C of bars Dried under part, obtain pre-processing protein fibre fabric；

(2) natural dye is added in tetraethylene glycol and nonionic surfactant AEO3, is well mixed, then with it is a small amount of go from Sub- water dissolving, is made natural dye solution；Citric acid, tannic acid are dissolved with a small amount of water respectively, be made citric acid solution and Tannic acid solution；The former paste of stamp is added in enamel beaker, is separately added with agitation the natural dye solution and the lemon Lemon acid solution, the tannic acid solution is eventually adding, is stirred, print paste is made,

Wherein, by weight percentage, the composition of the print paste is：The former paste 50~80% of stamp, water 18~40%, natural dye Material 0.5~5.0%, nonionic surfactant AEO3 0.2~1.0%, tetraethylene glycol 0.5~2.0%, citric acid 0.2~ 1.0%, tannic acid 0.5~3.0%, the summation of said components is 100%；

(3) using the print paste to it is described pretreatment protein fibre fabric according to routine printing technology carry out stamp, Drying, decatize, washing, drying processing.

2. protein fibre fabric natural dye ecology printing method according to claim 1, it is characterised in that：Step (1) protein fibre fabric described in is any one in silk fabric, wool fabric, the blend fabric containing silk or wool Kind.

3. protein fibre fabric natural dye ecology printing method according to claim 1, it is characterised in that：Step (2) natural dye described in is lac pigment, Cochineal color, Chestnut shell pigment, red sorghum pigment, haematochrome of red rice, ginger Any one or more in uranidin, carthamin yellow, Gardenia Yellow.

4. protein fibre fabric natural dye ecology printing method according to claim 1, it is characterised in that：Step (2) tannic acid described in obtains to be extracted from Chinese gall.

5. protein fibre fabric natural dye ecology printing method according to claim 1, it is characterised in that：Step (2) the former paste of stamp described in is pasted for the mixing of any one in synthetic gum tragacanth paste, cluster bean adhesive paste or both, the stamp The solid content of original paste is 5~10%wt.