CN109577027B - Method for dyeing wool fabric by black dye from plant sources - Google Patents
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- CN109577027B CN109577027B CN201811318277.3A CN201811318277A CN109577027B CN 109577027 B CN109577027 B CN 109577027B CN 201811318277 A CN201811318277 A CN 201811318277A CN 109577027 B CN109577027 B CN 109577027B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/34—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using natural dyestuffs
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/02—Material containing basic nitrogen
- D06P3/04—Material containing basic nitrogen containing amide groups
- D06P3/14—Wool
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Abstract
The invention belongs to the field of natural dye dyeing, and particularly relates to a method for dyeing wool fabric by using black dye derived from plants, which mainly comprises the following steps: (1) cutting wool fabric into 11 × 5cm rectangles, putting into distilled water at 40 deg.C for wetting and soaking, taking out after 20min, and wringing out. (2) And (3) uniformly mixing the black bean skin pigment and distilled water to prepare the dye liquor. (3) The concentration owf of the dye (mass ratio of the dye to the fabric) is 25-30%, the dyeing temperature is 90-95 ℃, the dyeing pH is 2.09-5.63, the bath ratio is 1:50, the dyeing time is 80-120min, and the wool fabric is taken out and washed by water to obtain the primarily dyed wool fabric. (4) And (4) soaping the preliminarily dyed wool fabric obtained in the step (3), taking out and airing to obtain the dyed wool fabric. The dyed wool fabric prepared by the method has high color fastness and certain antibacterial property and ultraviolet resistance.
Description
The original invention patent applied by this divisional patent is filed 2016, 10, 9, with the application numbers: 201610879586.2 entitled "a method for dyeing wool fabrics with natural dyes from black bean skin".
Technical Field
The invention relates to a dyeing method of a vegetable dye, in particular to a method for dyeing wool fabrics by using a black dye derived from a vegetable, and belongs to the field of natural dye dyeing.
Background
With the increasing development of synthetic dyes, the textile industry overuses synthetic dyes, which are statistically valued at about $ 230 million by about 130 million tons per year in the last years, of dyes, pigments and dye precursors, most of which are synthetic dyes, the production, processing and discharge of waste dyeing liquors are a considerable environmental hazard, and some of the azo synthetic dyes are found to be bio-toxic and carcinogenic and teratogenic.
The natural dye is derived from natural resources, shows good environmental compatibility and biodegradability, meets the requirement of green chemistry, and increasingly becomes the research focus of novel dye development. Chinese patent CN102061633 discloses a method for dyeing protein fibers and fabrics thereof by natural fuel extracted from grape seeds, and the method adopts grape seed pigment solution to dye protein fiber fabrics such as wool, silk and the like by a direct dyeing method or an aluminum ion and iron ion pre-mordanting method. Chinese patent CN102041689A discloses an application of natural impatiens balsamina dye in dyeing, which comprises pretreating raw materials, performing ultrasonic extraction on the raw materials, concentrating filtrate to obtain pasty crude impatiens balsamina natural dye, refining the natural dye, and dyeing real silk or cotton fabrics with the refined natural dye. Chinese patent CN103080413 discloses a method for natural dyeing of fiber using indigo plant, which is an invention in which liquid pigment in leaves of indigo plant is dissolved into water to mix the water containing liquid pigment with lime powder and air, thereby concentrating the mixture into insoluble pigment; the concentrated indigo plant dye is mixed with caustic soda to decompose the mixture into soluble pigments by microbial fermentation, and then the fiber is immersed in the soluble indigo plant dye solution to dye the fiber. These natural dyes are not suitable for industrial production and application due to their low color fastness, especially light fastness.
The black bean is nutritious, contains various nutrients such as protein, fat, vitamins, trace elements, etc., and also has various bioactive substances such as black bean pigment, black bean polysaccharide, isoflavone, etc. The testa Sojae Atricolor pigment extracted from testa Sojae Atricolor is mainly anthocyanin pigment, is glycoside based on flavone nucleus and capable of presenting color, and is glycoside formed by combining anthocyanidin (ligand) and sugar. The main components are delphinidin-3-glucoside and cyanidin-3-glucoside. Has antioxidant, anticancer, cardiovascular lowering, vision improving, skin caring, weight reducing, and memory improving effects. At present, the black soybean hull pigment is mainly applied to food additives and functional foods, and the research of applying the black soybean hull pigment to the textile industry is not found.
Disclosure of Invention
The invention provides a method for dyeing wool fabric by using natural dye extracted from black bean skin, which is nontoxic, low in cost, environment-friendly, high in color fastness, antibacterial and uvioresistant, and aims to overcome the defects of the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
(1) preparation work: cutting wool fabric into 11 × 5cm rectangles, putting the rectangles into distilled water at 40 ℃ for wetting and soaking, taking out the rectangles after 20min, wringing the rectangles, and removing air among wool fibers.
(2) Preparing a dye solution: and (3) uniformly mixing the black bean skin pigment and distilled water to prepare the dye liquor.
(3) The dyeing process comprises the following steps: the dye concentration owf (mass ratio of dye to fabric) is 25-30%, the dyeing temperature is 90-95 ℃, the dyeing pH is 2.09-5.63, the bath ratio is 1:50, the dyeing time is 80-120min, and the wool fabric is taken out and washed by water to obtain the primarily dyed wool fabric.
(4) The soaping process comprises the following steps: and (4) soaping the preliminarily dyed wool fabric obtained in the step (3), wherein the soaping temperature is 90 ℃, the soaping time is 10min, and the wool fabric is taken out and dried to obtain the dyed wool fabric.
Further, the oblong wool fabric in the step (1) weighs about 1 g.
Further, the mass concentration of the black bean peel pigment in the step (2) is 5-6 g/L.
Further, the bath ratio in the step (3) refers to the mass ratio of the wool fabric to the dye liquor.
Further, the dyeing pH in the step (3) is adjusted by 1mol/L of acetic acid and sodium acetate.
Further, the number of washing times in the step (3) is 3.
Further, the soap washing solution in the step (4) is composed of neutral soap flakes and a solution formed by dissolving sodium carbonate in distilled water.
Further, the mass concentration of the neutral soap flakes in the step (4) is 2g/L, and the mass concentration of the sodium carbonate is 2 g/L.
Further, the preliminarily dyed wool fabric in the step (4): the mass ratio of the soap lotion is 1: 30.
Advantageous effects
The invention provides a method for dyeing wool fabric by using black dye derived from plants. The natural dye adopted by the method is derived from plants, has low cost and no toxicity to human bodies, is a biocompatible and environment-friendly dye, is applied to dyeing of wool fabrics, is clean in the whole dyeing process, has high color fastness, certain antibacterial property and ultraviolet resistance, and the dyed fabrics show natural colors, and the dyed wool fabrics are green textiles with high added value.
The black soybean hull pigment extracted from black soybean hull is a pure natural pigment, mainly belongs to anthocyanin pigments, is dark brown, is glucoside capable of presenting color based on flavone nucleus, and is a glycoside formed by combining anthocyanidin (ligand) and sugar. The main components are delphinidin-3-glucoside and cyanidin-3-glucoside. Has antioxidant, anticancer, cardiovascular lowering, vision improving, skin caring, weight reducing, and memory improving effects.
The natural dye prepared from the black bean skin pigment is used for dyeing wool fabrics, salt is not required to be added for dyeing promotion, the rubbing color fastness, the washing color fastness and the perspiration color fastness of the wool fabrics dyed by the natural dye can reach 4-5, and the light fastness can reach 3. Meanwhile, the natural dye contains flavonoid active substances, so that the wool fabric has certain antibacterial property and ultraviolet resistance, and the UPF value of the dyed wool fabric is increased by 32.47-34 compared with that of the undyed wool fabric.48% of its TUVAThe value is reduced by 77.01%, TUVBThe value is reduced by 93.31-93.65%. The dye-treated wool fabric has an integer value of 1.88-2.73, and has good coloring and natural color. The dyed wool fabric has long-term contact with human body, and also has effects of resisting oxidation, resisting cancer, lowering cardiovascular disease, improving vision, promoting health, caring skin, reducing weight, and improving memory.
The dyeing mechanism is as follows: the molecular structure of the natural dye contains a certain amount of phenolic hydroxyl, and the phenolic hydroxyl is combined with an amino dye base on wool fibers to dye the fibers.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Unless otherwise specified, technical means not described in the embodiments may be implemented in a manner well known to those skilled in the art. Further, the embodiments are to be construed as illustrative and not restrictive, and various changes, substitutions and alterations in the materials and components set forth in the embodiments may be made by those skilled in the art without departing from the spirit and scope of the present invention, and such equivalents are intended to be within the scope of the appended claims. In particular, the specific parameters defined in the present invention should have allowable error ranges.
The integral value referred in the embodiment is the sum of pseudo tristimulus values of colored objects obtained in a visible light range (400-700 nm), reflects the absorption and scattering conditions of light in the whole visible light range, has good consistency with the evaluation of human eyes on color depth, and therefore, the color depth is expressed by the integral value. The present invention measures the Integ value by a Datacolor SF-600 color measuring and matching instrument (Datacolor Co., USA).
The black bean skin pigment used in the invention is commercially available and is brown powder, and is specifically purchased from but not limited to Shaanxi Furan natural products Co.
Example 1:
(1) preparation work: mixing wool fabric (gram weight 265 g/m)2Door width 150cm) cutting into 11 × 5cm rectangle, wetting and soaking in 40 deg.C distilled water for 20min, taking out, and wringing.
(2) Preparing a dye solution: and (3) uniformly mixing the black bean skin pigment and distilled water to prepare the dye liquor.
(3) The dyeing process comprises the following steps: the dye concentration owf (mass ratio of dye to fabric) is 25%, the dyeing temperature is 95 ℃, the dyeing pH is 2.09, the bath ratio is 1:50, the dyeing time is 80min, and the wool fabric is taken out and washed by water to obtain the preliminarily dyed wool fabric.
(4) The soaping process comprises the following steps: and (4) soaping the preliminarily dyed wool fabric obtained in the step (3), wherein the soaping temperature is 90 ℃, the soaping time is 10min, and the wool fabric is taken out and dried to obtain the dyed wool fabric.
Further, the oblong wool fabric in the step (1) weighs about 1 g.
Further, the mass concentration of the black soybean peel pigment in the step (2) is 5 g/L.
Further, the bath ratio in the step (3) refers to the mass ratio of the wool fabric to the dye liquor.
Further, the dyeing pH in the step (3) is adjusted by 1mol/L of acetic acid and sodium acetate.
Further, the number of washing times in the step (3) is 3.
Further, the soap washing solution in the step (4) is composed of neutral soap flakes and a solution formed by dissolving sodium carbonate in distilled water.
Further, the mass concentration of the neutral soap flakes in the step (4) is 2g/L, and the mass concentration of the sodium carbonate is 2 g/L.
Further, the preliminarily dyed wool fabric in the step (4): the mass ratio of the soap lotion is 1: 30.
The Integ value of the dyed wool fabric is measured to reach 2.72, which shows that the dyed wool fabric is better colored.
The dyed wool fabric is subjected to color fastness test, and the results are shown in tables 1 and 2, wherein the rubbing color fastness, the washing color fastness and the perspiration color fastness reach 4-5 grades, and the light fastness reaches 3 grades, which indicates that the dyed wool fabric has high color fastness.
The dyed wool fabric was subjected to the ultraviolet ray resistance test, and the results are shown in Table 3, in which the UPF value was increased by 34.48% and T was increased as compared with the undyed wool fabricUVAThe value is reduced by 77.01%, TUVBThe value is reduced by 93.31 percent, which shows that the ultraviolet resistance effect of the dyed wool fabric is obvious.
Example 2:
(1) preparation work: mixing wool fabric (gram weight 265 g/m)2150cm in width), soaking in 40 deg.C distilled water for 20min, taking out, and wringing.
(2) Preparing a dye solution: and (3) uniformly mixing the black bean skin pigment and distilled water to prepare the dye liquor.
(3) The dyeing process comprises the following steps: the dye concentration owf (mass ratio of dye to fabric) is 30%, the dyeing temperature is 90 ℃, the dyeing pH is 3, the bath ratio is 1:50, the dyeing time is 100min, and the wool fabric is taken out and washed by water to obtain the preliminarily dyed wool fabric.
(4) The soaping process comprises the following steps: and (4) soaping the preliminarily dyed wool fabric obtained in the step (3), wherein the soaping temperature is 90 ℃, the soaping time is 10min, and the wool fabric is taken out and dried to obtain the dyed wool fabric.
Further, the oblong wool fabric in the step (1) weighs about 1 g.
Further, the mass concentration of the black soybean peel pigment in the step (2) is 6 g/L.
Further, the bath ratio in the step (3) refers to the mass ratio of the wool fabric to the dye liquor.
Further, the dyeing pH in the step (3) is adjusted by 1mol/L of acetic acid and sodium acetate.
Further, the number of washing times in the step (3) is 3.
Further, the soap washing solution in the step (4) is composed of neutral soap flakes and a solution formed by dissolving sodium carbonate in distilled water.
Further, the mass concentration of the neutral soap flakes in the step (4) is 2g/L, and the mass concentration of the sodium carbonate is 2 g/L.
Further, the preliminarily dyed wool fabric in the step (4): the mass ratio of the soap lotion is 1: 30.
The Integ value of the dyed wool fabric is measured to reach 2.5, which shows that the dyed wool fabric is better colored.
The dyed wool fabric is subjected to color fastness test, and the results are shown in tables 1 and 2, wherein the rubbing color fastness, the washing color fastness and the perspiration color fastness reach 4-5 grades, and the light fastness reaches 3 grades, which indicates that the dyed wool fabric has high color fastness.
Example 3:
(1) preparation work: mixing wool fabric (gram weight 265 g/m)2150cm in width), soaking in 40 deg.C distilled water for 20min, taking out, and wringing.
(2) Preparing a dye solution: and (3) uniformly mixing the black bean skin pigment and distilled water to prepare the dye liquor.
(3) The dyeing process comprises the following steps: the dye concentration owf (mass ratio of dye to fabric) is 30%, the dyeing temperature is 90 ℃, the dyeing pH is 3, the bath ratio is 1:50, the dyeing time is 110min, and the wool fabric is taken out and washed by water to obtain the preliminarily dyed wool fabric.
(4) The soaping process comprises the following steps: and (4) soaping the preliminarily dyed wool fabric obtained in the step (3), wherein the soaping temperature is 90 ℃, the soaping time is 10min, and the wool fabric is taken out and dried to obtain the dyed wool fabric.
Further, the oblong wool fabric in the step (1) weighs about 1 g.
Further, the mass concentration of the black soybean peel pigment in the step (2) is 6 g/L.
Further, the bath ratio in the step (3) refers to the mass ratio of the wool fabric to the dye liquor.
Further, the dyeing pH in the step (3) is adjusted by 1mol/L of acetic acid and sodium acetate.
Further, the number of washing times in the step (3) is 3.
Further, the soap washing solution in the step (4) is composed of neutral soap flakes and a solution formed by dissolving sodium carbonate in distilled water.
Further, the mass concentration of the neutral soap flakes in the step (4) is 2g/L, and the mass concentration of the sodium carbonate is 2 g/L.
Further, the preliminarily dyed wool fabric in the step (4): the mass ratio of the soap lotion is 1: 30.
The Integ value of the dyed wool fabric is measured to reach 2.73, which shows that the dyed wool fabric is better colored.
The dyed wool fabric is subjected to color fastness test, and the results are shown in tables 1 and 2, wherein the rubbing color fastness, the washing color fastness and the perspiration color fastness reach 4-5 grades, and the light fastness reaches 3 grades, which indicates that the dyed wool fabric has high color fastness.
Example 4:
(1) preparation work: mixing wool fabric (gram weight 265 g/m)2150cm in width), soaking in 40 deg.C distilled water for 20min, taking out, and wringing.
(2) Preparing a dye solution: and (3) uniformly mixing the black bean skin pigment and distilled water to prepare the dye liquor.
(3) The dyeing process comprises the following steps: the dye concentration owf (mass ratio of dye to fabric) is 30%, the dyeing temperature is 90 ℃, the dyeing pH is 3, the bath ratio is 1:50, the dyeing time is 120min, and the wool fabric is taken out and washed by water to obtain the preliminarily dyed wool fabric.
(4) The soaping process comprises the following steps: and (4) soaping the preliminarily dyed wool fabric obtained in the step (3), wherein the soaping temperature is 90 ℃, the soaping time is 10min, and the wool fabric is taken out and dried to obtain the dyed wool fabric.
Further, the oblong wool fabric in the step (1) weighs about 1 g.
Further, the mass concentration of the black soybean peel pigment in the step (2) is 6 g/L.
Further, the bath ratio in the step (3) refers to the mass ratio of the wool fabric to the dye liquor.
Further, the dyeing pH in the step (3) is adjusted by 1mol/L of acetic acid and sodium acetate.
Further, the number of washing times in the step (3) is 3.
Further, the soap washing solution in the step (4) is composed of neutral soap flakes and a solution formed by dissolving sodium carbonate in distilled water.
Further, the mass concentration of the neutral soap flakes in the step (4) is 2g/L, and the mass concentration of the sodium carbonate is 2 g/L.
Further, the preliminarily dyed wool fabric in the step (4): the mass ratio of the soap lotion is 1: 30.
The Integ value of the dyed wool fabric is measured to reach 2.66, which shows that the dyed wool fabric is better colored.
The dyed wool fabric is subjected to color fastness test, and the results are shown in tables 1 and 2, wherein the rubbing color fastness, the washing color fastness and the perspiration color fastness reach 4-5 grades, and the light fastness reaches 3 grades, which indicates that the dyed wool fabric has high color fastness.
Example 5:
(1) preparation work: mixing wool fabric (gram weight 265 g/m)2150cm in width), soaking in 40 deg.C distilled water for 20min, taking out, and wringing.
(2) Preparing a dye solution: and (3) uniformly mixing the black bean skin pigment and distilled water to prepare the dye liquor.
(3) The dyeing process comprises the following steps: the dye concentration owf (mass ratio of dye to fabric) is 25%, the dyeing temperature is 95 ℃, the dyeing pH is 5.04, the bath ratio is 1:50, the dyeing time is 100min, and the wool fabric is taken out and washed by water to obtain the preliminarily dyed wool fabric.
(4) The soaping process comprises the following steps: and (4) soaping the preliminarily dyed wool fabric obtained in the step (3), wherein the soaping temperature is 90 ℃, the soaping time is 10min, and the wool fabric is taken out and dried to obtain the dyed wool fabric.
Further, the oblong wool fabric in the step (1) weighs about 1 g.
Further, the mass concentration of the black soybean peel pigment in the step (2) is 5 g/L.
Further, the bath ratio in the step (3) refers to the mass ratio of the wool fabric to the dye liquor.
Further, the dyeing pH in the step (3) is adjusted by 1mol/L of acetic acid and sodium acetate.
Further, the number of washing times in the step (3) is 3.
Further, the soap washing solution in the step (4) is composed of neutral soap flakes and a solution formed by dissolving sodium carbonate in distilled water.
Further, the mass concentration of the neutral soap flakes in the step (4) is 2g/L, and the mass concentration of the sodium carbonate is 2 g/L.
Further, the preliminarily dyed wool fabric in the step (4): the mass ratio of the soap lotion is 1: 30.
The Integ value of the dyed wool fabric is measured to reach 1.79, which shows that the dyed wool fabric is better colored.
The dyed wool fabric is subjected to color fastness test, and the results are shown in tables 1 and 2, wherein the rubbing color fastness, the washing color fastness and the perspiration color fastness reach 4-5 grades, and the light fastness reaches 3 grades, which indicates that the dyed wool fabric has high color fastness.
The dyed wool fabric was subjected to the ultraviolet ray resistance test, and the results are shown in Table 3, in which the UPF value was increased by 32.47% and T was increased as compared with the undyed wool fabricUVAThe value is reduced by 77.01%, TUVBThe value is reduced by 93.65 percent, which shows that the ultraviolet resistance effect of the dyed wool fabric is obvious.
Example 6:
(1) preparation work: mixing wool fabric (gram weight 265 g/m)2150cm in width), soaking in 40 deg.C distilled water for 20min, taking out, and wringing.
(2) Preparing a dye solution: and (3) uniformly mixing the black bean skin pigment and distilled water to prepare the dye liquor.
(3) The dyeing process comprises the following steps: the dye concentration owf (mass ratio of dye to fabric) is 25%, the dyeing temperature is 95 ℃, the dyeing pH is 5.63, the bath ratio is 1:50, the dyeing time is 100min, and the wool fabric is taken out and washed by water to obtain the preliminarily dyed wool fabric.
(4) The soaping process comprises the following steps: and (4) soaping the preliminarily dyed wool fabric obtained in the step (3), wherein the soaping temperature is 90 ℃, the soaping time is 10min, and the wool fabric is taken out and dried to obtain the dyed wool fabric.
Further, the oblong wool fabric in the step (1) weighs about 1 g.
Further, the mass concentration of the black soybean peel pigment in the step (2) is 5 g/L.
Further, the bath ratio in the step (3) refers to the mass ratio of the wool fabric to the dye liquor.
Further, the dyeing pH in the step (3) is adjusted by 1mol/L of acetic acid and sodium acetate.
Further, the number of washing times in the step (3) is 3.
Further, the soap washing solution in the step (4) is composed of neutral soap flakes and a solution formed by dissolving sodium carbonate in distilled water.
Further, the mass concentration of the neutral soap flakes in the step (4) is 2g/L, and the mass concentration of the sodium carbonate is 2 g/L.
Further, the preliminarily dyed wool fabric in the step (4): the mass ratio of the soap lotion is 1: 30.
The Integ value of the dyed wool fabric is measured to reach 1.88, which shows that the dyed wool fabric is better colored.
The dyed wool fabric is subjected to color fastness test, and the results are shown in tables 1 and 2, wherein the rubbing color fastness, the washing color fastness and the perspiration color fastness reach 4-5 grades, and the light fastness reaches 3 grades, which indicates that the dyed wool fabric has high color fastness.
The dyed wool fabric was subjected to the ultraviolet ray resistance test, and the results are shown in Table 3, in which the UPF value was increased by 30.43% and T was increased as compared with the undyed wool fabricUVADecrease of 77.01%, TUVBThe value is reduced by 93.31 percent, which shows that the ultraviolet resistance effect of the dyed wool fabric is obvious.
TABLE 1 color fastness test of dyed wool fabrics
TABLE 2 color fastness test of dyed wool fabrics
TABLE 3 determination of the UV resistance of undyed wool fabrics and of dyed wool fabrics
| UPF | TUVA/％ | TUVB/％ | |
| Undyed wool fabric | 369.12 | 0.87 | 2.99 |
| Example 1 | 496.41 | 0.20 | 0.20 |
| Example 5 | 488.98 | 0.20 | 0.19 |
| Example 6 | 481.44 | 0.20 | 0.20 |
The test methods in the above examples are based on the following criteria:
the color fastness to rubbing is determined according to GB/T3920-2008 'color fastness to rubbing test for textiles'; the color fastness to washing is determined according to GB/T3921-2008 soaping color fastness resistance of textile color fastness test; the color fastness to perspiration stain is determined according to GB/T3922-1995 color fastness to perspiration stain test; the pH value of the water extraction liquid is measured according to GB/T7573-2009 color fastness of the extraction liquid in the color fastness test of textiles; the color fastness to sunlight is determined according to GB/T8427-1998 xenon arc lamp for the fastness to artificial light of textiles; the ultraviolet resistance is determined according to GB/T18830-2009 evaluation on ultraviolet resistance of textiles.
Claims (6)
1. A method for dyeing wool fabric by black dye of plant origin is characterized by comprising the following steps:
(1) preparation work: cutting wool fabric into 11 × 5cm rectangles, putting the rectangles into distilled water at 40 ℃ for wetting and soaking, taking out the rectangles after 20min, and wringing the rectangles;
(2) preparing a dye solution: uniformly mixing the black bean skin pigment with distilled water to prepare dye liquor with the mass concentration of 5-6 g/L;
(3) the dyeing process comprises the following steps: the dye concentration owf is 25-30%, the dyeing temperature is 90-95 ℃, acetic acid and sodium acetate with the concentration of 1mol/L are used for adjusting the dyeing pH to be 2.09-5.63, the bath ratio is 1:50, the dyeing time is 80-120min, and the wool fabric is taken out and washed by water to obtain preliminarily dyed wool fabric;
(4) the soaping process comprises the following steps: putting the preliminarily dyed wool fabric obtained in the step (3) into soaping liquor for soaping treatment, taking out and drying to obtain a dyed wool fabric; preliminarily dyed wool fabric: the mass ratio of the soap lotion is 1: 30.
2. The method for dyeing wool fabric with black plant-derived dye according to claim 1, wherein the weight of the oblong wool fabric in the step (1) is 1 g.
3. The method for dyeing wool fabrics with black plant-derived dyes according to claim 1 wherein the number of water washes in step (3) is 3.
4. The method for dyeing wool fabrics with black plant-derived dyes according to claim 1, wherein the soaping temperature in step (4) is 90 ℃ and the soaping time is 10 min.
5. The method for dyeing wool fabrics with black plant-derived dyes according to claim 1, wherein the soaping liquid in step (4) is composed of neutral soap flakes and a solution of sodium carbonate dissolved in distilled water.
6. The method for dyeing wool fabrics with black plant-derived dye according to claim 5, wherein the mass concentration of the neutral soap flakes in the step (4) is 2g/L and the mass concentration of the sodium carbonate is 2 g/L.
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| CN201610879586.2A CN106638027B (en) | 2016-10-09 | 2016-10-09 | A method of being derived from the natural dye dyeing wool fabric of Testa sojae atricolor |
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| CN109577027A (en) | 2019-04-05 |
| CN106638027B (en) | 2019-02-15 |
| CN106638027A (en) | 2017-05-10 |
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