CN112962334A - Natural dyeing auxiliary for dyeing sorghum husk pigment plants and dyeing method - Google Patents
Natural dyeing auxiliary for dyeing sorghum husk pigment plants and dyeing method Download PDFInfo
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- CN112962334A CN112962334A CN201911284650.2A CN201911284650A CN112962334A CN 112962334 A CN112962334 A CN 112962334A CN 201911284650 A CN201911284650 A CN 201911284650A CN 112962334 A CN112962334 A CN 112962334A
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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
- D06P1/44—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 insoluble pigments or auxiliary substances, e.g. binders
- D06P1/64—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 insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
- D06P1/642—Compounds containing nitrogen
- D06P1/647—Nitrogen-containing carboxylic acids or their salts
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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
- 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
- D06P1/44—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 insoluble pigments or auxiliary substances, e.g. binders
- D06P1/445—Use of auxiliary substances before, during or after dyeing or printing
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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
- D06P1/44—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 insoluble pigments or auxiliary substances, e.g. binders
- D06P1/653—Nitrogen-free carboxylic acids or their salts
- D06P1/6533—Aliphatic, araliphatic or cycloaliphatic
-
- 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
A natural dyeing auxiliary for dyeing sorghum husk pigment plants is composed of the following raw materials in parts by weight: 0.5-5 parts of B vitamins, 10-50 parts of light rare earth aqueous solution, 1-3 parts of tartaric acid, 5-1 part of sodium polyaspartate, 60-5 parts of camellia leaf fermentation solution, 1-0.5 part of Turkey red oil and 22.5-35.5 parts of purified water. A dyeing method of natural dyeing auxiliary agent for sorghum husk pigment plant dyeing adopts a composite dyeing mode of dyeing promotion in one bath with sorghum husk pigment plant dye and after-bath mordant dyeing. Compared with the prior art, the invention has the beneficial effects that after the fabric is dyed by the sorghum red pigment, the dyeing efficiency is improved, the soaping fastness can reach more than 3.5 grade, the dry and wet rubbing fastness can reach more than 3 grade, and the light-resistant color fastness can reach more than 4 grade, so that the sorghum husk pigment plant dyeing has the actual requirement of industrial mass production.
Description
Technical Field
The invention relates to the field of research and development and application of natural dyeing auxiliaries, in particular to a natural dyeing auxiliary used in a plant dyeing process of wool fibers, yarns, fabrics and ready-made clothes by sorghum husk pigment and a dyeing method thereof.
Background
With the research and development and the promotion of plant dye dyeing technology, more and more plant pigments are applied to the textile printing and dyeing industry as plant dyes. The sorghum husk pigment is extracted from sorghum husk, and is a byproduct of grain, wine, feed processing and other industries due to wide source of sorghum husk, so the sorghum husk pigment is low in price, high in pigment content and simple in extraction method, and is listed as a plant dye.
However, sorghum husk pigment has low color yield when directly used in the printing and dyeing industry and can not reach the color fastness of petrochemical dyes, so that the sorghum husk pigment cannot be applied to industrial production. The natural dyeing auxiliary agent and the dyeing method for dyeing sorghum husk pigment plants are used for solving the problems of the dyeing rate and the dyeing fastness of sorghum husk pigment to fabrics, so that the sorghum husk pigment plant dyeing meets the actual needs of industrial mass production.
Disclosure of Invention
The invention aims to provide a natural dyeing auxiliary agent for dyeing sorghum husk pigment plants and a dyeing method. The hydrolysis degree of a plant dye-fiber bond is reduced by using vitamin B3, and a light rare earth lanthanum citrate or praseodymium citrate or neodymium chloride or praseodymium chloride solution is combined with metal ions in a camellia leaf fermentation solution, so that in a combined dyeing mode of one-bath dyeing promotion and after-bath mordant dyeing, the natural dyeing auxiliary agent for sorghum husk pigment plant dyeing and the dyed sorghum husk pigment are combined into a metal ion substance to form a lake to be fixed on fibers, thereby improving the dyeing rate and the color fastness of sorghum husk pigment fabric dyeing, and enabling the sorghum husk pigment plant dyeing to meet the actual needs of industrial mass production.
In order to achieve the purpose, the invention adopts the following technical scheme:
a natural dyeing auxiliary for dyeing sorghum husk pigment plants is composed of the following raw materials in parts by weight: 0.5-5 parts of B vitamins, 10-50 parts of light rare earth aqueous solution, 1-3 parts of tartaric acid, 5-1 part of sodium polyaspartate, 60-5 parts of camellia leaf fermentation solution, 1-0.5 part of Turkey red oil and 22.5-35.5 parts of purified water.
The vitamin B group is VB3
The light rare earth aqueous solution is lanthanum citrate or praseodymium citrate or neodymium chloride or praseodymium chloride, preferably lanthanum citrate, and the lanthanum citrate is dissolved into the light rare earth aqueous solution with the content of 10 percent by adding pure water.
The preparation method of the camellia leaf fermentation solution comprises the following steps: preferably selecting mature leaves or old leaves with high metal element content such as red peel brown fruits or red camellia, soaking the camellia leaves according to the weight component proportion of 1 part of leaves added with 3 parts of water, simultaneously adding 0.5% -1% tartaric acid according to the weight of the solution, and fermenting in a closed manner at the temperature of 30-35 ℃ for 1-7 days. When the temperature is higher than 35 ℃, adding purified water to reduce the temperature in due time, and keeping the temperature below 35 ℃. When the temperature of the fermentation solution is not increased any more, the fermented liquid is filtered by a stainless steel mesh of 200 meshes before the leaves are only softened, discolored and not rotten. And (3) carrying out filter pressing on the fermented leaves by a filter press to form cakes, filtering the filter-pressed fermented solution by a 200-mesh stainless steel net again, and combining the filtered fermented solution with the previous fermented solution.
A preparation method of a natural dyeing auxiliary agent for dyeing sorghum husk pigment plants comprises the following steps: adding 22.5-35.5 parts of purified water into a stainless steel reaction kettle, sequentially adding 0.5-5 parts of B vitamins and 10-50 parts of light rare earth aqueous solution, starting a stirrer, stirring for 20-30 minutes at a rotating speed of more than 200 revolutions per minute, and sequentially adding 1-3 parts of tartaric acid; 5-1 part of polyaspartic acid sodium; 60-5 parts of camellia leaf fermentation solution; 1-0.5 part of Turkey red oil, continuously stirring for 30-40 minutes, filtering and discharging.
A dyeing method of a natural dyeing auxiliary agent for sorghum husk pigment plant dyeing adopts a compound dyeing mode of dyeing promotion in one bath and after-bath mordant dyeing with sorghum husk pigment, and specifically comprises the following steps: the ratio of the dyed fabric to water is 1: 5-40, and the weight of sorghum husk pigment relative to water is 1-15 g/l. Adding sorghum husk pigment before heating to 75 ℃, then adding 1-10 g/l of natural dyeing auxiliary agent for dyeing sorghum husk pigment plants in one bath, dyeing for 30-90 minutes at 75-98 ℃, then adding 10-50 g/l of natural dyeing auxiliary agent for dyeing sorghum husk pigment plants after dyeing, and then continuing to keep the temperature for 20-40 minutes. And after dyeing is finished, cleaning for 1-2 times by using hot water with the temperature of over 75 ℃, and dehydrating and drying.
The research of the inventor discovers that the vitamin B VB3 is easy to combine with part of plant dye to improve the reaction activity of the plant dye and fiber, reduce the hydrolysis degree of a plant dye-fiber bond, improve the dyeing uniformity and the color fixing rate, and simultaneously, the catalytic dyeing process can shorten the dyeing and color fixing time.
The research of the inventor discovers that the color fixing rate of sorghum husk pigment and dyed fabric can be greatly improved by combining the light rare earth lanthanum citrate, praseodymium citrate, neodymium chloride and praseodymium chloride with metal ions in the camellia leaf fermentation solution. The natural dyeing auxiliary for dyeing the sorghum husk pigment plant is added during one-bath dyeing, so that the effects of dyeing promotion and level dyeing can be achieved, a certain dosage of the natural dyeing auxiliary for dyeing the sorghum husk pigment plant is added again after one-bath dyeing is finished, the natural dyeing auxiliary for dyeing the sorghum husk pigment plant and the dyed sorghum husk pigment are promoted to be combined into a metal ion substance, and color lake is formed and fixed on fibers, so that the dyeing rate and the color fastness of the sorghum husk pigment fabric are effectively improved.
Compared with the prior art, the invention has the beneficial effects that:
according to the natural dyeing auxiliary agent and the dyeing method for sorghum husk pigment plant dyeing, disclosed by the invention, after the fabric is dyed by the sorghum red pigment, the dyeing efficiency is improved, the soaping fastness can reach more than 3.5 grade, the dry and wet rubbing fastness can reach more than 3 grade, and the light fastness can reach more than 4 grade, so that the sorghum husk pigment plant dyeing has the actual needs of industrial mass production.
The invention is especially suitable for plant dyeing of wool fibers, yarns, fabrics and clothes such as wool, mercerized wool, shrink-proof wool and the like by sorghum husk pigment, and is also suitable for plant dyeing of other protein fibers, cellulose fibers and yarns, fabrics and clothes thereof.
Detailed Description
The present invention will be described in detail with reference to examples, but the scope of the present invention is not limited to the examples described below.
Example one
Lanthanum citrate is selected and dissolved into 10 percent light rare earth lanthanum citrate aqueous solution by adding purified water.
Preferably ripe leaves with high content of metal elements, such as red brown fruit or red camellia. Soaking camellia leaves according to the weight ratio of 1 part of leaves to 3 parts of water, simultaneously adding 0.5 percent tartaric acid according to the weight of the solution, fermenting for 3 days at 30 ℃ in a closed manner, controlling the fermentation temperature, replenishing purified water at proper time when the temperature is higher than 35 ℃ to cool, and keeping the temperature below 35 ℃. After a period of time, the fermentation solution is not heated any more, and the fermented liquid is filtered out by a 200-mesh stainless steel net before the leaves are only softened, discolored and not rotten. After fermentation, the leaves are pressed and filtered into cakes by a filter press, and the cake-shaped fermentation leaves can be used for subsequent composting. Filtering the fermentation solution after filter pressing again through a stainless steel mesh of 200 meshes, and combining the fermentation solution with the previous fermentation solution.
Adding 24.5 parts of purified water into a stainless steel reaction kettle, sequentially adding 2 parts of vitamin B3 and 20 parts of lanthanum citrate aqueous solution, starting a stirrer, stirring for 20 minutes at a rotating speed of more than 200 revolutions per minute, sequentially adding 2 parts of tartaric acid, 1 part of sodium polyaspartate, 50 parts of camellia leaf fermented solution and 0.5 part of Turkey red oil, continuously stirring for 30 minutes, and filtering and discharging.
The dyeing method comprises the following steps: the method adopts a compound dyeing mode of dyeing promotion in one bath with sorghum husk pigment and after-bath mordant dyeing, and specifically comprises the following steps: the ratio of wool fibers to be dyed to water is 1:12, and the weight of sorghum husk pigment relative to water is 10 g/l. Adding sorghum shell pigment before heating to 75 ℃, adding 2g/l of the natural dyeing auxiliary agent prepared by the method in one bath, dyeing for 60 minutes at 98 ℃, adding 35g/l of the natural dyeing auxiliary agent prepared by the method after dyeing, and continuously preserving heat for 25 minutes. And (3) after dyeing is finished, cleaning for 1-2 times by using hot water with the temperature of over 75 ℃, and dehydrating and drying.
After the dyeing processing, the soaping fastness of the plant dyed wool fiber reaches more than 3.5 grade, the dry and wet rubbing fastness is more than 3 grade, and the light fastness of the wool is more than 4 grade. Reaches or exceeds the color fastness of partial petrochemical dye dyeing, and can lead the sorghum husk pigment to replace partial chemical dye to be applied to the dyeing industry in batches.
Example two
Selecting praseodymium chloride, and adding pure water to dissolve into a light rare earth praseodymium chloride aqueous solution with the content of 10%.
Preferably ripe leaves with high content of metal elements, such as red brown fruit or red camellia. Soaking camellia leaves according to the weight ratio of 1 part of leaves and 3 parts of water, simultaneously adding 0.5 percent tartaric acid according to the weight of the solution, fermenting for 5 days at 30 ℃ in a closed manner, controlling the fermentation temperature, replenishing purified water at proper time when the temperature is higher than 35 ℃ to reduce the temperature, and keeping the temperature below 35 ℃. After a period of time, the fermentation solution is not heated any more, and the fermented liquid is filtered out by a 200-mesh stainless steel net before the leaves are only softened, discolored and not rotten. After fermentation, the leaves are pressed and filtered into cakes by a filter press, and the cake-shaped fermentation leaves can be used for subsequent composting. Filtering the fermentation solution after filter pressing again through a stainless steel mesh of 200 meshes, and combining the fermentation solution with the previous fermentation solution.
Adding 31.5 parts of purified water into a stainless steel reaction kettle, sequentially adding 1 part of vitamin B3 and 15 parts of praseodymium chloride aqueous solution, starting a stirrer, stirring for 20 minutes at a rotating speed of more than 200 revolutions per minute, sequentially adding 1 part of tartaric acid, 1 part of sodium polyaspartate, 50 parts of camellia leaf fermented solution and 0.5 part of Turkey red oil, continuously stirring for 30 minutes, and filtering and discharging.
The dyeing method comprises the following steps: the method adopts a compound dyeing mode of dyeing promotion in one bath with sorghum husk pigment and after-bath mordant dyeing, and specifically comprises the following steps: the ratio of mercerized wool fabric to be dyed to water is 1:15, and the weight of sorghum shell pigment relative to the weight of water is 8 g/l. Adding sorghum shell pigment before heating to 75 ℃, adding 1g/l of the natural dyeing auxiliary agent prepared by the method in one bath, dyeing for 60 minutes at 75 ℃, adding 30g/l of the natural dyeing auxiliary agent prepared by the method after dyeing, and continuously preserving heat for 25 minutes. And (3) after dyeing is finished, cleaning for 1-2 times by using hot water with the temperature of over 75 ℃, and dehydrating and drying.
After the dyeing processing, the color fastness of the mercerized wool fabric, such as washing, soaping, dry and wet friction, light resistance and the like, is improved by 1-2 levels. Reaches or exceeds the color fastness of partial petrochemical dye dyeing, and can lead the sorghum husk pigment to replace partial chemical dye to be applied to the dyeing industry in batches.
EXAMPLE III
Selecting neodymium chloride, adding purified water to dissolve the neodymium chloride into a light rare earth neodymium chloride aqueous solution with the content of 10 percent.
Preferably ripe leaves with high content of metal elements, such as red brown fruit or red camellia. Soaking camellia leaves according to the weight ratio of 1 part of leaves to 3 parts of water, simultaneously adding 1% tartaric acid according to the weight of the solution, fermenting for 4 days at 30 ℃ in a closed manner, controlling the fermentation temperature, replenishing purified water at proper time when the temperature is higher than 35 ℃ to reduce the temperature, and keeping the temperature below 35 ℃. After a period of time, the fermentation solution is not heated any more, and the fermented liquid is filtered out by a 200-mesh stainless steel net before the leaves are only softened, discolored and not rotten. After fermentation, the leaves are pressed and filtered into cakes by a filter press, and the cake-shaped fermentation leaves can be used for subsequent composting. Filtering the fermentation solution after filter pressing again through a stainless steel mesh of 200 meshes, and combining the fermentation solution with the previous fermentation solution.
22.5 parts of purified water is added into a stainless steel reaction kettle, then 0.5 part of vitamin B3 and 15 parts of neodymium chloride aqueous solution are sequentially added, a stirrer is started, the rotating speed is more than 200 revolutions per minute, the mixture is stirred for 20 minutes, then 0.5 part of tartaric acid, 1 part of polyaspartic acid sodium, 60 parts of camellia leaf fermentation solution and 0.5 part of Turkey red oil are sequentially added, the mixture is continuously stirred for 30 minutes, and then the mixture is filtered and discharged.
The dyeing method comprises the following steps: the method adopts a compound dyeing mode of dyeing promotion in one bath with sorghum husk pigment and after-bath mordant dyeing, and specifically comprises the following steps: the ratio of the shrink-proof wool garment to water is 1:35, and the weight of sorghum husk pigment relative to water is 8 g/l. Adding sorghum shell pigment before heating to 75 ℃, then adding 1g/l of the natural dyeing auxiliary prepared by the method in one bath, dyeing for 60 minutes at 75 ℃, then adding 30g/l of the natural dyeing auxiliary prepared by the method after dyeing, and continuing to keep the temperature for 25 minutes. And (3) after dyeing is finished, cleaning for 1-2 times by using hot water with the temperature of over 75 ℃, and dehydrating and drying.
After the dyeing processing, the dyeing efficiency and the color fastness can be improved, so that the sorghum husk pigment replaces part of chemical dyes to be applied to the dyeing industry in batches.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for all or part of the technical features thereof, and such modifications or substitutions do not depart from the spirit of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the claims and the specification of the present invention.
Claims (10)
1. A natural dyeing auxiliary for dyeing sorghum husk pigment plants is characterized by comprising the following raw materials in parts by weight: 0.5-5 parts of B vitamins, 10-50 parts of light rare earth aqueous solution, 1-3 parts of tartaric acid, 5-1 part of sodium polyaspartate, 60-5 parts of camellia leaf fermentation solution, 1-0.5 part of Turkey red oil and 22.5-35.5 parts of purified water.
2. The natural dyeing assistant for sorghum husk pigment plant dyeing according to claim 1, characterized in that the B vitamin is VB3
The natural dyeing assistant for sorghum husk pigment plant dyeing according to claim 1, characterized in that the light rare earth aqueous solution is selected from lanthanum citrate or praseodymium citrate or neodymium chloride or praseodymium chloride, preferably lanthanum citrate, and the lanthanum citrate is added with pure water to be dissolved into 10% light rare earth aqueous solution.
3. The natural dyeing auxiliary agent for dyeing sorghum husk pigment plant according to claim 1, wherein the preparation method of the camellia leaf fermentation solution comprises: preferably selecting mature leaves or old leaves with high metal element content such as red-peel brown fruits or red camellia leaves, soaking the camellia leaves according to the weight component proportion of 1 part of leaves added with 3 parts of water, simultaneously adding 0.5-1% of tartaric acid according to the weight of the solution, and fermenting in a closed manner at the temperature of 30-35 ℃ for 1-7 days.
4. When the temperature is higher than 35 ℃, adding purified water to reduce the temperature in due time, and keeping the temperature below 35 ℃.
5. When the temperature of the fermentation solution is not increased any more, the fermented liquid is filtered by a stainless steel mesh of 200 meshes before the leaves are only softened, discolored and not rotten.
6. And (3) carrying out filter pressing on the fermented leaves by using a filter press to form cakes, filtering the filter-pressed fermented solution by using a 200-mesh stainless steel net again, and combining the filtered fermented solution with the previous fermented solution.
7. A method for preparing the natural dyeing assistant for sorghum husk pigment plant dyeing according to any one of claims 1 to 4, characterized by comprising the following steps: adding 22.5-35.5 parts of purified water into a stainless steel reaction kettle, sequentially adding 0.5-5 parts of B vitamins and 10-50 parts of light rare earth aqueous solution, starting a stirrer, stirring for 20-30 minutes at a rotating speed of more than 200 revolutions per minute, and sequentially adding 1-3 parts of tartaric acid; 5-1 part of polyaspartic acid sodium; 60-5 parts of camellia leaf fermentation solution; 1-0.5 part of Turkey red oil, continuously stirring for 30-40 minutes, filtering and discharging.
8. The dyeing method of the natural dyeing auxiliary agent for sorghum husk pigment plant dyeing according to any one of claims 1 to 4, characterized by adopting a compound dyeing mode of accelerating dyeing in the same bath with sorghum husk pigment and mordant dyeing in the later bath, which specifically comprises the following steps: the ratio of the dyed fabric to water is 1: 5-40, and the weight of sorghum husk pigment relative to water is 1-15 g/l.
9. Adding sorghum husk pigment before heating to 75 ℃, then adding 1-10 g/l of natural dyeing auxiliary agent for dyeing sorghum husk pigment plants in one bath, dyeing for 30-90 minutes at 75-98 ℃, then adding 10-50 g/l of natural dyeing auxiliary agent for dyeing sorghum husk pigment plants after dyeing, and continuing to keep the temperature for 20-40 minutes.
10. And after dyeing is finished, cleaning for 1-2 times by using hot water with the temperature of over 75 ℃, and then dehydrating and drying.
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| CN113480872A (en) * | 2021-07-07 | 2021-10-08 | 苏州麻朵纺织科技有限公司 | Method for preparing chestnut shell vegetable dye by subcritical method and dyeing method thereof |
| CN113550158A (en) * | 2021-07-06 | 2021-10-26 | 苏州麻朵纺织科技有限公司 | Plant dyeing method for polylactic acid fiber fabric and garment |
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