CN110055773B - Two-bath dyeing process for PLA/PHBV blended yarn/tencel mixed fabric - Google Patents
Two-bath dyeing process for PLA/PHBV blended yarn/tencel mixed fabric Download PDFInfo
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- CN110055773B CN110055773B CN201910207448.3A CN201910207448A CN110055773B CN 110055773 B CN110055773 B CN 110055773B CN 201910207448 A CN201910207448 A CN 201910207448A CN 110055773 B CN110055773 B CN 110055773B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
- D06L1/12—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using aqueous solvents
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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
- D06P1/16—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 dispersed, e.g. acetate, 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
- D06P1/38—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 reactive dyes
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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
- D06P1/673—Inorganic compounds
- D06P1/67333—Salts or hydroxides
- D06P1/6735—Salts or hydroxides of alkaline or alkaline-earth metals with anions different from those provided for in D06P1/67341
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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
- D06P3/34—Material containing ester groups
- D06P3/52—Polyesters
- D06P3/54—Polyesters using dispersed 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
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
- D06P3/66—Natural or regenerated cellulose using reactive dyes
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Abstract
The invention provides a two-bath dyeing process of PLA/PHBV blended yarn/tencel mixed fabric, which mainly comprises the steps of firstly carrying out low-temperature dyeing on the PLA/PHBV blended yarn/tencel mixed fabric subjected to pretreatment through disperse dyes, secondly carrying out reduction cleaning on the mixed fabric, and finally carrying out sheath dyeing on the tencel mixed fabric by using reactive dyes. Compared with the prior art, the invention has the advantages that 1, the temperature of the PLA/PHBV blended yarn dyed by the disperse dye can be reduced to 80 ℃, and the damage of high temperature to the fiber can be avoided; 2. the invention can dye tencel with reactive dye under low alkali condition, and can obtain higher dyeing depth; 3. the invention determines the dye and the assistant for dyeing PLA/PHBV blended yarn/tencel mixed fabric, provides a disperse active two-bath dyeing process, has the characteristics of uniform color, good washing fastness and good rubbing fastness, and can save energy and reduce production cost.
Description
Technical Field
The invention relates to a dyeing process of PLA/PHBV blended yarn/tencel mixed fabric, belonging to the dyeing process technology of disperse/reactive dyes.
Background
Traditional synthetic polyester fiber production is from petroleum, its resources are not renewable, and the waste is difficult to biodegrade. In recent years, with the increasing awareness of environmental protection, biodegradable bio-based polyester fibers have been developed. PLA is polylactic acid fiber, and PHBV fiber is the copolymer of 3-hydroxybutyrate and 3-hydroxyvalerate, and both belong to degradable fiber. The textile fabric adopting the blending of the two fibers has the characteristics of rapid degradation, environmental friendliness, good hand feeling and proper strength. But the poor heat resistance and alkali resistance of the fabric can influence the mechanical property, the hand feeling and the like of the fiber after the fabric is processed (spinning, dyeing, ironing and the like), so that the PLA/PHBV blended yarn/tencel interwoven fabric is developed to improve the hand feeling and the mechanical property of the fabric. The PLA/PHBV blended yarn/tencel fabric belongs to an interwoven fabric, and is a fabric formed by interweaving yarns of different fibers, namely PLA/PHBV blended yarn and tencel fiber, serving as warp and weft yarns, which are used as raw materials for forming the warp and weft directions of the fabric. The blended fabric is made by blending two or more different types of fibers to form yarns. Whether interwoven or blended, multiple fibers are more complex to dye than two fibers, two fibers than one. PLA/PHBV blended yarn and tencel are fibers with different chemical properties, and how to realize the level dyeing of warp and weft yarns with different properties and a series of effects of expected color depth, color fastness, fiber strength and the like in the dyeing process after the fibers are interwoven to form a fabric is an important consideration factor. Meanwhile, the heat resistance, alkali resistance and other factors of the PLA/PHBV blended yarn are also considered in the dyeing and finishing process, so that the mechanical property and hand feeling of the fiber after dyeing and finishing processing are prevented from being seriously influenced. However, in the prior art, the dyeing process of the PLA/PHBV blended yarn is mostly aimed at, and the research on the dyeing aspect of the PLA/PHBV blended yarn/tencel mixed fabric is not much, so that the development of the dyeing process of the PLA/PHBV blended yarn/tencel mixed fabric is necessary.
Disclosure of Invention
In order to solve the technical problems, the invention provides a dyeing process aiming at PLA/PHBV blended yarn/tencel mixed fabric, which has the characteristics of uniform color, high washing fastness and high rubbing fastness, and can save energy and reduce production cost.
The technical scheme of the invention is to provide a two-bath dyeing process of PLA/PHBV blended yarn/tencel interwoven fabric, which comprises the following steps:
(1) refining and deoiling PLA/PHBV blended yarn/tencel interwoven fabric;
(2) dissolving a disperse dye which is 0.5-1% of the weight of PLA/PHBV blended yarn in the mixed fabric into a glacial acetic acid solution with the pH value of 4.5-5.5, adding an environment-friendly carrier to prepare a dye solution, wherein the concentration of the environment-friendly carrier in the dye solution is 0.4-0.6g/L, and placing the mixed fabric treated in the step (1) into the dye solution with the bath ratio of 1:20-30 for dyeing: firstly, heating to 60-65 ℃ at the speed of 2-4 ℃/min, heating to 80-85 ℃ at the speed of 1-2 ℃/min, preserving heat for 30-40min, and then cooling to 50-60 ℃ at the speed of 3-5 ℃/min, and taking out the interwoven fabric;
(3) reducing and cleaning the interwoven fabric treated in the step (2), wherein in the reducing and cleaning solution: sodium hydrosulfite (sodium hydrosulfite) 0.5-1g/L, anhydrous sodium carbonate 0.5-1g/L, bath ratio 1:20-30, and reducing and cleaning at 75-80 deg.C for 10-20 min;
(4) and (3) carrying out over-dyeing on the interwoven fabric treated in the step (3) with reactive dye, wherein the mass concentration of the reactive dye in over-dyeing liquid is 0.5-1% of the weight of the components of the interwoven fabric, the concentration of anhydrous sodium sulfate is 40-60g/L, the concentration of anhydrous sodium carbonate is 0.5-1g/L, the bath ratio is 1:20-30, and dyeing is carried out for 30-40min at the temperature of about 80-85 ℃.
(5) And (3) adding the dyed mixed fabric obtained in the step (4) into clear water for washing once, treating the mixed fabric in a neutral detergent solution at the temperature of 75-80 ℃ for 10-20min, wherein the using amount of the neutral detergent is 1-2g/L, washing the mixed fabric once again to remove the dye flooding on the cloth surface, and drying the mixed fabric at the temperature of 75-80 ℃.
Further, the desizing and oil removing process in the step (1) is that 2g/L of refining and deoiling agent is added into the PLA/PHBV blended yarn/tencel mixed fabric in a solution with the pH value of 8-9, and desizing and oil removing treatment is carried out for 20-30min at the temperature of 80-85 ℃.
Further, the disperse dye in the step (2) is a low-temperature ACE series dye, preferably 3 dyes, which are respectively three primary colors of disperse red R-ACE, disperse yellow R-ACE and disperse blue R-ACE, and the 3 dyes are provided by Zhejiang Longsheng dye Co Ltd; the reactive dyes in the step (4) are low-alkali series dyes, preferably 3 dyes, which are three primary colors of reactive red DH-2G, reactive yellow DH-NR and reactive blue DH-BB respectively, and the series dyes are provided by Yufeng dye Co., Ltd, in Fushan City.
Further, in the PLA/PHBV blended yarn/tencel interwoven fabric, the content (mass percentage) of the tencel is between 50 and 60 weight percent; in the PLA/PHBV blended yarn in the mixed fabric, the content (mass percentage) of PHBV is between 10 and 30 weight percent, and the balance is PLA. It should be noted that the two-bath dyeing is suitable for PLA/PHBV blended yarn/tencel interwoven fabrics, and the two-bath dyeing is most suitable for the two-bath dyeing.
The invention has the advantages and beneficial effects that:
1. the invention can reduce the temperature of PLA/PHBV blended yarn dyed by disperse dye to 80 ℃, and can avoid the damage of high temperature to fiber;
2. the invention can dye tencel with reactive dye under low alkali condition, and can obtain higher dyeing depth;
3. the invention determines the dye and the assistant for dyeing PLA/PHBV blended yarn/tencel mixed fabric, provides a disperse reactive dye two-bath dyeing process, has the characteristics of uniform color, good washing fastness and good rubbing fastness, and can save energy and reduce production cost.
Detailed Description
The present invention will be further described with reference to the following embodiments.
The PLA/PHBV blended yarn is biodegradable fiber, and has considerable application prospect under increasingly severe environmental protection requirements. At present, PLA/PHBV blended yarn is dyed by wetting the PLA/PHBV blended yarn in deionized water, cleaning and then carrying out sectional temperature rise control by using disperse dyes. The object processed by the invention is PLA/PHBV blended yarn/tencel mixed fabric, which is different from the PLA/PHBV blended yarn, the PLA/PHBV blended yarn is a filament or staple for textile, which is a processing raw material of fabric fabrics, the fibers are clear, no influence exists among the fibers, the characteristics of the fibers are basically close to the PLA characteristics after the content of the PHBV in the blended yarn is controlled, and the factors considered for dyeing are relatively single. The invention relates to a PLA/PHBV blended yarn/tencel interwoven fabric, which is formed by interweaving warp and weft yarns with different properties, wherein the yarns are mutually overlapped, particularly, the PLA/PHBV fibers and the tencel have different dyeing conditions due to different properties, for example, disperse dyes can stain the tencel, so that dyeing defects such as color spots, color difference and the like are caused, and the alkali resistance problem of the disperse dyes is solved.
Before dyeing the mixed fabric, desizing and deoiling the mixed fabric instead of simply cleaning the mixed fabric with water, the reason is that the fabric is formed by mutually overlapping and interweaving warp and weft yarns, sizing treatment is carried out on the yarns in order to prevent fiber breakage and protect the strength of the fibers during weaving, and sizing agent is not easy to remove only by boiling in water; in addition, the lubricant is added during spinning production, is a hydrophobic substance, is insoluble in water, and cannot be well removed only by water. Therefore, it is preferable to use and remove alkaline agent in the pretreatment process, and the deoiling agent can be HK-1032B deoiling scouring agent, HK-117 deoiling agent, HK-115 emulsifying deoiling agent, etc. It can be seen that the pretreatment in step (1) is adopted in the present invention because the lubricant is added during the spinning process, the sizing process is performed during the weaving process, and the fabric is stained during the transportation and storage processes, so that the desizing and degreasing processes are performed.
When the disperse dye is adopted for dyeing, because the gaps among the PLA/PHBV fibers in the interwoven fabric are small, the disperse dye is not easy to move and attach to the fibers to realize dyeing, and the fibers are bulked to achieve the purpose of increasing the fiber pores by adding environment-friendly carriers, such as an environment-friendly dyeing carrier JYK POW, an environment-friendly carrier BIP, an environment-friendly carrier SML and the like, so that the disperse dye is favorable for dyeing. And because the PLA/PHBV fiber is not high-temperature resistant, the fiber gap can not be increased by a method of increasing the temperature, and the requirement of reducing the dyeing temperature can be met by adding an environment-friendly carrier. It can be seen that when the disperse dye is used for dyeing in the invention, how to reduce the dyeing temperature and obtain good level dyeing is very critical. The temperature of PLA/PHBV dyed by the disperse dye is reduced to 80 ℃ by adopting a method of adding an environment-friendly carrier, and the effect of uniform dyeing is realized by controlling the heating and cooling rates.
When the common reactive dye is dyed, 10-30g/L of anhydrous sodium carbonate is added for color fixation at the temperature of 60 ℃, the alkalinity is strong, the invention selects high-temperature low-alkali DH series reactive dye for dyeing, the dosage of the anhydrous sodium carbonate is only 0.5-1g/L at the temperature of 80 ℃, the PLA/PHBV blended yarn can be prevented from being damaged, and the burden of wastewater treatment is reduced.
The purpose of the reduction cleaning in the step (3) is to clean loose colors and increase color fastness. The concentration of the sodium hydrosulfite is limited by 0.5-1.0g/L and the concentration of the anhydrous sodium carbonate is limited by 0.5-1g/L, so that the reductive cleaning solution is ensured to be alkalescent, reductive cleaning is carried out under the condition, and the dye which is not fixed on the fiber can be effectively removed, so that the cleaning is cleaner.
The purpose of soaping (treatment with neutral detergent) after the completion of the over dyeing is to wash away the loose color and increase the color fastness. The treatment with the concentration of the neutral detergent of 1-2g/L can ensure that the generated covalent bond is relatively stable, and simultaneously can well remove loose color and improve color fastness.
In the following embodiment, the content (mass%) of tencel in the PLA/PHBV blended yarn/tencel interwoven fabric is 50 wt%; in the PLA/PHBV blended yarn (including PLA/PHBV blended fabric), the content (mass percentage) of PHBV is between 20 wt%, and the balance is PLA.
Example 1
Disperse dye dyeing process for PLA/PHBV blended fabric
PLA/PHBV blended fabric 3g
Disperse Red R-ACE 1% (o.m.f. based on fabric weight)
Disperse yellow R-ACE 1% (o.m.f: based on fabric weight)
Disperse blue R-ACE 1% (o.m.f: based on fabric weight)
Adjusting pH value to 4.5-5.5 with glacial acetic acid
The dosage of the environment-friendly carrier is 0.6g/L
The temperature is 80 DEG C
For a period of 30min
Bath ratio of 1:30
PLA/PHBV blended fabric disperse dye is not loaded with a dye in comparative example 1, namely, the carrier dosage in the process is 0g/L, the dyeing temperature is 100 ℃, and other processes are the same as in example 1.
TABLE 1 results of this example and of the counterstaining
The K/S value represents the color depth of the dyed fabric, the greater the K/S value is at the same wavelength, the darker the color is, which indicates that the dye is dyed by the dye group under the process conditions, the dye amount with the same concentration, and the dyeing depth is deeper when the carrier is added than that when the carrier is not added when the dye is dyed at the same temperature; the fabric color gain was darker at 80 ℃ loading than at 100 ℃ non-loading, indicating that the vehicle was able to lower the dyeing temperature and increase the color yield. As can be seen from the data in Table 1 above, the effect of low temperature dyeing with the carrier added is superior to that of the comparative example.
Example 2
Light color process for dyeing PLA/PHBV blended yarn/tencel mixed fabric by using disperse dye
PLA/PHBV/tencel mixed fabric 3g (3 groups)
Dyeing PLA/PHBV with disperse dye:
disperse Red R-ACE 0.5% (o.m.f. based on the weight of PLA/PHBV blended yarn component in the mixed fabric)
Disperse yellow R-ACE 0.5% (o.m.f. based on the weight of PLA/PHBV blended yarn component in the mixed fabric)
Disperse blue R-ACE 0.5% (o.m.f. based on the weight of PLA/PHBV blended yarn component in the mixed fabric)
Adjusting pH value to 4.5-5.5 with glacial acetic acid
Environment-friendly carrier 0.4g/L
The temperature is 80 DEG C
For a period of 30min
Bath ratio of 1:30
Reduction cleaning process:
sodium hydrosulfite 0.5g/L
0.5g/L anhydrous sodium carbonate
The temperature is 80 DEG C
For 10min
Bath ratio of 1:30
Dyeing tencel with reactive dye:
reactive Red DH-2G 0.5% (o.m.f. based on the weight of Tencel component in the intertexture)
Reactive yellow DH-NR 0.5% (o.m.f. based on the weight of Tencel in the interwoven fabrics)
0.5% of reactive blue DH-BB (o.m.f. based on the weight of tencel component in the mixed fabric)
Anhydrous sodium sulfate 40g/L
0.5g/L anhydrous sodium carbonate
The temperature is 80 DEG C
For a period of 30min
Bath ratio of 1:30
The soaping process comprises the following steps:
neutral detergent 1g/L
The temperature is 80 DEG C
For 10min
Bath ratio of 1:30
PLA/PHBV blended yarn/tencel fabric reactive dye is dyed in comparative example 2 by conventional alkali addition, the conventional alkali addition condition of the reactive dye is that the dosage of anhydrous sodium carbonate is 10g/L, and other processes are the same as those in example 2.
TABLE 2 dyeing results of this example
The K/S value represents the color depth of the dyed fabric, and the larger the K/S value is, the darker the color of the fabric is under the same wavelength, which shows that the fabric dyed under the condition of low-alkali dyeing has darker color and equivalent fastness when the dye is used for dyeing under the process conditions. The test data in table 2 above shows that the effect of low alkali staining is better than that of the comparative example.
Example 3
Disperse dye dyeing PLA/PHBV blended yarn/tencel mixed fabric neutral color process
PLA/PHBV/tencel mixed fabric 3g (3 groups)
Dyeing PLA/PHBV with disperse dye:
disperse Red R-ACE 1% (o.m.f. based on the weight of PLA/PHBV blended yarn component in the mixed fabric)
Disperse yellow R-ACE 1% (o.m.f. based on the weight of PLA/PHBV blended yarn component in the mixed fabric)
Disperse blue R-ACE 1% (o.m.f. based on the weight of PLA/PHBV blended yarn component in the mixed fabric)
Adjusting pH value to 4.5-5.5 with glacial acetic acid
Environment-friendly carrier 0.6g/L
The temperature is 80 DEG C
The time is 40min
Bath ratio of 1:30
Reduction cleaning process:
sodium hydrosulfite 1g/L
Anhydrous sodium carbonate 1g/L
The temperature is 80 DEG C
For a period of 20min
Bath ratio of 1:30
Dyeing tencel with reactive dye:
activated Red DH-2G 1% (o.m.f. based on the weight of Tencel component in the intertexture)
Reactive yellow DH-NR 1% (o.m.f. based on the weight of Tencel in the interwoven fabrics)
Reactive blue DH-BB 1% (o.m.f. based on the weight of Tencel component in the intertexture)
Anhydrous sodium sulfate 60g/L
0.5g/L anhydrous sodium carbonate
The temperature is 80 DEG C
The time is 40min
Bath ratio of 1:30
The soaping process comprises the following steps:
neutral detergent 2g/L
The temperature is 80 DEG C
For a period of 20min
Bath ratio of 1:30
PLA/PHBV/tencel mixed fabric reactive dye is dyed by conventional alkali, and compared with the comparative example 3, the conventional alkali adding condition of the reactive dye is that the dosage of anhydrous sodium carbonate is 15g/L, and other processes are the same as the example 3.
TABLE 3 dyeing results of this example
The K/S value represents the color depth of the dyed fabric, and the larger the K/S value is, the darker the color of the fabric is under the same wavelength, which shows that the fabric dyed by the dye under the process conditions has darker color and little difference in fastness. As can be seen from the data in Table 3 above, the effect of low alkali staining is superior to that of the comparative example.
Materials, reagents and experimental equipment related to the embodiment of the invention are all commercial products which accord with the field of textile processing if no special description is provided.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, modifications and decorations can be made without departing from the core technology of the present invention, and these modifications and decorations shall also fall within the protection scope of the present invention. Any changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (5)
- The two-bath dyeing process of the PLA/PHBV blended yarn/tencel interwoven fabric is characterized by comprising the following steps of:(1) desizing and deoiling PLA/PHBV blended yarn/tencel mixed fabric;(2) dissolving a disperse dye which is 0.5-1% of the weight of PLA/PHBV blended yarn in the mixed fabric into a glacial acetic acid solution with the pH value of 4.5-5.5, adding an environment-friendly carrier to prepare a dye solution, wherein the concentration of the environment-friendly carrier in the dye solution is 0.4-0.6g/L, and placing the mixed fabric treated in the step (1) into the dye solution with the bath ratio of 1:20-30 for dyeing: firstly, heating to 60-65 ℃ at the speed of 2-4 ℃/min, heating to 80-85 ℃ at the speed of 1-2 ℃/min, preserving heat for 30-40min, and then cooling to 50-60 ℃ at the speed of 3-5 ℃/min, and taking out the interwoven fabric;(3) reducing and cleaning the interwoven fabric treated in the step (2), wherein in the reducing and cleaning solution: sodium hydrosulfite 0.5-1g/L, anhydrous sodium carbonate 0.5-1g/L, bath ratio 1:20-30, reducing and cleaning at 75-80 deg.C for 10-20 min;(4) carrying out over-dyeing on the interwoven fabric treated in the step (3) with reactive dye, wherein the mass concentration of the reactive dye in over-dyeing liquid is 0.5-1% of the weight of the components of the interwoven fabric, the using amount of anhydrous sodium sulfate is 40-60g/L, the concentration of anhydrous sodium carbonate is 0.5-1g/L, the bath ratio is 1:20-30, and dyeing is carried out for 30-40min at the temperature of 80-85 ℃; and (5) adding the dyed mixed fabric obtained in the step (4) into clear water for washing once, treating in a neutral detergent solution at the temperature of 75-80 ℃ for 10-20min, wherein the using amount of the neutral detergent is 1-2g/L, washing once again to remove the dye flooding on the cloth surface, and then drying at the temperature of 75-80 ℃.
- 2. The two-bath dyeing process of PLA/PHBV blended yarn/tencel mixed fabric as claimed in claim 1, wherein the desizing and degreasing process in step (1) is carried out by placing PLA/PHBV blended yarn/tencel mixed fabric in a solution with pH of 8-9 and 2g/L of scouring degreaser, and desizing and degreasing at 80-85 ℃ for 20-30 min.
- 3. The two-bath dyeing process of PLA/PHBV blended yarn/tencel mixed fabric according to claim 1, wherein the disperse dyes in step (2) are 3 dyes of low temperature ACE series, which are three primary colors of disperse red R-ACE, disperse yellow R-ACE and disperse blue R-ACE, respectively.
- 4. The two-bath dyeing process of PLA/PHBV blended yarn/tencel interwoven fabric according to claim 1, wherein the reactive dyes in step (4) are 3 dyes of low alkali series, namely three primary colors of reactive red DH-2G, reactive yellow DH-NR and reactive blue DH-BB.
- 5. The two-bath dyeing process of PLA/PHBV blended yarn/tencel interwoven fabric according to claim 1, wherein the content of tencel in the PLA/PHBV blended yarn/tencel interwoven fabric is between 50 and 60 wt%; and the PLA/PHBV blended yarn in the mixed fabric has the PHBV content of 10-30 wt% and the balance of PLA.
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| CN111206438B (en) * | 2020-02-20 | 2022-08-23 | 南京禾素时代抗菌材料科技有限公司 | Method for dyeing PLA/PHBV fiber fabric |
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