CN114293386A - One-bath one-step dyeing method for polyester-cotton fabric - Google Patents
One-bath one-step dyeing method for polyester-cotton fabric Download PDFInfo
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- CN114293386A CN114293386A CN202111569715.5A CN202111569715A CN114293386A CN 114293386 A CN114293386 A CN 114293386A CN 202111569715 A CN202111569715 A CN 202111569715A CN 114293386 A CN114293386 A CN 114293386A
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- 238000004043 dyeing Methods 0.000 title claims abstract description 238
- 238000000034 method Methods 0.000 title claims abstract description 108
- 229920000742 Cotton Polymers 0.000 title claims abstract description 98
- 239000004744 fabric Substances 0.000 title claims abstract description 88
- 239000000975 dye Substances 0.000 claims abstract description 98
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 42
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 44
- 239000003381 stabilizer Substances 0.000 claims description 27
- 239000000985 reactive dye Substances 0.000 claims description 25
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 22
- 235000011152 sodium sulphate Nutrition 0.000 claims description 22
- 238000005406 washing Methods 0.000 claims description 21
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- 238000011282 treatment Methods 0.000 claims description 13
- 239000000986 disperse dye Substances 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 5
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- 239000003086 colorant Substances 0.000 description 9
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- 229920004933 Terylene® Polymers 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 6
- 230000007062 hydrolysis Effects 0.000 description 6
- 238000006460 hydrolysis reaction Methods 0.000 description 6
- 239000005020 polyethylene terephthalate Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000000859 sublimation Methods 0.000 description 4
- 230000008022 sublimation Effects 0.000 description 4
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- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
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- JIHQDMXYYFUGFV-UHFFFAOYSA-N 1,3,5-triazine Chemical compound C1=NC=NC=N1 JIHQDMXYYFUGFV-UHFFFAOYSA-N 0.000 description 1
- OMRXVBREYFZQHU-UHFFFAOYSA-N 2,4-dichloro-1,3,5-triazine Chemical compound ClC1=NC=NC(Cl)=N1 OMRXVBREYFZQHU-UHFFFAOYSA-N 0.000 description 1
- ORLGPUVJERIKLW-UHFFFAOYSA-N 5-chlorotriazine Chemical compound ClC1=CN=NN=C1 ORLGPUVJERIKLW-UHFFFAOYSA-N 0.000 description 1
- 241000588698 Erwinia Species 0.000 description 1
- 241001553290 Euphorbia antisyphilitica Species 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
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- 230000003115 biocidal effect Effects 0.000 description 1
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- AFOSIXZFDONLBT-UHFFFAOYSA-N divinyl sulfone Chemical class C=CS(=O)(=O)C=C AFOSIXZFDONLBT-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to a one-bath one-step dyeing method for polyester-cotton fabrics, wherein dyes used in the dyeing method are selected, the compatibility of a used dye system is excellent, a pretreatment agent is added at the beginning of a dye vat, the pretreatment of the polyester-cotton fabrics can be completed before the polyester-cotton fabrics are dyed, and the dyed fabrics are soaped after the dyeing is completed.
Description
Technical Field
The dyeing method can obviously shorten the dyeing time of the traditional polyester cotton, obviously reduce the liquid discharge times and is environment-friendly in the dyeing process.
Background
The traditional polyester-cotton fabric is prepared from cotton fibers and polyester fibers in a blending mode, and the fabric further has the moisture absorption and ventilation performance of the cotton fibers and the stiffness and smoothness durability of the polyester fibers, so that the market demand of the fabric is extremely high. However, the cotton fiber and the polyester fiber in the polyester-cotton fabric are two completely different chemical structures, so the difference in dyeing performance is obvious. The traditional dyeing of cotton fiber can use direct dye, reactive dye, anthraquinone dye and the like, but for the dyeing of polyester fiber, the disperse dye is mainly used; meanwhile, the dyeing conditions of the two fibers are different, and the dyeing temperature is below 100 ℃ for the dyeing of cotton fibers, but the dyeing temperature is up to 130 ℃ for the dyeing conditions of polyester fibers, which must be dyed under high temperature and high pressure conditions.
Based on the properties of cotton fibers and polyester fibers, the dyeing of polyester-cotton fabrics is divided into a one-bath two-step method, a two-bath two-step method and a one-bath one-step method, wherein the one-bath two-step method or the two-bath method is that the cotton fibers in the polyester-cotton fabrics are dyed firstly, the dyeing temperature is about 60 ℃, the cotton fibers are washed with water after being dyed, then the temperature is raised to 130 ℃, the polyester fibers are dyed, and then the subsequent washing treatment is carried out. And the one-bath one-step dyeing is that a dyeing material is added in the dyeing process, then the temperature is raised to a certain temperature, the dyeing is carried out by heat preservation, the polyester fiber and the cotton fiber are simultaneously dyed in an attached mode under the dyeing condition, and the operations of soaping, washing and the like are carried out after the dyeing is finished. Compared with the one-bath one-step dyeing method, the one-bath one-step dyeing method has high dyeing efficiency, omits the washing process after cotton dyeing and shortens the dyeing time, but because the same dyes in the dyeing bath have different properties, the dyeing uniformity and the color fastness are greatly influenced, and the dyeing is easy to cause color difference.
In the prior art, as disclosed in the publication: the invention patent of CN109505147A discloses a novel one-bath one-step dyeing method for polyester cotton, which comprises the following specific steps: adding disperse dye into water at 20-30 deg.C, and dyeing for 25-35 min; keeping the normal temperature unchanged, adding a candelilla difference eliminating agent into the solution, and soaking for 30-35 minutes; adding reactive dye into the solution, heating to 60 ℃ at a speed of 1-2.5 ℃/min, and maintaining for 10-20 minutes; then adding soda ash, preserving heat for 40-60 minutes at 60 ℃, heating to 130 ℃ at the temperature of 2.5-3.5 ℃/min, and preserving heat for 30-50 minutes; cooling to 60 deg.C at a temperature of 2.5-3.5 deg.C/min, soaking in one-bath soap lotion for 10-20min, cooling to 20-30 deg.C, and cleaning. However, the total time of the process is far more than 270min, and if the washing time is calculated, the washing time is at least more than 6 hours, and the process of the patent firstly dyes the cotton fiber under the low temperature condition and then further dyes the cotton fiber under the high temperature condition, and the dyeing time can be obviously shortened compared with the traditional one-bath two-step method. Although it is significantly shortened in time, it is difficult to confirm its dyeing effect due to process information.
Based on the problems of high energy consumption, low efficiency and dyeing quality in polyester dyeing in the prior art, the disclosure provides a novel one-bath one-step dyeing method for polyester-cotton fabric, which is used for solving the problems of energy consumption, pollution, efficiency and dyeing uniformity of traditional dyeing.
Disclosure of Invention
The disclosure aims to provide a one-bath one-step dyeing method for polyester-cotton fabric, which has the advantages of high dyeing efficiency, uniform dyeing, less energy consumption, less discharge of waste liquid after dyeing and the like compared with the traditional polyester-cotton dyeing method.
The dyeing method comprises the steps of dyeing at high temperature to simultaneously dye polyester fibers and cotton fibers, and in the subsequent process, raising the temperature again to adjust and dye cotton fabrics.
The other concept of the method is that overflow washing is carried out after the polyester-cotton fabric is dyed in the dyeing process, dye liquor in a dye bath does not need to be discharged, soaping and color mixing (color fixing) are carried out on the cotton fabric, the discharge of the dye liquor can be reduced, and the dyeing environment-friendly advantage is obvious.
The other conception of the present disclosure is that after the dyeing process is finished, the cotton can be taken out of the cylinder by direct washing, the discharge of the dyeing waste liquid is reduced, and the efficiency is improved.
Another concept of the present disclosure is that in the dyeing process, polyester cotton is dyed in one bath, wherein the polyester is dyed under alkaline conditions, resulting in a fabric with better softness.
The other concept of the present disclosure is that the dyeing process combines the dyeing pretreatment of the polyester-cotton fabric, the polyester dyeing and the cotton dyeing into one step, and further improves the dyeing efficiency.
Another concept of the present disclosure is also that the amount of dyeing assistant used in the dyeing process is significantly reduced, and the COD content is significantly reduced in the discharge of dyeing waste liquid.
The other conception of the present disclosure is that the dye used in the dyeing process is the compound of the disperse dye and the reactive dye, and in the dyeing process, the reactive dye and the disperse dye are convenient to match, and the operation is simple and convenient.
The other concept of the present disclosure is also that after the polyester-cotton fabric is dyed, the polyester-cotton fabric is soaped and toned (fixed) by using an anionic soaping agent, so that the dyeing uniformity and the color fastness of the polyester-cotton fabric can be ensured.
Another concept of the present disclosure is also that the number of feeds of the dyeing process is significantly reduced and the liquor discharge is significantly reduced.
Specifically, the disclosure relates to a one-bath one-step dyeing method for polyester-cotton fabric, which is characterized by comprising the following operation steps:
step (1) dye blending;
specifically, a dyeing auxiliary and a dye are added into a dye vat;
the dyeing auxiliary agent is anhydrous sodium sulphate;
the anhydrous sodium sulphate is 70-130 g/L;
more specifically, the using amount of the anhydrous sodium sulphate is adjusted according to the dyeing depth;
further, when the dyeing depth is less than 0.2%, the using amount of anhydrous sodium sulphate is 70-90 g/L;
when the dyeing depth is 0.2-0.5%, the using amount of anhydrous sodium sulphate is 90-105 g/L;
when the dyeing depth is 0.5-1%, the using amount of anhydrous sodium sulphate is 105-120 g/L;
when the dyeing depth is more than 1%, the using amount of anhydrous sodium sulphate is 120-130 g/L;
more specifically, when the depth is more than 1%, the amount of anhydrous sodium sulphate is 120 g/L.
It should be noted here that the dye depth is mainly the amount of dye added during the dyeing process, and the explanation of the present disclosure for the dye depth follows here.
The dyeing auxiliary used in the method is mainly anhydrous sodium sulphate, and is added before dyeing, part of the dyeing auxiliary can be used for pretreating polyester-cotton fabrics in the dyeing process to reduce grease and impurities on the fabrics, on the other hand, the anhydrous sodium sulphate is an electrolyte in the dyeing process, cotton fabrics have negative charges in a dye bath, and the addition of the anhydrous sodium sulphate can improve the charge property of the dye bath, reduce the zeta potential of cotton fibers, promote the adsorption of active dyes to the cotton fibers, and further can obviously shorten the dyeing time.
But, however,
the anhydrous sodium sulphate has the effect of quickly adsorbing the dye onto the cotton fiber, and the dye can be quickly diffused into the fiber under a certain high-temperature condition, but one of the concepts of the dyeing process disclosed by the invention is to simultaneously dye the terylene and the cotton under the high-temperature condition, the activity of the dye is higher, if the cotton is not uniformly dyed, dyeing defects and unevenness are inevitably caused, because the adding amount of the dyeing auxiliary agent is strictly controlled by the process, the using amount of the dyeing auxiliary agent is controlled through the dyeing depth, the process of dyeing the cotton under the high-temperature condition is ensured to be uniform, and the quality of the dyed fabric is improved.
The amount of the anhydrous sodium sulphate used in the invention is directly related to the dye, and the following description of the dye is specifically provided.
Further, the present disclosure adds a dye to the dye vat;
the dye is obtained by compounding a disperse dye and a reactive dye;
the compound dye is suitable for non-matching and convenient for color matching;
the reactive dye has a plurality of reactive groups;
the active group comprises at least two of halogenated s-triazinyl, halogenated pyrimidyl, vinyl sulfone, carboxyl pyridine s-triazinyl and phosphonic acid group.
The s-triazine is one of monochlorotriazine and dichloros-triazine;
in the dyeing process, the raw materials are specifically limited, and particularly, the reactive dye needs to ensure that the dye has better stability, dyeing property and leveling property under high temperature conditions, so that the reactive dye used in the process at least comprises two reactive groups.
At the same time, the user can select the desired position,
the reactive dye with multiple active groups has the advantages that in the dyeing process, due to the fact that molecular weight is enlarged, dye structure is changed, and dyeing speed is greatly limited, under the condition based on the dyeing auxiliary agent, proper adsorption and fiber internal diffusion performance can be guaranteed under the high-temperature condition, and the uniform dyeing effect under the high-temperature condition can be achieved.
In addition, the reactive dye used in the method has excellent stability under high temperature conditions and low hydrolysis rate.
Further, the dye is used in an amount of 0 to 5%, preferably 0 to 4%.
In some embodiments, the dye is a bright series dye;
the bright color series dyes comprise a bright color T series and a bright color C series.
Wherein the bright color T series is disperse dye, and the bright color C series is reactive dye;
more specifically, the soaping fastness of the bright T series monochromatic dyeing is more than 4 to 5 grades, and the test standard is ISO 105-C03;
the friction fastness of the bright T series is more than 3-4 grade, and the test standard is ISO 105-X12;
the light fastness of the bright T series is more than 5 grade, and the test standard is ISO 105-B01;
the sublimation fastness of the bright T series is more than 3 grades, preferably more than 4 grades, and the test condition is 180 ℃ and 30 s.
More specifically, the soaping fastness of the bright C series monochromatic dyeing is more than 4 to 5 grades, and the test standard is ISO 105-C03;
the friction fastness of the bright C series is more than 3-4 grade, and the test standard is ISO 105-X12;
the light fastness of the bright C series is more than 5 grade, and the test standard is ISO 105-B01;
the clear C-series has a perspiration fastness of more than grade 3, preferably more than grade 4, test standard ISO 105-E04.
Furthermore, the compatibility of the bright color T series and the bright color C series is excellent.
Further, in step (1), the present disclosure does not require the addition of lye and/or acid.
In the traditional one-bath two-step polyester cotton dyeing process, firstly, a polyester part is dyed, acid is added in the dyeing process, after dyeing is finished, the polyester is guaranteed not to be hydrolyzed under the high-temperature condition, and after the polyester part is dyed, dyeing liquid needs to be adjusted. In the dyeing process, the terylene and the cotton fabric are dyed simultaneously, and the dyeing condition of the reactive dye cannot be carried out under the acidic condition, so that alkali liquor and/or acid are not required to be added in the step (1), and the dye bath is weakly alkaline due to the hydrolysis condition of the terylene in the dyeing process.
In some embodiments, the dyeing assistant in step (1) can further comprise a dye stabilizer.
Specifically, the dyeing stabilizer is Ieut SL, Ieubao WDN; the auxiliary agent is provided by Shandong Aiwen biological science and technology limited;
further, the amount of the dye stabilizer is 0 to 2%, preferably 0.1 to 0.5%
Preferably, the amount of the dye stabilizer is controlled according to the dyeing depth, and particularly, when the dyeing depth is a medium-deep color, the amount of the dye stabilizer is 0.1-0.6%;
preferably, when the dyeing depth is 2%, the amount of the dyeing stabilizer is 0.1-0.4%;
preferably, when the dyeing depth is 2-4%, the amount of the dyeing stabilizer is 0.3-0.6%;
preferably, when the dyeing depth is 4%, the amount of the dyeing stabilizer is 0.4-0.6%;
when the dyeing depth is extra dark color, the dosage of the dyeing stabilizer is 0.6-2.0%.
In some embodiments, the amount of the dye stabilizer used in the treatment of polyester-cotton fabrics is also affected by the amount of cotton in the fabric, and the amount of the dye stabilizer is increased when the amount of cotton is increased.
Specifically, the total light stabilizer dosage of the T/C fabric is larger than that of the CVC fabric.
The addition of dyeing stabilizer for carry out more stably with the absorption to the structure of dyestuff, mainly because this disclosed scheme is all dyed under the high temperature condition to two kinds of component fibre of polyester-cotton, and reactive dye is because chemical structure is active, and the structure is destroyed easily under the high temperature condition, and the structure of reactive dye can be stabilized to the dyeing stabilizer under certain degree, and the assurance is dyed the fabric after the dyeing and is developed the colour effect good.
On the other hand, when the dyeing is carried out, the working solution is alkaline, the low molecular by-product in the polyester fiber can be rapidly hydrolyzed, and the hydrolysate is not easy to form oligomer under the action of the stabilizer, so that the fabric is prevented from being stained; and the terylene fabric has certain peeling phenomenon under the alkaline condition, so that the terylene fabric has softer hand feeling.
In some embodiments, step (1) further comprises adding a pretreatment agent.
The pretreatment agent is one or more of Aikeqi series and Ailini series, and is obtained from Shandong Aiwen Biotech limited company.
Further, the Aikeyu series comprises Aikeyu DA and Aikeyu TC; the alicey series includes alicey OZ.
The method uses the pretreatment agent which is added into a dye vat before dyeing and does not need to discharge liquid in the dye vat after pretreatment, the pretreatment agent can be efficient along with the rise of temperature, and impurities and grease in the polyester-cotton fabric can be rapidly treated before the dyeing temperature condition, especially before the dye adsorbs and diffuses the fabric.
Furthermore, the pretreatment agent can be used for pretreating the polyester-cotton fabric at the dyeing temperature.
Preferably, the pretreatment is carried out at a temperature of less than 130 ℃, more preferably at a temperature of less than 100 ℃, and still more preferably at a temperature of less than 80 ℃.
The pretreatment agent is inactivated before the dyeing temperature condition.
Further, the dosage of the pretreatment agent is 0.5-4 g/L; preferably 1-3 g/L;
the pre-treatment agent is uniform DA, the pre-treatment agent can be used for efficiently and quickly pre-treating the polyester-cotton fabric, and can automatically lose activity under a high-temperature condition, so that the pre-treatment does not influence the dyeing process in the process of adsorbing and diffusing the dye to the fiber.
In some embodiments, the temperature for adding the dyeing auxiliary agent is 20-60 ℃, and the material dissolving time is 10-20 min.
In some embodiments, the fabric to be dyed is also added in step (1).
The fabric to be dyed is added after the material is dissolved, and the fabric to be dyed is a polyester-cotton fabric.
The polyester-cotton fabric is a T/C polyester-cotton fabric or a CVC polyester-cotton fabric;
further, the bath ratio of the dyed fabric to the dye bath is 1:5-1: 20; preferably 1:7 to 1: 15; more preferably 1:8 to 1:12, still more preferably 1: 10.
In some embodiments, the dyeing process comprises step (2) heating;
specifically, the dye liquor in the dye vat is heated at the heating rate of 1-2.5 ℃/min.
In the disclosure, since the dye bath includes the disperse dye and the reactive dye, and also includes the pretreatment, the pretreatment agent is ensured to treat the polyester-cotton fabric, if the temperature rise speed is too fast, the pretreatment agent is not fast to treat, the dyeing effect is affected, and if the temperature rise speed is too slow, the dyeing efficiency is affected, and the adsorption of the dye to the fiber is also affected, the dyeing effect is better under the condition that the temperature rise speed is 1-2.5 ℃/min.
In some embodiments, the process further comprises the step (3) dyeing;
furthermore, the temperature is raised to 125-135 ℃, the temperature is kept for dyeing for 25-50min, the dye is used for dyeing the fabric, and then the fabric is flushed by overflow.
And in the process of heating to the temperature of 125-135 ℃, the dye is dyed and migrated to the cotton fiber and the polyester fiber.
In some embodiments, the temperature can be raised to 50-80 ℃ and the temperature can be kept at 20-30 ℃ before the temperature is raised to 125-135 ℃;
the temperature is raised to 50-80 ℃, and the cotton fiber is mainly dyed.
According to the method, in the step (3), under the condition of heat preservation for 20-50min, the dye can be fully absorbed and diffused to the fabric, and good dye uptake is ensured.
After dyeing is finished, overflow washing is carried out on the fabric, and the overflow washing can wash away the floating color on the fabric, thereby being beneficial to the subsequent soaping effect.
Further, the temperature after the overflow washing is reduced to 30 to 60 ℃.
In some embodiments, the dyeing process further comprises step (4) soaping;
specifically, after the overflow washing is completed, a soaping agent is added into the dye vat for soaping.
The soaping agent is used for soaping the cotton fiber dyed by the reactive dye, color matching is carried out, due to the dye hydrolysis problem of the reactive dye, the color fixation on the cotton fiber is required under the alkaline condition generally, the dyeing of the soaping agent is carried out under the high-temperature condition, the polyester hydrolysis problem is considered, the reactive dye with multiple reactive groups is selected instead of alkali liquor in the dyeing process, the dye can have better dyeing property under the neutral condition, but under the high-temperature condition, especially under the dyeing condition of about 130 ℃, the molecular activity of a dyeing medium (water) is active, the reactive dye can be hydrolyzed to a certain degree, the hydrolyzed dye cannot be chemically reacted with the cotton to be fixed with the cotton fiber, and the problem of poor color fastness is caused.
Although the present disclosure has found such a problem in dyeing, the addition of a dye stabilizer prior to dyeing is effective in reducing hydrolysis of the reactive dye under certain conditions, but hydrolysis of the reactive dye is not completely prevented.
In order to improve the dyeing effect, after the dyeing process is finished, a soaping agent is still added after overflow cleaning, and further, the cotton fibers are soaped and toned (fixed), loose colors on the fibers are washed away, and the fixation effect of the dye is improved, so that better dyeing uniformity and color fastness are achieved.
Preferably, the soaping agent used in step (4) of the present disclosure is provided by Shandong Erwinia Biotechnology Co.
More specifically, the soaping agent is Aikejie JX-G or Aiyoubao RCN.
In some embodiments, the soaping agent is present in an amount of 1 to 5g/L, preferably 2 to 4 g/L.
In some embodiments, the dyeing process further comprises the step of heating up, soaping, color mixing and fixing the temperature of the dye vat after adding the soaping agent in the step (4), wherein the heating up rate is 1-3.5 ℃; heating to 80-98 deg.C, and soaping for 10-30 min.
In some embodiments, the dyeing process further comprises that the soaping of step (4) may comprise a plurality of separate soaping steps, and in particular may comprise two soaping steps.
In some embodiments, the dyeing process further comprises the step (5) of post-treatment, and after soaping is completed, the dye liquor is discharged and post-treatment is carried out.
The post-treatment comprises functional finishing such as softening, antibiosis and the like.
In some embodiments, the dyeing process of the present disclosure has significantly reduced costs, particularly energy and time and adjunct costs, as compared to conventional processes.
Specifically, the dyeing time is about 5-7 h;
energy consumption is saved by more than 30%;
the cost of the dyeing auxiliary agent is saved by more than 20 percent.
The dyeing method has the beneficial effects that the dyeing method adopts a one-bath one-step dyeing method, especially adopts the dyeing condition to dye the polyester-cotton fabric, so that the reactive dye and the disperse dye can simultaneously dye the polyester-cotton fabric, the dyeing time is obviously reduced, compared with the traditional polyester-cotton dyeing, the dyeing time is obviously shortened, the whole process dyeing time is about 6 hours, and compared with the traditional 12 hours, the whole process dyeing time is shortened by about 6 hours.
The method has the advantages that the method is simple in process, convenient to operate, high in efficiency, convenient to wash and free of influence on color fastness and pure in color light. Has excellent color fastness to washing water, light fastness, rubbing color fastness, water bubble fastness and perspiration stain fastness.
The one-bath one-step polyester dyeing method has the advantages that the pretreatment agent is added at the beginning of the dyeing vat, the pretreatment of the polyester-cotton fabric can be completed before the polyester-cotton fabric is dyed, and meanwhile, the pretreatment agent cannot influence the dyeing effect under the dyeing condition, so that the pretreatment time of the polyester-cotton fabric is efficiently shortened due to the addition of the pretreatment agent.
In addition, the one-bath one-step polyester dyeing method disclosed by the invention has the beneficial effects that after dyeing is finished, soaping treatment is carried out on dyed fabrics, and the soaping can be carried out for one-time soaping or multiple soaping treatments.
In addition, the overall dyeing process disclosed by the invention has the beneficial effects that the dyeing time can be shortened by about 6 hours, the energy consumption can be reduced by more than 30%, and the dyeing cost can be saved by more than 20%.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the experiments performed in the embodiments will be described below and shown in the drawings, and those skilled in the art can also obtain other drawings according to the drawings.
FIG. 1: the polyester cotton one-bath one-step dyeing process of one embodiment of the disclosure;
FIG. 2: a polyester-cotton one-bath one-step dyeing process of another embodiment of the disclosure;
FIG. 3: a polyester-cotton one-bath one-step dyeing process of yet another embodiment of the present disclosure;
FIG. 4: the bright color series has a monochromatic dyeing effect;
FIG. 5: compatibility staining patterns of the bright colors T and the bright colors C in light colors, medium colors and deep colors;
FIG. 6: performance test graphs of the fabric dyed by compatibility of light color T and light color C in light color, medium color and dark color;
FIG. 7: a traditional one-bath two-step dyeing process diagram;
FIG. 8: the cost calculation chart of the one-bath one-step dyeing process of the polyester cotton is disclosed;
Detailed Description
In order to make the technical solutions of the present disclosure better understood by those skilled in the art, the present disclosure will be described in further detail below with reference to the accompanying drawings.
The disclosure begins with a description of the nouns or reagents used in the disclosure,
the disclosed process is a brand-new process, and changes the original one-bath two-step method polyester-cotton dyeing process.
The dye, the pretreatment agent and the soaping agent used in the method are all provided by Shandong Aiwen biological technology limited company;
the dyes used in this disclosure are the bright color T series and the bright color C series.
The pretreatment agent used in the method is Aikeqi series or Ailini series;
wherein the Aikeyu series comprises Aikeyu DA and Aikeyu TC; the alicey series includes alicey OZ.
The dyeing stabilizer used in the present disclosure is provided by Shandong Arviny Biotech Co., Ltd; ,
wherein the dyeing stabilizer comprises Iupote SL and Iupote WDN.
The soaping agent used in the present disclosure is provided by Shandong Argentine Biotechnology Co., Ltd;
wherein the soaping agent comprises Ikejie JX-G or Ikebao RCN.
The reagents used in the present disclosure are all commercially available products, and those skilled in the art can contact the above manufacturers and purchase them, and therefore, the use of the product names in the present disclosure is clear.
In some embodiments, the present disclosure relates to a one-bath one-step dyeing process for polyester-cotton fabric, specifically referring to fig. 1, comprising the following steps:
(1) dye blending
Firstly, adding a dyeing material comprising 100-120g/L anhydrous sodium sulphate, 0-2.0% of dyeing stabilizer Artemisia SL and 1-2g/L of pretreatment agent Artemisia DA at 40 ℃, and adding bright-color series dyes.
The dye can be adjusted according to the required color, and the dye is obtained by dyeing according to the method disclosed by the embodiment of the disclosure in the subsequent dyeing of the dye, particularly in a compatible dyeing process.
And (3) melting the dye at 40 ℃ for 20min, and adding the polyester-cotton fabric after the melting is finished, wherein the bath ratio of the polyester-cotton fabric is 1:7-1: 20.
Step (2), then heating up, wherein the heating up rate is 1 ℃/min;
and (3) dyeing, heating to 130 ℃, dyeing for 30min, cooling after dyeing is finished, and overflowing and washing.
Step (4), soaping
After overflow washing, adding a soaping agent, wherein the soaping agent is the moxa RCN, the using amount is 2-4%, then heating to 95 ℃, and soaping, toning and fixing for 20min.
And (5) post-treatment, namely discharging the dye liquor after soaping is finished, and performing post-treatment.
The post-treatment is water washing and softening treatment.
In some embodiments, according to the previous embodiment, the pretreatment in the above embodiments may be replaced by alicey OZ, eichhir TC.
In some embodiments, the soaping agent in the above embodiments may be replaced by the Aikojie JX-G according to the above embodiment.
In some embodiments, according to the previous embodiment, the dye stabilizer in the embodiments of the present disclosure may be replaced with aiubao WDN.
In some embodiments, according to the previous embodiment, the present disclosure may perform two soaping processes, and a specific dyeing process may be shown in fig. 2, wherein the dyeing process takes 360min, i.e., 6 hours.
Wherein the process flow of figure 2 is sufficient for one skilled in the art to understand the specific operations in light of the foregoing examples.
In some embodiments, referring specifically to the process flow of fig. 3, it may be sufficient for one skilled in the art to understand the specific operations based on the foregoing embodiments.
In some embodiments, the present disclosure also performs a single dyeing experiment on both the bright T and bright C series of dyes, with the dyeing effect shown in figure 4, wherein the bath ratio is 1:10, and the dyed fabric is subjected to a dyeing performance test comprising a soaping fastness of said bright series of single-color dyeings of more than 4-5 grades, with the test standard ISO 105-C03;
the bright color series has a crockfastness test standard of ISO 105-X12;
the light fastness test standard of the bright color series is ISO 105-B01;
the test condition of sublimation fastness of the bright color series is 180 ℃ and 30 s.
The bright color series has a crockfastness test standard of ISO 105-X12;
the light fastness test standard of the bright color series is ISO 105-B01;
standard ISO 105-E04 for the test of fastness to perspiration in the bright series.
The soaping fastness of the bright T-series monochromatic dyeing is more than 4-5 grades, the rubbing fastness is more than 3-4 grades, the light fastness is more than 5 grades, the sublimation fastness is more than 3 grades, and the preferred fastness is more than 4 grades.
The soaping fastness of the bright C series monochromatic dyeing is more than 4-5 grades, the rubbing fastness is more than 3-4 grades, the light fastness is more than 5 grades, the perspiration fastness is more than 3 grades, and the preferential fastness is more than 4 grades.
From the color effect of the two dyes after dyeing, the colors of the bright color C and the bright color T series dyes after dyeing the fabric are very close, and the compatibility of the bright color C and the bright color T series dyes is excellent, so that the polyester-cotton fabric with uniform color can be dyed by mixing.
In some embodiments, the present disclosure uses two dyes in combination and further dyes fabrics in dark, medium and light colors, the dyed fabric is 65/35T/C polyester fabric, the bath ratio is 1:10, and the dyeing temperature is 130 ℃.
The light color formulation of one of the examples was 0.1% for each of Bright Kersin T-HF/Bright Kersin Red T-HR/Bright Kersin blue T-HB; 0.1% of each of bright color yellow C-AY, bright color red C-AR and bright color blue C-AB.
The medium color formulation of one of the examples is 0.3% each of Bright Kelvin T-HF/Bright Kelvin T-HR/Bright Kelvin T-HB; 0.3 percent of bright color element yellow C-AY, bright color element red C-AR and bright color element blue C-AB respectively.
One example of a dark formulation is 0.7% each of Bright color Kesi orange T-E/Bright color Kesi red jade T-2R/Bright color Kesi navy blue T-NF; 0.7 percent of bright color orange C-E, bright color red jade C-2R, bright color dark blue C-NF.
From the color effect of the two dyes after dyeing, the colors of the bright color C and the bright color T series dyes after dyeing the fabric are very close, and the compatibility of the bright color C and the bright color T series dyes is excellent, so that the polyester-cotton fabric with uniform color can be dyed by mixing.
The results of the staining are shown in FIG. 5 (compatibility).
It is clear that the dyeing uniformity is excellent for the dyeing of light color, medium color and deep color, and the dyeing effect is very excellent particularly for the dyeing of deep color.
In some embodiments, the present disclosure further performs a color fastness test on the light color, heavy color and dark color fabrics obtained in the previous embodiment, and the specific test result is shown in fig. 6;
wherein, the soaping fastness is 4-5 grade, the rubbing fastness is 4 grade, the light fastness is 6 grade, the acid perspiration fastness is 4-5 grade, the alkaline perspiration fastness is 4-5 grade, and the sublimation fastness is 4 grade.
It can be seen that the compatibility of the dyes used in the present disclosure is excellent.
In some embodiments, referring to fig. 7 for conventional polyester cotton dyeing, the specific operation is to first perform a pretreatment on the fabric, including a degreasing (pretreatment) step, add a pretreatment agent, mainly an alkaline or surfactant, and then perform a temperature rise to 98 ℃, and perform a temperature preservation for 15min to remove grease and impurities on the fabric.
After the pretreatment is finished, cooling and washing, discharging liquid, then adding disperse dye, heating to 130 ℃, dyeing for about 30 minutes, dyeing the terylene, and after the dyeing is finished, carrying out washing, acid washing and other processes.
After dyeing the polyester component, adding reactive dye and other assistants, wherein the assistants comprise anhydrous sodium sulphate and soda ash, dyeing cotton fibers in the polyester-cotton fabric, heating to 60-90 ℃, and after dyeing, performing processes such as washing, soaping and the like.
In one embodiment, comparing one embodiment of the present disclosure, see the embodiment of fig. 1, with another embodiment of the present disclosure, see the embodiment of fig. 7, results in the cost of two embodiments, see fig. 8 in particular.
As can be seen from the calculation of FIG. 8, in the dyeing process of each cylinder, compared with the conventional process, the time of the present disclosure is saved by 5-6 hours, the energy consumption can be reduced by 100-.
While certain exemplary embodiments of the present disclosure have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present disclosure. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the disclosure.
Claims (10)
1. A one-bath one-step dyeing method for polyester-cotton fabric is characterized by comprising the following operations,
step (1) dye blending,
adding dyes including anhydrous sodium sulphate, dyeing stabilizer, pretreatment agent and dye;
heating up in the step (2), wherein the heating up rate is 0.5-3.5 ℃/min;
dyeing, namely heating to the temperature of 120-135 ℃, dyeing for 15-50min, cooling after dyeing is finished, and overflowing and washing;
and (4) soaping.
2. The one-bath one-step dyeing method of the polyester-cotton fabric as claimed in claim 1, characterized in that in the step (1), the dye is dissolved at 40-60 ℃ for 5-20min, and after the material is dissolved, the polyester-cotton fabric is added, wherein the bath ratio of the polyester-cotton fabric is 1:7-1: 20.
3. The one-bath one-step dyeing method for polyester-cotton fabric according to claim 1, characterized in that anhydrous sodium sulphate is used in step (1); the dyeing depth is less than 0.2 percent, and the using amount of anhydrous sodium sulphate is 70-90 g/L;
or, the dyeing depth is 0.2-0.5%, and the using amount of anhydrous sodium sulphate is 90-105 g/L;
or, the dyeing depth is 0.5-1%, and the using amount of anhydrous sodium sulphate is 105-120 g/L;
or, the dyeing depth is more than 1 percent, and the using amount of anhydrous sodium sulphate is 120-130 g/L;
wherein the amount of anhydrous sodium sulphate is 70-130 g/L.
4. The one-bath one-step dyeing method of polyester-cotton fabric according to claim 1, characterized in that the dye in step (1) is obtained by compounding a disperse dye and a reactive dye; the dye is bright color series dye;
the bright color series dyes comprise bright color T series and bright color C series;
wherein, the bright color T series is disperse dye, and the bright color C series is reactive dye.
5. The one-bath one-step dyeing method for polyester-cotton fabric according to claim 1, characterized in that step (1) comprises a stabilizer;
the dyeing depth is less than 2 percent, and the dosage of the dyeing stabilizer is 0.1 to 0.4 percent;
or, the dyeing depth is 2-4%, and the dosage of the dyeing stabilizer is 0.3-0.6%;
or, the dyeing depth is more than 4 percent, and the dosage of the dyeing stabilizer is 0.4 to 0.6 percent;
or when the dyeing depth is more than 6 percent, the using amount of the dyeing stabilizer is 0.6 to 2.0 percent;
the stabilizer is Iupote SL and/or Iupote WDN;
the dosage of the dyeing stabilizer is 0-2%.
6. The one-bath one-step dyeing method of polyester-cotton fabric according to claim 1, characterized in that the pretreatment agent in step (1) is one or more of Ikeyu series and Iymi series;
the Aikeyu series comprises Aikeyu DA and Aikeyu TC;
the alicey series includes alicey OZ;
the dosage of the pretreatment agent is 0.5-4 g/L.
7. The one-bath one-step dyeing method for polyester-cotton fabric according to claim 1, characterized in that the temperature in the step (2) is increased; the rate of temperature rise is 1-2.5 ℃/min.
8. The one-bath one-step dyeing method for polyester-cotton fabric as claimed in claim 1, wherein the dyeing in step (3) is carried out, the temperature is raised to 125-135 ℃, the temperature is kept for dyeing for 25-50min, and then the overflow washing is carried out.
9. The one-bath one-step dyeing method of polyester-cotton fabric according to claim 1, characterized in that a soaping agent is added in the fixation of the step (4), wherein the soaping agent is Aikojie JX-G or Aiubao RCN;
the dosage of the soaping agent is 1-5 g/L;
after adding the soaping agent, heating the temperature of the dye vat for soaping, wherein the heating rate is 1-3.5 ℃; heating to 80-98 deg.C, and fixing for 10-30 min.
10. The one-bath one-step dyeing method for polyester-cotton fabric according to claim 1, characterized in that, after the step (5), the dye liquor is discharged and the post-treatment is carried out after the soaping is finished;
the post-treatment comprises softening, antibacterial and hydrophobic finishing.
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