CN117702469A - Dyeing and mildew-removing process for full-polyester fabric by using disperse dye - Google Patents
Dyeing and mildew-removing process for full-polyester fabric by using disperse dye Download PDFInfo
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- CN117702469A CN117702469A CN202311403343.8A CN202311403343A CN117702469A CN 117702469 A CN117702469 A CN 117702469A CN 202311403343 A CN202311403343 A CN 202311403343A CN 117702469 A CN117702469 A CN 117702469A
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- 239000004744 fabric Substances 0.000 title claims abstract description 78
- 238000004043 dyeing Methods 0.000 title claims abstract description 72
- 229920000728 polyester Polymers 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000000986 disperse dye Substances 0.000 title claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 51
- 239000003513 alkali Substances 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 238000004140 cleaning Methods 0.000 claims abstract description 26
- 230000002087 whitening effect Effects 0.000 claims abstract description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 72
- 239000000975 dye Substances 0.000 claims description 37
- 238000010438 heat treatment Methods 0.000 claims description 37
- 238000001816 cooling Methods 0.000 claims description 36
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 15
- 230000002378 acidificating effect Effects 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 239000012752 auxiliary agent Substances 0.000 claims description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 238000010979 pH adjustment Methods 0.000 claims 2
- 238000005406 washing Methods 0.000 abstract description 30
- 239000007844 bleaching agent Substances 0.000 abstract description 2
- 238000003421 catalytic decomposition reaction Methods 0.000 abstract description 2
- 238000006555 catalytic reaction Methods 0.000 abstract description 2
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000003303 reheating Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 description 16
- 238000006243 chemical reaction Methods 0.000 description 11
- VGKYEIFFSOPYEW-UHFFFAOYSA-N 2-methyl-4-[(4-phenyldiazenylphenyl)diazenyl]phenol Chemical compound Cc1cc(ccc1O)N=Nc1ccc(cc1)N=Nc1ccccc1 VGKYEIFFSOPYEW-UHFFFAOYSA-N 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 10
- 239000003153 chemical reaction reagent Substances 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 229920004933 Terylene® Polymers 0.000 description 4
- 238000009940 knitting Methods 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- MHXFWEJMQVIWDH-UHFFFAOYSA-N 1-amino-4-hydroxy-2-phenoxyanthracene-9,10-dione Chemical compound C1=C(O)C=2C(=O)C3=CC=CC=C3C(=O)C=2C(N)=C1OC1=CC=CC=C1 MHXFWEJMQVIWDH-UHFFFAOYSA-N 0.000 description 3
- 238000004061 bleaching Methods 0.000 description 3
- 238000005202 decontamination Methods 0.000 description 3
- QRKGKRSGMAWUMO-UHFFFAOYSA-N n-[2-[(2-bromo-4,6-dinitrophenyl)diazenyl]-5-(diethylamino)-4-methoxyphenyl]acetamide Chemical compound C1=C(OC)C(N(CC)CC)=CC(NC(C)=O)=C1N=NC1=C(Br)C=C([N+]([O-])=O)C=C1[N+]([O-])=O QRKGKRSGMAWUMO-UHFFFAOYSA-N 0.000 description 3
- 238000010186 staining Methods 0.000 description 3
- 238000012512 characterization method Methods 0.000 description 2
- 230000003588 decontaminative effect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- NAXWWTPJXAIEJE-UHFFFAOYSA-N chembl1398678 Chemical compound C1=CC=CC2=C(O)C(N=NC3=CC=C(C=C3)C3=NC4=CC=C(C(=C4S3)S(O)(=O)=O)C)=CC(S(O)(=O)=O)=C21 NAXWWTPJXAIEJE-UHFFFAOYSA-N 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with hydrogen peroxide or peroxides of metals; with persulfuric, permanganic, pernitric, percarbonic acids or their salts
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
-
- 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
- D06P1/0032—Determining dye recipes and dyeing parameters; Colour matching or monitoring
-
- 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
-
- 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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Coloring (AREA)
Abstract
The invention discloses a dyeing, mildew-removing and reduction cleaning process of a disperse dye for a full-polyester fabric, which adopts a low-alkali whitening agent TF-1291K to realize low-temperature mildew removal, omits the mildew-removing step before dyeing, and directly completes high-quality dyeing and high-efficiency mildew-removing through one bath two steps. Tests prove that the low-alkali whitening agent TF-1291K can maintain excellent catalysis H at the low temperature of 80-90 DEG C 2 O 2 Decomposition effect, catalytic decomposition of HO 2 ‑ The mildew-resistant color development system is destroyed under the condition that the pH value is more than or equal to 10, so that the mildew on the full-polyester fabric is effectively removed. In one aspect, the temperature is 80-90 DEG CThe washing treatment of (2) belongs to the low-temperature treatment in the field, and does not affect the chromatic light, so that the dyed fabric obtains stable chromatic light and excellent washing fastness. On the other hand, the application directly adds the low-alkali whitening agents TF-1291K and H into the original dyeing system 2 O 2 The problems of liquid discharge pollution caused by bath replacement and energy consumption caused by reheating after bath replacement in the prior art are avoided.
Description
Technical Field
The invention belongs to the dyeing and finishing field of textile fabrics, and particularly discloses a dyeing and mildew-removing one-bath two-step process for full-polyester fabrics.
Background
The mildew and the textile have stronger intermolecular binding force, the conventional high-temperature alkaline oxygen bath can seriously damage disperse dye, damage dye chromophores, and the low-temperature alkaline oxygen bath cannot effectively remove the mildew. Therefore, in the prior art, the mildew on the full-washed fabric is usually removed by an alkali-oxygen bath, after the neutralization of oxygen removal by water washing, the fiber is dyed on an acid bath, and finally the fiber is reduced and washed.
Disclosure of Invention
The invention aims to provide a dyeing, mildew-removing and reduction cleaning process for a full-polyester fabric disperse dye, which adopts a low-alkali whitening agent TF-1291K to realize low-temperature mildew removal, omits the mildew removal step before dyeing, and directly completes high-quality dyeing and high-efficiency mildew removal through one bath two steps. Tests prove that the low-alkali whitening agent TF-1291K can maintain excellent catalysis H at the low temperature of 80-90 DEG C 2 O 2 Decomposition effect, catalytic decomposition of HO 2 - The mildew-resistant color development system is destroyed under the condition that the pH value is more than or equal to 10, so that the mildew on the full-polyester fabric is effectively removed.
Specifically, the application adopts the following technical scheme: dyeing the full polyester mildew-resistant fabric in a high-temperature acidic bath, cooling to 80-90 ℃, adding a low-alkali whitening agent TF-1291K, and adding sodium hydroxide and H 2 O 2 Adjusting pH to be more than or equal to 10, preserving heat at 80-90 ℃ for 30-40 min, cooling and draining, and cleaning the fabric with clear water to remove residual dye and auxiliary agents (low-alkali whitening agent TF-1291K, sodium hydroxide and H) on the fabric 2 O 2 Etc.), to obtain dyed decontaminated full-polyester fabric; on the one hand, the washing treatment at 80-90 ℃ belongs to the low-temperature treatment in the field, and does not affect the chromatic light, so that the dyed fabric obtains stable chromatic light and excellent washing fastness. On the other hand, the application directly adds the low-alkali whitening agents TF-1291K and H into the original dyeing system 2 O 2 The problems of liquid discharge pollution caused by bath replacement and energy consumption caused by reheating after bath replacement in the prior art are avoided.
Typically, sodium hydroxide, potassium hydroxide, liquid alkali, sodium carbonate, sodium bicarbonate are used to adjust the pH.
Generally, during dyeing, the bath ratio of the full-polyester fabric is 5: 1-30: 1, in the present application, the low-alkali whitening agent TF-1291KThe concentration is set to be 0.5 g/L-2 g/L, H 2 O 2 The concentration is 0.9 g/L-6 g/L, and the concentration of sodium hydroxide is 1-3 g/L, so that the high-efficiency enzyme-removing dirt can be realized with the fabric under the bath ratio.
Further, TF-106T was added at a concentration of 0.5g/L to 3.0g/L, also before the pH was adjusted.
Further, after the high-temperature dyeing is finished, the temperature is reduced to 80-90 ℃ within 20min, and a low-alkali whitening agent TF-1291K is immediately added.
The high temperature dyeing steps described herein include, but are not limited to: and (3) adding a leveling agent TF-213HL into the dye liquor, wherein the concentration of the leveling agent TF-213HL is 0.5-2 g/L, and carrying out dyeing reaction on the full polyester fabric under the high temperature condition and the pH value of 4-5.
The high temperature dyeing process may be: heating at a rate of 0.5-4deg.C/min, maintaining at 70-100deg.C for 5-15 min, and then heating to 125-135 deg.C for 30-60 min.
As in the different examples, the disperse dye is used in an amount of 0.1%, 0.5%, 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10% by weight of the total polyester fabric, and so on, depending on the shade of the desired color.
Further, the high temperature dyeing of the invention is to raise the temperature to 125-135 ℃ in the water bath environment, so that the sealing is generally easy to form pressure, and the temperature can reach 125-135 ℃.
As in the various embodiments, the rate of temperature increase may be 0.5 ℃/minute, 1 ℃/minute, 1.5 ℃/minute, 2 ℃/minute, 2.5 ℃/minute, 3 ℃/minute, 4 ℃/minute, and so forth; further, the temperature is raised to 70-100 ℃ and kept for 5-15 minutes, which can be 70 ℃ and kept for 15 minutes, 80 ℃ and kept for 10 minutes, 85 ℃ and kept for 10 minutes, 90 ℃ and kept for 10 minutes, 100 ℃ and kept for 5 minutes, etc.; further heating to 125-135 deg.C for 30-40 min, which can be 125 deg.C for 40 min, 130 deg.C for 35 min, 130 deg.C for 30min, 135 deg.C for 30min, etc.
Further, the adjustment of the pH of the solution to 4-5 is performed with an acidic substance. The acidic substance is acetic acid or citric acid.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts TF-1291K to realize low temperature mildew removal, omits the mildew removal step before dyeing, directly completes high-quality dyeing and high-efficiency mildew removal by one bath two steps, and ensures that the dyed fabric obtains stable chromatic light and excellent washing fastness on the premise of energy conservation and emission reduction.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention.
The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention. The low-alkali whitening agent adopted in the examples is purchased from the transmission intelligent ply company limited company, and the brand is TF-1291K; leveling agents were purchased from Chinesemedicinal Congress Inc. under the trademark TF-213HL.
In the following examples, the fabric mold removal grade was evaluated according to ISO 105/A03-1993 (gray sample card for evaluating staining in textile color fastness test, grade 5 is the best, grade 1 is the worst, and the average value is taken as a visual result of three persons, and the washing fastness is measured by referring to AATCC test method 61-2010 "washing fastness of textile", wherein the color characteristic values L, a, b, K/S of dyed polyester knitted fabrics are relevant parameters used for representing the color of fabrics in CIE1976L, a, b, in the color system, wherein L represents lightness, C represents saturation, a represents reddish green, positive value is reddish blue, negative value is greenish, positive value is yellow blue, negative value is blue, K/S represents dyeing depth, and the greater the K/S value is, the darker the dyeing degree is.
In the present invention, the solvent of the solution is not particularly specified, and the solvent is water.
Example 1
This example provides a dyeing (disperse yellow E-3G) desmutting one-bath two-step process for a full polyester knit fabric, the steps being as follows:
(1) The full polyester mildew-resistant fabric is dyed in a high-temperature acidic bath: the dye (disperse yellow E-3G) is used in an amount of 0.1% of the fabric weight, and the leveling agent is 2G/L (TF-213 HL, transmission Intelligence Co., ltd.); the weight ratio of the dye liquor to the fabric is 10:1 preparing dye liquor, regulating the pH to 5 by adopting acetic acid, heating to 70 ℃ on a high-temperature high-pressure dyeing machine according to the speed of 0.5 ℃/min, and preserving heat for 15min; heating to 130 ℃ at a heating rate of 2 ℃/min, and preserving heat for 30min; after the dyeing is finished, the temperature is reduced to 90 ℃ at the cooling rate of 4 ℃/min, and no liquid is discharged.
(2) Low temperature mildew removal stage of the full polyester fabric: adding a low-alkali whitening agent into a dye vat until the concentration in the vat is 2g/L (TF-1291K, transmission intelligent combination Co., ltd.); adding sodium hydroxide to the concentration of 1g/L in the tank; adding H 2 O 2 Until the concentration in the cylinder is 2.75g/L; adding deoiling agent to 3g/L (deoiling agent TF-106T, transferred intelligent combination Co., ltd.); adjusting the pH to 10 by using sodium hydroxide, keeping the weight ratio of the reaction bath solution to the polyester fabric at 15:1, and keeping the temperature at 90 ℃ for 30min;
cooling to 50 ℃ at a speed of 4 ℃/min, and discharging residual liquid; and (5) fully washing with clear water.
The conventional disperse yellow E-3G dyeing decontamination process is as follows:
(1) Alkali treatment: 2g/L sodium hydroxide is injected into the jar; adding H 2 O 2 Until the concentration in the cylinder is 2.75g/L; adding deoiling agent to 1g/L (deoiling agent TF-106T, transferred intelligent combination Co., ltd.) in cylinder; the weight ratio of the reaction bath solution to the polyester fabric is 10:1, the temperature is increased to 98 ℃ at 2 ℃/min, and the temperature is kept for 30min; cooling to 50 ℃ at a speed of 4 ℃/min, and discharging residual liquid; and (5) fully washing with clear water.
(2) Dyeing: the dye disperse yellow E-3G dosage is 0.1% of the fabric weight, and the leveling agent is 1G/L (TF
213HL, biographic intelligent share limited); the weight ratio of the dye liquor to the fabric is 10:1 preparing dye liquor, heating to 100 ℃ at a speed of 2 ℃ per minute on a high-temperature high-pressure dyeing machine, and preserving heat for 15 minutes; heating to 130 ℃ at a heating rate of 2 ℃/min, and preserving heat for 30min; and after the dyeing is finished, cooling to 50 ℃ at a cooling rate of 4 ℃/min, and draining.
(3) Reducing and cleaning, namely injecting reducing and cleaning liquid into a dye vat, wherein the reducing and cleaning liquid contains 3g/L sodium hydrosulfite and 2g/L sodium hydroxide, heating to 90 ℃ at a heating rate of 3 ℃/min, and reducing and cleaning for 20min; cooling to 50 ℃ at a speed of 4 ℃/min, and discharging residual liquid; and (5) fully washing with clear water.
TABLE 1-1 mildew-removal rating of disperse yellow E-3G dyed full-polyester knitted fabrics
| Classification | Process flow | Mildew removal grade |
| The invention is that | Dyeing and mildew-removing one-bath two-step | Grade 5 |
| Conventional process | Alkali treatment, dyeing and reduction cleaning | Grade 5 |
TABLE 1-2 color eigenvalues of disperse yellow E-3G dyed full-polyester knitted fabrics
| Classification | L* | a* | b* | K/S |
| The invention is that | 83.16 | -0.57 | 85.85 | 9.832 |
| Conventional process | 83.08 | -0.87 | 86.48 | 10.276 |
Tables 1-3 fastness to washing of the dispersed yellow E-3G dyed full-polyester knitted fabrics
As can be seen from tables 1-1, 1-2 and 1-3, the bleaching and dyeing one-bath two-step process has good mildew-removal grade for terylene knitting, has close dyeing characteristic value and obviously better washing fastness than the conventional process, reduces the alkali and oxygen resistance requirement for disperse dyes, simplifies the process, saves reagents, prevents pollution caused by the reagents, and is more environment-friendly.
Example 2
This example provides a dyeing (disperse yellow E-3G) desmutting one-bath two-step process for a full polyester knit fabric, the steps being as follows:
(1) The full polyester mildew-resistant fabric is dyed in a high-temperature acidic bath: the dye (disperse yellow E-3G) is 10% of the fabric weight, and the leveling agent is 1G/L (TF-213 HL, transmission Zhi Lian Co., ltd.); the weight ratio of the dye liquor to the fabric is 10:1 preparing dye liquor, regulating the pH to 4 by adopting acetic acid, heating to 100 ℃ on a high-temperature high-pressure dyeing machine according to the speed of 4 ℃/min, and preserving the temperature for 5min; heating to 135 ℃ at a heating rate of 4 ℃/min, and preserving heat for 30min; after the dyeing is finished, the temperature is reduced to 85 ℃ at a cooling rate of 4 ℃/min, and no liquid is discharged.
(2) Low temperature mildew removal stage of the full polyester fabric: adding a low-alkali whitening agent into a dye vat until the concentration in the vat is 1g/L (TF-1291K, transmission intelligent combination Co., ltd.); adding sodium hydroxide to the concentration of 2g/L in the tank; adding H 2 O 2 Until the concentration in the cylinder is 0.6g/L; adding deoiling agent to 1g/L (deoiling agent TF-106T, transferred intelligent combination Co., ltd.) in cylinder; adjusting the pH value to 11 by potassium hydroxide, keeping the weight ratio of the reaction bath solution to the polyester fabric at 30:1, and keeping the temperature at 85 ℃ for 30min; cooling to 50 ℃ at a speed of 4 ℃/min, and discharging residual liquid; and (5) fully washing with clear water.
The conventional process is as follows:
(1) Alkali treatment: 2g/L sodium hydroxide is injected into the jar; adding H 2 O 2 The concentration in the cylinder is 2.75g/L; adding deoiling agent to a concentration of 2g/L (deoiling agent TF-106T, transferred intelligent combination Co., ltd.); the weight ratio of the reaction bath solution to the polyester fabric is 10:1, the temperature is increased to 98 ℃ at 2 ℃/min, and the temperature is kept for 30min; cooling to 50 ℃ at a speed of 4 ℃/min, and discharging residual liquid; and (5) fully washing with clear water.
(2) Dyeing: the dye (disperse yellow E-3G) is 10% of the fabric weight, and the leveling agent is 1G/L (TF-213 HL, transmission Zhi Lian Co., ltd.); the weight ratio of the dye liquor to the fabric is 10:1 preparing dye liquor, heating to 100 ℃ at a speed of 2 ℃ per minute on a high-temperature high-pressure dyeing machine, and preserving heat for 15 minutes; heating to 130 ℃ at a heating rate of 2 ℃/min, and preserving heat for 30min; and after the dyeing is finished, cooling to 50 ℃ at a cooling rate of 4 ℃/min, and draining.
(3) Reducing and cleaning, namely injecting reducing and cleaning liquid into a dye vat, wherein the reducing and cleaning liquid contains 3g/L sodium hydrosulfite and 2g/L sodium hydroxide, heating to 90 ℃ at a heating rate of 3 ℃/min, and reducing and cleaning for 20min; cooling to 50 ℃ at a speed of 4 ℃/min, and discharging residual liquid; and (5) fully washing with clear water.
TABLE 2-1 mildew-free rating of disperse yellow E-3G dyed full-polyester knitted fabrics
TABLE 2-2 color characterization values for dispersed yellow E-3G dyed full-polyester knitted fabrics
| Classification | L* | a* | b* | K/S |
| The invention is that | 82.16 | 2.32 | 92.66 | 15.115 |
| Conventional process | 82.18 | 2.36 | 92.86 | 15.583 |
Tables 2-3 washing fastness of dispersed yellow E-3G dyed full-polyester knitted fabrics
As can be seen from tables 2-1, 2-2 and 2-3, the bleaching and dyeing one-bath two-step process has better mildew-removal grade for terylene knitting, has close dyeing characteristic value and obviously better washing fastness than the conventional process, reduces the alkali and oxygen resistance requirement for disperse dyes, simplifies the process, saves reagents, prevents pollution caused by the reagents, and is more environment-friendly.
Example 3
This example provides a dyeing (disperse red FB) desmutting one-bath two-step process for a full polyester knit fabric, the steps being as follows:
(1) High-temperature acid bath dyeing stage of full-polyester stained fabric: the dye (disperse red FB) is 0.5 percent of the weight of the fabric, and the leveling agent is 0.5g/L (TF-213 HL, transmission intelligent company, inc.); the weight ratio of the dye liquor to the fabric is 10:1 preparing dye liquor, regulating the pH to 5 by adopting acetic acid, heating to 100 ℃ on a high-temperature high-pressure dyeing machine at a speed of 1 ℃/min, and preserving heat for 15min; heating to 125 ℃ at a heating rate of 1 ℃/min, and preserving heat for 60min; after the dyeing is finished, the temperature is reduced to 80 ℃ at a cooling rate of 4 ℃/min, and no liquid is discharged.
(2) The full-polyester knitted fabric mildew and flooding cleaning stage: adding a low-alkali whitening agent into a dye vat until the concentration in the vat is 0.5g/L (TF-1291K, transmitted intelligent combination Co., ltd); adding sodium hydroxide until the concentration in the tank is 3g/L; adding H 2 O 2 Until the concentration in the cylinder is 6g/L; adding deoiling agent to 1g/L (deoiling agent TF-106T, transferred intelligent combination Co., ltd.) in cylinder; regulating the pH value to 13 by potassium hydroxide, keeping the weight ratio of the reaction bath solution to the polyester fabric to be 15:1, and keeping the temperature at 80 ℃ for 30min; cooling to 50 ℃ at a speed of 4 ℃/min, and discharging residual liquid; and (5) fully washing with clear water.
The conventional process is as follows:
(1) Alkali treatment: 2g/L sodium hydroxide is injected into the jar; adding H 2 O 2 Until the concentration in the cylinder is 2.75g/L; adding deoiling agent to 1g/L (deoiling agent TF-106T, transferred intelligent combination Co., ltd.) in cylinder; the weight ratio of the reaction bath solution to the polyester fabric is 10:1, the temperature is increased to 98 ℃ at 1 ℃/min, and the temperature is kept for 30min; cooling to 50deg.C at 4deg.C/minDischarging residual liquid; and (5) fully washing with clear water.
(2) Dyeing: the dye (disperse red FB) is 0.5% of the weight of the fabric, and the leveling agent is 1g/L (TF-213 HL, transmission intelligent combination Co., ltd.); the weight ratio of the dye liquor to the fabric is 10:1 preparing dye liquor, heating to 100 ℃ at a speed of 1 ℃/min on a high-temperature high-pressure dyeing machine, and preserving heat for 15min; heating to 135 ℃ at a heating rate of 0.5 ℃/min, and preserving heat for 30min; and after the dyeing is finished, cooling to 50 ℃ at a cooling rate of 4 ℃/min, and draining.
(3) Reducing and cleaning, namely injecting reducing and cleaning liquid into a dye vat, wherein the reducing and cleaning liquid contains 3g/L sodium hydrosulfite and 2g/L sodium hydroxide, heating to 90 ℃ at a heating rate of 3 ℃/min, and reducing and cleaning for 20min; cooling to 50 ℃ at a speed of 4 ℃/min, and discharging residual liquid; and (5) fully washing with clear water.
Table 3-1 mildew-removal rating of Dispersion Red FB dyed full polyester knitted fabrics
| Classification | Process flow | Mildew removal grade |
| The invention is that | Dyeing and mildew-removing one-bath two-step | Grade 5 |
| Conventional process | Alkali treatment, dyeing and reduction cleaning | Grade 5 |
TABLE 3-2 color eigenvalues of dispersed red FB dyed full-polyester knitted fabrics
| Classification | L* | a* | b* | K/S |
| The invention is that | 54.51 | 59.74 | 0.87 | 5.895 |
| Conventional process | 54.65 | 60.67 | 1.25 | 6.009 |
Table 3-3 washing fastness of Dispersion Red FB dyed full polyester knitted fabrics
As can be seen from tables 3-1, 3-2 and 3-3, the bleaching and dyeing one-bath two-step process has better mildew-removal grade for terylene knitting, has close dyeing characteristic value and obviously better washing fastness than the conventional process, reduces the alkali and oxygen resistance requirement for disperse dyes, simplifies the process, saves reagents, prevents pollution caused by the reagents, and is more environment-friendly.
Example 4
This example provides a dyeing (disperse blue 2 BLN) desmutting one-bath two-step process for a full polyester knit fabric, the steps being as follows:
(1) High-temperature acid bath dyeing stage of full-polyester stained fabric: the dye (disperse blue 2 BLN) is used in an amount of 5% of the fabric weight, and the leveling agent is 1g/L (TF-213 HL, transmission Intelligence Co., ltd.); the weight ratio of the dye liquor to the fabric is 10:1 preparing dye liquor, regulating the pH to 4 by adopting acetic acid, heating to 100 ℃ on a high-temperature high-pressure dyeing machine at a speed of 1 ℃/min, and preserving heat for 15min; heating to 130 ℃ at a heating rate of 1 ℃/min, and preserving heat for 30min;
after dyeing in step 1, cleaning is performed in the following three ways.
(a) Staining +TF-1219K Low temperature-sample 1
Cooling to 85deg.C at a cooling rate of 4deg.C/min without discharging liquor, and adding low alkali whitening agent to the dye vat until the concentration in the vat is 1g/L (TF-1291K, transferred Intelligence Co., ltd.); adding sodium hydroxide to the concentration of 2g/L in the tank; adding H 2 O 2 Until the concentration in the cylinder is 2.75g/L; adding deoiling agent to 1g/L (deoiling agent TF-106T, transferred intelligent combination Co., ltd.) in cylinder; regulating the pH to 12 with potassium hydroxide, keeping the weight ratio of the reaction bath solution to the polyester fabric at 15:1, and keeping the temperature at 85 ℃ for 30min; cooling to 50 ℃ at a speed of 4 ℃/min, and discharging residual liquid; and (5) fully washing with clear water. Labeled sample 1.
(b) Staining +TF-1291K high temperature-sample 2
Cooling to 98deg.C at a cooling rate of 4deg.C/min without discharging liquor, and adding low alkali whitening agent to the dye vat until the concentration in the vat is 1g/L (TF-1291K, transferred Intelligence Co., ltd.); adding sodium hydroxide to the concentration of 2g/L in the tank; adding H 2 O 2 Until the concentration in the cylinder is 2.75g/L; adding deoiling agent to 1g/L (deoiling agent TF-106T, transferred intelligent combination Co., ltd.) in cylinder; adjusting the pH to 12 with sodium hydroxide, keeping the weight ratio of the reaction bath solution to the polyester fabric at 15:1, and keeping the temperature at 98 ℃ for 30min; cooling to 50 ℃ at a speed of 4 ℃/min, and discharging residual liquid; and (5) fully washing with clear water. Labeled sample 2.
(c) Conventional decontamination System+Low temperature-sample 3
Cooling to 85 ℃ at a cooling rate of 4 ℃/min, and injecting 2g/L sodium hydroxide into the tank without discharging liquid; adding H 2 O 2 Until the concentration in the cylinder is 2.75g/L; adjusting the pH to 12 with sodium hydroxide, keeping the weight ratio of the reaction bath solution to the polyester fabric at 15:1, and keeping the temperature at 85 ℃ for 30min; cooling to 50 ℃ at a speed of 4 ℃/min, and discharging residual liquid; and (5) fully washing with clear water. Labeled sample 3.
Conventional Process-sample 4
(1) Alkali treatment: 2g/L sodium hydroxide is injected into the jar; adding H 2 O 2 Until the concentration in the cylinder is 2.75g/L; adding deoiling agent to 1g/L (deoiling agent TF-106T, transferred intelligent combination Co., ltd.) in cylinder; the weight ratio of the reaction bath solution to the polyester fabric is 15:1, the temperature is increased to 98 ℃ at 1 ℃/min, and the temperature is kept for 30min; cooling to 50 ℃ at a speed of 4 ℃/min, and discharging residual liquid; and (5) fully washing with clear water.
(2) Dyeing: the dye (disperse blue 2 BLN) is used in an amount of 5% of the fabric weight, and the leveling agent is 1g/L (TF-213 HL, transmission Intelligence Co., ltd.); the weight ratio of the dye liquor to the fabric is 10:1 preparing dye liquor, regulating the pH to 4 by adopting acetic acid, heating to 100 ℃ on a high-temperature high-pressure dyeing machine at a speed of 1 ℃/min, and preserving heat for 15min; heating to 130 ℃ at a heating rate of 1 ℃/min, and preserving heat for 30min; and after the dyeing is finished, cooling to 50 ℃ at a cooling rate of 4 ℃/min, and draining.
(3) Reducing and cleaning, namely injecting reducing and cleaning liquid into a dye vat, wherein the reducing and cleaning liquid contains 3g/L sodium hydrosulfite and 2g/L sodium hydroxide, heating to 90 ℃ at a heating rate of 3 ℃/min, and reducing and cleaning for 20min; cooling to 50 ℃ at a speed of 4 ℃/min, and discharging residual liquid; and (5) fully washing with clear water. Labeled sample 4.
TABLE 4-1 mildew-removal rating of disperse blue 2BLN dyed full-polyester knitted fabrics
| Classification | Process flow | Mildew removal grade |
| Sample 1 | Dyeing +TF-1291K+ low temperature | Grade 5 |
| Sample 2 | Dyeing +TF-1291K+ high temperature | Grade 5 |
| Sample 3 | Dyeing + conventional decontamination system + low temperature | 3 grade |
| Sample 4 | Alkali treatment, dyeing and reduction cleaning | Grade 5 |
TABLE 4-2 color characterization values for blue 2BLN dyed full-polyester knitted fabrics
| Classification | L* | a* | b* | K/S |
| Sample 1 | 48.03 | -1.65 | -38.25 | 5.849 |
| Sample 2 | 52.42 | -2.36 | -36.07 | 3.592 |
| Sample 3 | 47.33 | -0.57 | -38.47 | 5.926 |
| Sample 4 | 47.55 | -1.34 | -38.69 | 6.098 |
TABLE 4-3 washing fastness of blue 2BLN dyed full-polyester knitted fabrics
As can be seen from tables 4-1, 4-2 and 4-3, the sample 1 has better mildew-removal grade for terylene knitting, is close to the dyeing characteristic value of the sample 4, and has obviously better washing fastness than the sample 4; the mildew-removing pollution of the sample 2 is clean, and the influence of dyeing chromatic light is large; the mildew removal of the sample 3 is poor, and the influence of dyeing color light is small; in conclusion, the temperature has serious influence on the color light, the mildew-removal low-temperature ensures the stability of the dyed color light, the low-alkali white-scouring agent TF-1291K ensures the cleaning capability of the mildew-removal at low temperature, the process flow is simplified, the reagent is saved, the pollution caused by the reagent is prevented, and the process is more environment-friendly.
While particular embodiments of the present invention have been illustrated and described, it will be appreciated that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.
Claims (9)
1. The dyeing and mildew-removing process for the polyester fabric disperse dye is characterized by comprising the following steps of: dyeing the full polyester mildew fabric in an acid bath, cooling to 80-90 ℃, adding a low-alkali whitening agent TF-1291K, and adding sodium hydroxide and H 2 O 2 Adjusting the pH to above 10, preserving heat for 30-40 minutes at 80-90 ℃, cooling and draining, and cleaning the fabric with clear water to remove residual dye and auxiliary agents on the fabric, so as to obtain the dyed and decontaminated full-polyester fabric; wherein the concentration of the low-alkali whitening agent TF-1291K is 0.5 g/L-2 g/L, the concentration of sodium hydroxide is 1-3 g/L, and H 2 O 2 The concentration of (C) is 0.9 g/L-6 g/L.
2. The process of claim 1, wherein the pH adjustment is performed using at least one of sodium hydroxide, potassium hydroxide, liquid alkali, sodium carbonate, sodium bicarbonate.
3. The process according to claim 1, characterized in that a deoiling agent TF-106T is also added before the pH adjustment, the concentration of deoiling agent TF-106T being between 0.5g/L and 3.0g/L.
4. Process according to claim 1, characterized in that during dyeing in an acid bath, a levelling agent TF-213HL is added, the concentration of levelling agent TF-213HL being 0.5-2 g/L.
5. The process according to claim 1, wherein the dyeing process in an acid bath is: heating at a rate of 0.5-4deg.C/min, maintaining at 70-100deg.C for 5-15 min, and then heating to 125-135 deg.C for 30-60 min.
6. The process according to claim 5, wherein the low-alkali whitening agent TF-1291K is added immediately after the end of dyeing by cooling to 80-90℃in 20 min.
7. The process according to claim 1, wherein the disperse dye is used in an amount of 0.1 to 10% by weight of the total polyester fabric in the acidic bath.
8. The process according to claim 1, wherein the pH in the acidic bath is 4-5.
9. The process of claim 1, wherein the pH of the acidic bath is adjusted with an acidic substance, the acidic substance being at least one of acetic acid and citric acid.
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