CN111962284A - Printing and dyeing process of polyester fabric - Google Patents
Printing and dyeing process of polyester fabric Download PDFInfo
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- CN111962284A CN111962284A CN202010821942.1A CN202010821942A CN111962284A CN 111962284 A CN111962284 A CN 111962284A CN 202010821942 A CN202010821942 A CN 202010821942A CN 111962284 A CN111962284 A CN 111962284A
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- Prior art keywords
- grey cloth
- fabric
- dyeing
- alkali
- printing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000004744 fabric Substances 0.000 title claims abstract description 178
- 229920000728 polyester Polymers 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 65
- 238000004043 dyeing Methods 0.000 title claims abstract description 45
- 230000008569 process Effects 0.000 title claims abstract description 40
- 238000007639 printing Methods 0.000 title claims abstract description 21
- 239000003513 alkali Substances 0.000 claims abstract description 65
- 238000011282 treatment Methods 0.000 claims abstract description 26
- 239000003599 detergent Substances 0.000 claims abstract description 23
- 238000005406 washing Methods 0.000 claims abstract description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 63
- 230000004048 modification Effects 0.000 claims description 36
- 238000012986 modification Methods 0.000 claims description 36
- 239000000243 solution Substances 0.000 claims description 23
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 21
- 239000004094 surface-active agent Substances 0.000 claims description 20
- 108010010803 Gelatin Proteins 0.000 claims description 18
- 229920000159 gelatin Polymers 0.000 claims description 18
- 239000008273 gelatin Substances 0.000 claims description 18
- 235000019322 gelatine Nutrition 0.000 claims description 18
- 235000011852 gelatine desserts Nutrition 0.000 claims description 18
- 239000000376 reactant Substances 0.000 claims description 18
- 238000002360 preparation method Methods 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 9
- 229920006150 hyperbranched polyester Polymers 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 238000004821 distillation Methods 0.000 claims description 6
- 238000000967 suction filtration Methods 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 230000008961 swelling Effects 0.000 claims description 4
- 239000000706 filtrate Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 230000008014 freezing Effects 0.000 claims description 3
- 238000007710 freezing Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- PUVAFTRIIUSGLK-UHFFFAOYSA-M trimethyl(oxiran-2-ylmethyl)azanium;chloride Chemical compound [Cl-].C[N+](C)(C)CC1CO1 PUVAFTRIIUSGLK-UHFFFAOYSA-M 0.000 claims description 3
- 238000007730 finishing process Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000000835 fiber Substances 0.000 description 39
- 239000000975 dye Substances 0.000 description 26
- 208000016261 weight loss Diseases 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 15
- 239000013585 weight reducing agent Substances 0.000 description 14
- -1 hydroxide ions Chemical class 0.000 description 12
- 230000007547 defect Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- 230000009467 reduction Effects 0.000 description 11
- 229920004933 Terylene® Polymers 0.000 description 9
- 239000005020 polyethylene terephthalate Substances 0.000 description 9
- 125000001453 quaternary ammonium group Chemical group 0.000 description 9
- 230000007062 hydrolysis Effects 0.000 description 8
- 238000006460 hydrolysis reaction Methods 0.000 description 8
- 238000011946 reduction process Methods 0.000 description 7
- 235000019832 sodium triphosphate Nutrition 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 5
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910021645 metal ion Inorganic materials 0.000 description 4
- 125000003700 epoxy group Chemical group 0.000 description 3
- 125000004185 ester group Chemical group 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000002203 pretreatment Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- MSFSPUZXLOGKHJ-UHFFFAOYSA-N Muraminsaeure Natural products OC(=O)C(C)OC1C(N)C(O)OC(CO)C1O MSFSPUZXLOGKHJ-UHFFFAOYSA-N 0.000 description 2
- 108010013639 Peptidoglycan Proteins 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000005411 Van der Waals force Methods 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 2
- 239000008139 complexing agent Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000000986 disperse dye Substances 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000009044 synergistic interaction Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- LQZZUXJYWNFBMV-UHFFFAOYSA-N 1-dodecanol group Chemical group C(CCCCCCCCCCC)O LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 1
- 239000004475 Arginine Substances 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 241000192125 Firmicutes Species 0.000 description 1
- 239000004472 Lysine Substances 0.000 description 1
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 125000003275 alpha amino acid group Chemical group 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- ODKSFYDXXFIFQN-UHFFFAOYSA-N arginine Natural products OC(=O)C(N)CCCNC(N)=N ODKSFYDXXFIFQN-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000009089 cytolysis Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000001236 detergent effect Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000985 reactive dye Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical group O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- HFQQZARZPUDIFP-UHFFFAOYSA-M sodium;2-dodecylbenzenesulfonate Chemical group [Na+].CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O HFQQZARZPUDIFP-UHFFFAOYSA-M 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/46—Compounds containing quaternary nitrogen atoms
- D06M13/463—Compounds containing quaternary nitrogen atoms derived from monoamines
-
- 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
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/507—Polyesters
-
- 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
-
- 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
- D06P3/528—Polyesters using reactive dyes
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention relates to a printing and dyeing process of a polyester fabric, belonging to the technical field of fabric dyeing and finishing processes, and comprising the following process steps: s1: carrying out preliminary pretreatment on the grey cloth to obtain pretreated grey cloth; s2: performing secondary pretreatment on the grey cloth, namely performing oil stain washing on the pretreated grey cloth obtained in the step S1 by using a detergent to obtain a clean grey cloth; s3: performing alkali decrement on the grey cloth, namely taking the clean washed grey cloth obtained in the step S2, and performing alkali decrement to obtain alkali decrement grey cloth; s4: dyeing the grey cloth, namely dyeing the alkali-reduced grey cloth obtained in the step S3 to obtain dyed grey cloth; s5: and (5) post-treatment. The invention has the advantage of reducing the possibility of color stain in the polyester fabric.
Description
Technical Field
The invention relates to the technical field of fabric dyeing and finishing processes, in particular to a dyeing and printing process of a polyester fabric.
Background
The terylene is the most used variety in the synthetic fiber in the world at present, and the dyeing process in the terylene processing process is greatly different from other fibers. The reason is that no active group required by normal dye dyeing exists on the polyester fiber, so that the dyeing of the polyester fiber is usually realized by swelling the polyester fiber and allowing the disperse dye to enter the polyester fiber.
For example, the application publication number CN108978266A of the present invention discloses a short process and a method for printing and dyeing a full polyester fabric, wherein the preparation steps before printing and dyeing the full polyester fabric and the preparation of clear water in the whole printing and dyeing process required during printing and dyeing are carried out by placing the full polyester fabric on a goods checking platform, mainly checking whether the grey fabric has abnormalities such as drawnwork, weft, yellow spots, mildew spots and the like, simultaneously checking whether the fabric is matched with the required fabric, and under normal conditions, one lot number is required to pay attention to check one time. The alkali reduction treatment of the polyester fabrics can be realized by putting potassium hydroxide into softened clear water, the concentration of the potassium hydroxide in the clear water can be effectively improved by setting the temperature of the clear water to be 90-100 ℃, and the alkali reduction treatment can be effectively realized by adding the polyester fabrics.
The above prior art solutions have the following drawbacks: in the weaving process of the polyester fabric, the oil content is often large, and the polyester fabric belongs to a hydrophobic fabric, so that more oil stains are often adhered to the polyester fabric. In the dyeing process of the polyester fabric at high temperature and high pressure, oil stains shed from polyester fibers easily cause dye molecules to agglomerate, and the problem of color stain is caused when the aggregated dye is adhered to the polyester fabric, so that the product quality is seriously affected. In the technical scheme, the oil stains adhered to the terylene are not treated in the whole dyeing process, so that the terylene fabric is very easy to generate color stains in the dyeing process. Therefore, a printing and dyeing process capable of reducing the possibility of color spots of the polyester fabric is needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a printing and dyeing process of a polyester fabric, which has the advantage of reducing the possibility of color spots of the polyester fabric.
The above object of the present invention is achieved by the following technical solutions:
a printing and dyeing process of a polyester fabric specifically comprises the following process steps:
s1: carrying out preliminary pretreatment on the grey cloth to obtain pretreated grey cloth;
s2: a second pretreatment of the gray fabric by degreasing the pretreated gray fabric obtained in the step S1 with a detergent
Washing to obtain clean gray fabric;
s3: performing alkali decrement on the grey cloth, namely taking the clean washed grey cloth obtained in the step S2, and performing alkali decrement to obtain alkali decrement grey cloth;
s4: dyeing the grey cloth, namely dyeing the alkali-reduced grey cloth obtained in the step S3 to obtain dyed grey cloth;
s5: and (5) post-treatment.
By adopting the technical scheme, if oil stains are adhered to the polyester fabric and are not treated completely, the oil stains are easy to dissociate and gather the dye in the dyeing process, so that the generation of color stains is caused. And the grey cloth is cleaned before the alkali decrement, so that the oil stains on the polyester fibers can be separated, and the dye is not easy to gather in the dyeing process, thereby reducing the possibility of generating the color stains.
Preferably, the pretreatment of the grey fabric in the step S1 specifically includes the following steps:
a. pre-shrinking, specifically, placing the gray fabric into a sodium hydroxide solution with the mass concentration of 2-4%, and treating at the temperature of 120-130 ℃ for 30-40 minutes to obtain a gray fabric I; cleaning the grey cloth I until the pH value of cleaning water is less than or equal to 8 to obtain grey cloth II;
b. and (b) performing pre-setting, specifically, performing pre-setting on the second gray fabric obtained in the step a at the temperature of 180-210 ℃ to obtain a pre-processed gray fabric.
By adopting the technical scheme, the pre-shrinking is the pretreatment under the high-temperature damp and hot state, the impurities on the fabric can be preliminarily removed by the pre-shrinking treatment, and the internal stress of the fabric can be eliminated to a great extent. This is because, in the high-temperature moist-heat state, the regions with high crystallinity in the fabric fibers tend to be de-oriented, and the regions with low crystallinity tend to be oriented. Then, the orientation degree of the fabric tends to be flat, internal stress formed in the manufacturing and storage processes of the fabric is released, and finally the dimensional stability of the fabric is increased.
In addition, under the alkaline and heating conditions, the oil stains adhered to the grey cloth can be preliminarily cleaned, so that the possibility of the oil stains adhering to the grey cloth is reduced, and the possibility of generation of color stains can be correspondingly reduced. A small amount of hydrolysis can also occur to the polyester fabric under the alkaline and heating conditions, so that the hydrophilicity of the polyester fabric is improved, and the subsequent cleaning effect on the polyester fabric is improved.
The pre-setting is a result of the continuous pre-shrinking and the slow pre-shrinking in a damp-heat state, and the pre-setting process in a dry-heat state needs to be consolidated and strengthened.
Preferably, the detergent in step S2 includes the following components by weight percentage:
by adopting the technical scheme, because the lipophilicity of the polyester fiber is stronger, the oil stain is always uniformly attached to the polyester fiber with a certain thickness, and then, the oil stain on one part of the surface can be washed off by preshrinking under the alkaline condition, but the oil stain is difficult to be completely washed off. At this time, the oil stain on the polyester needs to be further washed by using a detergent, but the polyester fiber has excessively strong hydrophobicity, so that the surfactant needs to be emulsified into particles with small particle size by adding a large amount of emulsifier, and the particles are more easily attached to the surface of the oil stain to wash the oil stain.
Sodium tripolyphosphate is used as a builder to promote the washing effect, and sodium tripolyphosphate has the effect of promoting emulsification on oil stains, so that the washing effect of the surfactant can be improved. And the sodium tripolyphosphate also has certain chelating capacity, so that the sodium tripolyphosphate can be complexed with metal ions in water to generate insoluble salt, and the influence of the metal ions on the washing effect of the detergent is reduced.
However, sodium tripolyphosphate belongs to phosphorus-containing pollutants, and the sewage is greatly influenced on the environment after being discharged, so that the amount of the sodium tripolyphosphate can be reduced by additionally adding a metal ion complexing agent so as to reduce the content of phosphorus in the sewage.
Preferably, the preparation process of the surfactant specifically comprises the following process steps:
a. preparing a gelatin aqueous solution with the mass concentration of 2-8%, standing and swelling for 1.5-2 hours, and stirring at the temperature of 60-70 ℃ until the solid is completely dissolved to obtain a gelatin solution;
b. taking the gelatin solution obtained in the step a, dropwise adding a sodium hydroxide solution with the concentration of 70-80g/L until the pH value is 10, then adding EPQA, and stirring for 5-6 hours at the temperature of 55-60 ℃ to obtain a primary reactant;
c. taking the primary reactant in the step b, concentrating to 10-12%, freezing the concentrated product at-40 ℃ for 12-14 hours, and then vacuum drying for 8-10 hours to obtain a crude reactant;
d. and (c) taking the crude reactant in the step (c), extracting for 60-72 hours by using acetone as a solvent through a Soxhlet extractor, and drying the extracted solid for 18-24 hours in vacuum at the temperature of 40-60 ℃ to obtain the surfactant.
By adopting the technical scheme, under the alkaline condition, the amino groups of the side chains of lysine and arginine in the gelatin have stronger reaction activity, so that the addition reaction with the epoxy group is easy to occur. And the EPQA contains an organic quaternary ammonium group, and through the process, an epoxy group in the EPQA reacts with an active group on a gelatin side chain to introduce the organic quaternary ammonium group into a gelatin structure. The lipophilicity of the long chain alkane on the EPQA and the ionic action of the quaternary ammonium group modify the short-range ordered structure of the gelatin, thereby modifying the gelatin. That is, the gelatin modified by EPQA has amphipathy, so that the oil stain can be well wrapped to wash the oil stain.
And because quaternary ammonium cationic groups are introduced on the gelatin, the gelatin can adsorb negatively charged bacteria and restrict the movement of the negatively charged bacteria, thereby playing an antibacterial role. The main component of the cell wall of gram-positive bacteria is peptidoglycan, and the gelatin modified by EPQA has an amino acid structure which is easy to interfere or inhibit the formation of peptidoglycan glycosidic bonds in the cell wall structure, so as to accelerate the bacterial lysis and achieve the antibacterial effect.
Preferably, the alkali deweighting of the grey cloth in the step S3 specifically includes the following process steps: putting the clean gray fabric obtained in the step S2 into liquid caustic soda, wherein the concentration of sodium hydroxide is 3-10g/L, the concentration of the hyperbranched modification accelerator is 0.5-1.5g/L, the bath ratio is 1: (25-35), the alkali decrement rate is 10-20%, and the alkali decrement is 15-20 minutes at the temperature of 95-98 ℃, thus obtaining the alkali decrement grey cloth.
By adopting the technical scheme, the reason that the polyester has too strong hydrophobicity is that the time for the hydrolysis of polyester molecules is the time for influencing the treatment time in the alkali weight reduction process of the polyester. The alkali decrement of the terylene is a double diffusion reaction process, hydroxide ions diffuse to the surface of the terylene fiber, an amorphous area and the edge of a crystalline area, and hydrolysis products diffuse from the surface of the terylene fiber to alkali liquor. Once the hydrolysis of the ester group in the polyester fiber molecular chain is started, the number of active units in the polyester fiber molecular chain is obviously increased. Once the polyester fiber begins to hydrolyze, the density of the fiber is reduced, the double diffusion coefficient is increased, the reaction rate constant is increased, the probability of contact between ester groups and hydroxyl is increased, and the further alkali reduction of the polyester fiber is facilitated. That is, the alkali weight loss of the polyester fiber is an accelerated process once started.
After the grey cloth is cleaned, part of the surfactant is adsorbed on the polyester fibers through hydrogen bonds, Van der Waals force and the like, and the surfactant has a large number of polar groups and quaternary ammonium ion groups, and both the polar groups and the quaternary ammonium ion groups have strong adsorption effects on hydroxide ions in the liquid caustic soda. That is to say, the cleaned polyester fabric not only reduces oil stains, but also enables hydroxyl ions to be enriched on the surface of the polyester fiber, and the hydroxyl ions are easy to react with ester groups in polyester molecules, so that polyester macromolecular chains are broken. That is, the cleaned polyester fiber can start the hydrolysis of polyester molecules in a short time, so that the alkali weight reduction treatment time is greatly reduced, and the production cost is reduced.
The hyperbranched modification accelerator is a polycationic compound which contains a plurality of quaternary ammonium cations and can be adsorbed on the surface of the polyester fiber to accelerate the hydrolysis of the polyester fiber. Because the hyperbranched modification accelerator and the surfactant are both cationic assistants, the hyperbranched modification accelerator and the surfactant compete with each other, so that the hyperbranched modification accelerator and the surfactant are adsorbed to different parts of the surface of the polyester fiber more uniformly, the alkali decrement uniformity of the polyester fiber is improved, and the possibility of great reduction of mechanical properties caused by excessive alkali decrement at partial positions of the polyester fiber is reduced.
And the hyperbranched modification promoter has a synergistic effect among a plurality of quaternary ammonium cations, and the hyperbranched modification promoter and the quaternary ammonium cations on the surfactant also generate synergy, so that the hyperbranched modification promoter has a larger attraction to hydroxide ions in a solution. In addition, the quaternary ammonium cation of the hyperbranched modified accelerator has large volume, weaker bonding force with the carried hydroxide ions, higher exposed degree of the hydroxide ions and stronger nucleophilicity of the exposed hydroxide ions. For several reasons, the hydroxyl ions can attack ester carbonyl groups more easily to hydrolyze ester bonds, so that not only the treatment time for alkali reduction is reduced, but also the concentration of liquid alkali required for alkali reduction is correspondingly reduced.
Preferably, three pre-treatments of the grey cloth are further performed between the step S3 and the step S4, and the method specifically comprises the following steps:
a. and (3) putting the alkali-reduced gray fabric obtained in the step (S3) into a treatment solution, and keeping the temperature at 40-50 ℃ for 20-30min, wherein the bath ratio is 1: (20-30), obtaining a grey cloth a;
b. adding sodium hydroxide into the treatment solution in the step a until the concentration is 3-5g/L, and continuously preserving the temperature of the grey cloth a for 30-40min to obtain three-time treated grey cloth;
wherein the treatment fluid is 30-35% (owf) of aqueous solution of hyperbranched modification accelerator.
By adopting the technical scheme, after alkali weight reduction, the performances of moisture absorption, air permeability, hydrophilicity and the like of the polyester fabric can be greatly improved, but on the whole, the polyester fabric still has strong hydrophobicity, so that the dye is not easy to dye, and only can be dyed by using disperse dye. After the alkali is reduced, part of the hyperbranched modification accelerator is adhered to the polyester fiber, so that the polyester fiber has better hydrophilicity.
And the polyester fabric after the alkali decrement is further pretreated for three times, so that the hyperbranched modification promoter can be further adhered to the polyester fiber, and the polar active group on the hyperbranched modification promoter can generate great attraction to the dye and enhance hydrogen bonds, van der Waals force and the like between the dye and the polyester fiber, thereby increasing the dye uptake and reducing the use amount of the dye. And the use amount of liquid caustic soda in the subsequent dyeing process can be reduced after the hydrophilicity of the polyester fiber is enhanced, and the reduction of the amount of the liquid caustic soda can not only reduce the pollution of waste water, but also reduce the hydrolysis of the dye so as to further reduce the use amount of the dye.
Preferably, the hyperbranched modification promoter comprises the following components in percentage by weight:
by adopting the technical scheme, the molecular terminal of the hyperbranched polyester H30 is a hydroxyl group with stronger activity, which can react with an epoxy group in 2, 3-epoxypropyltrialkyl ammonium chloride, and after the 2, 3-epoxypropyltrialkyl ammonium chloride reacts with the hyperbranched polyester H30, a quaternary ammonium group is introduced on the hyperbranched polyester H30, so that the hyperbranched modification accelerator has a good promotion effect on alkali decrement.
In addition, after the alkali weight reduction, ester bonds on the polyester fibers are hydrolyzed in a large amount, namely, a large amount of carboxyl exists on the polyester fibers, and unreacted hydroxyl at the tail end of the hyperbranched polyester H30 can react with the carboxyl hydrolyzed from the polyester fibers under the conditions of heating and alkalinity, so that the hyperbranched modification accelerator is fixed on the polyester fibers, and a large amount of quaternary ammonium groups exist on the surface of the hyperbranched modification accelerator, so that the hydrophilicity of the polyester fibers is greatly improved, and the hydrophilic modification is carried out on the polyester fibers. Compared with common intermolecular acting force, the reaction bonding force is stronger, so that the hyperbranched modification accelerator is not easy to wash off, and the wearability of the polyester fabric is improved.
Preferably, the preparation process of the hyperbranched modification accelerator specifically comprises the following process steps:
a. adding hyperbranched polyester H30 into DMF according to a proportion, stirring until the solid is completely dissolved, and then adding sodium hydroxide to obtain a mixture A;
b. dissolving 2, 3-epoxypropyltrimethylammonium chloride in DMF, dropwise adding the solution into the mixture A obtained in the step a, and reacting at the temperature of 50-60 ℃ for 18-24 hours to obtain a reactant B;
c. and c, carrying out suction filtration on the reactant B obtained in the step B, carrying out reduced pressure distillation on filtrate obtained by suction filtration, and carrying out vacuum drying on solid obtained by reduced pressure distillation to obtain the hyperbranched modification promoter.
By adopting the technical scheme, the whole preparation process flow of the hyperbranched modification accelerator is short, and the preparation conditions are mild, so that the hyperbranched modification accelerator is suitable for industrial preparation.
Preferably, the post-treatment in step S5 specifically includes the following steps:
a. rinsing;
b. dehydrating;
c. scutching;
d. presetting;
e. shaping;
f. and (7) packaging and warehousing.
By adopting the technical scheme, after the polyester fabric is dyed, the polyester fabric is further treated by post-treatment.
In summary, the invention includes at least one of the following beneficial technical effects:
1. through additionally arranging secondary pretreatment, the oil stain on the polyester fabric is washed by using a detergent, so that the possibility of generating color stain caused by falling of the oil stain is reduced;
2. by optimizing the formula of the detergent, the detergent can remove oil stains on the polyester fabric, and partial components on the detergent can be adhered to the polyester fabric to promote alkali reduction, so that the progress of alkali reduction is accelerated, and the production cost is reduced;
3. the hyperbranched modified accelerator added in the alkali weight reduction process can not only promote the alkali weight reduction process, but also cooperate with the surfactant in the detergent to further promote the alkali weight reduction process, and improve the uniformity of the alkali weight reduction so as to reduce the possibility of overlarge reduction of the local strength of the polyester fabric after the alkali weight reduction;
4. by further carrying out three times of pretreatment on the terylene fabric after alkali decrement, the hydrophilicity of the terylene fabric can be further improved so as to improve the dyeing effect and reduce the use amount of dye and liquid alkali, and the hydrolysis of the dye can be further reduced by reducing the use amount of the liquid alkali, so that the use amount of the dye is further reduced so as to reduce the production cost.
Detailed Description
Example 1
The invention discloses a printing and dyeing process of a polyester fabric, which specifically comprises the following process steps:
s1: the preliminary pretreatment of the grey cloth specifically comprises the following process steps:
a. pre-shrinking, namely putting the gray fabric into a sodium hydroxide solution with the mass concentration of 4%, and treating for 40 minutes at the temperature of 130 ℃ to obtain a gray fabric I; cleaning the grey cloth I until the pH value of cleaning water is equal to 8 to obtain grey cloth II;
b. and (b) pre-shaping, specifically, pre-shaping the second grey fabric obtained in the step a at a temperature of 180 ℃ to obtain a pre-treated grey fabric.
S2: and (4) performing secondary pretreatment of the grey cloth, namely performing oil stain washing on the pretreated grey cloth obtained in the step S1 by using a detergent to obtain a clean grey cloth.
The detergent comprises the following components in percentage by weight:
wherein the emulsifier is lauryl alcohol phosphate and is petrochemical produced by Jiangsu Haian.
Wherein the sodium tripolyphosphate is produced by fine chemical industry of Jiangsu Da Jiang.
Wherein the metal ion complexing agent is sodium citrate and is produced by Ba Jiang chemistry.
The preparation process of the surfactant specifically comprises the following process steps:
a. preparing a gelatin aqueous solution with the mass concentration of 6%, standing and swelling for 1.5 hours, and stirring at the temperature of 60 ℃ until the solid is completely dissolved to obtain a gelatin solution;
b. taking the gelatin solution obtained in the step a, dropwise adding a sodium hydroxide solution with the concentration of 70g/L until the pH value is 10, then adding EPQA, and stirring for 5 hours at the temperature of 55 ℃ to obtain a primary reactant;
c. taking the primary reactant in the step b, concentrating to 10%, freezing the concentrated product at the temperature of-40 ℃ for 12 hours, and then drying in vacuum for 8 hours to obtain a crude reactant;
d. and (c) taking the crude reactant in the step c, extracting for 60 hours by using acetone as a solvent through a Soxhlet extractor, and drying the extracted solid for 18 hours in vacuum at the temperature of 40 ℃ to obtain the surfactant.
Wherein EPQA is 1, 2-epoxypropyldimethyldodecylammonium chloride.
S3: the alkali deweighting of the grey cloth specifically comprises the following process steps: and (4) putting the clean gray fabric obtained in the step (S2) into liquid caustic soda, wherein the concentration of sodium hydroxide is 7g/L, the concentration of the hyperbranched modification accelerator is 1g/L, the bath ratio is 1: 25, the alkali decrement rate is 15%, and the alkali decrement is 15 minutes at the temperature of 95 ℃ to obtain the alkali decrement grey cloth.
The alkali deweighting grey fabric is pretreated for three times, and the method specifically comprises the following process steps:
a. and (4) putting the alkali-reduced gray fabric obtained in the step (S3) into a treatment solution, and keeping the temperature at 40 ℃ for 20min, wherein the bath ratio is 1: 20, obtaining a grey fabric a;
b. and d, adding sodium hydroxide into the treatment liquid in the step a to the concentration of 3g/L, and keeping the temperature of the grey cloth a for 30min to obtain the three-time treated grey cloth.
Wherein the treatment fluid is 30% (owf) of aqueous solution of hyperbranched modification accelerator.
The hyperbranched modified accelerator comprises the following components in percentage by weight:
the preparation process of the hyperbranched modified accelerator specifically comprises the following process steps:
a. adding hyperbranched polyester H30 into DMF according to a proportion, stirring until the solid is completely dissolved, and then adding sodium hydroxide to obtain a mixture A;
b. dissolving 2, 3-epoxypropyltrimethylammonium chloride in DMF, dropwise adding the solution into the mixture A obtained in the step a, and reacting at the temperature of 50 ℃ for 18 hours to obtain a reactant B;
c. and c, carrying out suction filtration on the reactant B obtained in the step B, carrying out reduced pressure distillation on filtrate obtained by suction filtration, and carrying out vacuum drying on solid obtained by reduced pressure distillation to obtain the hyperbranched modification promoter.
Wherein the hyperbranched polyester H30 is produced by Wuhan hyperbranched resin technology limited company.
S4: and dyeing the grey cloth, specifically, dyeing the grey cloth subjected to the three-time treatment by using reactive dyes. Since dyeing of gray cloth is a conventional technique, it is not described in detail.
S5: and (3) post-treatment, wherein the post-treatment specifically comprises the following process steps:
a. rinsing, specifically, continuously washing with a continuous rope-shaped washing machine for 10 minutes;
b. dewatering, specifically, dewatering the grey cloth rinsed in the step a by using a dewatering machine;
c. scutching, namely using a scutching machine to scutch the dehydrated rope-shaped grey cloth into an open width;
d. presetting, in particular to presetting the grey cloth after scutching by using a presetting machine;
e. setting, specifically, using a setting machine to perform qualitative setting on the pre-set gray fabric;
f. and (7) packaging and warehousing.
Example 2
The difference between example 2 and example 1 is that the gray fabric was dyed without performing the preliminary treatment three times between step S3 and step S4.
Examples 3 to 6 differ from example 1 in that the process parameters in step S1 are given in the following table:
examples 7 to 9 differ from example 1 in that the following table represents the weight percentages of the components of the detergent formulation:
examples 10 to 13 differ from example 1 in that the process parameters for the preparation of the surfactant are as follows:
examples 14-17 differ from example 1 in that the process parameters for the alkali weight loss of the grey cloth are as follows:
examples 18 to 21 differ from example 1 in that the three pretreatments of the grey cloth have the following process parameters:
examples 22 to 26 differ from example 1 in that the hyperbranched modification accelerator comprises the following components in the following weight percentages:
examples 27 to 30 differ from example 1 in that the respective process parameters in the preparation process of the hyperbranched modification accelerator are as follows:
example 31 differs from example 1 in that the pretreatment is not performed three times between step S3 and step S4, that is, the alkali-reduced gray fabric obtained in step S3 is not put into the treatment liquid and is directly subjected to step S4.
Comparative example
Comparative example 1 is different from example 1 in that step S2, i.e., the gray fabric is not cleaned with a detergent, but the pretreated gray fabric is directly subjected to an alkali weight reduction operation.
Comparative example 2 differs from example 1 in that the surfactant in the detergent is sodium dodecylbenzene sulphonate.
Comparative example 3 differs from example 1 in that the accelerator added during the alkali weight reduction and during the three pretreatments was YZ-1127 and was supplied by shanghai chemists.
Comparative example 4 is a polyester fabric prepared by this company using a conventional dyeing and finishing process.
Detection method
And measuring the defect rate, taking 3 pieces of dyed and finished gray fabric, cutting 1 piece of sample with the length of 1m by 1m from each piece of gray fabric, and uniformly cutting 9 pieces of samples with the length of 15cm by 15cm from each piece of sample, namely 27 samples in total. And (3) placing the sample on a defect grid rate plate with the size of 15cm by 15cm, uniformly dividing the defect grid rate plate into 225 grids with the size of 1cm by 1cm, and recording the total number M of defect grids of 27 samples when the grid with defects is a defect grid. The defect occurrence rate is (M/27 x 225) 100%.
The dye uptake E is (1-An/a0) × 100%, where An is the absorbance of the raffinate and a0 is the absorbance of the dye stock.
The soaping color fastness is determined according to the method D (4) of GB/T3921-2008 soaping color fastness test for textiles.
The color fastness to rubbing is determined according to GB/T3920-.
The test results are reported in the following table:
conclusion
By comparing example 1, example 2 and comparative example 4, it can be seen that although the gray fabric was not pretreated three times in example 2, resulting in a reduction in the amount of the hyperbranched modification accelerator fixed to the fabric, the oil stains had been substantially washed in step S2, and thus the rate of defects in the fabric finally obtained in example 2 was not high. However, the amount of the hyperbranched modification promoter attached to the fabric is reduced, which means that the hydrophilicity synergy of the detergent and the hyperbranched modification promoter and the synergy of the detergent and the hyperbranched modification promoter on the adsorption capacity of the dye are reduced, so that the dye uptake and the color fastness of the fabric are reduced slightly. The fabric obtained in example 2 still has a greater performance advantage than the fabric obtained in comparative example 4 by a general dyeing and finishing process.
By comparing the example 1, the comparative example 1 and the comparative example 4, it can be seen that, since the detergent is not used to wash the greasy dirt of the grey cloth in the example 2, even if a part of the greasy dirt can be removed in the dyeing and finishing process, more greasy dirt still adheres to the polyester fiber, so that the defect rate of the finally obtained fabric is high. In addition, the components capable of improving the hydrophilicity of the polyester fabric in the detergent are not fixed on the fabric, so that the components cannot generate hydrophilicity synergy and dye adsorption capability synergy with the hyperbranched modification accelerator added in the alkali weight reduction process and the three pretreatment processes, and the dye uptake, color fastness and the like of the finally obtained fabric are reduced.
By comparing example 1, comparative example 2 and comparative example 4, since the detergent in comparative example 2 uses sodium dodecylbenzene sulfonate as a surfactant, although the sodium dodecylbenzene sulfonate as a surfactant can also better clean the greasy dirt on the fabric, the defect rate is still higher than that of the fabric obtained in example 1, which shows that the detergent effect of the surfactant used in example 1 is better than that of the sodium dodecylbenzene sulfonate. Even if part of the sodium dodecyl benzene sulfonate is attached to the fabric, the sodium dodecyl benzene sulfonate and the hyperbranched modification accelerator added in the alkali weight reduction process and the three pretreatment processes do not generate hydrophilic synergistic interaction and synergistic interaction on the adsorption capacity of the dye, so that the dye uptake, the color fastness and the like of the finally obtained fabric are reduced to some extent.
By comparing example 1, comparative example 3 and comparative example 4, since the commercially available YZ-1127 accelerator is used in the alkali weight reduction process and the three pretreatment processes in comparative example 3, and the YZ-1127 accelerator does not have hydrophilic synergy with the detergent and synergy with the dye adsorption capacity, the dye uptake, the color fastness and the like of the finally obtained fabric are reduced.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (9)
1. A printing and dyeing process of a polyester fabric is characterized by comprising the following steps: the method specifically comprises the following process steps:
s1: carrying out preliminary pretreatment on the grey cloth to obtain pretreated grey cloth;
s2: performing secondary pretreatment on the grey cloth, namely performing oil stain washing on the pretreated grey cloth obtained in the step S1 by using a detergent to obtain a clean grey cloth;
s3: performing alkali decrement on the grey cloth, namely taking the clean washed grey cloth obtained in the step S2, and performing alkali decrement to obtain alkali decrement grey cloth;
s4: dyeing the grey cloth, namely dyeing the alkali-reduced grey cloth obtained in the step S3 to obtain dyed grey cloth;
s5: and (5) post-treatment.
2. The printing and dyeing process of the polyester fabric as claimed in claim 1, characterized in that: the pretreatment of the grey cloth in the step S1 specifically comprises the following process steps:
a. pre-shrinking, specifically, placing the gray fabric into a sodium hydroxide solution with the mass concentration of 2-4%, and treating at the temperature of 120-130 ℃ for 30-40 minutes to obtain a gray fabric I; cleaning the grey cloth I until the pH value of cleaning water is less than or equal to 8 to obtain grey cloth II;
b. and (b) performing pre-setting, specifically, performing pre-setting on the second gray fabric obtained in the step a at the temperature of 180-210 ℃ to obtain a pre-processed gray fabric.
3. The printing and dyeing process of the polyester fabric as claimed in claim 2, characterized in that: the detergent in the step S2 comprises the following components in percentage by weight:
4. the printing and dyeing process of the polyester fabric as claimed in claim 3, characterized in that: the preparation process of the surfactant specifically comprises the following process steps:
a. preparing a gelatin aqueous solution with the mass concentration of 2-8%, standing and swelling for 1.5-2 hours, and stirring at the temperature of 60-70 ℃ until the solid is completely dissolved to obtain a gelatin solution;
b. taking the gelatin solution obtained in the step a, dropwise adding a sodium hydroxide solution with the concentration of 70-80g/L until the pH value is 10, then adding EPQA, and stirring for 5-6 hours at the temperature of 55-60 ℃ to obtain a primary reactant;
c. taking the primary reactant in the step b, concentrating to 10-12%, freezing the concentrated product at-40 ℃ for 12-14 hours, and then vacuum drying for 8-10 hours to obtain a crude reactant;
d. and (c) taking the crude reactant in the step (c), extracting for 60-72 hours by using acetone as a solvent through a Soxhlet extractor, and drying the extracted solid for 18-24 hours in vacuum at the temperature of 40-60 ℃ to obtain the surfactant.
5. The printing and dyeing process of the polyester fabric as claimed in claim 4, characterized in that: the alkali deweighting of the grey cloth in the step S3 specifically comprises the following process steps: putting the clean gray fabric obtained in the step S2 into liquid caustic soda, wherein the concentration of sodium hydroxide is 3-10g/L, the concentration of the hyperbranched modification accelerator is 0.5-1.5g/L, the bath ratio is 1: (25-35), the alkali decrement rate is 10-20%, and the alkali decrement is 15-20 minutes at the temperature of 95-98 ℃, namely the clean gray fabric obtained in the step S2 is taken out and subjected to alkali decrement to obtain the alkali decrement gray fabric.
6. The printing and dyeing process of the polyester fabric as claimed in claim 5, characterized in that: three times of pretreatment of grey cloth is also carried out between the step S3 and the step S4, and the method specifically comprises the following process steps:
a. and (3) putting the alkali-reduced gray fabric obtained in the step (S3) into a treatment solution, and keeping the temperature at 40-50 ℃ for 20-30min, wherein the bath ratio is 1: (20-30), obtaining a grey cloth a;
b. adding sodium hydroxide into the treatment solution in the step a until the concentration is 3-5g/L, and continuously preserving the temperature of the grey cloth a for 30-40min to obtain three-time treated grey cloth;
wherein the treatment fluid is 30-35% (owf) of aqueous solution of hyperbranched modification accelerator.
7. The printing and dyeing process of the polyester fabric as claimed in claim 5 or 6, which is characterized in that: the hyperbranched modified accelerator comprises the following components in percentage by weight:
8. the printing and dyeing process of the polyester fabric as claimed in claim 7, characterized in that: the preparation process of the hyperbranched modified accelerator specifically comprises the following process steps:
a. adding hyperbranched polyester H30 into DMF according to a proportion, stirring until the solid is completely dissolved, and then adding sodium hydroxide to obtain a mixture A;
b. dissolving 2, 3-epoxypropyltrimethylammonium chloride in DMF, dropwise adding the solution into the mixture A obtained in the step a, and reacting at the temperature of 50-60 ℃ for 18-24 hours to obtain a reactant B;
c. and c, carrying out suction filtration on the reactant B obtained in the step B, carrying out reduced pressure distillation on filtrate obtained by suction filtration, and carrying out vacuum drying on solid obtained by reduced pressure distillation to obtain the hyperbranched modification promoter.
9. The printing and dyeing process of the polyester fabric as claimed in claim 1, characterized in that: the post-treatment of the step S5 specifically comprises the following process steps:
a. rinsing;
b. dehydrating;
c. scutching;
d. presetting;
e. shaping;
f. and (7) packaging and warehousing.
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Application publication date: 20201120 |