CN114808486A - Energy-saving low-consumption steaming-free printing and color fixing process for cotton fabric - Google Patents
Energy-saving low-consumption steaming-free printing and color fixing process for cotton fabric Download PDFInfo
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- CN114808486A CN114808486A CN202210644074.3A CN202210644074A CN114808486A CN 114808486 A CN114808486 A CN 114808486A CN 202210644074 A CN202210644074 A CN 202210644074A CN 114808486 A CN114808486 A CN 114808486A
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- 239000004744 fabric Substances 0.000 title claims abstract description 166
- 229920000742 Cotton Polymers 0.000 title claims abstract description 138
- 238000007639 printing Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 50
- 230000008569 process Effects 0.000 title claims abstract description 39
- 239000007788 liquid Substances 0.000 claims abstract description 106
- 238000007731 hot pressing Methods 0.000 claims abstract description 81
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 73
- 230000001681 protective effect Effects 0.000 claims abstract description 53
- 238000005406 washing Methods 0.000 claims abstract description 44
- 238000001035 drying Methods 0.000 claims abstract description 19
- 238000007493 shaping process Methods 0.000 claims abstract description 18
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 36
- 238000002360 preparation method Methods 0.000 claims description 35
- 239000000975 dye Substances 0.000 claims description 32
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 24
- 239000003795 chemical substances by application Substances 0.000 claims description 23
- 238000003825 pressing Methods 0.000 claims description 22
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 15
- 229920006243 acrylic copolymer Polymers 0.000 claims description 12
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 12
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 12
- -1 polydimethylsiloxane Polymers 0.000 claims description 12
- 229920001661 Chitosan Polymers 0.000 claims description 11
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 claims description 11
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 11
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- LRWZZZWJMFNZIK-UHFFFAOYSA-N 2-chloro-3-methyloxirane Chemical compound CC1OC1Cl LRWZZZWJMFNZIK-UHFFFAOYSA-N 0.000 claims description 9
- ZWGSXIDHYSLQGT-UHFFFAOYSA-N 3-hydroxypropyl dimethyl phosphate Chemical compound P(=O)(OCCCO)(OC)OC ZWGSXIDHYSLQGT-UHFFFAOYSA-N 0.000 claims description 9
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims description 9
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 9
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 claims description 9
- 125000000217 alkyl group Chemical group 0.000 claims description 9
- 229960003237 betaine Drugs 0.000 claims description 9
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 9
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 9
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 9
- 239000000985 reactive dye Substances 0.000 claims description 7
- 239000002562 thickening agent Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 5
- 239000000440 bentonite Substances 0.000 claims description 5
- 229910000278 bentonite Inorganic materials 0.000 claims description 5
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 5
- 239000004202 carbamide Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 235000010413 sodium alginate Nutrition 0.000 claims description 5
- 239000000661 sodium alginate Substances 0.000 claims description 5
- 229940005550 sodium alginate Drugs 0.000 claims description 5
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 5
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 30
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 230000000052 comparative effect Effects 0.000 description 33
- 238000003756 stirring Methods 0.000 description 27
- 238000012545 processing Methods 0.000 description 16
- 238000010025 steaming Methods 0.000 description 15
- 230000000844 anti-bacterial effect Effects 0.000 description 13
- 239000000835 fiber Substances 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 9
- 238000001125 extrusion Methods 0.000 description 8
- 238000007789 sealing Methods 0.000 description 8
- 238000004043 dyeing Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 239000004753 textile Substances 0.000 description 7
- 238000010998 test method Methods 0.000 description 5
- 238000004132 cross linking Methods 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 4
- 230000002195 synergetic effect Effects 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 3
- 238000007650 screen-printing Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- ORLGPUVJERIKLW-UHFFFAOYSA-N 5-chlorotriazine Chemical group ClC1=CN=NN=C1 ORLGPUVJERIKLW-UHFFFAOYSA-N 0.000 description 1
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- 238000003854 Surface Print Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- AFOSIXZFDONLBT-UHFFFAOYSA-N divinyl sulfone Chemical compound C=CS(=O)(=O)C=C AFOSIXZFDONLBT-UHFFFAOYSA-N 0.000 description 1
- 238000006266 etherification reaction Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000003223 protective agent Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/38—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using reactive dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
- D06P3/66—Natural or regenerated cellulose using reactive dyes
-
- 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
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
- D06P5/04—After-treatment with organic compounds
-
- 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
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
- D06P5/04—After-treatment with organic compounds
- D06P5/06—After-treatment with organic compounds containing nitrogen
-
- 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
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
- D06P5/04—After-treatment with organic compounds
- D06P5/08—After-treatment with organic compounds macromolecular
-
- 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
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
- D06P5/10—After-treatment with compounds containing metal
-
- 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
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
- D06P5/2066—Thermic treatments of textile materials
- D06P5/2077—Thermic treatments of textile materials after dyeing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Coloring (AREA)
Abstract
The application relates to an energy-saving low-consumption steaming-free printing and color fixing process for cotton fabrics, which comprises the following steps: s1, preparing printing paste; s2, printing; s3, printing and drying; s4, padding and fixing: s4-1, enabling the printed and dried cotton fabric to pass through a gap between a first hot pressing roller and a first liquid feeding roller in a primary hot pressing assembly to finish padding of a color fixing liquid, wherein the temperature of the first hot pressing roller is 75-85 ℃; s4-2, continuously passing the cotton fabric passing through the primary hot-pressing assembly through a gap between a second hot-pressing roller and a second upper liquid roller in the secondary press-fixing assembly to finish padding of the protective liquid; the temperature of the second hot-pressing roller is 55-65 ℃; s5, washing and shaping: and (3) washing the cotton fabric subjected to padding color fixation by adopting cold water, hot water, soaping, hot water and cold water, and drying and shaping after washing to obtain a finished product of the printed cotton fabric. The application reduces the energy consumption in the printing and color fixing process and improves the color fixing effect of the cotton fabric.
Description
Technical Field
The application relates to the technical field of spinning, in particular to an energy-saving low-consumption steaming-free printing and color fixing process for cotton fabrics.
Background
The reactive printing and color fixing process for pure cotton fabric generally comprises the following steps: printing, printing and drying, steaming, washing, drying after washing and the like. The steaming is a processing procedure of treating the fabric with printing paste printed on the surface for a period of time under the conditions of certain temperature, pressure and humidity. In the steaming process, color paste printed on the surface of the fabric absorbs water and swells, and dye is dissolved in the pattern range of the color paste and is diffused and permeated into the fiber; meanwhile, the macromolecular structure of the fiber has enlarged internal gaps under the damp and hot conditions, so that the dye is received and is combined with the dye through various chemical bonds, and the dye is fixed on the fiber.
However, the existing steaming process has long steaming time and high temperature, occupies 50% of energy consumption in the printing and color fixing process, and has unstable temperature and humidity in the steaming process, so that the color fixing effect on the fabric is unstable, the steaming temperature needs to be continuously adjusted to stabilize the color fixing effect, the steaming time is prolonged, and the energy consumption is increased.
Aiming at the problems, the inventor considers that the existing textile printing and color fixing process has the defects of high energy consumption and unstable color fixing effect.
Disclosure of Invention
In order to reduce energy consumption in the printing and color fixing process and improve the color fixing effect of the cotton fabric, the application provides the energy-saving, low-consumption and steaming-free printing and color fixing process of the cotton fabric.
The application provides an energy-saving low-consumption steaming-free printing and color fixing process for cotton fabrics, which adopts the following technical scheme: an energy-saving low-consumption steaming-free printing and color fixing process for cotton fabrics comprises the following steps:
s1, preparing printing paste: the printing paste comprises the following components in parts by mass: 20-25 parts of printing paste, 5-7 parts of reactive dye, 4-6 parts of glycerol, 3-5 parts of urea, 2-5 parts of dye-resistant salt S, 3-5 parts of sodium bicarbonate and 50-60 parts of water; the printing paste comprises the following components in percentage by weight: 4-6% wt of sodium alginate, 1-3% wt of nano bentonite, 2-3% wt of thickening agent and the balance of water;
s2, printing: printing the cotton fabric by using the prepared printing paste;
s3, printing and drying: drying the printed cotton fabric;
s4, padding and fixing:
s4-1, enabling the printed and dried cotton fabric to pass through a primary hot pressing assembly, wherein the primary hot pressing assembly comprises a color fixing liquid tank, a first liquid feeding roller fixed in the color fixing liquid tank and a first hot pressing roller fixed right above the first liquid feeding roller; a gap for cotton fabrics to pass through is reserved between the first liquid feeding roller and the first hot pressing roller, and the temperature of the first hot pressing roller is 75-85 ℃; the color fixing liquid tank is filled with color fixing liquid, and the raw materials of the color fixing liquid comprise the following components in parts by mass: 15-20 parts of diethylenetriamine, 35-40 parts of epoxy chloropropane, 35-40 parts of ethylene glycol, 25-30 parts of a quaternary ammonium salt etherifying agent, 5-7 parts of sodium hexametaphosphate, 5-7 parts of alkyl dimethyl hydroxypropyl phosphate betaine and 30-35 parts of water;
s4-2, continuously enabling the cotton fabric passing through the primary hot-pressing assembly to pass through a secondary pressing assembly, wherein the secondary pressing assembly comprises a protective liquid tank, a second liquid feeding roller fixed in the protective liquid tank and a second hot-pressing roller fixed right above the second liquid feeding roller; a gap for cotton fabrics to pass through is reserved between the second liquid feeding roller and the second hot pressing roller, and the temperature of the second hot pressing roller is 55-65 ℃; the protective liquid tank is filled with protective liquid, and the protective liquid comprises the following components in parts by mass: 20-25 parts of polydimethylsiloxane, 15-20 parts of acrylic copolymer, 5-8 parts of dimethylformamide, 13-17 parts of carboxymethyl chitosan and 40-50 parts of water;
s5, washing and shaping: and (3) washing the cotton fabric subjected to padding color fixation by adopting cold water, hot water, soaping, hot water and cold water, and drying and shaping after washing to obtain a finished product of the printed cotton fabric.
The active dye is monochlorotriazine and vinyl sulfone type double active group active dye; the thickener is LYOPRINT RD-HT thickener.
By adopting the technical scheme, the cotton fabric printed by the printing paste firstly passes through the first hot pressing assembly, the first liquid feeding roller in the first hot pressing assembly is coated with the color fixing liquid, hot pressing the mixture by a first hot pressing roller at the temperature of 75-85 ℃, enabling the color fixing solution to better permeate into the cotton fabric fibers by means of hot pressing, reacting diethylenetriamine and epoxy chloropropane in the color fixing solution in an ethylene glycol solvent medium, etherifying the reaction product by using a quaternary ammonium salt etherifying agent, quaternary ammonium salt base is introduced into the molecule of the reactive color fixing agent to increase the cationic property of the reactive color fixing agent, sodium hexametaphosphate and alkyl dimethyl hydroxypropyl phosphate betaine are added, the compatibility of the color fixing agent with cotton fabric dye and fiber is increased, and reactive groups in the color fixing agent can be salified and combined with the dye and can be crosslinked with hydroxyl, amino and other groups in the fiber and the dye, so that the color fastness is improved; the cotton fabric is subjected to color fixation by the color fixing agent and then passes through the secondary press-fixing assembly, a second liquid feeding roller in the secondary press-fixing assembly is coated with a protection liquid, and hot pressing is carried out by a second hot pressing roller at the temperature of 55-65 ℃, so that the fastness of the printing dye and the cotton fabric is further deepened, and a layer of sealing film is formed on the surface of the cotton fabric due to the synergistic effect of polydimethylsiloxane, acrylic copolymer, dimethylformamide, carboxymethyl chitosan and water in the protection liquid, and the bonding property of the sealing film and the surface of the cotton fabric is strong, so that the printing dye is sealed by the sealing film, and the dyeing fastness of the printing dye is further improved; the components in the protective liquid have synergistic effect, so that a good antibacterial effect can be achieved, and the antibacterial performance of the printed cotton fabric is improved.
According to the application, the color fixing effect of the cotton fabric prepared by the processing technology is greatly improved by adopting the primary hot pressing and secondary press-fixing treatment and matching with the internal cross-linking color fixing of the color fixing liquid and the surface film sealing protection of the protection liquid, so that the cotton fabric has good antibacterial performance and good finished product quality; the method avoids steaming treatment, realizes low consumption and energy conservation of the processing technology, and better meets the requirements of modern energy-saving emission-reducing green technology.
Preferably, the raw materials of the protective solution comprise the following components in parts by mass: 22.5 parts of polydimethylsiloxane, 17.5 parts of acrylic copolymer, 6.5 parts of dimethylformamide, 15 parts of carboxymethyl chitosan and 45 parts of water.
By adopting the technical scheme, the combination ratio of the components in the protective solution is further limited, the performance stability of the protective solution and the binding property with the surface printing dye of the cotton fabric are favorably improved, and the color fixing effect of the protective solution on the cotton fabric dye after film forming is further improved; the components in the protective liquid can play a good synergistic role under a proper combination ratio, and a good antibacterial effect is realized.
Preferably, the preparation method of the protective solution in the step S4-2 is as follows: uniformly mixing polydimethylsiloxane, acrylic copolymer, dimethylformamide, carboxymethyl chitosan and water at 45-50 ℃ to obtain the protective solution.
By adopting the technical scheme, the raw material components in the protective solution are uniformly mixed at 45-50 ℃, so that better dispersion and blending among the components are facilitated, the structural performance of the protective solution is stable, the film forming property is better, and the antibacterial effect is improved.
Preferably, the preparation method of the fixing solution in the step S4-1 is as follows:
1) mixing diethylenetriamine, ethylene glycol and water uniformly; heating to 80-90 ℃, dropwise adding epoxy chloropropane, and reacting for 2-3 h;
2) adding quaternary ammonium salt etherifying agent, and continuously reacting for 1-1.5h at the temperature of 80-90 ℃;
3) and cooling to 65-70 ℃, adding sodium hexametaphosphate and alkyl dimethyl hydroxypropyl phosphate betaine, and uniformly mixing to obtain the color fixing solution.
By adopting the technical scheme, firstly, reacting diethylenetriamine with epoxy chloropropane to obtain an amine and epoxy chloropropane condensate, then adding a quaternary ammonium salt etherifying agent for etherification, introducing quaternary ammonium salt base into molecules of the color fixing agent to increase the cationic property of the color fixing agent, and obtaining a quaternized reactive color fixing agent; and finally, adding sodium hexametaphosphate and alkyl dimethyl hydroxypropyl phosphate betaine to improve the compatibility and stability of the color fixing agent, so that the color fixing agent with stable structural performance is obtained, and the color fixing agent and hydroxyl, amino and other groups in the fiber and dye realize good crosslinking, thereby improving the color fixing effect of the cotton fabric.
Preferably, the linear speeds of the fabric passing through the primary hot-pressing assembly and the secondary pressing assembly are kept consistent, and the linear speeds are both 30-50 m/min.
By adopting the technical scheme, the linear speed of the fabric passing through the first hot pressing assembly and the second pressing assembly determines the time and effect of padding and color fixing of the printed cotton fabric, the linear speed is higher, the cotton fabric cannot be sufficiently fixed, and the color fixing effect is poorer; the linear velocity is lower, and the cotton fabric moisture content reduces fast, is unfavorable for the cross-linking between fixation solution and dyestuff and fibre to combine, and the fixation effect also can receive the influence.
Preferably, the printed cotton fabric is dried at the temperature of 110-120 ℃ for 3-5min in the step S3.
By adopting the technical scheme, the water content of the cotton fabric before color fixation is kept in a proper range, and the improvement of the binding property of the dye and the cotton fabric fiber in the color fixation processing and the color fixation effect of the color fixing agent on the cotton fabric are facilitated.
Preferably, the temperature of the cold water used for washing in the step S5 is 10-20 ℃, and the washing time is 5-10 min; the hot water temperature is 55-60 deg.C, the washing time is 10-15min, the soaping temperature is 90-95 deg.C, and the soaping time is 5-10 min.
After the reactive dye is dyed, washing with water is carried out to remove unfixed dye, chemicals and various impurities on the textile, otherwise, the color fastness, the vividness, the hand feeling and other wearability of the dyed product are affected; the water washing processing not only influences the quality of dyeing products, but also is a processing process with large energy consumption, water consumption and sewage discharge amount, and is directly related to the level of dyeing energy conservation and emission reduction and ecological processing, and even influences whether the dyeing of reactive dyes can be smoothly carried out. By adopting the technical scheme, the fabric is washed by cold water, then by hot water, then by soaping, and then by hot water and cold water, so that on one hand, the precipitates and the unbound dye formed by printing and fixing on the surface of the fabric can be sufficiently removed; on the other hand, the protective agent is beneficial to realizing rapid film forming and coating on the surface of the cotton fabric printing dye, the structural performance of the protective solution after film forming is improved, and the color fixing effect of the cotton fabric is further improved; according to the processing and reagent matching in the cotton fabric printing and color fixing, the corresponding limitation is made on the washing process, the unnecessary water resource waste is reduced, and the low consumption and energy conservation are realized.
Preferably, the setting temperature in the step S5 is 120-130 ℃, and the setting speed is 45-50 m/min.
By adopting the technical scheme, the final color fixing effect of the cotton fabric can be influenced by the setting temperature and the setting speed, and the cotton fabric is set at the temperature and the speed, so that the better color fixing effect is realized.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the method for fixing the color of the cotton fabric by padding is characterized in that the printed cotton fabric passes through a first hot pressing assembly, a first liquid feeding roller in the first hot pressing assembly is coated with a color fixing solution, the color fixing solution can better permeate into the fiber of the cotton fabric by virtue of hot pressing through hot pressing of a first hot pressing roller at the temperature of 75-85 ℃, reactive groups in the color fixing solution can be salified and combined with dye and can be crosslinked with the fiber and hydroxyl, amino and other groups in the dye, so that the dyeing fastness of the cotton fabric is improved;
2. the cotton fabric is fixed in color by the first hot pressing assembly and then passes through the second pressing assembly, a second liquid feeding roller in the second pressing assembly is coated with a protection liquid, and hot pressing is carried out by the second hot pressing roller at the temperature of 55-65 ℃, so that the fastness of the printing dye and the cotton fabric is further deepened, and polydimethylsiloxane, acrylic copolymer, dimethylformamide, carboxymethyl chitosan and water in the protection liquid can act synergistically to form a layer of sealing film on the surface of the cotton fabric, so that the printing dye is sealed by the sealing film, the dyeing fastness of the printing dye is improved, and the antibacterial performance of the cotton fabric is also improved;
3. according to the method, the printed cotton fabric is subjected to primary hot pressing and secondary pressing and fixing treatment by adopting a padding color fixing method, and is matched with a color fixing liquid to penetrate into the cotton fabric for cross-linking color fixing and a protective liquid for sealing a film on the surface of the cotton fabric for protection, so that the color fixing effect of the cotton fabric prepared by the processing technology is greatly improved, and the cotton fabric has good antibacterial performance; the steaming treatment is avoided in the processing process, and the low consumption and energy conservation of the processing are realized.
Detailed Description
Preparation example
Preparation example 1
The preparation example discloses a preparation method of a color fixing solution, which comprises the following steps:
1) adding 150g of diethylenetriamine, 350g of ethylene glycol and 300g of water into a reaction container, starting stirring, heating to 80 ℃, stirring for 10min at a stirring speed of 100r/min, then dropwise adding 350g of epoxy chloropropane, and reacting for 2 h;
2) adding 250g of quaternary ammonium salt etherifying agent, and continuously reacting for 1h at the temperature of 80 ℃;
3) and cooling to 65 ℃, adding 50g of sodium hexametaphosphate and 50g of alkyl dimethyl hydroxypropyl phosphate betaine, and stirring at a stirring speed of 70r/min for 30min to obtain the color fixing solution.
Preparation example 2
The preparation example discloses a preparation method of a color fixing solution, which comprises the following steps:
1) adding 200g of diethylenetriamine, 400g of ethylene glycol and 350g of water into a reaction container, starting stirring, heating to 90 ℃, stirring for 10min at a stirring speed of 130r/min, then dropwise adding 400g of epichlorohydrin, and reacting for 3 h;
2) adding 300g of quaternary ammonium salt etherifying agent, and continuously reacting for 1.5h at the temperature of 90 ℃;
3) and cooling to 70 ℃, adding 70g of sodium hexametaphosphate and 70g of alkyl dimethyl hydroxypropyl phosphate betaine, and stirring at the stirring speed of 70r/min for 30min to obtain the color fixing solution.
Preparation example 3
The preparation example discloses a preparation method of a color fixing solution, which comprises the following steps:
1) adding 175g of diethylenetriamine, 375g of ethylene glycol and 325g of water into a reaction container, starting stirring, heating to 85 ℃, stirring at a stirring speed of 100r/min for 10min, then dropwise adding 375g of epoxy chloropropane, and reacting for 2 h;
2) 275g of quaternary ammonium salt etherifying agent is added, and the reaction is continued for 1 hour at the temperature of 85 ℃;
3) and cooling to 67 ℃, adding 60g of sodium hexametaphosphate and 60g of alkyl dimethyl hydroxypropyl phosphate betaine, and stirring at a stirring speed of 70r/min for 30min to obtain the color fixing solution.
Preparation example 4
The preparation example discloses a preparation method of a protective solution, which comprises the following specific steps: 200g of polydimethylsiloxane, 150g of acrylic copolymer, 50g of dimethylformamide, 130g of carboxymethyl chitosan and 400g of water are mixed and added into a reaction vessel, stirring is started, the temperature is increased to 45 ℃, and stirring is carried out for 15min under the condition of the rotating speed of 1300r/min, so as to obtain the protective solution.
Preparation example 5
The preparation example discloses a preparation method of a protective solution, which comprises the following specific steps: 250g of polydimethylsiloxane, 200g of acrylic copolymer, 80g of dimethylformamide, 170g of carboxymethyl chitosan and 500g of water are mixed and added into a reaction vessel, stirring is started, the temperature is raised to 50 ℃, and stirring is carried out for 15min under the condition of the rotating speed of 1300r/min, so as to obtain the protective solution.
Preparation example 6
The preparation example discloses a preparation method of a protective solution, which comprises the following specific steps: 225g of polydimethylsiloxane, 175g of acrylic copolymer, 65g of dimethylformamide, 150g of carboxymethyl chitosan and 450g of water are mixed and added into a reaction vessel, stirring is started, the temperature is increased to 45 ℃, and stirring is carried out for 15min under the condition of the rotating speed of 1300r/min, so as to obtain the protective solution.
Preparation example 7
The preparation example discloses a preparation method of a protective solution, which is different from the preparation example 4 in that: the polydimethylsiloxane, acrylic copolymer and dimethylformamide were all replaced with equal amounts of water.
Examples
Example 1
Embodiment 1 discloses an energy-saving, low-consumption and steaming-free printing and color fixing process for cotton fabrics, which comprises the following steps:
s1, preparing printing paste:
s1-1, adding 20g of sodium alginate, 5g of nano bentonite, 10g of thickening agent and 465g of water into a stirrer, and stirring at the normal temperature at the speed of 500r/min for 20min to obtain printing paste;
s1-2, mixing 200g of printing paste, 50g of reactive dye, 40g of glycerol, 30g of urea, 20g of dye-resistant salt S, 30g of sodium bicarbonate and 500g of water, adding into a stirrer, and stirring at the normal temperature at the speed of 750r/min for 45min to obtain printing paste;
s2, screen printing is carried out on the cotton fabric by using the prepared printing paste;
s3, printing and drying: drying the printed cotton fabric at 110 ℃ for 5 min;
s4, padding and fixing:
s4-1, enabling the printed and dried cotton fabric to pass through a primary hot pressing assembly at a constant speed of 30m/min, wherein the primary hot pressing assembly comprises a color fixing liquid tank, a first liquid feeding roller fixed in the color fixing liquid tank and a first hot pressing roller fixed right above the first liquid feeding roller; the color fixing solution prepared in preparation example 1 is contained in a color fixing solution tank, and the temperature of a first hot pressing roller is 75 ℃; when the fabric passes through a gap between the first liquid feeding roller and the first hot pressing roller, the first hot pressing roller presses the fabric downwards, and the color fixing liquid coated on the first liquid feeding roller is immersed into the fabric during pressing to realize color fixing;
s4-2, continuously enabling the cotton fabric passing through the primary hot-pressing assembly to pass through a secondary pressing assembly at a constant speed of 30m/min, wherein the secondary pressing assembly comprises a protective liquid tank, a second liquid feeding roller fixed in the protective liquid tank and a second hot-pressing roller fixed right above the second liquid feeding roller; the protective solution prepared in preparation example 4 is contained in the protective solution tank, and the temperature of the second hot-pressing roller is 55 ℃; when the fabric passes through a gap between the second liquid feeding roller and the second hot pressing roller, the second hot pressing roller presses downwards to extrude the fabric, and the protective liquid coated on the second liquid feeding roller is coated on the fabric during extrusion to realize color fixation;
s5, washing and shaping: washing the cotton fabric subjected to padding color fixation by adopting cold water, hot water, soaping, hot water and cold water; the temperature of cold water used for washing is 10 ℃, and the washing time is 5 min; the hot water temperature is 60 ℃, and the washing time is 15 min; soaping temperature is 90 ℃, and soaping time is 10 min; and drying and shaping after washing, wherein the shaping temperature is 120 ℃, and the shaping speed is 45m/min, so that a finished product of the printed cotton fabric is obtained.
Example 2
Embodiment 2 discloses an energy-saving, low-consumption and steaming-free printing and color fixing process for cotton fabrics, which comprises the following steps:
s1, preparing printing paste:
s1-1, adding 30g of sodium alginate, 15g of nano bentonite, 15g of thickening agent and 440g of water into a stirrer, and stirring at the normal temperature at the speed of 500r/min for 23min to obtain printing paste;
s1-2, mixing 250g of printing paste, 70g of reactive dye, 60g of glycerol, 50g of urea, 50g of dye-resistant salt S, 50g of sodium bicarbonate and 600g of water, adding into a stirrer, and stirring at the normal temperature at the speed of 750r/min for 50min to obtain printing paste;
s2, printing: carrying out silk screen printing treatment on the cotton fabric by using the prepared printing paste;
s3, printing and drying: drying the printed cotton fabric at 120 ℃ for 3 min;
s4, padding and fixing color:
s4-1, enabling the printed and dried cotton fabric to pass through a primary hot pressing assembly at a constant speed of 50m/min, wherein the primary hot pressing assembly comprises a color fixing liquid tank, a first liquid feeding roller fixed in the color fixing liquid tank and a first hot pressing roller fixed right above the first liquid feeding roller; the color fixing solution prepared in preparation example 2 is contained in the color fixing solution tank, and the temperature of the first hot pressing roller is 85 ℃; when the fabric passes through a gap between the first liquid feeding roller and the first hot pressing roller, the first hot pressing roller presses the fabric downwards, and the color fixing liquid coated on the first liquid feeding roller is immersed into the fabric during pressing to realize color fixing;
s4-2, continuously enabling the cotton fabric passing through the primary hot-pressing assembly to pass through a secondary pressing assembly at a constant speed at a linear speed of 50m/min, wherein the secondary pressing assembly comprises a protective liquid tank, a second liquid feeding roller fixed in the protective liquid tank and a second hot-pressing roller fixed right above the second liquid feeding roller; the protective solution prepared in preparation example 5 is contained in the protective solution tank, and the temperature of the second hot-pressing roller is 65 ℃; when the fabric passes through a gap between the second liquid feeding roller and the second hot pressing roller, the second hot pressing roller presses downwards to extrude the fabric, and the protective liquid coated on the second liquid feeding roller is coated on the fabric during extrusion to realize color fixation;
s5, washing and shaping: washing the cotton fabric subjected to padding color fixation by adopting cold water, hot water, soaping, hot water and cold water; the temperature of cold water used for washing is 20 ℃, and the washing time is 10 min; the hot water temperature is 65 ℃, and the washing time is 10 min; soaping temperature is 95 ℃, and soaping time is 5 min; and drying and shaping after washing, wherein the shaping temperature is 130 ℃, and the shaping speed is 50m/min, so that a finished product of the printed cotton fabric is obtained.
Example 3
Embodiment 3 discloses an energy-saving, low-consumption and steaming-free printing and color fixing process for cotton fabrics, which comprises the following steps:
s1, preparing printing paste:
s1-1, adding 25g of sodium alginate, 10g of nano bentonite, 12.5g of thickening agent and 452.5g of water into a stirrer, and stirring at the normal temperature at the speed of 500r/min for 20min to obtain printing paste;
s1-2, mixing 225g of printing paste, 60g of reactive dye, 50g of glycerol, 40g of urea, 35g of dye-resistant salt S, 40g of sodium bicarbonate and 550g of water, adding into a stirrer, and stirring at the normal temperature at the speed of 750r/min for 47min to obtain printing paste;
s2, printing: carrying out silk screen printing treatment on the cotton fabric by using the prepared printing paste;
s3, printing and drying: drying the printed cotton fabric at 115 ℃ for 4 min;
s4, padding and fixing:
s4-1, enabling the printed and dried cotton fabric to pass through a primary hot pressing assembly at a constant speed of 40m/min, wherein the primary hot pressing assembly comprises a color fixing liquid tank, a first liquid feeding roller fixed in the color fixing liquid tank and a first hot pressing roller fixed right above the first liquid feeding roller; the color fixing solution prepared in preparation example 3 is contained in the color fixing solution tank, and the temperature of the first hot press roller is 80 ℃; when the fabric passes through a gap between the first liquid feeding roller and the first hot pressing roller, the first hot pressing roller presses the fabric downwards, and the color fixing liquid coated on the first liquid feeding roller is immersed into the fabric during pressing to realize color fixing;
s4-2, enabling the cotton fabric passing through the primary hot-pressing assembly to continuously pass through a secondary pressing assembly at a constant speed of 40m/min, wherein the secondary pressing assembly comprises a protective liquid tank, a second liquid feeding roller fixed in the protective liquid tank and a second hot-pressing roller fixed right above the second liquid feeding roller; the protective solution prepared in preparation example 6 is contained in the protective solution tank, and the temperature of the second hot-pressing roller is 55 ℃; when the fabric passes through a gap between the second liquid feeding roller and the second hot pressing roller, the second hot pressing roller presses downwards to extrude the fabric, and the protective liquid coated on the second liquid feeding roller is coated on the fabric during extrusion to realize color fixation;
s5, washing and shaping: washing the cotton fabric subjected to padding color fixation by adopting cold water, hot water, soaping, hot water and cold water; the temperature of cold water used for washing is 15 ℃, and the washing time is 7 min; the hot water temperature is 63 ℃, and the washing time is 13 min; soaping temperature is 90 ℃, and soaping time is 10 min; and drying and shaping after washing, wherein the shaping temperature is 125 ℃, and the shaping speed is 47m/min, so that a finished product of the printed cotton fabric is obtained.
Comparative example
Comparative example 1
An energy-saving low-consumption steaming-free printing and color fixing process for cotton fabrics is different from that of the embodiment 1 in that: in step S4, the printed and dried cotton fabric passes through the primary hot pressing assembly only and does not pass through the secondary press-fixing assembly.
Comparative example 2
An energy-saving low-consumption steaming-free printing and color fixing process for cotton fabrics is different from that of the embodiment 1 in that: in step S4-2, the protection solution tank does not contain the protection solution.
Comparative example 3
An energy-saving low-consumption steaming-free printing and color fixing process for cotton fabrics is different from that of the embodiment 1 in that: in step S4-2, a multifunctional color fixing agent ECO supplied by Shaoxing-only textile auxiliary force suppliers is contained in a protective liquid tank.
Comparative example 4
An energy-saving low-consumption steaming-free printing and color fixing process for cotton fabrics is different from that of the embodiment 1 in that: in step S4-2, the protective solution prepared in preparation example 7 was used.
Comparative example 5
An energy-saving low-consumption steaming-free printing and color fixing process for cotton fabrics is different from that of the embodiment 1 in that: in the step S4-1, an aldehyde-free color fixing agent SR-GF of Shanghai deep volume chemical technology Limited is placed in a color fixing liquid tank.
Comparative example 6
A printing and color fixing process for cotton fabric is different from the process of the embodiment 1 in that: in step S4-2, the cotton fabric is sent to a long-ring steamer and steamed for 10min at 102 ℃ by adopting saturated steam.
Performance test
1. Color fastness to washing: reference is made to GB/T3921.1-1997 colour fastness to washing in the textile colour fastness test: the cotton fabrics obtained in examples 1 to 3 and comparative examples 1 to 6 of the present application were tested by the test method of test 1 "using a SW 212 type colorfastness to washing tester.
2. Color fastness to perspiration: the cotton fabrics obtained in examples 1-3 and comparative examples 1-6 of the present application were tested with reference to the test method in GB/T3922-1995, test method for color fastness to perspiration of textiles, using an ATLAS-150 light fastness tester.
3. Fastness to rubbing: the cotton fabrics obtained in examples 1-3 and comparative examples 1-6 of the present application were tested by reference to the test method in GB/T3920-1997 crockfastness test for textile color fastness, using a Y571A crockfastness machine.
4. The bacteriostasis rate is as follows: the cotton fabrics prepared in the examples 1-3 and the comparative examples 1-6 of the application are tested for antibacterial performance by referring to a test method in GB/T20944.3-2008, evaluation of antibacterial performance of textiles, part 3, namely an oscillation method.
The data for the performance measurements of the cotton fabrics made in examples 1-3 and comparative examples 1-6 of the present application are detailed in table 1.
TABLE 1
According to the performance detection data of the examples 1-3 and the comparative example 6 in the table 1, the comparative example 6 adopts a conventional steaming color fixing method, the grades of the color fastness to washing, the color fastness to perspiration and the color fastness to rubbing of the printed cotton fabric prepared by the comparative example 6 are averagely 3-4 grades, the grades of the color fastness to washing, the color fastness to perspiration and the color fastness to rubbing of the cotton fabric prepared by the printing and color fixing process of the examples 1-3 are all 4-5 grades, the color fastness of the cotton fabric prepared by the examples 1-3 is improved by 1-2 grades compared with the color fastness of the common steaming process, the color fixing effect of the cotton fabric is obviously improved, the bacteriostasis rate of the cotton fabric prepared by the examples 1-3 is 85% -90%, and the bacteriostasis effect is outstanding.
In the embodiment 1-3 of the application, a padding color fixing method is adopted, a cotton fabric printed with printing paste is firstly passed through a primary hot pressing assembly on a padding machine, under the extrusion of a first hot pressing roller and a first upper liquid roller, a color fixing solution is immersed into the cotton fabric, and a reaction group in the color fixing solution reacts with a dye and fabric fibers to generate bonding, so that primary color fixing of the printed cotton fabric is realized; continue to pass through the secondary with cotton fabric and press solid subassembly again, under the extrusion of second hot press roller and second upper liquid roller, protection liquid dip-coats on cotton fabric, protection liquid can form one deck pad seal on printed cotton fabric surface, the pad seal lid is on printed cotton fabric surface, and then realize the fixation to printed cotton fabric top layer, under the mating action of primary hot pressing and secondary press solid and fixation liquid and protection liquid, printed cotton fabric's fixation processing has been realized, steaming process has not only been removed from, reduce the steaming energy consumption, promote production efficiency, the energy-conserving low-loss of technology has been realized, and compare in ordinary steaming process and obtained better fixation effect and antibacterial effect.
Compared with the examples 1-3, the processing treatment of fixing color by a secondary padding protective solution is omitted in the comparative example 1, the grade of the color fastness to washing and the grade of the color fastness to rubbing of the cotton fabric prepared in the comparative example 1 are only 3, the grade of the color fastness to perspiration is 2-3, the grade of the color fastness to perspiration of the prepared printed cotton fabric is obviously reduced, and the color fixing effect is poor; the bacteriostasis rate is 58.3 percent, and no good bacteriostasis effect exists; comparison of the data of the comparative example 1 and the data of the examples 1 to 3 fully illustrates that the processing technology of the secondary pressing and solid-dipping protection solution has important influence on the color fastness and the antibacterial performance of the prepared cotton fabric, the secondary pressing and the sealing and color fixation of the protection solution are lost, the color fixation effect of the printed cotton fabric is greatly reduced, and the antibacterial effect is poor.
Although the printed cotton fabric in the comparative example 2 passes through the secondary press-fixing component but is not subjected to dip dyeing by the protection liquid, the color fastness grade of the cotton fabric prepared in the comparative example 2 is slightly improved in the dry friction treatment of the rubbing fastness compared with that of the comparative example 1, but the integral color fastness grade is lower, and the color fixing effect is poorer; the bacteriostasis rate is 58.7%, and compared with comparative example 1, the bacteriostasis performance is not improved basically; the inventor analysis, the cotton fabric has realized the secondary extrusion through the secondary pressure solid subassembly, the secondary extrusion in-process has further promoted the effect of immersing of fixation liquid to the cotton fabric, has strengthened the reaction between fixation liquid and the cotton fabric and has connected for the fixation effect promotes slightly, but does not have the membrane forming cover of protection liquid, and the stamp dyestuff is difficult to stabilize on the cotton fabric in acid-base solution treatment, and the fixation effect is unsatisfactory, and the antibacterial effect that the protection liquid brought also disappears thereupon.
The protection solution prepared by the method is replaced by a commercially available color fixing solution in a comparative example 3, the protection solution prepared by a preparation example 7 is adopted in the comparative example 4, the color fastness grade of the printed cotton fabric prepared by the comparative examples 3 and 4 is lower, the bacteriostasis rate of the comparative example 3 is lower, the bacteriostasis rate of the comparative example 4 is improved compared with that of the comparative example 1, but the bacteriostasis rate of the examples 1-3 cannot be reached, and the comparative examples 3 and 4 show that the replacement of the protection solution or the change of the components in the protection solution can affect the structural performance of the protection solution, so that the protection solution cannot fully exert the gain effect on the color fixing and bacteriostasis of the fabric.
Comparative example 5 the color fixing solution prepared in the application is replaced by a commercially available color fixing solution, and the color fastness grade of the printed cotton fabric prepared in comparative example 5 is slightly improved compared with that of comparative example 1, but the color fixing effect of examples 1-3 cannot be achieved.
The data of comparative examples 3-5 further illustrate that the physical processing of primary hot pressing and secondary pressing also needs to be matched with the color fixing solution and the protective solution prepared by the application for processing together, and the color fixing effect of the printed cotton fabric can be improved by the synergistic multi-phase cooperation of secondary extrusion and the generation between the special color fixing solution and the special protective solution.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. An energy-saving low-consumption steaming-free printing and color fixing process for cotton fabrics is characterized in that: the method comprises the following steps:
s1, preparing printing paste: the printing paste comprises the following components in parts by mass: 20-25 parts of printing paste, 5-7 parts of reactive dye, 4-6 parts of glycerol, 3-5 parts of urea, 2-5 parts of dye-resistant salt S, 3-5 parts of sodium bicarbonate and 50-60 parts of water; the printing paste comprises the following components in percentage by weight: 4-6% wt of sodium alginate, 1-3% wt of nano bentonite, 2-3% wt of thickening agent and the balance of water;
s2, printing: printing the cotton fabric by using the prepared printing paste;
s3, printing and drying: drying the printed cotton fabric;
s4, padding and fixing:
s4-1, enabling the printed and dried cotton fabric to pass through a primary hot pressing assembly, wherein the primary hot pressing assembly comprises a color fixing liquid tank, a first liquid feeding roller fixed in the color fixing liquid tank and a first hot pressing roller fixed right above the first liquid feeding roller; a gap for cotton fabrics to pass through is reserved between the first liquid feeding roller and the first hot pressing roller, and the temperature of the first hot pressing roller is 75-85 ℃; the color fixing liquid tank is filled with color fixing liquid, and the raw materials of the color fixing liquid comprise the following components in parts by mass: 15-20 parts of diethylenetriamine, 35-40 parts of epoxy chloropropane, 35-40 parts of ethylene glycol, 25-30 parts of a quaternary ammonium salt etherifying agent, 5-7 parts of sodium hexametaphosphate, 5-7 parts of alkyl dimethyl hydroxypropyl phosphate betaine and 30-35 parts of water;
s4-2, continuously enabling the cotton fabric passing through the primary hot-pressing assembly to pass through a secondary pressing assembly, wherein the secondary pressing assembly comprises a protective liquid tank, a second liquid feeding roller fixed in the protective liquid tank and a second hot-pressing roller fixed right above the second liquid feeding roller; a gap for cotton fabrics to pass through is reserved between the second liquid feeding roller and the second hot pressing roller, and the temperature of the second hot pressing roller is 55-65 ℃; the protective liquid tank is filled with protective liquid, and the protective liquid comprises the following components in parts by mass: 20-25 parts of polydimethylsiloxane, 15-20 parts of acrylic copolymer, 5-8 parts of dimethylformamide, 13-17 parts of carboxymethyl chitosan and 40-50 parts of water;
s5, washing and shaping: and (3) washing the cotton fabric subjected to padding color fixation by adopting cold water, hot water, soaping, hot water and cold water, and drying and shaping after washing to obtain a finished product of the printed cotton fabric.
2. The energy-saving low-consumption steaming-free printing and color fixing process for the cotton fabric according to claim 1, which is characterized in that: the protective solution comprises the following raw materials in parts by mass: 22.5 parts of polydimethylsiloxane, 17.5 parts of acrylic copolymer, 6.5 parts of dimethylformamide, 15 parts of carboxymethyl chitosan and 45 parts of water.
3. The energy-saving low-consumption steaming-free printing and color fixing process for the cotton fabric according to claim 1, which is characterized in that: the preparation method of the protective solution in the step S4-2 is as follows: uniformly mixing polydimethylsiloxane, acrylic copolymer, dimethylformamide, carboxymethyl chitosan and water at 45-50 ℃ to obtain the protective solution.
4. The energy-saving low-consumption steaming-free printing and color fixing process for the cotton fabric according to claim 1, which is characterized in that: the preparation method of the color fixing solution in the step S4-1 comprises the following steps:
1) mixing diethylenetriamine, ethylene glycol and water uniformly; heating to 80-90 ℃, dropwise adding epoxy chloropropane, and reacting for 2-3 h;
2) adding quaternary ammonium salt etherifying agent, and continuously reacting for 1-1.5h at the temperature of 80-90 ℃;
3) and cooling to 65-70 ℃, adding sodium hexametaphosphate and alkyl dimethyl hydroxypropyl phosphate betaine, uniformly mixing, standing and cooling to obtain the color fixing solution.
5. The energy-saving low-consumption steaming-free printing and color fixing process of the cotton fabric according to claim 1 or 2, characterized in that: the linear speeds of the fabric passing through the primary hot-pressing assembly and the secondary pressing assembly are kept consistent, and the linear speeds are both 30-50 m/min.
6. The energy-saving low-consumption steaming-free printing and color fixing process of the cotton fabric according to claim 1 or 2, characterized in that: in the step S3, the printed cotton fabric is dried at the temperature of 110-120 ℃ for 3-5 min.
7. The energy-saving low-consumption steaming-free printing and color fixing process of the cotton fabric according to claim 1 or 2, characterized in that: the temperature of cold water used for washing in the step S5 is 10-20 ℃, and the washing time is 5-10 min; the hot water temperature is 55-60 deg.C, the washing time is 10-15min, the soaping temperature is 90-95 deg.C, and the soaping time is 5-10 min.
8. The energy-saving low-consumption steaming-free printing and color fixing process of the cotton fabric according to claim 1 or 2, characterized in that: the setting temperature in the step S5 is 120-130 ℃, and the setting speed is 45-50 m/min.
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| CN111945446A (en) * | 2020-08-27 | 2020-11-17 | 多恩生物科技有限公司 | Environment-friendly hydrophilic color fixing agent for cotton and preparation method thereof |
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| CN115726195A (en) * | 2022-10-31 | 2023-03-03 | 广东康派环创科技有限公司 | Yarn for thermal sublimation printing, thermal sublimation printing woven label and preparation method thereof |
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