Fabric cleaning printing and dyeing process

Abstract

The invention relates to the technical field of fabric processing, and particularly discloses a fabric cleaning, printing and dyeing process which comprises the following steps: S1, a pretreatment procedure; step S2, dyeing; s3, pigment printing; step S4, after treatment; the modified dyeing sizing agent and the functional adhesive are added, fumaric acid contained in the modified dyeing sizing agent not only can prevent dye particle aggregation and promote dye dispersion by changing dye molecule charge distribution and improving dye hydrophilicity, but also can generate chemical cross-linking with methyl allyl polyoxyethylene ether, so that the dyeing effect is improved. The functional adhesive is prepared from chitosan, 5-hydroxymethylfurfural and citric acid through multi-step chemical reaction, and the prepared functional adhesive contains a chitosan structure, a Schiff base structure and a citric acid structure and can play a role in cooperation with the modified dyeing slurry to jointly improve the dye-uptake rate and the color fastness of the polylactic acid fabric.

Description

Technical Field

[0001] This application relates to the technical field of fabric processing, and more specifically, it relates to a fabric cleaning and dyeing process. Background Art

[0002] Polylactic acid fiber is derived from renewable resources. Using starch-containing agricultural products such as corn, wheat, and sugar beets as raw materials, after fermentation to produce lactic acid, and then through polycondensation and melt spinning, it has broad prospects in the fields of environmental protection textiles, sportswear, medical supplies, etc. due to its renewable, degradable, low-carbon and comfortable characteristics.

[0003] However, polylactic acid fiber for textiles itself has crystallinity and is not easily swollen in water. Therefore, under normal pressure, the color of polylactic acid fiber is relatively light, and it is prone to uneven dyeing. At the same time, its high-temperature resistance ability is poor, and it is not suitable for high-temperature high-pressure dyeing. In addition, most disperse dyes are not suitable for dyeing PLA fabrics.

[0004] Based on the above statements, this application provides a fabric cleaning and dyeing process. Summary of the Invention

[0005] In order to solve the problems mentioned in the above background art, this application provides a fabric cleaning and dyeing process.

[0006] A fabric cleaning and dyeing process includes the following steps:

[0007] Step S1, pretreatment process: The fabric is sequentially subjected to enzyme treatment, bleaching, and shaping to obtain a shaped fabric;

[0008] Step S2, dyeing: The shaped fabric is subjected to primary dyeing and secondary dyeing to obtain a secondary dyed fabric;

[0009] Step S3, pigment printing: Using a mixed solution a of printing pigment and functionalized binder, print the secondary dyed fabric, control the printing thickness to be 25 - 35 μm, and the printing speed to be 25 - 35 m / min, and then perform baking treatment to obtain a preliminary product. Among them, in the mixed solution a, the mass ratio of the pigment to the functionalized binder is 1:2.6 - 3.2;

[0010] Step S4, post-treatment: Coat the surface of the preliminary product with an antibacterial softening finishing agent, control the coating temperature to be 110 - 120 °C, and the speed of the coating machine to be maintained at 25 - 35 yards per minute, and then perform drying treatment.

[0011] Preferably, in the step S3, the printing pigment is gardenia yellow or curcumin.

[0012] Preferably, in the step S3, the baking temperature is 120 - 130 °C, and the baking time is 3 - 5 min.

[0013] Preferably, in step S4, the total coating thickness is 6 - 10 μm.

[0014] Preferably, in the said step S4, the antibacterial and soft finishing agent is G811 or REWOQUAT WE28SH.

[0015] Preferably, the specific steps of the enzyme treatment are as follows:

[0016] Immerse the fabric in the enzyme treatment solution, control the bath ratio at 1:20 - 24, treat at 55 - 65 °C for 10 s, perform cold pad-batch for 20 - 24 h, take out and wash, to obtain the enzyme-treated fabric; wherein, the enzyme treatment solution is prepared from α-amylase, scouring penetrant, chelating dispersant and deionized water in a mass ratio of 25 - 30:15 - 20:5 - 7:1000.

[0017] Preferably, the scouring penetrant is scouring penetrant CNX or scouring penetrant JFC-2.

[0018] Preferably, the chelating dispersant is chelating dispersant VE or chelating dispersant ZJ-CTW.

[0019] Preferably, the specific steps of the bleaching are as follows:

[0020] Place the enzyme-treated fabric in the bleaching solution, control the bath ratio at 1:26 - 30, treat at 60 - 70 °C for 26 - 42 min and take out, wash several times with cold and hot water in sequence, adjust the pH to neutral, stentering, drying, to obtain the bleached fabric, wherein, the bleaching solution is mixed from hydrogen peroxide, oxygen bleaching stabilizer, sodium bicarbonate and deionized water in a mass ratio of 5 - 8:2 - 4:0.2 - 0.6:10000.

[0021] Preferably, the temperature of the hot water is 75 - 85 °C.

[0022] Preferably, the temperature of the setting is 125 - 135 °C, the setting time is 20 - 30 s, and the vehicle speed is 25 - 30 m / min.

[0023] Preferably, the oxygen bleaching stabilizer is oxygen bleaching stabilizer NCS-PB or oxygen bleaching stabilizer One.

[0024] Preferably, the dyeing process specifically includes the following steps:

[0025] Step A1, primary dyeing: Immerse the shaped fabric into the mixed solution b of the modified dyeing slurry aqueous solution 1, allylmethoxypolyethylene glycol ether, and tert-butyl hydroperoxide, pad, pre-dry, bake, wash with water, and dry to obtain the primary dyed fabric. Among them, the bath ratio of the shaped fabric to the mixed solution b is 1:16 - 22. In the mixed solution b, the mass ratio of the modified dyeing slurry aqueous solution 1, allylmethoxypolyethylene glycol ether, and tert-butyl hydroperoxide is 16:1.4 - 1.8:0.16 - 0.22. The mass concentration of the modified dyeing slurry aqueous solution 1 is 12 - 14%. The initial temperature of the mixed solution b is 36 - 48°C, the heating rate is 1 - 2°C / min, and the pH is controlled at 5 - 6;

[0026] Step A2, secondary dyeing: Immerse the primary dyed fabric into the mixed solution c of the modified dyeing slurry aqueous solution 2 and the fixing agent, pad, pre-dry, bake, wash with water, and dry to obtain the secondary dyed fabric. Among them, the mass ratio of the primary dyed fabric to the mixed solution c is 1:22 - 26. In the mixed solution c, the mass ratio of the modified dyeing slurry aqueous solution 2 and the fixing agent is 10:1.5 - 2.5. The mass concentration of the modified dyeing slurry aqueous solution 2 is 8 - 10%. The dosage of the fixing agent is 20 - 24 g / L. The initial temperature of the mixed solution b is 40 - 46°C, the heating rate is 2 - 3°C / min, the dyeing temperature is 65 - 84°C, and the dyeing time is 35 - 45 min.

[0027] Preferably, in the step A1, the padding is two-bath two-padding. The specific operation is as follows: Pass the shaped fabric through a padding mangle for padding. The impregnation time is 35 - 45 min, the padding pressure is 0.1 - 0.3 MPa, the liquor pickup is 70 - 80%. The pre-drying temperature is 75 - 81°C, the time is 5 - 10 min, the baking temperature is 98 - 106°C, the time is 4 - 8 min, and the drying temperature is 45 - 55°C.

[0028] Preferably, the fixing agent is fixing agent Y.

[0029] Preferably, in the step A2, the padding is two-bath two-padding. The specific operation is as follows: Pass the shaped fabric through a padding mangle for padding. The impregnation time is 32 - 40 min, the padding pressure is 0.24 - 0.28 MPa, the liquor pickup is 72 - 78%. The pre-drying temperature is 76 - 82°C, the time is 6 - 12 min, the baking temperature is 92 - 100°C, the time is 3 - 5 min.

[0030] Preferably, the functionalized binder is prepared by the following steps:

[0031] Chitosan was dissolved in acetic acid solution, anhydrous ethanol was added, and the mixture was stirred evenly. 5-Hydroxymethylfurfural was added, and the mixture was stirred and reacted at 62 - 64 °C for 8 - 10 h. After the reaction, it was cooled to room temperature, sodium borohydride was added, and the mixture was stirred and reacted for 12 - 14 h. The pH was adjusted to neutral, and then centrifuged, washed, and dried to obtain hydroxymethylated chitosan. The hydroxymethylated chitosan was added to acetic acid solution, ultrasonically dispersed evenly, citric acid and p-toluenesulfonic acid were added, and the temperature was raised to 60 - 70 °C, and the mixture was continuously stirred and reacted for 14 - 16 h. Then centrifuged, and the precipitate was washed and dried to obtain the functionalized adhesive. Among them, the mass ratio of chitosan, acetic acid solution, anhydrous ethanol, 5-hydroxymethylfurfural and sodium borohydride is 0.3 - 0.5: 30 - 40: 50 - 60: 0.16 - 0.20: 0.1, and the mass ratio of hydroxymethylated chitosan, acetic acid solution, citric acid and p-toluenesulfonic acid is 0.5: 40 - 50: 0.22 - 0.36: 0.01 - 0.03. First, 5-hydroxymethylfurfural was used to modify chitosan (the reaction between amino group and aldehyde group), introducing hydroxymethyl and carboxyl groups onto the chitosan molecule, that is, hydroxymethylated chitosan. Then, an esterification reaction occurred between hydroxymethyl and the carboxyl group on citric acid to obtain the functionalized adhesive.

[0032] Preferably, the mass fraction of the acetic acid solution is 2 - 6%.

[0033] Preferably, the modified dyeing sizing agent in step A1 and step A2 is prepared by the following method:

[0034] 4 - 6 parts by weight of disperse dye, 0.8 - 1.2 parts by weight of emulsifier, 2 - 4 parts of calcium nitrate, and 2 - 4 parts of sodium carbonate were added to 140 - 180 parts by weight of propylene glycol aqueous solution, and the pH value was adjusted to 4.1 - 4.5 with mixed acid, and stirred evenly to obtain the modified dyeing sizing agent.

[0035] Preferably, the disperse dye is at least one of disperse red, disperse blue, disperse yellow, disperse purple, and disperse orange.

[0036] Preferably, the emulsifier is OP - 10.

[0037] Preferably, the mixed acid includes formic acid and fumaric acid with a mass ratio of 1: 4 - 6.

[0038] In summary, the present application has the following beneficial effects:

[0039] In order to improve the dye uptake rate and color fastness of polylactic acid fabrics, this application starts from two aspects. One is to add a modified dyeing sizing agent in the dyeing process. The fumaric acid contained in this modified dyeing sizing agent can not only prevent dye particles from aggregating and promote dye dispersion by changing the charge distribution of dye molecules and increasing the hydrophilicity of dyes. At the same time, it can also chemically crosslink with methallyl polyoxyethylene ether, improving the dye uptake rate and color fastness of polylactic acid fabrics. The other is to add a functional binder, which is prepared by multi-step chemical reactions from chitosan, 5-hydroxymethylfurfural, and citric acid. The prepared functional binder contains chitosan structure, Schiff base structure, and citric acid structure. The hydroxyl groups and amino groups contained in the chitosan structure can form multiple hydrogen bond interactions with the hydroxyl groups on the citric acid structure. The Schiff base structure has a crosslinked network structure. Introducing it into the printing and dyeing process of polylactic acid fabrics can cooperate with the modified dyeing sizing agent to jointly improve the dye uptake rate and color fastness of polylactic acid fabrics. Detailed implementation manners

[0040] To make the implementation manners of this application easier to understand, the following will specifically illustrate this application with specific examples. These examples are only illustrative and are not limited to the application scope of this application.

[0041] The fabrics involved in the application are all PLA / cellulose blended fabrics produced by Huafang Co., Ltd.

[0042] The following further details this application with examples and comparative examples.

[0043] Preparation Examples 1-3 and Comparative Preparation Example 1 provide the preparation methods of the modified dyeing sizing agent.

[0044] Preparation Example 1

[0045] This preparation example provides a modified dyeing sizing agent and its preparation method, including the following steps:

[0046] Add 4 parts by weight of Disperse Red, 0.8 parts by weight of OP-10, 2 parts of calcium nitrate, and 2 parts of sodium carbonate to 140 parts by weight of propylene glycol aqueous solution. Adjust the pH value to 4.1 with a mixed acid, and stir at a speed of 650 rpm for 20 min until uniform to obtain the modified dyeing sizing agent, where the mixed acid includes formic acid and fumaric acid with a mass ratio of 1:4.

[0047] Preparation Example 2

[0048] This preparation example provides a modified dyeing sizing agent and its preparation method, including the following steps:

[0049] Add 5 parts by weight of Disperse Blue, 1.0 part by weight of OP-10, 3 parts of calcium nitrate, and 3 parts of sodium carbonate to 160 parts by weight of an aqueous propylene glycol solution. Adjust the pH value to 4.3 with a mixed acid, and stir for 24 min at a rotation speed of 700 rpm until uniform to obtain a modified dyeing paste. Among them, the mixed acid includes formic acid and fumaric acid with a mass ratio of 1:5.

[0050] Preparation Example 3

[0051] This preparation example provides a modified dyeing paste and a preparation method thereof, including the following steps:

[0052] Add 6 parts by weight of Disperse Yellow, 1.2 parts by weight of OP-10, 4 parts of calcium nitrate, and 4 parts of sodium carbonate to 180 parts by weight of an aqueous propylene glycol solution. Adjust the pH value to 4.5 with a mixed acid, and stir for 28 min at a rotation speed of 750 rpm until uniform to obtain a modified dyeing paste. Among them, the mixed acid includes formic acid and fumaric acid with a mass ratio of 1:6.

[0053] Comparative Preparation Example 1

[0054] This comparative preparation example provides a modified dyeing paste and a preparation method thereof, including the following steps:

[0055] Add 4 parts by weight of Disperse Red, 0.8 part by weight of OP-10, 2 parts of calcium nitrate, and 2 parts of sodium carbonate to 140 parts by weight of an aqueous propylene glycol solution. Adjust the pH value to 4.1 with a mixed acid, and stir for 20 min at a rotation speed of 650 rpm until uniform to obtain a modified dyeing paste. Among them, the mixed acid includes formic acid and ferulic acid with a mass ratio of 1:4.

[0056] Preparation Examples 4-6 and Comparative Preparation Examples 2-3 provide preparation methods for functional adhesives.

[0057] Preparation Example 4

[0058] This preparation example provides a preparation method for a functional adhesive, and the preparation method for the functional adhesive includes the following steps:

[0059] Chitosan was dissolved in an acetic acid solution with a mass fraction of 2%, anhydrous ethanol was added, and the mixture was stirred at 700 rpm for 20 min until homogeneous. 5-Hydroxymethylfurfural was added, and the reaction was stirred at 62 °C for 8 h. After the reaction was completed, it was cooled to room temperature, sodium borohydride was added, the rotation speed was kept unchanged, and the reaction was continued to stir for 12 h. The pH was adjusted to neutral, the precipitate was collected by centrifugation, washed 3 times with anhydrous ethanol and deionized water, and dried at 60 °C to constant weight to obtain hydroxymethylated chitosan. The hydroxymethylated chitosan was added to an acetic acid solution with a mass fraction of 2%, ultrasonically dispersed evenly, the ultrasonic frequency was controlled at 35 kHz, and the ultrasonic power was 500 w. The ultrasonic time was 30 min. Citric acid and p-toluenesulfonic acid were added, and the temperature was raised to 60 °C. The reaction was stirred at 760 rpm for 14 h, centrifuged, and the precipitate was washed 3 times with anhydrous ethanol and deionized water, and dried at 55 °C to constant weight to obtain a functionalized adhesive. Among them, the mass ratio of chitosan, acetic acid solution, anhydrous ethanol, 5-hydroxymethylfurfural and sodium borohydride was 0.3:30:50:0.16:0.1, and the mass ratio of hydroxymethylated chitosan, acetic acid solution, citric acid and p-toluenesulfonic acid was 0.5:40:0.22:0.01.

[0060] Preparation Example 5

[0061] This preparation example provides a method for preparing a functionalized adhesive. The method for preparing the functionalized adhesive includes the following steps:

[0062] Chitosan was dissolved in an acetic acid solution with a mass fraction of 4%, anhydrous ethanol was added, and the mixture was stirred at 720 rpm for 22 min until homogeneous. 5-Hydroxymethylfurfural was added, and the reaction was stirred at 63 °C for 9 h. After the reaction was completed, it was cooled to room temperature, sodium borohydride was added, and the mixture was stirred for 13 h. The pH was adjusted to neutral, the precipitate was collected by centrifugation, washed 4 times with anhydrous ethanol and deionized water, and dried at 65 °C to constant weight to obtain hydroxymethylated chitosan. The hydroxymethylated chitosan was added to an acetic acid solution with a mass fraction of 4%, ultrasonically dispersed evenly, the ultrasonic frequency was controlled at 40 kHz, and the ultrasonic power was 550 w. The ultrasonic time was 24 min. Citric acid and p-toluenesulfonic acid were added, and the temperature was raised to 65 °C. The reaction was stirred at 780 rpm and continued to stir for 15 h, centrifuged, and the precipitate was washed 4 times with anhydrous ethanol and deionized water, and dried at 60 °C to constant weight to obtain a functionalized adhesive. Among them, the mass ratio of chitosan, acetic acid solution, anhydrous ethanol, 5-hydroxymethylfurfural and sodium borohydride was 0.4:35:55:0.18:0.1, and the mass ratio of hydroxymethylated chitosan, acetic acid solution, citric acid and p-toluenesulfonic acid was 0.5:45:0.29:0.02.

[0063] Preparation Example 6

[0064] This preparation example provides a functionalized adhesive. The method for preparing the functionalized adhesive includes the following steps:

[0065] Chitosan was dissolved in an acetic acid solution with a mass fraction of 6%, anhydrous ethanol was added, and the mixture was stirred at 740 rpm for 24 min until homogeneous. 5-Hydroxymethylfurfural was added, and the reaction was stirred at 64 °C for 10 h. After the reaction, it was cooled to room temperature, sodium borohydride was added, and the mixture was stirred for 14 h. The pH was adjusted to neutral with 0.4 M aqueous sodium hydroxide solution, and the precipitate was collected by centrifugation, washed 5 times with anhydrous ethanol and deionized water, and dried to constant weight at 70 °C to obtain hydroxymethylated chitosan. The hydroxymethylated chitosan was added to an acetic acid solution with a mass fraction of 6%, ultrasonically dispersed uniformly, the ultrasonic frequency was controlled at 45 kHz, the ultrasonic power was 600 w, the ultrasonic time was 28 min, citric acid and p-toluenesulfonic acid were added, the temperature was raised to 70 °C, and the reaction was stirred at 800 rpm for 16 h. After centrifugation, the precipitate was washed 5 times with anhydrous ethanol and deionized water and dried to constant weight at 65 °C to obtain the functionalized adhesive. Among them, the mass ratio of chitosan, acetic acid solution, anhydrous ethanol, 5-hydroxymethylfurfural and sodium borohydride was 0.5:40:60:0.20:0.1, and the mass ratio of hydroxymethylated chitosan, acetic acid solution, citric acid and p-toluenesulfonic acid was 0.5:50:0.36:0.03.

[0066] Comparative Preparation Example 2

[0067] This comparative preparation example provides a functionalized adhesive, and the preparation method of the functionalized adhesive includes the following steps:

[0068] Chitosan was dissolved in an acetic acid solution with a mass fraction of 2%, anhydrous ethanol was added, and the mixture was stirred at 700 rpm for 20 min until homogeneous. 5-Hydroxymethyl-2-furoic acid was added, and the reaction was stirred at 62 °C for 8 h. After the reaction, it was cooled to room temperature, sodium borohydride was added, the rotation speed was maintained unchanged, and the reaction was continued to stir for 12 h. The pH was adjusted to neutral, the precipitate was collected by centrifugation, washed 3 times with anhydrous ethanol and deionized water, and dried to constant weight at 60 °C to obtain hydroxymethylated chitosan. The hydroxymethylated chitosan was added to an acetic acid solution with a mass fraction of 2%, ultrasonically dispersed uniformly, the ultrasonic frequency was controlled at 35 kHz, the ultrasonic power was 500 w, the ultrasonic time was 30 min, citric acid and p-toluenesulfonic acid were added, the temperature was raised to 60 °C, and the reaction was stirred at 760 rpm for 14 h. After centrifugation, the precipitate was washed 3 times with anhydrous ethanol and deionized water and dried to constant weight at 55 °C to obtain the functionalized adhesive. Among them, the mass ratio of chitosan, acetic acid solution, anhydrous ethanol, 5-hydroxymethyl-2-furoic acid and sodium borohydride was 0.3:30:50:0.16:0.1, and the mass ratio of hydroxymethylated chitosan, acetic acid solution, citric acid and p-toluenesulfonic acid was 0.5:40:0.22:0.01.

[0069] Comparative Preparation Example 3

[0070] This comparative preparation example provides a functionalized adhesive and a preparation method thereof, including the following steps:

[0071] Dissolve chitosan in acetic acid solution, add absolute ethanol, stir at a rotation speed of 700 rpm for 20 min until uniform, add 5-hydroxymethylfurfural, stir and react at 62 °C for 8 h. After the reaction is completed, cool to room temperature, add sodium borohydride, maintain the rotation speed unchanged, continue to stir and react for 12 h, adjust the pH to neutral, centrifuge to collect the precipitate, wash it 3 times with absolute ethanol and deionized water, and dry it at 60 °C to constant weight to obtain hydroxymethylated chitosan. Add the hydroxymethylated chitosan to a 2% acetic acid solution by mass fraction, disperse it evenly by ultrasonic wave, control the ultrasonic frequency at 35 kHz, under an ultrasonic power of 500 w, with an ultrasonic time of 30 min, add butyric acid and p-toluenesulfonic acid, heat up to 60 °C, stir and react at a rotation speed of 760 rpm for 14 h, centrifuge, wash the precipitate 3 times with absolute ethanol and deionized water, and dry it at 55 °C to constant weight to obtain the functionalized adhesive. Among them, the mass ratio of chitosan, acetic acid solution, absolute ethanol, 5-hydroxymethylfurfural and sodium borohydride is 0.3:30:50:0.16:0.1, and the mass ratio of hydroxymethylated chitosan, acetic acid solution, butyric acid and p-toluenesulfonic acid is 0.5:40:0.22:0.01.

[0072] Examples 7-9 and Comparative Examples 1-3 provide a fabric cleaning and dyeing process.

[0073] Example 1

[0074] This example provides a fabric cleaning and dyeing process, including the following steps;

[0075] Step S1, pretreatment process: including the following steps:

[0076] Step S11, enzyme treatment: Immerse the fabric in the enzyme treatment solution, control the bath ratio at 1:20, treat it at 55 °C for 10 s and then cold stack for 24 h, take it out and wash it clean to obtain the enzyme-treated fabric; among them, the enzyme treatment solution is prepared from α-amylase, scouring penetrant CNX, chelating dispersant VE and deionized water according to a mass ratio of 25:15:5:1000;

[0077] Step S12, bleaching: Place the enzyme-treated fabric in the bleaching solution, control the bath ratio at 1:26, treat it at 60 °C for 26 min and take it out, wash it 3 times with cold and hot water in sequence, adjust the pH to neutral with a 4% hydrochloric acid aqueous solution by mass fraction, stentering, and dry it at 62 °C to obtain the bleached fabric. Among them, the bleaching solution is mixed by hydrogen peroxide, oxygen bleaching stabilizer NCS-PB, sodium bicarbonate and deionized water according to a mass ratio of 5:2:0.2:10000, and the temperature of the hot water is 75 °C;

[0078] Step S13, shaping: Place the bleached fabric at a temperature of 125°C, a vehicle speed of 25 m / min, and a shaping time of 20 s;

[0079] Step S2, dyeing: including the following steps:

[0080] Step 21, primary dyeing: Immerse the shaped fabric into the mixed solution b of the modified dyeing slurry aqueous solution 1, methyl allyl polyoxyethylene ether, and tert-butyl hydroperoxide prepared in Preparation Example 1, heat up to 64°C, pad, pre-dry, bake, wash 3 times, and dry to obtain the primary dyed fabric. Among them, the bath ratio of the shaped fabric to the mixed solution b is 1:16. In the mixed solution b, the mass ratio of the modified dyeing slurry aqueous solution 1, methyl allyl polyoxyethylene ether, and tert-butyl hydroperoxide is 16:1.4:0.16. The mass concentration of the modified dyeing slurry aqueous solution 1 is 12%. The initial temperature of the mixed solution b is 36°C, the heating rate is 1°C / min, the pH is controlled at 5, and the padding is two-bath two-roll padding. The specific operation is as follows: Pass the shaped fabric through a padding mangle for padding. The impregnation time is 35 min, the padding pressure is 0.1 MPa, and the liquor pick-up rate is 70%. The pre-drying temperature is 75°C and the time is 5 min. The baking temperature is 98°C and the time is 4 min. The drying temperature is 45°C;

[0081] Step 22, secondary dyeing: Immerse the primary dyed fabric into the mixed solution c of the modified dyeing slurry aqueous solution 2 and the fixing agent Y prepared in Preparation Example 1, pad, pre-dry, bake, wash 3 times, and dry at 75°C to obtain the secondary dyed fabric. Among them, the mass ratio of the primary dyed fabric to the mixed solution c is 1:22. In the mixed solution c, the mass ratio of the modified dyeing slurry aqueous solution 2 and the fixing agent Y is 10:1.5. The mass concentration of the modified dyeing slurry aqueous solution 2 is 8%. The dosage of the fixing agent Y is 20 g / L. The initial temperature of the mixed solution c is 40°C, the heating rate is 2°C / min, the dyeing temperature is 65°C, and the dyeing time is 35 min. The padding is two-bath two-roll padding. The specific operation is as follows: Pass the shaped fabric through a padding mangle for padding. The impregnation time is 32 min, the padding pressure is 0.24 MPa, and the liquor pick-up rate is 72%. The pre-drying temperature is 76°C and the time is 6 min. The baking temperature is 92°C and the time is 3 min;

[0082] Step S3, pigment printing: Use the mixed solution a of the pigment printing paste and the functionalized binder prepared in Preparation Example 4 to print the secondary dyed fabric, control the printing thickness to be 25 μm, the printing speed to be 25 m / min, and perform baking treatment to obtain the preliminary product. Among them, the pigment printing paste is gardenia yellow. In the mixed solution a, the mass ratio of gardenia yellow to the functionalized binder is 1:2.6. The baking temperature is 120°C and the baking time is 3 min:

[0083] Step S4, post-finishing: Place Coat the surface of the semi-finished product once, control the total coating thickness to be 6 μm, the coating temperature to be 110 °C, the speed of the coater to be maintained at 25 yards per minute, control the pre-baking temperature to be 84 °C, the time to be 12 min, the baking temperature to be 92 °C, and the time to be 4 min, and that's it.

[0084] Example 2

[0085] This example provides a fabric cleaning and dyeing process, including the following steps: Step S1, pretreatment process: including the following steps:

[0086] Step S11, enzyme treatment: Immerse the fabric in the enzyme treatment solution, control the bath ratio to be 1:22, treat it at 60 °C for 10 s, cold pad-batch for 22 h, take it out and wash it, to obtain the enzyme-treated fabric; among them, the enzyme treatment solution is prepared from α-amylase, scouring penetrant JFC-2, chelating dispersant ZJ-CTW and deionized water according to the mass ratio of 27.5:17.5:6:1000;

[0087] Step S12, bleaching: Place the enzyme-treated fabric in the bleaching solution, control the bath ratio to be 1:28, treat it at 65 °C for 34 min and take it out, wash it 4 times with cold and hot water in sequence, adjust the pH to neutral with a 5% hydrochloric acid aqueous solution, stentering, dry it at 66 °C, to obtain the bleached fabric, among which, the bleaching solution is mixed by hydrogen peroxide, oxygen bleaching stabilizer One, sodium bicarbonate and deionized water according to the mass ratio of 6.5:3:0.4:10000, and the temperature of the hot water is 80 °C;

[0088] Step S13, setting: Place the bleached fabric at a temperature of 130 °C, the vehicle speed is 27.5 m / min, and the setting time is 25 s;

[0089] Step S2, dyeing: including the following steps:

[0090] Step 21, primary dyeing: Immerse the set fabric into the mixed solution b of the modified dyeing slurry aqueous solution 1, methyl allyl polyoxyethylene ether and tert-butyl hydroperoxide prepared in Preparation Example 2, heat it up to 74 °C, pad-roll, pre-bake, bake, wash 4 times, and dry it at 65 °C, to obtain the primary dyed fabric, among which, the bath ratio of the set fabric to the mixed solution b is 1:19, in the mixed solution b, the mass ratio of the modified dyeing slurry aqueous solution 1, methyl allyl polyoxyethylene ether and tert-butyl hydroperoxide is 16:1.6:0.19, the mass concentration of the modified dyeing slurry aqueous solution 1 is 13%, the initial temperature of the mixed solution b is 42 °C, the heating rate is 1.5 °C / min, the pH is controlled to be 5.5, the pad-rolling is two-dip two-roll, the specific operation is: Immerse the set fabric through the padder for pad-rolling, the impregnation time is 40 min, the pad-rolling pressure is 0.2 MPa, the liquor pickup rate is 75%, the pre-baking temperature is 78 °C, the time is 7.5 min, the baking temperature is 102 °C, and the time is 6 min;

[0091] Step 22, secondary dyeing: Immerse the primary dyed fabric in the mixed solution c of the modified dyeing slurry aqueous solution 2 prepared in Preparation Example 2 and the fixing agent Y, pad, pre-dry, bake, wash 4 times, and dry at 80 °C to obtain the secondary dyed fabric. Among them, the bath ratio of the primary dyed fabric to the mixed solution c is 1:24. In the mixed solution c, the mass ratio of the modified dyeing slurry aqueous solution 2 to the fixing agent Y is 10:2.0, the mass concentration of the modified dyeing slurry aqueous solution 2 is 9%, the dosage of the fixing agent Y is 22 g / L, the initial temperature of the mixed solution c is 43 °C, the heating rate is 2.5 °C / min, the dyeing temperature is 74.5 °C, the dyeing time is 40 min, and the padding is two-dip two-roll. The specific operation is as follows: Pass the shaped fabric through the padding mangle for padding. The impregnation time is 36 min, the padding pressure is 0.26 MPa, and the liquor pickup rate is 75%. The pre-drying temperature is 79 °C and the time is 9 min. The baking temperature is 96 °C and the time is 4 min;

[0092] Step S3, pigment printing: Use the mixed solution a of the pigment printing paste and the functionalized binder prepared in Preparation Example 5 to print the secondary dyed fabric. Control the printing thickness to be 30 μm and the printing speed to be 30 m / min, and perform baking treatment to obtain the preliminary product. Among them, the pigment printing paste is curcumin. In the mixed solution a, the mass ratio of curcumin to the functionalized binder is 1:2.9, the baking temperature is 125 °C, and the baking time is 4 min;

[0093] Step S4, after-finishing: Coat the surface of the preliminary product with REWOQUAT WE28SH twice, control the total coating thickness to be 8 μm, the coating temperature to be 115 °C, the speed of the coater to be maintained at 30 yards per minute, control the pre-drying temperature to be 86 °C and the time to be 14 min, and the baking temperature to be 96 °C and the time to be 6 min, then it is ready.

[0094] Example 3

[0095] This example provides a fabric cleaning and printing and dyeing process, including the following steps;

[0096] Step S1, pretreatment process: including the following steps:

[0097] Step S11, enzyme treatment: Immerse the fabric in the enzyme treatment solution, control the bath ratio 1:24, treat at 65 °C for 10 s, cold pad-batch for 24 h, take out and wash, to obtain the enzyme-treated fabric; among them, the enzyme treatment solution is prepared from α-amylase, scouring and penetrating agent CNX, chelating and dispersing agent VE and deionized water according to the mass ratio of 30:20:7:1000;

[0098] Step S12. Bleaching: Place the enzyme-treated fabric in the bleaching solution, control the liquor ratio at 1:30, treat it at 70 °C for 42 min and then take it out. Wash it several times with cold and hot water in sequence, adjust the pH to neutral with a 6% hydrochloric acid aqueous solution by mass, stentering, and dry it at 70 °C to obtain the bleached fabric. Among them, the bleaching solution is prepared by mixing hydrogen peroxide, oxygen bleaching stabilizer NCS-PB, sodium bicarbonate and deionized water according to the mass ratio of 8:4:0.6:10000;

[0099] Step S13. Setting: Place the bleached fabric at a temperature of 135 °C, with a vehicle speed of 30 m / min and a setting time of 30 s;

[0100] Step S2. Dyeing: It includes the following steps:

[0101] Step 21. Primary dyeing: Immerse the set fabric into the mixed solution b of the modified dyeing slurry aqueous solution 1, methyl allyl polyoxyethylene ether and tert-butyl hydroperoxide prepared in Preparation Example 3, pad-roll, pre-dry, bake, wash 5 times, and dry it at 70 °C to constant weight to obtain the primary dyed fabric. Among them, the liquor ratio of the set fabric to the mixed solution is 1:22. In the mixed solution b, the mass ratio of the modified dyeing slurry aqueous solution 1, methyl allyl polyoxyethylene ether and tert-butyl hydroperoxide is 16:1.8:0.22, the mass concentration of the modified dyeing slurry aqueous solution 1 is 14%, the initial temperature of the mixed solution b is 48 °C, the heating rate is 2 °C / min, the pH is controlled at 6, and the pad-roll is two-bath two-roll. The specific operation is as follows: Pass the set fabric through the padding mangle for pad-rolling, the impregnation time is 45 min, the pad-rolling pressure is 0.3 MPa, the liquor pickup rate is 80%, the pre-drying temperature is 81 °C, the time is 10 min, the baking temperature is 106 °C, and the time is 8 min;

[0102] Step 22. Secondary dyeing: Immerse the primary dyed fabric into the mixed solution c of the modified dyeing slurry aqueous solution 2 and the fixing agent Y prepared in Preparation Example 3, pad-roll, pre-dry, bake, wash 5 times, and dry it at 85 °C to obtain the secondary dyed fabric. Among them, the mass ratio of the primary dyed fabric to the mixed solution c is 1:26. In the mixed solution c, the mass ratio of the modified dyeing slurry aqueous solution 2 and the fixing agent Y is 10:2.5, the mass concentration of the modified dyeing slurry aqueous solution 2 is 10%, the dosage of the fixing agent Y is 24 g / L, the initial temperature of the mixed solution c is 46 °C, the heating rate is 3 °C / min, the dyeing temperature is 84 °C, the dyeing time is 45 min, the pad-roll is two-bath two-roll. The specific operation is as follows: Pass the set fabric through the padding mangle for pad-rolling, the impregnation time is 40 min, the pad-rolling pressure is 0.28 MPa, the liquor pickup rate is 78%, the pre-drying temperature is 82 °C, the time is 12 min, the baking temperature is 100 °C, and the time is 5 min;

[0103] Step S3, pigment printing: Using the mixed solution a of pigment printing paste and the functionalized binder prepared in Preparation Example 6, print the secondary dyed fabric, control the printing thickness to be 35 μm, the printing speed to be 35 m / min, and perform baking treatment to obtain a preliminary product. Among them, the pigment printing paste is gardenia yellow. In the mixed solution a, the mass ratio of gardenia yellow to the functionalized binder is 1:3.2, the baking temperature is 130 °C, and the baking time is 5 min;

[0104] Step S4, post-treatment: Apply onto the surface of the preliminary product, apply it 3 times, control the total coating thickness to be 10 μm, the coating temperature to be 120 °C, the speed of the coater to be maintained at 35 yards per minute, control the pre-drying temperature to be 88 °C, the time to be 16 min, and the baking temperature to be 100 °C, the time to be 8 min, then it is okay.

[0105] Comparative Example 1

[0106] This comparative example provides a fabric cleaning and printing process, including the following steps;

[0107] Step S1, pretreatment process: including the following steps:

[0108] Step S11, enzyme treatment: Immerse the fabric in the enzyme treatment solution, control the bath ratio to be 1:20, treat it at 55 °C for 10 s and then cold stack for 24 h, take it out and wash it clean to obtain the enzyme-treated fabric; among them, the enzyme treatment solution is prepared from α-amylase, scouring penetrant CNX, chelating dispersant VE and deionized water according to the mass ratio of 25:15:5:1000;

[0109] Step S12, bleaching: Place the enzyme-treated fabric in the bleaching solution, control the bath ratio to be 1:26, treat it at 60 °C for 26 min and take it out, wash it 3 times with cold and hot water in sequence, adjust the pH to neutral with a 4% hydrochloric acid aqueous solution, stentering, and dry it at 62 °C to obtain the bleached fabric. Among them, the bleaching solution is mixed by hydrogen peroxide, oxygen bleaching stabilizer NCS-PB, sodium bicarbonate and deionized water according to the mass ratio of 5:2:0.2:10000, and the temperature of the hot water is 75 °C;

[0110] Step S13, setting: Place the bleached fabric at a temperature of 125 °C, the vehicle speed is 25 m / min, and the setting time is 20 s;

[0111] Step S2, dyeing: including the following steps:

[0112] Step 21, primary dyeing: Immerse the shaped fabric into the mixed solution b of the modified dyeing slurry aqueous solution 1, methyl allyl polyoxyethylene ether and tert-butyl hydroperoxide prepared in Comparative Preparation Example 1, heat up to 64 °C, pad, pre-dry, bake, wash three times with water, and dry to obtain the primary dyed fabric. Among them, the bath ratio of the shaped fabric to the mixed solution b is 1:16. In the mixed solution b, the mass ratio of the modified dyeing slurry aqueous solution 1, methyl allyl polyoxyethylene ether and tert-butyl hydroperoxide is 16:1.4:0.16. The mass concentration of the modified dyeing slurry aqueous solution 1 is 12%. The initial temperature of the mixed solution b is 36 °C, the heating rate is 1 °C / min, the pH is controlled at 5, and the padding is two-bath two-roll padding. The specific operation is as follows: Pass the shaped fabric through a padding mangle for padding. The impregnation time is 35 min, the padding pressure is 0.1 MPa, and the liquor pick-up rate is 70%. The pre-drying temperature is 75 °C, and the time is 5 min. The baking temperature is 98 °C, and the time is 4 min. The drying temperature is 45 °C;

[0113] Step 22, secondary dyeing: Immerse the primary dyed fabric into the mixed solution c of the modified dyeing slurry aqueous solution 2 and fixing agent Y prepared in Comparative Preparation Example 1, pad, pre-dry, bake, wash three times with water, and dry at 75 °C to obtain the secondary dyed fabric. Among them, the mass ratio of the primary dyed fabric to the mixed solution c is 1:22. In the mixed solution c, the mass ratio of the modified dyeing slurry aqueous solution 2 and fixing agent Y is 10:1.5. The mass concentration of the modified dyeing slurry aqueous solution 2 is 8%. The dosage of the fixing agent Y is 20 g / L. The initial temperature of the mixed solution c is 40 °C, the heating rate is 2 °C / min, the dyeing temperature is 65 °C, and the dyeing time is 35 min. The padding is two-bath two-roll padding. The specific operation is as follows: Pass the shaped fabric through a padding mangle for padding. The impregnation time is 32 min, the padding pressure is 0.24 MPa, and the liquor pick-up rate is 72%. The pre-drying temperature is 76 °C, and the time is 6 min. The baking temperature is 92 °C, and the time is 3 min;

[0114] Step S3, pigment printing: Use the mixed solution a of the pigment printing paste and the functionalized binder prepared in Preparation Example 4 to print the secondary dyed fabric, control the printing thickness to be 25 μm, the printing speed to be 25 m / min, and perform baking treatment to obtain the preliminary product. Among them, the pigment printing paste is gardenia yellow. In the mixed solution a, the mass ratio of gardenia yellow and the functionalized binder is 1:2.6. The baking temperature is 120 °C, and the baking time is 3 min;

[0115] Step S4, post-finishing: Apply onto the surface of the preliminary product, apply it once, control the total coating thickness to be 6 μm, the coating temperature to be 110 °C, the speed of the coater to be maintained at 25 yards per minute, control the pre-drying temperature to be 84 °C, the time to be 12 min, the baking temperature to be 92 °C, and the time to be 4 min, and that's it.

[0116] Comparative Example 2

[0117] This comparative example provides a fabric cleaning and dyeing process, including the following steps;

[0118] Step S1, pretreatment process: including the following steps:

[0119] Step S11, enzyme treatment: Immerse the fabric in the enzyme treatment solution, control the bath ratio at 1:20, treat at 55°C for 10 s, then cold pile for 24 h, take out and wash, to obtain the enzyme-treated fabric; among them, the enzyme treatment solution is prepared from α-amylase, scouring penetrant CNX, chelating dispersant VE and deionized water according to the mass ratio of 25:15:5:1000;

[0120] Step S12, bleaching: Place the enzyme-treated fabric in the bleaching solution, control the bath ratio at 1:26, treat at 60°C for 26 min and take out, wash 3 times with cold and hot water in sequence, adjust the pH to neutral with a 4% hydrochloric acid aqueous solution, stentering, dry at 62°C, to obtain the bleached fabric, among which, the bleaching solution is mixed from hydrogen peroxide, oxygen bleaching stabilizer NCS-PB, sodium bicarbonate and deionized water according to the mass ratio of 5:2:0.2:10000, and the temperature of the hot water is 75°C;

[0121] Step S13, setting: Place the bleached fabric at a temperature of 125°C, the vehicle speed is 25 m / min, and the setting time is 20 s;

[0122] Step S2, dyeing: including the following steps:

[0123] Step 21, primary dyeing: Immerse the set fabric in the mixed solution b of the modified dyeing paste aqueous solution 1, methyl allyl polyoxyethylene ether and tert-butyl hydroperoxide prepared in Preparation Example 4, heat up to 64°C, pad, pre-dry, bake, wash 3 times, dry, to obtain the primary dyed fabric, among which, the bath ratio of the set fabric to the mixed solution b is 1:16, in the mixed solution b, the mass ratio of the modified dyeing paste aqueous solution 1, methyl allyl polyoxyethylene ether and tert-butyl hydroperoxide is 16:1.4:0.16, the mass concentration of the modified dyeing paste aqueous solution 1 is 12%, the initial temperature of the mixed solution b is 36°C, the heating rate is 1°C / min, the pH is controlled at 5, the padding is two-dip two-roll, and the specific operation is: Pass the set fabric through the padding mangle for padding, the impregnation time is 35 min, the padding pressure is 0.1 MPa, the liquor pickup rate is 70%, the pre-drying temperature is 75°C, the time is 5 min, the baking temperature is 98°C, the time is 4 min, and the drying temperature is 45°C;

[0124] Step 22, Secondary Dyeing: Immerse the once-dyed fabric into the mixed solution c of the modified dyeing slurry aqueous solution 2 prepared in Preparation Example 4 and Fixative Y, pad, pre-dry, bake, wash three times, and dry at 75°C to obtain the secondary-dyed fabric. Among them, the mass ratio of the once-dyed fabric to the mixed solution c is 1:22. In the mixed solution c, the mass ratio of the modified dyeing slurry aqueous solution 2 to Fixative Y is 10:1.5. The mass concentration of the modified dyeing slurry aqueous solution 2 is 8%, the dosage of Fixative Y is 20 g / L, the initial temperature of the mixed solution c is 36°C, the heating rate is 2°C / min, the dyeing temperature is 65°C, the dyeing time is 35 min, and the padding is two-dip two-roll. The specific operation is as follows: Pass the shaped fabric through the padding mangle for padding. The impregnation time is 32 min, the padding pressure is 0.24 MPa, and the liquor pickup rate is 72%. The pre-drying temperature is 76°C, and the time is 6 min. The baking temperature is 92°C, and the time is 3 min;

[0125] Step S3, Pigment Printing: Use the mixed solution a of the printing pigment and the functionalized binder prepared in Comparative Preparation Example 2 to print the secondary-dyed fabric. Control the printing thickness to be 25 μm and the printing speed to be 25 m / min, and perform baking treatment to obtain the preliminary product. Among them, the printing pigment is Gardenia Yellow. In the mixed solution a, the mass ratio of Gardenia Yellow to the functionalized binder is 1:2.6. The baking temperature is 120°C, and the baking time is 3 min;

[0126] Step S4, Post-treatment: Apply onto the surface of the preliminary product, apply it once, control the total coating thickness to be 6 μm, the coating temperature to be 110°C, the speed of the coater to be maintained at 25 yards per minute, control the pre-drying temperature to be 84°C, the time to be 12 min, and the baking temperature to be 92°C, the time to be 4 min, then it is ready.

[0127] Comparative Example 3

[0128] This comparative example provides a fabric cleaning and printing and dyeing process, including the following steps:

[0129] Step S1, Pretreatment Process: It includes the following steps:

[0130] Step S11, Enzyme Treatment: Immerse the fabric in the enzyme treatment solution, control the bath ratio to be 1:20, treat at 55°C for 10 s and then cold pad-batch for 24 h, take it out and wash it clean to obtain the enzyme-treated fabric. Among them, the enzyme treatment solution is prepared from α-amylase, scouring penetrant CNX, chelating dispersant VE and deionized water according to the mass ratio of 25:15:5:1000;

[0131] Step S12. Bleaching: Place the enzyme-treated fabric in the bleaching solution, control the liquor ratio at 1:26, treat it at 60 °C for 26 min and then take it out, wash it successively with cold and hot water three times, adjust the pH to neutral with a 4% hydrochloric acid aqueous solution, stentering, and dry it at 62 °C to obtain the bleached fabric. Among them, the bleaching solution is prepared by mixing hydrogen peroxide, oxygen bleaching stabilizer NCS-PB, sodium bicarbonate and deionized water according to the mass ratio of 5:2:0.2:10000, and the temperature of the hot water is 75 °C;

[0132] Step S13. Setting: Place the bleached fabric at a temperature of 125 °C, the vehicle speed is 25 m / min, and the setting time is 20 s;

[0133] Step S2. Dyeing: It includes the following steps:

[0134] Step 21. Primary dyeing: Immerse the set fabric in the mixed solution b of the modified dyeing slurry aqueous solution 1, methyl allyl polyoxyethylene ether and tert-butyl hydroperoxide prepared in Preparation Example 1, heat it up to 64 °C, pad-roll, pre-dry, bake, wash three times with water, and dry to obtain the primary dyed fabric. Among them, the liquor ratio of the set fabric and the mixed solution b is 1:16. In the mixed solution b, the mass ratio of the modified dyeing slurry aqueous solution 1, methyl allyl polyoxyethylene ether and tert-butyl hydroperoxide is 16:1.4:0.16, the mass concentration of the modified dyeing slurry aqueous solution 1 is 12%, the initial temperature of the mixed solution b is 36 °C, the heating rate is 1 °C / min, the pH is controlled at 5, and the pad-roll is two-bath two-roll. The specific operation is as follows: Pass the set fabric through the padding mangle for pad-rolling, the impregnation time is 35 min, the pad-rolling pressure is 0.1 MPa, the liquor pickup is 70%, the pre-drying temperature is 75 °C, the time is 5 min, the baking temperature is 98 °C, the time is 4 min, and the drying temperature is 45 °C;

[0135] Step 22. Secondary dyeing: Immerse the primary dyed fabric in the mixed solution c of the modified dyeing slurry aqueous solution 2 and the fixing agent Y prepared in Preparation Example 1, pad-roll, pre-dry, bake, wash three times with water, and dry at 75 °C to obtain the secondary dyed fabric. Among them, the mass ratio of the primary dyed fabric and the mixed solution c is 1:22. In the mixed solution c, the mass ratio of the modified dyeing slurry aqueous solution 2 and the fixing agent Y is 10:1.5, the mass concentration of the modified dyeing slurry aqueous solution 2 is 8%, the dosage of the fixing agent Y is 20 g / L, the initial temperature of the mixed solution c is 36 °C, the heating rate is 2 °C / min, the dyeing temperature is 65 °C, the dyeing time is 35 min, the pad-roll is two-bath two-roll. The specific operation is as follows: Pass the set fabric through the padding mangle for pad-rolling, the impregnation time is 32 min, the pad-rolling pressure is 0.24 MPa, the liquor pickup is 72%, the pre-drying temperature is 76 °C, the time is 6 min, the baking temperature is 92 °C, and the time is 3 min;

[0136] Step S3, pigment printing: Use a mixed solution a of pigment printing paste and the functionalized binder prepared in Comparative Preparation Example 3 to print the secondary dyed fabric. Control the printing thickness to be 25 μm and the printing speed to be 25 m / min, and perform baking treatment to obtain a preliminary product. Among them, the pigment printing paste is gardenia yellow. In the mixed solution a, the mass ratio of gardenia yellow to the functionalized binder is 1:2.6. The baking temperature is 120 °C and the baking time is 3 min;

[0137] Step S4, post-finishing: Apply onto the surface of the preliminary product once. Control the total coating thickness to be 6 μm, the coating temperature to be 110 °C, the speed of the coater to be kept at 25 yards per minute. Control the pre-baking temperature to be 84 °C and the time to be 12 min, and the baking temperature to be 92 °C and the time to be 4 min, then it is okay.

[0138] Performance testing

[0139] Dye uptake and color fastness testing

[0140] Dye uptake: Test according to the national standard GB / T9337-2009 "Determination of the dye uptake rate of disperse dyes at high temperature dyeing";

[0141] Color fastness to artificial light: Test according to GB / T 8427-2019 "Textiles - Tests for color fastness - Color fastness to artificial light: Xenon arc";

[0142] Color fastness to perspiration: Test according to the national standard GB / T 3922-2013 "Textiles - Tests for color fastness - Color fastness to perspiration";

[0143] Color fastness to water: Test according to the national standard GB / T 5713-2013 "Textiles - Tests for color fastness - Color fastness to water";

[0144] Color fastness to rubbing: Test according to the national standard GB / T 3920-2008 "Textiles - Tests for color fastness - Color fastness to rubbing";

[0145] Color fastness to soaping: Test according to the national standard GB / T 3921-2008 "Textiles - Tests for color fastness - Color fastness to soaping". The test results are shown in Table 1 below:

[0146] Table 1 Dye uptake and color fastness test results

[0147]

[0148] It can be seen from the data shown in Table 1 above that: Compared with Comparative Examples 1-3, the dye uptake rates of the fabric cleaning and printing and dyeing processes provided in Examples 1-3 of this application are all higher than 95%, and the color fastness levels are all not lower than 4-5 grades, and the coloring and color fixation effects are both excellent.

[0149] This specific embodiment is only an interpretation of the present application and does not limit the present application. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present application, it is protected by the patent law.

Claims

1. A fabric cleaning and printing and dyeing process, characterized in that, It includes the following steps: Step S1, pretreatment process: The fabric is sequentially subjected to enzyme treatment, bleaching, and shaping to obtain a shaped fabric; Step S2, dyeing: The shaped fabric is subjected to primary dyeing and secondary dyeing to obtain a secondary-dyed fabric; Step S3, pigment printing: A mixed liquid a of printing pigment and functional binder is used to print the secondary-dyed fabric, controlling the printing thickness to be 25 - 35 μm and the printing speed to be 25 - 35 m / min, and then baking treatment is carried out to obtain a preliminary product. Among them, in the mixed liquid a, the mass ratio of the pigment to the functional binder is 1:2.6 - 3.2; Step S4, post-finishing: The antibacterial softening finishing agent is coated on the surface of the preliminary product, controlling the coating temperature to be 110 - 120 °C, and the speed of the coating machine to be maintained at 25 - 35 yards per minute, and then drying treatment is carried out to complete; The functional binder is first prepared by Schiff condensation reaction of chitosan and 5-hydroxymethylfurfural to obtain hydroxymethylated chitosan, and then continued to react with citric acid by esterification reaction.

2. The fabric cleaning and printing and dyeing process according to claim 1, characterized in that, The specific steps of the enzyme treatment are as follows: The fabric is immersed in the enzyme treatment solution, controlling the bath ratio to be 1:20 - 24, treating at 55 - 65 °C for 10 s, cold piling for 20 - 24 h, taking out and washing, to obtain an enzyme-treated fabric; among them, the enzyme treatment solution is prepared from α-amylase, scouring penetrant, chelating dispersant, and deionized water according to the mass ratio of 25 - 30:15 - 20:5 - 7:1000.

3. A fabric cleaning and printing and dyeing process according to claim 1, characterized in that, The specific steps of the bleaching are as follows: The enzyme-treated fabric is placed in the bleaching solution, controlling the bath ratio to be 1:26 - 30, treating at 60 - 70 °C for 26 - 42 min and taking out, successively washing several times with cold and hot water, adjusting the pH to neutral, tentering, and drying to obtain a bleached fabric. Among them, the bleaching solution is mixed from hydrogen peroxide, oxygen bleaching stabilizer, sodium bicarbonate, and deionized water according to the mass ratio of 5 - 8:2 - 4:0.2 - 0.6:10000.

4. A fabric cleaning and printing and dyeing process according to claim 1, characterized in that, The dyeing process specifically includes the following steps: Step A1, primary dyeing: The shaped fabric is immersed in a mixed liquid b of modified dyeing slurry aqueous solution 1, methyl allyl polyoxyethylene ether, and tert-butyl hydroperoxide, padding, pre-drying, baking, washing, and drying to obtain a primary-dyed fabric; Step A2, secondary dyeing: The primary-dyed fabric is immersed in a mixed liquid c of modified dyeing slurry aqueous solution 2 and a fixing agent, padding, pre-drying, baking, washing, and drying to obtain a secondary-dyed fabric.

5. A fabric cleaning and printing process according to claim 4, characterized in that In the step A1, the bath ratio of the shaped fabric to the mixed liquid b is 1:16 - 22. In the mixed liquid b, the mass ratio of the modified dyeing slurry aqueous solution 1, methyl allyl polyoxyethylene ether, and tert-butyl hydroperoxide is 16:1.4 - 1.8:0.16 - 0.

22. The mass concentration of the modified dyeing slurry aqueous solution 1 is 12 - 14%, the initial temperature of the mixed liquid b is 36 - 48 °C, the heating rate is 1 - 2 °C / min, and the pH is controlled to be 5 - 6.

6. A fabric cleaning and printing and dyeing process according to claim 4, characterized in that, In the said step A2, the mass ratio of the once-dyed fabric to the mixed liquid c is 1:22 - 26. In the mixed liquid c, the mass ratio of the modified dyeing slurry aqueous solution 2 to the fixing agent is 10:1.5 - 2.

5. The mass concentration of the modified dyeing slurry aqueous solution 2 is 8 - 10%. The dosage of the fixing agent is 20 - 24 g / L. The initial temperature of the mixed liquid c is 40 - 46°C, the heating rate is 2 - 3°C / min, the dyeing temperature is 65 - 84°C, and the dyeing time is 35 - 45 min.

7. A fabric cleaning and printing and dyeing process according to claim 4, characterized in that In the said steps A1 and A2, the modified dyeing slurry is prepared by the following method: Add 4 - 6 parts by weight of disperse dye, 0.8 - 1.2 parts by weight of emulsifier, 2 - 4 parts of calcium nitrate, and 2 - 4 parts of sodium carbonate into 140 - 180 parts by weight of propylene glycol aqueous solution, adjust the pH value to 4.1 - 4.5 with mixed acid, and stir evenly to obtain the modified dyeing slurry.

8. A fabric cleaning and printing and dyeing process according to claim 1, characterized in that, The said functionalized binder is prepared by the following steps: Dissolve chitosan in acetic acid solution, add absolute ethanol, stir evenly, add 5-hydroxymethylfurfural, stir and react at 62 - 64°C for 8 - 10 h. After the reaction, cool to room temperature, add sodium borohydride, stir and react for 12 - 14 h, adjust the pH to neutral, centrifuge and wash, and dry to obtain hydroxymethylated chitosan. Add the hydroxymethylated chitosan into acetic acid solution, ultrasonically disperse evenly, add citric acid and p-toluenesulfonic acid, heat up to 60 - 70°C, continue to stir and react for 14 - 16 h, centrifuge, wash the precipitate and dry to obtain the functionalized binder.

9. A fabric cleaning and printing and dyeing process according to claim 8, characterized in that, The mass ratio of the said chitosan, acetic acid solution, absolute ethanol, 5-hydroxymethylfurfural and sodium borohydride is 0.3 - 0.5:30 - 40:50 - 60:0.16 - 0.20:0.1, and the mass ratio of the hydroxymethylated chitosan, acetic acid solution, citric acid and p-toluenesulfonic acid is 0.5:40 - 50:0.22 - 0.36:0.01 - 0.03.

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