CN111335048A - Pad dyeing method for chinlon 56 and protein fiber blended fabric - Google Patents
Pad dyeing method for chinlon 56 and protein fiber blended fabric Download PDFInfo
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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
- D06P1/39—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 acid dyes
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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
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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
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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
- D06P1/44—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 insoluble pigments or auxiliary substances, e.g. binders
- D06P1/445—Use of auxiliary substances before, during or after dyeing or printing
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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
- D06P1/44—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 insoluble pigments or auxiliary substances, e.g. binders
- D06P1/673—Inorganic compounds
- D06P1/67333—Salts or hydroxides
- D06P1/6735—Salts or hydroxides of alkaline or alkaline-earth metals with anions different from those provided for in D06P1/67341
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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
- 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
- D06P3/82—Textiles which contain different kinds of fibres
- D06P3/8204—Textiles which contain different kinds of fibres fibres of different chemical nature
- D06P3/8209—Textiles which contain different kinds of fibres fibres of different chemical nature mixtures of fibres containing amide groups
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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
- 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
Abstract
The invention discloses an efficient pad dyeing method for a chinlon 56 fiber and protein fiber blended fabric. The method comprises the steps of immersing blended fabric or non-woven fabric formed by chinlon 56 and protein fiber into padding liquid for pad dyeing, wherein the padding liquid comprises dye and dyeing auxiliary agent; the dye is selected from any one of the following: acid dyes, neutral dyes and reactive dyes. The method (1) realizes the one-bath one-step dyeing of the same dye set of the blended fiber; (2) the color fastness is good, the color fastness test results of the dyed fabric such as rubbing resistance, perspiration resistance, sunlight resistance, soaping resistance and the like can meet the use requirements, the rubbing resistance, the perspiration resistance, the sunlight resistance and the soaping resistance can reach more than 3-4 grades, and the sunlight resistance and the color fastness can reach more than 6 grades. (3) The method is a method for quickly dyeing the chinlon and protein fiber blended fabric at low temperature in a short time, and has the advantages of simple process flow, energy conservation and emission reduction.
Description
Technical Field
The invention belongs to the field of textile dyeing and finishing, and relates to a high-efficiency pad dyeing method for a chinlon 56 fiber and protein fiber blended fabric.
Background
The nylon fabric is the first synthetic fiber appearing in the world, the varieties of the nylon fabric are many, but the molecular structure of the nylon fabric contains the same amide group, the common varieties are that nylon 6 is polycaprolactam, nylon 66 is formed by polymerizing hexamethylene diamine and adipic acid, nylon 56 is novel polyamide fiber, the nylon fabric is different from nylon 66 in that petroleum raw materials are used, raw materials used in the nylon fabric are biological raw materials, and the nylon fabric is prepared by fermenting various starches and straw cellulose through a biological engineering method to prepare pentamethylene diamine, so that the nylon fabric can replace hexamethylene diamine due to large batch and low cost. The bio-based fiber has the excellent characteristics of environmental friendliness, renewable raw materials, biodegradation and the like, and is beneficial to solving the problems of serious resource and energy shortage, environmental pollution and the like in the current global economic and social development.
Wool, silk and other natural and regenerated protein fibers are hydrophilic fibers, the amino and carboxyl groups of which can be replaced by-NH, respectively+and-COO-The ionic form, in combination with the anionic or cationic dye, can also form a covalent bond with the reactive dye. However, protein fibers are not alkali-resistant, and dyeing is preferably carried out in an acidic or near-neutral dye liquor.
The acid dye is generally aromatic sodium sulfonate salt, contains sulfonic acid group, hydroxyl group and other groups, and a few sodium carboxylate salts are ionized in water to form cellulose acid anions which can be combined with amino groups or amide groups on fibers, so that the acid dye can be used for dyeing protein fibers such as wool and silk and polyamide (chinlon) synthetic fibers. The neutral dye (1:2 type acidic mordant-containing dye) is prepared by complexing two dye molecules and a metal atom, has the same dyeing principle as the acidic dye for neutral bath dyeing, and can be used for dyeing wool, silk, nylon, etc. in slightly acidic and neutral medium. During dyeing, the combination between dye and fiber is mainly ion bond, intermolecular force and hydrogen bond.
Under the same dyeing condition, the difference of the dyeing rates of the dyed nylon fiber and the wool fiber is large, so that the conditions of uneven dyeing and inconsistent coloring of the nylon wool blended fabric are caused. The traditional dyeing blended fabric generally adopts two-step dyeing by adopting two dyes because each fiber has different dye affinity, and has higher dyeing temperature, complex actual operation and poorer dyeing identity. Therefore, the research on the method for dyeing the blended fabric of the nylon 56 fiber and the protein fiber by one-step rapid pad dyeing at low temperature and within short time has important practical significance.
Disclosure of Invention
The invention aims to provide an efficient pad dyeing method for a chinlon 56 fiber and protein fiber blended fabric.
The invention provides a high-efficiency pad dyeing method of a chinlon 56 fiber and protein fiber blended fabric, which comprises the following steps: immersing the object to be dyed into an acid pad dyeing solution for pad dyeing;
wherein the dyed object is a woven or nonwoven fabric formed by nylon 56 fibers and protein fibers.
Woven fabrics in the present invention include both woven and knitted fabrics.
The woven fabric is formed by mutually vertical yarns of two systems (or directions) and interweaving the yarns according to a certain rule.
The knitted fabric is formed in a different manner from woven fabric, and may be classified into weft knitted fabric and warp knitted fabric according to the production manner.
The non-woven fabric is also called non-woven fabric, and is formed by forming a fiber web structure by directionally or randomly arranging textile short fibers or filaments and then reinforcing the fiber web structure by adopting a mechanical method, a thermal bonding method or a chemical method and the like.
The mass percentage of the chinlon 56 fiber in the dyed material is 10-90%, preferably 45-65%.
The end group content of the nylon 56 fiber has the following requirements:
the content of the terminal amino groups of the chinlon 56 fiber can be 20-80 mol/106gr, preferably 20 to 60mol/106gr, more preferably 45 to 55mol/106gr；
The content of terminal carboxyl groups of the chinlon 56 fiber can be 50-110 mol/106gr, preferably 60 to 90mol/106gr, more preferably 65 to 75mol/106gr。
The crystallinity of the nylon 56 fiber can be 30-70%, preferably 45-65%, and more preferably 50-65%.
The nylon 56 fiber can be prepared by a melt direct spinning method or a melt batch spinning method.
The regulation and control of the end group value of the nylon 56 fiber are realized in the polymerization process, and the crystallinity is regulated and controlled in the spinning process.
The protein fiber includes animal protein fiber such as wool, rabbit hair, silk, casein protein fiber, silkworm pupa protein fiber, pearl protein fiber or milk protein fiber; vegetable protein fibers, for example, peanut protein fibers, corn protein fibers, soy protein fibers, or combinations thereof.
The pH of the padding liquor may be: 3 to 7, specifically 4.5 to 6.8.
The padding liquid comprises dye and dyeing auxiliary agent;
the padding liquid also comprises a solvent, and the solvent can be water.
The dye in the invention is selected from any one of the following: acid dyes, neutral dyes and reactive dyes.
In the pad dyeing method, the steps of dyeing by using the acid dye or the neutral dye are as follows: soaking the dyed object in padding liquor containing dye and dyeing assistant, padding by a padder, controlling the padding rate range, steaming or baking, and finally carrying out dyeing post-treatment.
The padding liquor can be at room temperature;
because the dye-uptake rates of different dyes are different, the soaking time can be 1-10 min;
the pH of the padding liquor may be: 3 to 7, specifically 4.5 to 6.8;
the padding dye liquor can be: one-dipping one-rolling, two-dipping two-rolling or multi-dipping multi-rolling;
in the padding liquor, the concentration of the dye can be 5g/L-40g/L, and specifically can be 10g/L-30 g/L;
the dosage of the dyeing auxiliary agent can be 1g/L-50g/L, and specifically can be 5g/L-30 g/L.
In the padder, the padder speed is controlled to be 35-45m/min, and the rolling pressure is controlled to be 0.18-0.25 MPa;
the specified rolling reduction may be: 50-80%, and further 65-75%.
The temperature of the steaming or baking is: 50-100 deg.C, further 70-95 deg.C, specifically 85 deg.C and 95 deg.C; the time may be: 30s-30min, further 5min-20min, specifically 10min, 15min, and 20 min.
The pad dyeing post treatment of the acid dye and the neutral dye comprises the following steps: washing with hot water, washing with water, and air drying.
Hot water washing: washing with 50-80 deg.C hot water for 1-3 times;
washing with water: washing with water at room temperature for 1-3 times.
In the pad dyeing method, the dyeing by the reactive dye is divided into two methods:
the method I comprises the following steps: soaking the dyed object in padding liquor containing dye, dyeing auxiliary agent and color fixing agent, padding by padder, controlling padding rate range, steaming or baking, and finally carrying out dyeing post-treatment.
The second method comprises the following steps: soaking the dyed object in padding liquor containing dye and dyeing auxiliary agent, padding the object by padder, controlling the padding rate range, padding the object in fixing liquor, steaming or baking, and finally performing dyeing post-treatment.
Wherein the padding liquor can be at room temperature;
because the dye-uptake rates of different dyes are different, the soaking time can be 1-10 min;
the pH of the padding liquor may be: 3 to 7, specifically 4.5 to 6.8;
the padding dye liquor can be: one-dipping one-rolling, two-dipping two-rolling or multi-dipping multi-rolling;
in the padding liquor, the concentration of the dye can be 5g/L-40g/L, and specifically can be 10g/L-30 g/L;
the dosage of the dyeing auxiliary agent can be 1g/L-50g/L, and specifically can be 5g/L-30 g/L.
The concentration of the color fixing agent can be 1-50g/L, specifically 20-30g/L, and the color fixing agent is soaked for 1-10 min.
The color fixing agent can be a surfactant (cationic type), a quaternary ammonium salt without surface activity, a resin type color fixing agent, a cross-linking color fixing agent, a formaldehyde-free color fixing agent and the like, and can be specifically sodium carbonate and sodium bicarbonate.
The padding retention rate of the fabric in the padding color fixing solution can be as follows: 50-80%, and further 70-80%.
In the padder, the padder speed is controlled to be 35-45m/min, and the rolling pressure is controlled to be 0.18-0.25 MPa;
the specified rolling reduction may be: 50-80%, and further 70-80%.
The baking or steaming temperature: 50-100 deg.C, further 70-95 deg.C, specifically 85 deg.C and 95 deg.C; the time may be: 30s-30min, further 5min-20min, specifically 10min, 15min, and 20 min.
The reactive dye pad dyeing post treatment comprises the following steps: hot water washing, soaping, water washing and air drying.
Hot water washing: washing with 50-80 deg.C hot water for 1-3 times;
washing with water: washing with water at room temperature for 1-3 times.
The soaping conditions are as follows: 1g/L-5g/L standard soap chips, bath ratio: soaping for 1: 5-15 at 50-80 ℃ for 1-10 min;
specifically, the acid dye may be at least one of azo acid dye, anthraquinone acid dye, triarylmethane acid dye, xanthene acid dye and nitro acid dye;
the acid dye can be acid red NHFS, acid yellow NHFS, acid blue NHFS, F type weakly acidic dye, acid scarlet FG, acid yellow G, acid yellow AD, acid red AD, acid gray AD, weakly acidic scarlet FG or weakly acidic blue 5R.
Specifically, the neutral dye can be a 1:2 type metal complex dye in an acidic mordant-containing dye, and specifically can be an Annosatel M type metal complex dye and an S type metal complex dye.
The neutral dye may be neutral deep yellow GL, neutral gray 2BL, neutral yellow 2R, neutral soy red B, neutral blue 2R, neutral brown B, neutral gray G, neutral red GAL, neutral Tibetan BR, neutral black AW 200%, neutral yellow TB, neutral yellow R, neutral red 3B, neutral red 10B, neutral red 3G, neutral turquoise blue G, neutral blue R or neutral blue RAWL.
Specifically, the reactive dye can be a chlorotriazine reactive group reactive dye, a vinylsulfone reactive group reactive dye, a multi-reactive group reactive dye, a bromoacrylamide reactive group reactive dye, an epoxy reactive dye or an azide reactive dye;
reactive dyes of the chloro-s-triazine reactive group: a reactive dye K-6G; vinyl sulfones: a reactive dye K-NR; multi-active base class: reactive brilliant red M-3 BE; brominated acrylamides: lanoline blue 3G, reactive red 83, reactive yellow 39, reactive blue 69, annofel red ARC, annofel yellow/golden ARC, annofel blue ARC; reactive dyes for wool of unknown structure: bright yellow WG, active bright red WG, active brilliant blue WR, active black WG.
Specifically, the dyeing auxiliary can be a pH regulator, a chinlon dyeing rate regulator and/or a protein fiber dyeing rate regulator;
the pH regulator can be acid, alkali, acidic oxide, alkaline oxide, weak acid strong base salt, strong acid weak base salt, etc., such as 1% aqueous solution of acetic acid, sodium hydroxide, calcium oxide, sodium carbonate, ammonium chloride, etc.;
the nylon dyeing rate regulator plays a role in retarding and stopping dyeing of nylon fibers dyed by dye in a dye solution, and the protein fiber dyeing rate regulator plays a role in accelerating dyeing of protein fibers in the dye solution, so that the dyeing rates of the two fibers are basically consistent, and the dyeing uniformity of blended fabrics is achieved.
The polyamide dyeing rate regulator can be specifically peregal O, a leveling agent JV-905, a leveling agent JV-1, a leveling agent SET, a leveling agent HJ-219, a leveling agent NL, a retarding agent NLJ, a retarding agent NLJ-287, a retarding agent RF and a retarding agent FK-450A;
the protein fiber dyeing rate regulator can be an accelerating agent TGR-M, an accelerating agent WDS, an accelerating agent KD, an accelerating agent WDP, an accelerating agent W-201, an accelerating agent DW or anhydrous sodium sulphate.
The amount of the polyamide dyeing rate regulator or the protein fiber dyeing rate regulator is 1-50 g/L;
according to a specific embodiment of the present invention, the dye is an acid dye (e.g. weak acid bright red FG), and the following auxiliaries are used: the dosage of the dye-blocking agent RF is 5g/L, and the dosage of the accelerating agent KD is 8 g/L.
According to a specific embodiment of the present invention, the dye is a neutral dye (e.g. neutral yellow 2R), and the auxiliary agents used are: the dosage of peregal O is 10g/L, and the dosage of accelerating agent TGR-M is 5 g/L.
According to a specific embodiment of the invention, the dye is a reactive dye (such as reactive brilliant blue D-RV), and the adopted auxiliaries are 20g/L of anhydrous sodium sulphate and 20g/L of leveling agent HJ-21915 g/L.
Aiming at the conditions that in the prior art, on one hand, the dyeing rate of dyed chinlon 56 fiber and protein fiber (such as wool fiber) is different under the same condition, so that the blended fabric needs to be dyed by adopting a two-bath two-step method, the stability of the dyeing process is poor, and the color difference is easy to generate; on the other hand, the two-bath two-step dyeing has the defects of high energy consumption, long time, high cost and the like. The invention provides a one-bath one-step pad dyeing process for a blended fabric of chinlon 56 fiber and protein fiber by adopting acid dye, neutral dye or reactive dye under an acid condition, and has the advantages that (1) the same dye set of the blended fiber is dyed in the same bath one-step method; (2) the color fastness is good, the color fastness test results of the dyed fabric such as rubbing resistance, perspiration resistance, sunlight resistance, soaping resistance and the like can meet the use requirements, the rubbing resistance, the perspiration resistance, the sunlight resistance and the soaping resistance can reach more than 3-4 grades, and the sunlight resistance and the color fastness can reach more than 6 grades. (3) The method is a method for quickly dyeing the chinlon and protein fiber blended fabric at low temperature in a short time, and has the advantages of simple process flow, energy conservation and emission reduction.
Drawings
FIG. 1 shows the dyeing effect of polyamide 56 fibers with different terminal amino group contents.
Detailed Description
The present invention is described below with reference to specific embodiments, but the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
The experimental procedures used in the following examples are all conventional procedures unless otherwise specified.
Materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
In the quantitative tests in the following examples, three replicates were set up and the results averaged.
The nylon 56 fiber adopted by the embodiment of the invention is prepared by the following method:
preparing a chinlon 56 salt water solution with the concentration of 50 wt% in a salt solution tank, and specifically comprising the following steps: adding 90kg of chinlon 56 dry salt into 55kg of desalted water, completely dissolving, and adjusting the pH value of a salt solution to 7.5-8.5. After preparing salt solution, heating a salt solution tank to 50 ℃, opening a feeding valve to inject the salt solution into a polymerization reaction kettle to start prepolymerization when the temperature reaches a set temperature, wherein the prepolymerization test conditions are as follows: the temperature in the reaction kettle is set to be 212 ℃, the pressure is 1.75MPa, the stirring speed is 60r/min, the reaction is carried out for 2 hours, and then the temperature is raised to be 250 ℃. And (3) when the temperature reaches 250 ℃, reducing the pressure for about 1h, raising the temperature of the reaction kettle to 270 ℃ while reducing the pressure, vacuumizing for about 10min, raising the temperature in the kettle to 275 ℃, completing the polymerization reaction, directly discharging, cooling by cold water and air blowing, and cutting by a granulator to obtain the nylon 56 slices. Drying the slices at 80 ℃ for 22h, and setting spinning conditions as follows: the spinning temperature is 288 ℃, the rotating speed of a metering pump is 16rpm/min, the spinning speed is 1000m/min, the side blowing air pressure is 450pa, the concentration of a winding oiling agent F5103 is 5%, and the drafting multiple and the heating temperature are as follows: the first drawing ratio is 2.5-3.5; the secondary draft ratio is 1.01-1.42; the temperature of the drawing box is 170 ℃; the second pulling temperature is 180 ℃; the temperature of the hot plate is 200 ℃; the temperature of the three-pulling process is 180 ℃. And (4) winding to obtain the nylon 56 fiber.
The pH values of the different salt solutions are shown in Table 1 for different end groups and carboxyl contents of the fibers (the draft control is 3.5).
As can be seen from the data in Table 1, when the pH of the aqueous salt solution is less than 7.5, the terminal group content is low, and when the pH of the aqueous salt solution is greater than 8.5, the acid-amine ratio of the reaction raw material is unbalanced, and polymerization cannot be performed, so that the optimum pH range is 7.5 to 8.0.
TABLE 1 influence of different salt solution pH values on the terminal amino group content of nylon 56 fiber
The method comprises the steps of dyeing a 1# sample and a 3# sample, selecting neutral gray 2BL of a dye, preparing 1% (o.w.f.) dye liquor, enabling the pH value of the dye liquor to be 6.8, adding a leveling agent, and adding 0.5% (o.w.f.) of O, wherein the dyeing bath ratio is 1: 10. Adding the dyed materials (1# and 3#) with different terminal amino group contents at normal temperature; then heating to 70 ℃ at the heating rate of 2 ℃/min, and preserving the heat for 20min to finish dyeing. And cooling the dye liquor to normal temperature, taking out the sample, washing the sample for 1 time at 50 ℃ with warm water, washing the sample for 1 time with cold water at normal temperature, and air-drying the sample.
The dyeing effect is shown in figure 1, the left figure is sample No. 1, the right figure is sample No. 3, the difference of the end group content and the dyeing effect of the two fibers is obviously seen.
As can be seen from the table 1 and the figure 1, when the pH value is regulated to be 7.5-8.0, the amino-terminated value content of the nylon 56 fiber is high, and the dyeing effect is good.
The different degrees of crystallinity of the fibers corresponding to different draw ratios are shown in table 2 (controlling the pH value of the saline solution of the chinlon 56 to be 7.85). Under the same conditions, two fibers were dyed with acid dyes at 90 ℃ and the exhaustion rates are shown in Table 2.
TABLE 22 influence of different draft ratios on Nylon 56 fibers
| Sample No. 2 | Degree of crystallinity (%) | The dye uptake rate% |
| ① PA56 draft multiple 2 | 56.8 | 95.7 |
| ② PA56 draft factor 3.4 | 64.0 | 83.1 |
As can be seen from the data in table 2, the greater the crystallinity of the fiber, the smaller the amorphous region of the fiber, i.e., the less dye that can enter the interior of the fiber, and the less effective the fiber dyeing.
According to the above fiber preparation method, Chinlon 56 fiber having a salt solution pH of 7.85, a primary draft of 3.15 times and a secondary draft of 1.12 times (a co-draft of 3.53 times) was prepared, and the following dyeing treatment was carried out with an amino end group content of 45.4mol/106gr, a carboxyl end group content of 74.1mol/106gr and a crystallinity of 65.0%.
The blend ratio of nylon 56 to wool blend fabric used in the examples described below was 55/45.
The nylon used in the comparative example described below was 66, a commercially available product, and tested for an amino end group content of 46mol/106 gr.
The dye uptake was determined as described in the following examples:
and (3) respectively measuring the absorbance of the dye solution before and after dyeing at the maximum absorption wavelength by using a spectrophotometer, and calculating the dyeing percentage according to the following formula: ct ═ 1-A1/A0) × 100% (in the formula: A) 100%0The absorbance of the original dye solution is obtained; a. the1The absorbance of the residue after dyeing was used. )
Example 1 pad dyeing of Chinlon 56 and wool blended fabric with weakly acidic bright red FG dye
The adopted dyed material is a blended fabric of nylon 56/wool (55/45), and the specification is 10cm × 10 cm.
The padding liquor comprises the following components: preparing 100mL of dye solution which comprises an acid dye (faintly acid bright red FG), a dyeing auxiliary agent (a dye-retardant agent RF 5g/L and an accelerating agent KD 8g/L) and a solvent (water); wherein the concentration of the acid dye is 30 g/L; the pH of the padding liquor was 4.7.
And (3) finishing the configuration of the padding liquid, soaking the blended fabric in the padding liquid for 3min by adopting a one-dip one-pad mode at room temperature, controlling the padder speed to be 40m/min, the pad pressure to be 0.2MPa and the padding rate to be about 75%, baking the padded fabric for 10min at 95 ℃, taking out a sample, washing the sample once in hot water at 50 ℃, washing the sample once at normal temperature, and airing to finish the padding process. The products prepared in this example were tested and the results are shown in table 3.
Example 2 pad dyeing of Chinlon 56 and wool fiber blended Fabric with neutral dye (neutral yellow 2R)
The adopted dyed material is a blended fabric of nylon 56/wool (55/45), and the specification is 10cm × 10 cm.
The padding liquor comprises the following components: preparing 100mL of dye solution which comprises neutral dye (neutral yellow 2R), dyeing auxiliary agent (peregal O10g/L, accelerant TGR-M5 g/L) and solvent (water); wherein the concentration of the neutral dye is 30g/L, and the pH value of the padding liquid is 6.8.
And (3) finishing the preparation of the dye solution, soaking the blended fabric in the dye solution for 5min by adopting a one-soaking one-rolling mode at room temperature, controlling the padder speed to be 40m/min, the pad pressure to be 0.22MPa and the pad liquor rate to be about 70 percent, baking the padded fabric for 20min at the temperature of 85 ℃, taking out a sample, washing the sample once in hot water at the temperature of 60 ℃, washing once at normal temperature, and airing to finish the pad dyeing process. The products prepared in this example were tested and the results are shown in table 3.
Example 3 pad dyeing of Chinlon 56 and wool fiber blend Fabric with reactive dye (reactive Brilliant blue D-RV)
The adopted dyed material is a blended fabric of nylon 56/wool (55/45), and the specification is 10cm × 10 cm.
The padding liquor comprises the following components: preparing 100mL of dye solution which comprises reactive dye (reactive brilliant blue D-RV), 20g/L of anhydrous sodium sulphate, dyeing auxiliary agent (leveling agent HJ-21915 g/L and accelerating agent DW 4g/L) and solvent (water); wherein the concentration of the reactive dye is 15g/L, and the pH value of the padding liquid is 3.5.
The preparation of the dye solution is completed, under the condition of room temperature, a two-dipping two-rolling mode is adopted, the blended fabric is soaked in the dye solution for 5min, the padder speed is controlled to be 45m/min, the pad pressure is 0.2MPa, the pad liquor rate is about 75%, the pad dyed fabric is soaked in the fixing solution for one-rolling (the fixing solution method is that 100mL of fixing solution is prepared, 20g/L of sodium carbonate solution is soaked for 2min), the pad rate is controlled to be about 75%, the fixed sample is baked at 95 ℃ for 15min, then taken out and washed once in warm water at 50 ℃, washed once in cold water at normal temperature, washed once in soaped (3g/L of standard soap chips, the bath ratio is 1:10, and soaped once in cold water at 50 ℃), and then is taken out and washed once in cold water at normal temperature and dried, so that the pad dyeing. The products prepared in this example were tested and the results are shown in table 3.
Comparative example 1, the substrate used was a nylon 66/wool (55/45) blend fabric, specification 10cm × 10 cm.
The padding liquor comprises the following components: preparing 100mL of dye solution which comprises an acid dye (faintly acid bright red FG), a dyeing auxiliary agent (a dye-retardant agent RF 5g/L and an accelerating agent KD 8g/L) and a solvent (water); wherein the concentration of the acid dye is 30g/L, and the pH value of the padding liquid is 4.7.
And (3) finishing the configuration of the padding liquid, soaking the blended fabric in the padding liquid for 3min by adopting a one-dip one-pad mode at room temperature, controlling the padder speed to be 40m/min, the pad pressure to be 0.2MPa and the padding rate to be about 75%, baking the padded fabric for 10min at 95 ℃, taking out a sample, washing the sample once in hot water at 50 ℃, washing the sample once at normal temperature, and airing to finish the padding process. The product prepared in this comparative example was tested and the results are shown in table 3.
Comparative example 2 pad dyeing of Chinlon 56 and wool blended Fabric with Weak acid Bright Red FG dye (No dyeing auxiliary)
The padding liquor comprises the following components: preparing 100mL of dye solution which comprises an acid dye (weakly acidic bright red FG) and a solvent (water); wherein the concentration of the acid dye is 30g/L, and the pH value of the padding liquid is 4.7.
And (3) finishing the configuration of the padding liquid, soaking the blended fabric in the padding liquid for 3min by adopting a one-dip one-pad mode at room temperature, controlling the padder speed to be 40m/min, the pad pressure to be 0.2MPa and the padding rate to be about 75%, baking the padded fabric for 10min at 95 ℃, taking out a sample, washing the sample once in hot water at 50 ℃, washing the sample once at normal temperature, and airing to finish the padding process. The product prepared in this comparative example was tested and the results are shown in table 3.
Comparative example 3 pad dyeing of Chinlon 56 and wool fiber blend Fabric (No dyeing auxiliary used) with reactive dye (reactive Brilliant blue D-RV)
The adopted dyed material is a blended fabric of nylon 56/wool (55/45), and the specification is 10cm × 10 cm.
The padding liquor comprises the following components: preparing 100mL of dye solution which comprises reactive dye (reactive brilliant blue D-RV) and solvent (water); wherein the concentration of the reactive dye is 15 g/L; the pH value of the padding liquor is 3.5.
The preparation of the dye solution is completed, under the condition of room temperature, a two-dipping two-rolling mode is adopted, the blended fabric is soaked in the dye solution for 5min, the padder speed is controlled to be 45m/min, the pad pressure is 0.2MPa, the pad liquor rate is about 75%, the pad dyed fabric is soaked in the fixing solution for one-rolling (the fixing solution method is that 100mL of the fixing solution is prepared, 20g/L of sodium carbonate solution is soaked for 2min), the pad rate is controlled to be about 75%, a fixed sample is baked at 95 ℃ for 15min, then taken out and washed once in hot water at 50 ℃, washed once in cold water at room temperature, soaped (3g/L of standard soap chips, the bath ratio is 1:10, 50 ℃ and 10min), washed once in cold water at room temperature, and dried, and the pad dyeing is completed. The product prepared in this comparative example was tested and the results are shown in table 3.
Table 3 dyed fabric test results
The homochromatic balance value (Q) is the ratio of the K/S value of the chinlon to the K/S value of the wool, and the closer the ratio is to 1, the better the homochromatic property of the chinlon and the wool is. As can be seen from Table 2, the samples of examples 1-3 added with the chinlon dye-uptake rate regulator and the wool dye-uptake rate regulator can achieve good homochromatism at a lower steaming temperature, and all color fastnesses are above grade 4, so that the color fastness requirements in textile application are met; the experimental results of the example 1 and the comparative example 1 show that the chinlon 66/wool blended fabric has poor dyeing identity and low color fastness under the conditions of no dyeing auxiliary agent and low steaming temperature, which indicates that the same process is not suitable for the chinlon 66/wool blended fabric; the test results of comparative examples 2-3 show that the auxiliary agent has an important effect on the dyeing identity under the same process conditions.
Claims (10)
1. A pad dyeing method of chinlon 56 fiber and protein fiber blended fabric comprises the following steps: immersing the object to be dyed into pad dyeing liquid for pad dyeing;
wherein the dyed object is a woven or nonwoven fabric formed by nylon 56 fibers and protein fibers;
the woven fabric comprises woven fabric and knitted fabric;
the non-woven fabric is non-woven fabric;
the padding liquid comprises dye and dyeing auxiliary agent;
the dye is selected from any one of the following: acid dyes, neutral dyes, and reactive dyes;
the pH value of the padding liquor is as follows: 3-7, but not 7.
2. The method of claim 1, wherein: the mass percentage of the chinlon 56 fiber in the dyed material is 10-90%, preferably 45-65%;
the end group content of the nylon 56 fiber has the following requirements:
the content of terminal amino groups of the chinlon 56 fiber is 20-80 mol/106gr, preferably 20 to 60mol/106gr, more preferably 45 to 55mol/106gr；
The content of terminal carboxyl groups of the chinlon 56 fiber is 50-110 mol/106gr, preferably 60 to 90mol/106gr, even more excellentSelecting 65-75 mol/106gr。
The crystallinity of the chinlon 56 fiber is 30-70%, preferably 45-65%, and more preferably 50-65%;
the protein fiber comprises animal protein fiber and/or fabric protein fiber.
3. The method according to claim 1 or 2, characterized in that: the dye is an acid dye or a neutral dye, and the acid one-bath pad dyeing method comprises the following steps: soaking the dyed object in padding liquor containing dye and dyeing assistant, padding by a padder, controlling the padding rate range, steaming or baking, and finally carrying out dyeing post-treatment.
4. The method of claim 3, wherein:
the temperature of the padding liquor is room temperature;
in the padding liquid, the concentration of the dye is 5g/L-40g/L, preferably 10g/L-30 g/L;
the concentration of the dyeing auxiliary agent is 1g/L-50g/L, preferably 5g/L-30 g/L;
the soaking time is 1-10 min;
in the padder, the padder speed is controlled to be 35-45m/min, and the rolling pressure is controlled to be 0.18-0.25 MPa;
the specified rolling reduction is as follows: 50-80%, preferably 65-75%;
the padding dye liquor is: one-dipping one-rolling, two-dipping two-rolling or multi-dipping multi-rolling;
the temperature of the steaming or baking is: 50-100 ℃, preferably 70-95 ℃; the time is as follows: 30s-30min, preferably 5min-20 min.
5. The method according to claim 3 or 4, characterized in that: the pad dyeing post treatment of the acid dye and the neutral dye comprises the following steps: washing with hot water, washing with water, and air drying;
hot water washing: washing with 50-80 deg.C hot water for 1-3 times;
washing with water: washing with water at room temperature for 1-3 times.
6. The method according to claim 1 or 2, characterized in that: the dye is a reactive dye, and the acid one-bath pad dyeing method comprises the following steps: soaking the dyed object in padding liquor containing dye, auxiliary agent and color fixing agent, padding by padder, controlling padding rate range, steaming or baking, and finally carrying out dyeing post-treatment.
7. The method according to claim 1 or 2, characterized in that: the dye is a reactive dye, and the acid one-bath pad dyeing method comprises the following steps: soaking the dyed object in padding liquor containing dye and auxiliary agent, padding the object by padder, controlling the padding rate range, padding the object in fixing liquor, steaming or baking, and finally carrying out dyeing post-treatment.
8. The method according to claim 6 or 7, characterized in that:
the temperature of the padding liquor is room temperature;
the soaking time is 1-10 min;
in the padding liquid, the concentration of the dye is 5g/L-40g/L, preferably 10g/L-30 g/L;
the concentration of the dyeing auxiliary agent is 1g/L-50g/L, preferably 5g/L-30 g/L;
the color fixing agent is a surfactant (cationic type), a quaternary ammonium salt without surface activity, a resin type color fixing agent, a cross-linking color fixing agent or a formaldehyde-free color fixing agent;
the concentration of the color fixing agent is 1-50g/L, preferably 20-30g/L, and the color fixing agent is soaked for 1-10 min;
in the padder, the padder speed is controlled to be 35-45m/min, and the rolling pressure is controlled to be 0.18-0.25 MPa;
the specified rolling reduction may be: 50-80%, preferably 70-80%;
the padding dye liquor is: one-dipping one-rolling, two-dipping two-rolling or multi-dipping multi-rolling;
the padding retention rate of the fabric in the padding color fixing solution is as follows: 50-80%, preferably 70-80%;
the temperature of the steaming or baking is: 50-100 ℃, preferably 70-95 ℃; the time is as follows: 30s-30min, preferably 5min-20 min.
9. The method according to any one of claims 6-8, wherein: the reactive dye pad dyeing post treatment comprises the following steps: hot water washing, soaping, water washing and air drying;
hot water washing: washing with 50-80 deg.C hot water for 1-3 times;
washing with water: washing with water at room temperature for 1-3 times;
the soaping conditions are as follows: 1g/L-5g/L standard soap chips, bath ratio: soaping for 1: 5-15 at 50-80 ℃ for 1-10 min.
10. The method according to any one of claims 1-9, wherein:
the acid dye is selected from at least one of the following: azo acid dyes, anthraquinone acid dyes, triarylmethane acid dyes, xanthene acid dyes and nitro acid dyes;
the neutral dye is a 1:2 type metal complex dye in an acidic mordant-containing dye;
the reactive dye is a chloro-s-triazine reactive group reactive dye, a vinyl sulfone reactive group reactive dye, a multi-reactive group reactive dye, a bromo-acrylamide reactive group reactive dye, an epoxy reactive dye or an azide reactive dye;
the dyeing auxiliary agent is a pH regulator, a chinlon dyeing rate regulator and a protein fiber dyeing rate regulator;
the pH regulator is acid, alkali, acid oxide, alkali oxide, weak acid strong alkali salt or strong acid weak alkali salt;
the polyamide dyeing rate regulator is peregal O, a leveling agent JV-905, a leveling agent JV-1, a leveling agent SET, a leveling agent HJ-219, a leveling agent NL, a slow-dyeing agent NLJ, a slow-dyeing agent NLJ-287, a dye-blocking agent RF and a dye-blocking agent FK-450A;
the protein fiber dyeing rate regulator is an accelerating agent TGR-M, an accelerating agent WDS, an accelerating agent KD, an accelerating agent WDP, an accelerating agent W-201, an accelerating agent DW or anhydrous sodium sulphate.
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| CN112391856A (en) * | 2020-10-27 | 2021-02-23 | 武汉纺织大学 | Method for resist dyeing of nylon fiber and protein powder |
| CN112609477A (en) * | 2020-12-03 | 2021-04-06 | 绵阳佳禧印染有限责任公司 | Continuous pad dyeing process for nylon 66 fabric |
| CN114182547A (en) * | 2021-12-21 | 2022-03-15 | 青岛大学 | Short-process cleaning and dyeing method for chinlon/silk mixed fabric |
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| CN112609477A (en) * | 2020-12-03 | 2021-04-06 | 绵阳佳禧印染有限责任公司 | Continuous pad dyeing process for nylon 66 fabric |
| CN114182547A (en) * | 2021-12-21 | 2022-03-15 | 青岛大学 | Short-process cleaning and dyeing method for chinlon/silk mixed fabric |
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