CN116926970A - Dyeing method of high-density nylon woven fabric - Google Patents

Dyeing method of high-density nylon woven fabric Download PDF

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CN116926970A
CN116926970A CN202210373476.4A CN202210373476A CN116926970A CN 116926970 A CN116926970 A CN 116926970A CN 202210373476 A CN202210373476 A CN 202210373476A CN 116926970 A CN116926970 A CN 116926970A
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dyeing
woven fabric
nylon woven
density nylon
ceramic powder
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王红恩
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Shengshan Group Co ltd
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Shengshan Group Co ltd
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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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
    • D06B23/20—Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
    • D06B23/20—Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation
    • D06B23/22—Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation for heating
    • 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
    • D06P1/46—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 using compositions containing natural macromolecular substances or derivatives thereof
    • D06P1/48—Derivatives of carbohydrates
    • 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
    • D06P1/52—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 using compositions containing synthetic macromolecular substances
    • D06P1/5207—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • D06P1/5214—Polymers of unsaturated compounds containing no COOH groups or functional derivatives thereof
    • D06P1/5228—Polyalkenyl alcohols, e.g. PVA
    • 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
    • D06P1/64—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 using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/651—Compounds without nitrogen
    • D06P1/65106—Oxygen-containing compounds
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    • 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
    • D06P1/67383—Inorganic compounds containing silicon
    • 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
    • D06P3/02—Material containing basic nitrogen
    • D06P3/04—Material containing basic nitrogen containing amide groups
    • D06P3/24—Polyamides; Polyurethanes
    • D06P3/241—Polyamides; Polyurethanes using acid dyes
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    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B2700/00—Treating of textile materials, e.g. bleaching, dyeing, mercerising, impregnating, washing; Fulling of fabrics
    • D06B2700/36—Devices or methods for dyeing, washing or bleaching not otherwise provided for
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
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  • Molecular Biology (AREA)
  • Inorganic Chemistry (AREA)
  • Coloring (AREA)

Abstract

The invention relates to the technical field of nylon fabric dyeing methods, and discloses a dyeing method of a high-density nylon woven fabric, which comprises the following steps: immersing the high-density nylon woven fabric into an acid dye solution for dyeing, adjusting the pH to 3.5-5, and adopting staged heat preservation treatment, wherein the heat preservation is carried out for 10-20 min at 70-80 ℃, 20-30 min at 90-100 ℃ and 45-55 min at 110-120 ℃ in sequence. The staged heat preservation treatment of the acid dye is beneficial to level dyeing and cover dyeing of the dye, so that the color ratio of the dye is improved, and the color fastness is also improved; the stepped heating is adopted to ensure the uniformity of dye-uptake, so that the dyeing problems of colored flowers, colored willows and the like are avoided; by adopting the low bath ratio to obtain the high dye amount of the nylon fiber, the higher the dye amount on the nylon fiber is, the better the coloring rate of the fabric is.

Description

Dyeing method of high-density nylon woven fabric
Technical Field
The invention relates to the technical field of nylon fabric dyeing methods, in particular to a dyeing method of a high-density nylon woven fabric.
Background
The bags in the current market are various in variety and full of eyes, and the materials of the bags comprise leather, PU and the like. However, the leather trunk has a single style, is quite troublesome in later maintenance, depends on animal sources, and is expensive and has a complex animal skin treatment process. The PU case is generally obtained by adopting a coating fabric or a laminating fabric, but the fabrics are thick and heavy, and the problem of poor stripping performance possibly occurs between the fabrics and a resin film layer.
Therefore, nylon fibers are more suitable for use in bags from the viewpoint of environmental protection and practical factors such as abrasion resistance, tear resistance, lightweight, water repellency, and discoloration. Nylon fiber has good mechanical properties, heat resistance, abrasion resistance, flame retardance, chemical resistance and other properties, and bags made of woven fabrics woven by nylon fiber are popular with consumers. However, the high-density nylon case fabric has the problems of coloring, and the durability and the color fastness after coloring are difficult to be qualified, and the problems of high water consumption, high steam consumption, low production efficiency, high rejection rate and the like in the traditional dyeing production process are solved. The Chinese patent with publication number of CN111996808A discloses a production process of a light and thin high-strength luggage nylon fabric, which comprises the following steps: s1, preparing a surface fabric, wherein the surface fabric is made of 20D nylon ultra-light fabric, and the warp yarn is 40D/24F, the warp density is 180T, the weft yarn is 40D/24F and the weft density is 120T; s2, desizing the fabric; s3, dyeing the surface fabric to form color fabric; s4, performing clear water shaping on the dyed color cloth; s5, calendaring the front surface of the color cloth; s6, coating a first coating on the facing fabric; s7, coating a second coating on the surface fabric, specifically the surface fabric after the first coating, and coating the second coating on the front surface of the surface fabric. The dyeing process of the face fabric does not improve the dyeing problem of the nylon fabric, and the problems of uneven dyeing and poor durable color fastness still exist.
Disclosure of Invention
In order to solve the coloring problems of uneven coloring and poor durable color fastness of the high-density nylon woven fabric, the invention provides a dyeing method of the high-density nylon woven fabric, and the dyed nylon fabric has the excellent characteristics of high coloring rate and high color fastness and can also save energy and reduce consumption by optimizing the dyeing and heat-preserving treatment process.
The specific technical scheme of the invention is as follows: the invention provides a dyeing method of a high-density nylon woven fabric, which comprises the following steps: immersing the high-density nylon woven fabric into an acid dye solution for dyeing, adjusting the pH value to 3.5-5, adopting staged heat preservation treatment, and sequentially preserving heat at 70-80 ℃ for 10-20 min, 90-100 ℃ for 20-30 min and 110-120 ℃ for 45-55 min.
The simpler the molecular structure of the acid dye is, the smaller the relative molecular mass is, the larger the ratio of the water-soluble groups is, and the better the leveling property is. In the dyeing process, on one hand, the macromolecule chain segments are enabled to rotate through high-temperature treatment on the nylon fibers, tiny holes in the fibers are combined into larger holes, so that dye molecules penetrate into the nylon fibers along the continuously-changing holes, the combination of the dye molecules and the tail end amino groups of the nylon fibers is enhanced, and then the combination is carried out by stage-wise heat preservation treatment, so that the dye obtains certain mobility, the dye level dyeing and cover dyeing are facilitated, the dye color ratio is improved, the color ratio of the dye with color fastness is also improved, and the color fastness is further improved.
In addition, the dyeing conditions used are also particularly important in order to obtain a good degree of coloration. The dye adsorption quantity is greatly reduced along with the rise of the pH value of the dye liquor under the condition of a certain temperature, but the pH value is too low, so that the phthalein amino groups of the fiber are easy to adsorb H + Protons, forming positively charged-NH 3+ The problem of super equivalent adsorption is likely to occur, and the phenomenon of nylon fiber degradation occurs, so that the adsorption quantity of the fabric to the dye liquor can be ensured by controlling the pH value of the dye liquor to 3.5-5.
Preferably, the gram weight of the high-density nylon woven fabric is 300-400 g/m 2 。
Preferably, the acid dye liquor comprises an acid dye and acetic acid.
Preferably, the bath ratio at the time of dyeing is 1:4 to 6.
By adopting the low bath ratio to obtain the high dye amount of the nylon fiber, the higher the dye amount on the nylon fiber is, the better the coloring rate of the fabric is.
Preferably, the dyeing also adopts sectional heating; the sectional type intensification is: heating from room temperature to 60 ℃ at a rate of 2-3 ℃/min, heating from 60 ℃ to 70-80 ℃ at a rate of 1-1.5 ℃/min, preserving heat, heating from 70-80 ℃ to 80-100 ℃ at a rate of 1-2 ℃/min, preserving heat, heating from 80-100 ℃ to 110-120 ℃ at a rate of 0.5-1.5 ℃/min, preserving heat, and finally cooling from 110-120 ℃ to room temperature at a rate of-2 to-1 ℃/min.
Nylon fiber belongs to thermoplastic fiber, dye-uptake is very slow at low temperature, and when the glass transition temperature is higher than 60%, the fiber can expand sharply, dye-uptake is increased linearly, and at the moment, the temperature rising rate is too fast, so that dyeing problems such as colored flowers, colored willows and the like are easy to occur. Thus, a stepped temperature increase is employed to ensure uniformity of dye-uptake.
Preferably, the high-density nylon woven fabric further comprises surface pretreatment of the high-density nylon woven fabric before dyeing; the surface pretreatment comprises the following steps:
immersing the high-density nylon woven fabric in a mixed solution I of polyvinyl alcohol and water, carrying out heat preservation treatment at 70-90 ℃ for 20-50 min, adding epichlorohydrin and lignosulfonate, and stirring for 10-30 min; then taking out the fabric and drying, immersing the fabric in a mixed solution II of glacial acetic acid, citric acid and water, adding polydopamine coated nano ceramic powder, reacting for 30-60 min at 60-70 ℃, and then taking out the fabric again and drying.
The polyvinyl alcohol on the surface layer of the nylon fabric has good film forming property, and the hydroxyl groups which are rich in the polyvinyl alcohol can have good affinity with both the nylon fabric and the acid dye, so that the dyeing and coloring rate can be improved by virtue of Van der Waals force and hydrogen bonding. The added sulfonic acid group on the lignosulfonate can gradually reduce the pH value of the dye liquor, so that the nylon fiber can gradually release the terminal amino group, the ionic bond between the acid dye and the polyamide fiber is facilitated, the crosslinking effect between the polyvinyl alcohol and the lignosulfonate is realized through epichlorohydrin, and the bonding stability is improved. In addition, the nano ceramic powder can form a rough uneven surface on the surface layer of the nylon fabric, the dyeing efficiency is improved by increasing the specific surface area, and the nano ceramic powder also has better ultraviolet resistance, so that the added value of the nylon fabric can be increased, and the durability is improved. The polydopamine coated on the surface of the nano ceramic powder can provide amino ends to improve dyeing efficiency, and can also be combined with polyvinyl alcohol on the surface of nylon fabric through citric acid crosslinking, so that the combination stability of the nano ceramic powder is improved. Therefore, after the surface pretreatment of the high-density nylon woven fabric, the dyeing and coloring rate can be improved, so that the dyed fabric has high coloring rate and high color fastness.
Preferably, the molecular weight of the polyvinyl alcohol is 100000 ～ 130000, and the alcoholysis degree is 97-99%; the concentration of the polyvinyl alcohol in the mixed solution I is 10-14%; the mass ratio of the polyvinyl alcohol to the epichlorohydrin to the lignosulfonate is 1:0.05 to 0.1:0.2 to 0.5; the mass ratio of the glacial acetic acid, the citric acid, the water and the polydopamine coated nano ceramic powder is 0.1-1: 3-10: 80-120: 1 to 4.
The molecular weight of the polyvinyl alcohol and its concentration in the aqueous solution affect the viscosity and thus the film forming properties. The alcoholysis degree of the polyvinyl alcohol can influence the solubility of the polyvinyl alcohol in an aqueous solution, so that the effect of surface pretreatment of the fabric is further influenced, and the polyvinyl alcohol after film formation is not easy to be swelled or dissolved in the dyeing process under the influence of the alcoholysis degree and the polymerization degree, so that the higher coloring rate can be achieved. The mass ratio of the raw materials determines the cross-linking structure and the bonding stability, and the best surface pretreatment effect of the fabric can be achieved under the ratio.
Preferably, the preparation method of the polydopamine coated nano ceramic powder comprises the following steps: adding the nano ceramic powder into a mixed solution of dopamine hydrochloride, water and ammonia water, regulating the pH value to 8-9, stirring and reacting for 12-20 h at 20-40 ℃, and then sequentially filtering and drying to obtain the polydopamine coated nano ceramic powder.
Preferably, the grain size of the nano ceramic powder is 50-100 nm; the mass ratio of the nano ceramic powder to the dopamine hydrochloride is 1-2: 1.
the particle size of the nano ceramic powder can influence the coating property of polydopamine, the combination stability between substances exceeding the range can be reduced, more importantly, the particle size can influence the degree of roughness of the surface of the fabric, the smaller the particle size is, the weaker the effect of improving the dye coloring rate caused by the surface roughness is, the larger the particle size is, the dyeing uniformity can be influenced, and the appearance quality of the fabric is further influenced.
Compared with the prior art, the invention has the following advantages:
(1) The acid dye is subjected to the staged heat preservation treatment, so that the dye obtains certain mobility, the level dyeing and cover dyeing of the dye are facilitated, the color ratio of the dye is improved, and the color fastness is also improved;
(2) The stepped heating is adopted to ensure the uniformity of dye-uptake, so that the dyeing problems of colored flowers, colored willows and the like are avoided;
(3) By adopting the low bath ratio to obtain the high dye amount of the nylon fiber, the higher the dye amount on the nylon fiber is, the better the coloring rate of the fabric is.
Detailed Description
The invention is further described below with reference to examples.
General examples
A dyeing method of a high-density nylon woven fabric comprises the following steps: the gram weight is 300 to 400g/m 2 The high-density nylon woven fabric is immersed into acid dye liquor for dyeing, and the bath ratio is 1: 4-6, regulating pH to 3.5-5, heating from room temperature to 60 ℃ at a rate of 2-3 ℃/min, heating from 60 ℃ to 70-80 ℃ at a rate of 1-1.5 ℃/min, preserving heat for 10-20 min, heating from 70-80 ℃ to 80-100 ℃ at a rate of 1-2 ℃/min, preserving heat for 20-30 min, heating from 80-100 ℃ to 110-120 ℃ at a rate of 0.5-1.5 ℃/min, preserving heat for 45-55 min, and finally cooling from 110-120 ℃ to room temperature at a rate of-2 to-1 ℃/min. Wherein the acid dye solution comprises acid dye and acetic acid.
In addition, the high-density nylon woven fabric can also comprise surface pretreatment of the high-density nylon woven fabric before dyeing, and the method comprises the following steps:
preparing a mixed solution I with the concentration of 10-14% from polyvinyl alcohol with the molecular weight of 100000 ～ 130000 and the alcoholysis degree of 97-99% and water, then immersing the high-density nylon woven fabric in the mixed solution I, carrying out heat preservation treatment for 20-50 min at 70-90 ℃, adding epichlorohydrin and lignosulfonate, and stirring for 10-30 min, wherein the mass ratio of the polyvinyl alcohol to the epichlorohydrin to the lignosulfonate is 1:0.05 to 0.1:0.2 to 0.5; then taking out the fabric and drying, immersing the fabric in a mixed solution II of glacial acetic acid, citric acid and water, adding polydopamine coated nano ceramic powder, and reacting for 30-60 min at 60-70 ℃, wherein the mass ratio of the glacial acetic acid, the citric acid, the water and the polydopamine coated nano ceramic powder is 0.1-1: 3-10: 80-120: 1-4, and then taking out the fabric again and drying.
The preparation method of the polydopamine coated nano ceramic powder comprises the following steps: adding nano ceramic powder with the particle size of 50-100 nm into a mixed solution of dopamine hydrochloride, water and ammonia water, wherein the mass ratio of the nano ceramic powder to the dopamine hydrochloride is 1-2: 1, regulating the pH value to 8-9, stirring and reacting for 12-20 h at 20-40 ℃, and then sequentially filtering and drying to obtain the polydopamine coated nano ceramic powder.
Example 1
A dyeing method of a high-density nylon woven fabric comprises the following steps: will have a gram weight of 350g/m 2 The high-density nylon woven fabric is immersed into acid dye liquor for dyeing, and the bath ratio is 1:5, adjusting the pH to about 4.3, wherein the acid dye liquor comprises Yellow S-GL 0.2% o.w.f, black 2S-LD 3.0% o.w.f and acetic acid 0.4% o.w.f. And then heating and heat preservation treatment is carried out according to the following table 1, and the fabric is taken out and dried after the treatment is finished.
Table 1 parameters of the heat-up and heat-preservation treatment in example 1
Example 2
High-density nylonThe dyeing method of the woven fabric comprises the following steps: the gram weight is 385g/m 2 The high-density nylon woven fabric is immersed into acid dye liquor for dyeing, and the bath ratio is 1:5, adjusting the pH to about 4.3, wherein the acid dye liquor comprises Yellow S-GL 0.2% o.w.f, black 2S-LD 3.0% o.w.f and acetic acid 0.4% o.w.f. And then heating and heat preservation treatment is carried out according to the following table 2, and the fabric is taken out and dried after the treatment is finished.
Table 2 parameters of the heat-up and heat-preservation treatment in example 2
Sectional temperature Rate of temperature change Incubation temperature time
Room temperature-60 DEG C 2℃/min /
60℃—80℃ 1℃/min 80℃*15min
80℃—100℃ 1.5℃/min 100℃*30min
100℃—120℃ 1℃/min 120℃*50min
120 ℃ to room temperature -1℃/min /
Example 3
A dyeing method of a high-density nylon woven fabric comprises the following steps: will have a gram weight of 350g/m 2 The high-density nylon woven fabric is immersed into acid dye liquor for dyeing, and the bath ratio is 1:6, adjusting the pH to about 3.8, wherein the acid dye liquor comprises Yellow S-GL 0.2% o.w.f, black 2S-LD 3.0% o.w.f and acetic acid 0.4% o.w.f. And then heating and heat preservation treatment is carried out according to the following table 3, and the fabric is taken out and dried after the treatment is finished.
TABLE 3 temperature increasing and preserving treatment parameters in example 3
Sectional temperature Rate of temperature change Incubation temperature time
Room temperature-60 DEG C 2℃/min /
60℃—75℃ 1.5℃/min 75℃*15min
75℃—95℃ 1℃/min 95℃*25min
95℃—120℃ 0.5℃/min 120℃*45min
120 ℃ to room temperature -2℃/min /
Example 4
The difference from example 1 is that: the method also comprises a fabric surface pretreatment step.
A dyeing method of a high-density nylon woven fabric comprises the following steps:
polyvinyl alcohol with molecular weight of 110000 and alcoholysis degree of 98% and water are prepared into a mixed solution I with concentration of 12%, and then the gram weight of 350g/m 2 The high-density nylon woven fabric is immersed in the mixed solution I, is subjected to heat preservation treatment at 85 ℃ for 30min, is added with epoxy chloropropane and lignosulfonate and is stirred for 15min, and the mass ratio of polyvinyl alcohol to epoxy chloropropane to lignosulfonate is 1:0.07:0.3; then taking out the fabric and drying, immersing the fabric in a mixed solution II of glacial acetic acid, citric acid and water, adding polydopamine coated nano ceramic powder, and reacting for 35min at 70 ℃, wherein the mass ratio of the glacial acetic acid to the citric acid to the polydopamine coated nano ceramic powder is 0.2:5:100:2, taking out the fabric again and drying.
The preparation method of the polydopamine coated nano ceramic powder comprises the following steps: adding the nano ceramic powder with the average particle size of 60nm into a mixed solution of dopamine hydrochloride, water and ammonia water, wherein the mass ratio of the nano ceramic powder to the dopamine hydrochloride to the water is 1.5:1:100, ammonia water is used for regulating the pH value to 8-9, stirring is carried out at 30 ℃ for reaction for 18 hours, and then the polydopamine coated nano ceramic powder is obtained after filtration and drying are carried out sequentially.
Then, immersing the high-density nylon woven fabric subjected to surface pretreatment into an acid dye solution for dyeing, wherein the bath ratio is 1:5, adjusting the pH to about 4.3, wherein the acid dye liquor comprises Yellow S-GL 0.2% o.w.f, black 2S-LD 3.0% o.w.f and acetic acid 0.4% o.w.f. And then heating and heat preserving treatment is carried out according to the table 1, and the fabric is taken out and dried after the treatment is finished.
Example 5
The difference from example 1 is that: the method also comprises a fabric surface pretreatment step.
A dyeing method of a high-density nylon woven fabric comprises the following steps:
polyvinyl alcohol with molecular weight of 130000 and alcoholysis degree of 98% and water are prepared into a mixed solution I with concentration of 12%, and then the gram weight of 350g/m 2 The high-density nylon woven fabric is immersed in the mixed solution I and is subjected to heat preservation treatment at 75 ℃ for 40min, and then epoxy chloropropane and lignosulfonate are added and stirred for 30min, wherein the mass ratio of polyvinyl alcohol to epoxy chloropropane to lignosulfonate is 1:0.09:0.5; then taking out the fabric and drying, immersing the fabric in a mixed solution II of glacial acetic acid, citric acid and water, adding polydopamine coated nano ceramic powder, and reacting at 60 ℃ for 45min, wherein the mass ratio of the glacial acetic acid, the citric acid, the water and the polydopamine coated nano ceramic powder is 0.4:4:100:2, taking out the fabric again and drying.
The preparation method of the polydopamine coated nano ceramic powder comprises the following steps: adding nano ceramic powder with the average particle size of 75nm into a mixed solution of dopamine hydrochloride, water and ammonia water, wherein the mass ratio of the nano ceramic powder to the dopamine hydrochloride to the water is 1:1:100, ammonia water is used for regulating the pH value to 8-9, stirring is carried out at 20 ℃ for reaction for 20 hours, and then the polydopamine coated nano ceramic powder is obtained after filtration and drying are carried out sequentially.
Then, immersing the high-density nylon woven fabric subjected to surface pretreatment into an acid dye solution for dyeing, wherein the bath ratio is 1:5, adjusting the pH to about 4.3, wherein the acid dye liquor comprises Yellow S-GL 0.2% o.w.f, black 2S-LD 3.0% o.w.f and acetic acid 0.4% o.w.f. And then heating and heat preserving treatment is carried out according to the table 1, and the fabric is taken out and dried after the treatment is finished.
Comparative example 1
The difference from example 4 is that: no nano ceramic powder is added.
A dyeing method of a high-density nylon woven fabric comprises the following steps:
polyvinyl alcohol with molecular weight of 110000 and alcoholysis degree of 98% and water are prepared into a mixed solution I with concentration of 12%, and then the gram weight of 350g/m 2 The high-density nylon woven fabric is immersed in the mixed solution I, is subjected to heat preservation treatment at 85 ℃ for 30min, is added with epoxy chloropropane and lignosulfonate and is stirred for 15min, and the mass ratio of polyvinyl alcohol to epoxy chloropropane to lignosulfonate is 1:0.07:0.3, then the fabric is taken out and dried.
Then, immersing the high-density nylon woven fabric subjected to surface pretreatment into an acid dye solution for dyeing, wherein the bath ratio is 1:5, adjusting the pH to about 4.3, wherein the acid dye liquor comprises Yellow S-GL 0.2% o.w.f, black 2S-LD 3.0% o.w.f and acetic acid 0.4% o.w.f. And then heating and heat preserving treatment is carried out according to the table 1, and the fabric is taken out and dried after the treatment is finished.
Comparative example 2
The difference from example 4 is that: the molecular weight of the added polyvinyl alcohol is 200000.
A dyeing method of a high-density nylon woven fabric comprises the following steps:
polyvinyl alcohol with molecular weight of 200000 and alcoholysis degree of 98% and water are prepared as a mixed solution I with concentration of 12%, and then the gram weight of 350g/m 2 The high-density nylon woven fabric is immersed in the mixed solution I, is subjected to heat preservation treatment at 85 ℃ for 30min, is added with epoxy chloropropane and lignosulfonate and is stirred for 15min, and the mass ratio of polyvinyl alcohol to epoxy chloropropane to lignosulfonate is 1:0.07:0.3; then taking out the fabric and drying, immersing the fabric in a mixed solution II of glacial acetic acid, citric acid and water, adding polydopamine coated nano ceramic powder, and reacting for 35min at 70 ℃, wherein the mass ratio of the glacial acetic acid to the citric acid to the polydopamine coated nano ceramic powder is 0.2:5:100:2, taking out the fabric again and drying.
The preparation method of the polydopamine coated nano ceramic powder comprises the following steps: adding the nano ceramic powder with the average particle size of 60nm into a mixed solution of dopamine hydrochloride, water and ammonia water, wherein the mass ratio of the nano ceramic powder to the dopamine hydrochloride to the water is 1.5:1:100, ammonia water is used for regulating the pH value to 8-9, stirring is carried out at 30 ℃ for reaction for 18 hours, and then the polydopamine coated nano ceramic powder is obtained after filtration and drying are carried out sequentially.
Then, immersing the high-density nylon woven fabric subjected to surface pretreatment into an acid dye solution for dyeing, wherein the bath ratio is 1:5, adjusting the pH to about 4.3, wherein the acid dye liquor comprises Yellow S-GL 0.2% o.w.f, black 2S-LD 3.0% o.w.f and acetic acid 0.4% o.w.f. And then heating and heat preserving treatment is carried out according to the table 1, and the fabric is taken out and dried after the treatment is finished.
Comparative example 3
The difference from example 4 is that: the alcoholysis degree of the added polyvinyl alcohol was 88%.
A dyeing method of a high-density nylon woven fabric comprises the following steps:
polyvinyl alcohol with molecular weight of 110000 and alcoholysis degree of 88% and water are prepared into a mixed solution I with concentration of 12%, and then the gram weight of 350g/m 2 The high-density nylon woven fabric is immersed in the mixed solution I, is subjected to heat preservation treatment at 85 ℃ for 30min, is added with epoxy chloropropane and lignosulfonate and is stirred for 15min, and the mass ratio of polyvinyl alcohol to epoxy chloropropane to lignosulfonate is 1:0.07:0.3; then taking out the fabric and drying, immersing the fabric in a mixed solution II of glacial acetic acid, citric acid and water, adding polydopamine coated nano ceramic powder, and reacting for 35min at 70 ℃, wherein the mass ratio of the glacial acetic acid to the citric acid to the polydopamine coated nano ceramic powder is 0.2:5:100:2, taking out the fabric again and drying.
The preparation method of the polydopamine coated nano ceramic powder comprises the following steps: adding the nano ceramic powder with the average particle size of 60nm into a mixed solution of dopamine hydrochloride, water and ammonia water, wherein the mass ratio of the nano ceramic powder to the dopamine hydrochloride to the water is 1.5:1:100, ammonia water is used for regulating the pH value to 8-9, stirring is carried out at 30 ℃ for reaction for 18 hours, and then the polydopamine coated nano ceramic powder is obtained after filtration and drying are carried out sequentially.
Then, immersing the high-density nylon woven fabric subjected to surface pretreatment into an acid dye solution for dyeing, wherein the bath ratio is 1:5, adjusting the pH to about 4.3, wherein the acid dye liquor comprises Yellow S-GL 0.2% o.w.f, black 2S-LD 3.0% o.w.f and acetic acid 0.4% o.w.f. And then heating and heat preserving treatment is carried out according to the table 1, and the fabric is taken out and dried after the treatment is finished.
Comparative example 4
The difference from example 4 is that: the grain size of the nano ceramic powder is 300nm.
A dyeing method of a high-density nylon woven fabric comprises the following steps:
polyvinyl alcohol with molecular weight of 110000 and alcoholysis degree of 98% and water are prepared into a mixed solution I with concentration of 12%, and then the gram weight of 350g/m 2 The high-density nylon woven fabric is immersed in the mixed solution I, is subjected to heat preservation treatment at 85 ℃ for 30min, is added with epoxy chloropropane and lignosulfonate and is stirred for 15min, and the mass ratio of polyvinyl alcohol to epoxy chloropropane to lignosulfonate is 1:0.07:0.3; then taking out the fabric and drying, immersing the fabric in a mixed solution II of glacial acetic acid, citric acid and water, adding polydopamine coated nano ceramic powder, and reacting for 35min at 70 ℃, wherein the mass ratio of the glacial acetic acid to the citric acid to the polydopamine coated nano ceramic powder is 0.2:5:100:2, taking out the fabric again and drying.
The preparation method of the polydopamine coated nano ceramic powder comprises the following steps: adding the nano ceramic powder with the average particle size of 300nm into a mixed solution of dopamine hydrochloride, water and ammonia water, wherein the mass ratio of the nano ceramic powder to the dopamine hydrochloride to the water is 1.5:1:100, ammonia water is used for regulating the pH value to 8-9, stirring is carried out at 30 ℃ for reaction for 18 hours, and then the polydopamine coated nano ceramic powder is obtained after filtration and drying are carried out sequentially.
Then, immersing the high-density nylon woven fabric subjected to surface pretreatment into an acid dye solution for dyeing, wherein the bath ratio is 1:5, adjusting the pH to about 4.3, wherein the acid dye liquor comprises Yellow S-GL 0.2% o.w.f, black 2S-LD 3.0% o.w.f and acetic acid 0.4% o.w.f. And then heating and heat preserving treatment is carried out according to the table 1, and the fabric is taken out and dried after the treatment is finished.
Performance testing
Fastness to rubbing: testing was performed according to standard GB/T3920-1997;
dye-uptake rate: the residual liquid method is used for measurement on a 723 type spectrophotometer, and the dye uptake at the time T is calculated: dye uptake E= [ (A) 0 -A T )/A 0 ]X 100%; wherein: a is that 0 Absorbance of the original solution; a is that T Absorbance of the residual dyeing liquid at the time T;
average ultraviolet transmittance: and testing the average transmittance of the high-density nylon woven fabric with the ultraviolet wavelength of 280-400 nm.
Table 4 dyeing properties of the high density nylon woven fabrics of each group
As shown in Table 1, the dyeing method of the invention can obtain nylon fabric with high dye uptake, ensures the uniformity of dye-uptake, avoids the dyeing problems of color flowers, color willows and the like, and improves the rubbing color fastness. In addition, in combination with examples 1-5, surface pretreatment of the fabric can further improve dye coloration rate and color fastness, which is achieved mainly by increasing specific surface area of the dye and interacting functional groups. In combination with the embodiment 4 and the comparative example 1, the dyeing is carried out only by the interaction of hydroxyl groups, sulfonic acid groups and terminal amino groups of nylon fibers on the surface of the fabric and dye molecules without adding nano ceramic powder, so that the dyeing rate and the ultraviolet-proof additional value are reduced. In combination with the embodiment 4 and the comparative examples 2-3, when the molecular weight of the polyvinyl alcohol is too large, the viscosity is too large, the film forming property and the loading effect of the nano ceramic powder can be affected, and the dye uptake and the color fastness are reduced; and the polyvinyl alcohol with low alcoholysis degree is easy to dissolve, and the phenomenon of unstable combination is easy to occur in the dyeing process, so that the dye-uptake rate is reduced. In combination with example 4 and comparative example 4, the particle size of the nano ceramic powder affects the coating property of polydopamine, and the bonding stability between substances exceeding the range is lowered, more importantly, the particle size affects the degree of roughness of the surface of the fabric, and the larger the particle size is, the dyeing uniformity and color fastness are both affected.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent transformation of the above embodiment according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.

Claims (9)

1. The dyeing method of the high-density nylon woven fabric is characterized by comprising the following steps of: immersing the high-density nylon woven fabric into an acid dye solution for dyeing, adjusting the pH value to 3.5-5, adopting staged heat preservation treatment, and sequentially preserving heat at 70-80 ℃ for 10-20 min, 90-100 ℃ for 20-30 min and 110-120 ℃ for 45-55 min.
2. The dyeing method of high-density nylon woven fabric according to claim 1, wherein the gram weight of the high-density nylon woven fabric is 300-400 g/m 2 。
3. The method for dyeing a high-density nylon woven fabric of claim 1, wherein the acid dye solution comprises an acid dye and acetic acid.
4. The method for dyeing a high-density nylon woven fabric according to claim 1, wherein the bath ratio at the time of dyeing is 1:4 to 6.
5. Dyeing method for high-density nylon woven fabric according to one of claims 1 to 4, characterized in that the dyeing also uses a sectional heating; the sectional type intensification is: heating from room temperature to 60 ℃ at a rate of 2-3 ℃/min, heating to 70-80 ℃ at a rate of 1-1.5 ℃/min, preserving heat, heating to 80-100 ℃ at a rate of 1-2 ℃/min, preserving heat, heating to 110-120 ℃ at a rate of 0.5-1.5 ℃/min, preserving heat, and finally cooling to room temperature at a rate of-2 to-1 ℃/min.
6. The method of dyeing a high-density nylon woven fabric of claim 1, wherein the high-density nylon woven fabric further comprises a surface pretreatment of the high-density nylon woven fabric prior to dyeing; the surface pretreatment comprises the following steps:
immersing the high-density nylon woven fabric in a mixed solution I of polyvinyl alcohol and water, carrying out heat preservation treatment at 70-90 ℃ for 20-50 min, adding epichlorohydrin and lignosulfonate, and stirring for 10-30 min; then taking out the fabric and drying, immersing the fabric in a mixed solution II of glacial acetic acid, citric acid and water, adding polydopamine coated nano ceramic powder, reacting for 30-60 min at 60-70 ℃, and then taking out the fabric again and drying.
7. The dyeing method of high-density nylon woven fabric according to claim 6, wherein the molecular weight of the polyvinyl alcohol is 100000 ～ 130000 and the alcoholysis degree is 97-99%; the concentration of the polyvinyl alcohol in the mixed solution I is 10-14%; the mass ratio of the polyvinyl alcohol to the epichlorohydrin to the lignosulfonate is 1:0.05 to 0.1:0.2 to 0.5; the mass ratio of the glacial acetic acid, the citric acid, the water and the polydopamine coated nano ceramic powder is 0.1-1: 3-10: 80-120: 1 to 4.
8. The dyeing method of the high-density nylon woven fabric according to claim 6, wherein the preparation method of the polydopamine coated nano ceramic powder comprises the following steps: adding the nano ceramic powder into a mixed solution of dopamine hydrochloride, water and ammonia water, regulating the pH value to 8-9, stirring and reacting for 12-20 h at 20-40 ℃, and then sequentially filtering and drying to obtain the polydopamine coated nano ceramic powder.
9. The dyeing method of high-density nylon woven fabric according to claim 8, wherein the particle size of the nano ceramic powder is 50-100 nm; the mass ratio of the nano ceramic powder to the dopamine hydrochloride is 1-2: 1.
CN202210373476.4A 2022-04-11 2022-04-11 Dyeing method of high-density nylon woven fabric Pending CN116926970A (en)

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