CN111996819A - Printing auxiliary agent and preparation method thereof - Google Patents

Printing auxiliary agent and preparation method thereof Download PDF

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Publication number
CN111996819A
CN111996819A CN202010835545.XA CN202010835545A CN111996819A CN 111996819 A CN111996819 A CN 111996819A CN 202010835545 A CN202010835545 A CN 202010835545A CN 111996819 A CN111996819 A CN 111996819A
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parts
component
acrylate emulsion
biomass
citric acid
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杨洪峰
刘金华
姜振库
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Shaoxing Demei New Materials Co ltd
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Shaoxing Demei New Materials 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
    • D06P1/44—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
    • D06P1/5264—Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G81/00—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
    • C08G81/02—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C08G81/021—Block or graft polymers containing only sequences of polymers of C08C or C08F
    • 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
    • D06P1/46—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
    • D06P1/50—Derivatives of cellulose
    • 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
    • D06P1/525—Polymers of unsaturated carboxylic acids or functional derivatives thereof
    • 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
    • D06P1/65118—Compounds containing hydroxyl groups
    • 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
    • D06P1/653—Nitrogen-free carboxylic acids or their salts
    • D06P1/6533—Aliphatic, araliphatic or cycloaliphatic

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

The invention provides a printing auxiliary agent and a preparation method thereof, wherein the printing auxiliary agent comprises the following components in percentage by mass of 1: (10-15) mixing the component A and the component B, wherein the component A comprises the following raw materials in parts by weight: 30-50 parts of acrylate emulsion and 50-70 parts of ethylene-vinyl acetate copolymer; the component B comprises the following raw materials in parts by weight: 10-15 parts of citric acid chelated zinc water solution with the mass fraction of 0.5-2%, 20-35 parts of ethanol, 5-8 parts of white vinegar, 15-25 parts of chitosan, 34-45 parts of citric acid water solution with the mass fraction of 20-30%, 30-45 parts of acrylate emulsion, 0-1 part of biomass thickener, 5-8 parts of biomass emulsifier and 5-10 parts of initiator; the acrylate emulsion in the component A and the acrylate emulsion in the component B are the same room temperature self-crosslinking acrylate emulsion. The printing auxiliary agent provided by the invention has good cohesive force and diffusivity, good color fastness and uneven coloring.

Description

Printing auxiliary agent and preparation method thereof
Technical Field
The invention relates to the technical field of textile printing and dyeing auxiliaries, in particular to a printing auxiliary and a preparation method thereof.
Background
The printing auxiliary agent is used for firmly adhering insoluble raw dye to the fabric by virtue of the film forming effect of the adhesive. The printing auxiliary agent mainly comprises the components of an adhesive, a thickening agent, a cross-linking agent, an emulsifying agent, a softening agent, a dispersing agent, a defoaming agent and the like, and the components promote the expansion of the fiber and promote the opening of pores in an amorphous area in the fiber in the expansion process of the fiber, so that the dye and the small molecular auxiliary agent can enter the fiber to complete printing and dyeing processing. In order to accelerate the diffusion and fixation of the reactive dye into the fiber, the printing auxiliary must have both good diffusivity on the fabric and good adhesion. Most of the existing printing auxiliaries have good diffusivity, weak cohesive force and poor color fastness, so that printed patterns are easy to lose color, fade and bleed; many of the adhesive force is strong, and the diffusibility is poor, the coloring is uneven, and it is difficult to achieve a certain balance between the diffusibility and the adhesive force.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a printing auxiliary and a preparation method thereof.
The technical scheme of the invention is realized as follows:
a printing auxiliary agent comprises the following components in a mass ratio of 1: (10-15) mixing the component A and the component B, wherein the component A comprises the following raw materials in parts by weight: 30-50 parts of acrylate emulsion and 50-70 parts of ethylene-vinyl acetate copolymer;
the component B comprises the following raw materials in parts by weight: 10-15 parts of citric acid chelated zinc water solution with the mass fraction of 0.5-2%, 20-35 parts of ethanol, 5-8 parts of white vinegar, 15-25 parts of chitosan, 34-45 parts of citric acid water solution with the mass fraction of 20-30%, 30-45 parts of acrylate emulsion, 0-1 part of biomass thickener, 5-8 parts of biomass emulsifier and 5-10 parts of initiator;
the acrylate emulsion in the component A and the acrylate emulsion in the component B are the same room temperature self-crosslinking acrylate emulsion.
The preparation operation is as follows:
the method comprises the following steps: preparation of component A: firstly, pre-irradiating ethylene-vinyl acetate copolymer by beta rays in an air atmosphere by using an electron accelerator, wherein the pre-irradiation dose is 10-20kGy, the pre-irradiation time is 15-20min, then adding acrylate emulsion into the pre-irradiation dose, and polymerizing for at least 30min at 80-82 ℃ under the condition of continuous stirring; the ethylene-vinyl acetate copolymer has viscosity and good flexibility, can generate macromolecular peroxide after pre-irradiation, can be used as an initiator in polymerization reaction, so that the macromolecular peroxide is grafted with partial monomers in the acrylate emulsion, and the grafted product can obviously improve the toughness, elasticity and impact resistance of the emulsion after curing;
step two: preparation of component B: respectively preparing the metered aqueous solution of the zinc citrate chelate and the metered aqueous solution of the citric acid, uniformly mixing the aqueous solutions, sequentially adding the chitosan, the biomass thickener and the biomass emulsifier, uniformly stirring, then adding the ethanol and the white vinegar, and finally adding the mixed solution and the initiator into the acrylate emulsion and uniformly stirring;
step three: and (3) mixing the component A and the component B according to the amount, uniformly stirring, and polymerizing for at least 30min at 82-85 ℃ under continuous stirring to generate the zinc ion crosslinked acrylic acid ionomer emulsion. The acrylic ionomer emulsion has good cohesiveness, proper consistency (the use requirement can be met even though no thickener is additionally added), and good diffusivity, the excessive acrylic emulsion in the component B is used as a dispersion promoter, so that the dispersion time can be further shortened, the generated acrylic ionomer emulsion can be timely and quickly diffused and fixed into fibers, the flocculation or sedimentation of the obtained acrylic ionomer emulsion is prevented, a good diffusion basis is provided for dyes, the printing gloss can be improved, and the color development property and the color tone property are improved. In addition, the citrate can also be complexed with metal cations in water, and has the effects of softening water quality, improving tinting strength, increasing dyeing uniformity and the like. In practice, it is surprisingly found that the finally generated printing auxiliary agent has poor color fixing and protecting effects, peculiar smell, poor adhesive force and diffusivity and poor satisfaction for improving the printing effect by adding ethanol, white vinegar, chitosan, a biomass thickener and a biomass emulsifier. According to the addition sequence proposed by the invention: firstly, sequentially adding chitosan, a biomass thickener and a biomass emulsifier, uniformly stirring, then adding ethanol and white vinegar, finally adding the mixed solution and an initiator into an acrylate emulsion, uniformly stirring, and then carrying out polymerization reaction with the component A, wherein the finally obtained product has good color fixing and protecting effects and almost no peculiar smell, so that the change of the adding sequence of each component in the production process can cause unexpected influence, and the synergistic effect among the components is step-by-step and ring-by-ring and can not be changed in any sequence.
Preferably, in the component A, the ethylene-vinyl acetate copolymer is 10 to 15 mass percent of vinyl acetate. If the mass fraction of the ethylene-vinyl acetate copolymer is too large, the viscosity of the finally produced acrylic acid ionomer emulsion is high, and the diffusibility thereof is affected.
Preferably, in component B, the biomass thickener is at least one of crosslinked starch or crosslinked cellulose, and the biomass emulsifier is at least one of soapnut saponin, sophorolipid, rhamnolipid, and cardanol. The addition of the crosslinked starch or/and the crosslinked cellulose can further improve the stability and the viscosity of the product.
More preferably, the mass ratio of the initiator is 1: (0.5-0.8) the mixture of ammonium persulfate and potassium persulfate can initiate polymerization reaction at 82-85 ℃, the two initiators participate in copolymerization crosslinking reaction together, the influence of high temperature generated by exothermic reaction on the copolymerization rate can be obviously weakened, the heat release is reduced, the slow-release crosslinking reaction is rapid, and the generated acrylic acid ionomer emulsion is rapidly diffused in the gaps of the fabric, gradually superposed and firmly attached to the fabric and is not easy to strip.
Most preferably, the acrylate emulsion is purchased from Shanghai Jieshi optimization technology, Inc. product number D-5045, 35% by weight.
Compared with the prior art, the printing auxiliary agent provided by the invention has good adhesion and diffusivity, can promote the dye to disperse into the fiber even at low temperature, greatly improves the color fastness and saturation, uniformly colors the treated fabric, has small dye consumption and does not need rinsing, and reduces the water consumption and the generation of waste water.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The use method of the following printing auxiliary agents comprises the following steps: and (3) mixing the dye and the printing auxiliary agent according to the ratio of (10-20): 1, printing the fabric according to a conventional printing process, and then testing the fastness to washing, light and rubbing colors and the breaking strength of the fabric before and after printing. And (3) testing the color fastness performance: and (3) carrying out washing fastness, light fastness and rubbing color fastness tests on the printed fabric according to methods in GB 3921 (method for testing washing color fastness of textiles), GB 8428 (method for testing light color fastness of textiles) and GB/T-2008 (color fastness to rubbing test) of color fastness of textiles. And (3) testing the breaking strength: and (3) testing according to the requirements of GB/T3923.1-2013, and calculating to obtain the breaking strength change rate of the fabric before and after printing by using a constant-speed elongation tester.
Example 1
A printing auxiliary agent comprises the following components in a mass ratio of 1: 15, mixing the component A and the component B, wherein the component A comprises the following raw materials in parts by weight: 40 parts of acrylic ester emulsion and 70 parts of ethylene-vinyl acetate copolymer with the mass percentage of 10 percent;
the component B comprises the following raw materials in parts by weight: 10 parts of citric acid chelated zinc aqueous solution with the mass fraction of 1.2%, 35 parts of ethanol, 6 parts of white vinegar, 15 parts of chitosan, 40 parts of citric acid aqueous solution with the mass fraction of 30%, 30 parts of acrylate emulsion, 4 parts of sophorolipid, 4 parts of rhamnolipid and 8 parts of initiator, wherein the initiator is prepared from the following components in parts by mass: 0.5 of a mixture of ammonium persulfate and potassium persulfate;
the acrylate emulsions in the component A and the component B are purchased from Shanghai Jiu optimized engineering and technology Limited company, product model D-5045, and the mass percent is 35%.
The preparation method of the printing auxiliary agent comprises the following operation steps:
the method comprises the following steps: preparation of component A: firstly, pre-irradiating an ethylene-vinyl acetate copolymer by using beta rays in an air atmosphere by using an electron accelerator, wherein the pre-irradiation dose is 20kGy, the pre-irradiation time is 18min, then adding an acrylate emulsion into the pre-irradiation dose, and polymerizing for 30min at 82 ℃ under the condition of continuous stirring;
step two: preparation of component B: respectively preparing a citric acid chelated zinc aqueous solution and a citric acid aqueous solution, uniformly mixing, sequentially adding chitosan, sophorolipid and rhamnolipid, uniformly stirring, then adding ethanol and white vinegar, and finally adding the mixed solution and an initiator into an acrylate emulsion and uniformly stirring;
step three: component A and component B were mixed in metered amounts and polymerized for 30min at 85 ℃ with continuous stirring.
And (3) testing results: the printing auxiliary agent is suitable for yellow-purple dye, has good color enhancing and protecting effects on various fabrics such as cotton, hemp, silk, wool, terylene, chinlon, spandex and the like, has the color fastness to washing of a dyed fabric reaching level 4, the color fastness to light reaching level 6, and the breaking strength of the dyed fabric can be improved by 3.5%.
Example 2
A printing auxiliary agent comprises the following components in a mass ratio of 1: 12, mixing a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 30 parts of acrylic ester emulsion and 60 parts of ethylene-vinyl acetate copolymer with the mass percentage of 15 percent;
the component B comprises the following raw materials in parts by weight: 15 parts of citric acid chelated zinc water solution with the mass fraction of 0.5%, 30 parts of ethanol, 5 parts of white vinegar, 25 parts of chitosan, 34 parts of citric acid water solution with the mass fraction of 25%, 45 parts of acrylate emulsion, 0.5 part of crosslinked starch, 2 parts of soapberry saponin, 5 parts of sophorolipid and 10 parts of initiator, wherein the mass ratio of the initiator to the water solution is 1: 0.6 of a mixture of ammonium persulfate and potassium persulfate;
the acrylate emulsions in the component A and the component B are purchased from Shanghai Jiu optimized engineering and technology Limited company, product model D-5045, and the mass percent is 35%.
The preparation method of the printing auxiliary agent comprises the following operation steps:
the method comprises the following steps: preparation of component A: firstly, pre-irradiating an ethylene-vinyl acetate copolymer by beta rays in an air atmosphere by using an electron accelerator, wherein the pre-irradiation dose is 10kGy, the pre-irradiation time is 20min, then adding an acrylate emulsion into the pre-irradiation dose, and polymerizing for 40min at 84 ℃ under the condition of continuous stirring;
step two: preparation of component B: respectively preparing a zinc citrate chelate aqueous solution and a citric acid aqueous solution, uniformly mixing, sequentially adding chitosan, crosslinked starch, soapberry saponin and sophorolipid, uniformly stirring, then adding ethanol and white vinegar, and finally adding the mixed solution and an initiator into an acrylate emulsion and uniformly stirring;
step three: component A and component B were mixed in metered amounts and polymerized at 82 ℃ for 40min with continuous stirring.
And (3) testing results: the printing auxiliary agent is suitable for red-purple dye, has good color enhancing and protecting effects on various fabrics such as cotton, hemp, silk, wool, terylene, chinlon, spandex and the like, and can improve the color fastness to washing of the dyed fabric by 4 grades, the color fastness to light by 7 grades, and the breaking strength of the dyed fabric by 3.7 percent.
Example 3
A printing auxiliary agent comprises the following components in a mass ratio of 1: 10, mixing a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 50 parts of acrylic ester emulsion and 50 parts of ethylene-vinyl acetate copolymer with the mass percentage of 12 percent;
the component B comprises the following raw materials in parts by weight: 12 parts of citric acid chelated zinc water solution with the mass fraction of 2%, 20 parts of ethanol, 8 parts of white vinegar, 22 parts of chitosan, 45 parts of citric acid water solution with the mass fraction of 20%, 40 parts of acrylate emulsion, 0.2 part of crosslinked starch, 8 parts of cardanol and 6 parts of initiator, wherein the mass ratio of the initiator to the initiator is 1: 0.6 of a mixture of ammonium persulfate and potassium persulfate;
the acrylate emulsions in the component A and the component B are purchased from Shanghai Jiu optimized engineering and technology Limited company, product model D-5045, and the mass percent is 35%.
The preparation method of the printing auxiliary agent comprises the following operation steps:
the method comprises the following steps: preparation of component A: firstly, pre-irradiating an ethylene-vinyl acetate copolymer by using beta rays in an air atmosphere by using an electron accelerator, wherein the pre-irradiation dose is 15kGy, the pre-irradiation time is 16min, then adding an acrylate emulsion into the pre-irradiation dose, and polymerizing for 35min at 85 ℃ under the condition of continuous stirring;
step two: preparation of component B: respectively preparing a citric acid chelated zinc aqueous solution and a citric acid aqueous solution, uniformly mixing the citric acid chelated zinc aqueous solution and the citric acid aqueous solution, sequentially adding chitosan, crosslinked starch and cardanol, uniformly stirring, then adding ethanol and white vinegar, and finally adding the mixed solution and an initiator into an acrylate emulsion and uniformly stirring;
step three: component A and component B were mixed in metered amounts and polymerized at 83 ℃ for 35min with continuous stirring.
And (3) testing results: the printing auxiliary agent is suitable for blue-purple dye, has good color enhancing and protecting effects on various fabrics such as cotton, hemp, silk, wool, terylene, chinlon, spandex and the like, and can improve the color fastness to washing of a dyed fabric by 5 grades, the color fastness to light by 7 grades and the breaking strength of the dyed fabric by 3.9 percent.
Example 4
A printing auxiliary agent comprises the following components in a mass ratio of 1: 13, mixing a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 45 parts of acrylic ester emulsion and 55 parts of ethylene-vinyl acetate copolymer with the mass percentage of 14 percent;
the component B comprises the following raw materials in parts by weight: 13 parts of aqueous solution of citric acid chelated zinc with the mass fraction of 1.2%, 28 parts of ethanol, 7.5 parts of white vinegar, 17.6 parts of chitosan, 42 parts of aqueous solution of citric acid with the mass fraction of 25%, 33 parts of acrylate emulsion, 0.3 part of cross-linked cellulose, 5 parts of rhamnolipid and 7 parts of initiator, wherein the mass ratio of the initiator to the initiator is 1: 0.65 of a mixture of ammonium persulfate and potassium persulfate;
the acrylate emulsions in the component A and the component B are purchased from Shanghai Jiu optimized engineering and technology Limited company, product model D-5045, and the mass percent is 35%.
The preparation method of the printing auxiliary agent comprises the following operation steps:
the method comprises the following steps: preparation of component A: firstly, pre-irradiating an ethylene-vinyl acetate copolymer by using beta rays in an air atmosphere by using an electron accelerator, wherein the pre-irradiation dose is 12kGy, the pre-irradiation time is 18min, then adding an acrylate emulsion into the pre-irradiation dose, and polymerizing for 50min at 82 ℃ under the condition of continuous stirring;
step two: preparation of component B: respectively preparing a citric acid chelated zinc aqueous solution and a citric acid aqueous solution, uniformly mixing, sequentially adding chitosan, cross-linked cellulose and rhamnolipid, uniformly stirring, then adding ethanol and white vinegar, and finally adding the mixed solution and an initiator into an acrylate emulsion and uniformly stirring;
step three: component A and component B were mixed in metered amounts and allowed to polymerize for 30min at 85 ℃ with constant stirring.
And (3) testing results: the printing auxiliary agent is suitable for red-orange color series dyes, has good color enhancing and protecting effects on various fabrics such as cotton, hemp, silk, wool, terylene, chinlon, spandex and the like, has the color fastness to washing of 4-5 grades and the color fastness to light of 7 grades, and can improve the breaking strength of the dyed fabrics by 3.8 percent.
Example 5
A printing auxiliary agent comprises the following components in a mass ratio of 1: 15, mixing the component A and the component B, wherein the component A comprises the following raw materials in parts by weight: 30 parts of acrylic ester emulsion and 50 parts of ethylene-vinyl acetate copolymer with the mass percentage of 15 percent;
the component B comprises the following raw materials in parts by weight: 15 parts of citric acid chelated zinc water solution with the mass fraction of 2%, 35 parts of ethanol, 5 parts of white vinegar, 25 parts of chitosan, 45 parts of citric acid water solution with the mass fraction of 20%, 30 parts of acrylate emulsion, 1 part of cross-linked cellulose, 5 parts of sophorolipid and 10 parts of initiator, wherein the mass ratio of the initiator to the initiator is 1: 0.5 of a mixture of ammonium persulfate and potassium persulfate;
the acrylate emulsions in the component A and the component B are purchased from Shanghai Jiu optimized engineering and technology Limited company, product model D-5045, and the mass percent is 35%.
The preparation method of the printing auxiliary agent comprises the following operation steps:
the method comprises the following steps: preparation of component A: firstly, pre-irradiating an ethylene-vinyl acetate copolymer by using beta rays in an air atmosphere by using an electron accelerator, wherein the pre-irradiation dose is 20kGy, the pre-irradiation time is 15min, then adding an acrylate emulsion into the pre-irradiation dose, and polymerizing for 30min at 85 ℃ under the condition of continuous stirring;
step two: preparation of component B: respectively preparing a citric acid chelated zinc aqueous solution and a citric acid aqueous solution, uniformly mixing, sequentially adding chitosan, cross-linked cellulose and sophorolipid, uniformly stirring, then adding ethanol and white vinegar, and finally adding the mixed solution and an initiator into an acrylate emulsion and uniformly stirring;
step three: component A and component B were mixed in metered amounts and polymerized for 30min at 82 ℃ with continuous stirring.
And (3) testing results: the printing auxiliary agent is suitable for blue-purple dye, has good color enhancing and protecting effects on various fabrics such as cotton, hemp, silk, wool, terylene, chinlon, spandex and the like, has the color fastness to washing of 4-5 grades and the color fastness to light of 7 grades, and can improve the breaking strength of the dyed fabric by 3.5 percent.
Example 6
A printing auxiliary agent comprises the following components in a mass ratio of 1: 14, mixing a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 35 parts of acrylic ester emulsion and 65 parts of ethylene-vinyl acetate copolymer with the mass percent of 15 percent;
the component B comprises the following raw materials in parts by weight: 10 parts of citric acid chelated zinc water solution with the mass fraction of 2%, 25 parts of ethanol, 6 parts of white vinegar, 18 parts of chitosan, 35 parts of citric acid water solution with the mass fraction of 25%, 40 parts of acrylate emulsion, 0.5 part of cross-linked starch, 0.5 part of cross-linked cellulose, 8 parts of soapberry saponin and 5 parts of initiator, wherein the mass ratio of the initiator to the water solution is 1: 0.7 of a mixture of ammonium persulfate and potassium persulfate;
the acrylate emulsions in the component A and the component B are purchased from Shanghai Jiu optimized engineering and technology Limited company, product model D-5045, and the mass percent is 35%.
The preparation method of the printing auxiliary agent comprises the following operation steps:
the method comprises the following steps: preparation of component A: firstly, pre-irradiating an ethylene-vinyl acetate copolymer by beta rays in an air atmosphere by using an electron accelerator, wherein the pre-irradiation dose is 15kGy, the pre-irradiation time is 20min, then adding an acrylate emulsion into the pre-irradiation agent, and polymerizing for at least 30min at 82 ℃ under the condition of continuous stirring;
step two: preparation of component B: respectively preparing a zinc citrate chelate aqueous solution and a citric acid aqueous solution, uniformly mixing, sequentially adding chitosan, crosslinked starch, crosslinked cellulose and soapnut saponin, uniformly stirring, then adding ethanol and white vinegar, and finally adding the mixed solution and an initiator into an acrylate emulsion and uniformly stirring;
step three: the component A and the component B are mixed in a metered amount and polymerized for at least 30min at 85 ℃ under continuous stirring.
And (3) testing results: the printing auxiliary agent is suitable for yellow-green color series dyes, has good color enhancing and protecting effects on various fabrics such as cotton, hemp, silk, wool, terylene, chinlon, spandex and the like, has the color fastness to washing of a dyed fabric reaching 4-5 grade and the color fastness to light reaching 6 grade, and can improve the breaking strength of the dyed fabric by 3.7 percent.
Compared with the prior art, the printing auxiliary agent provided by the invention can assist the dye particles to rapidly disperse into the fabric only by a small addition amount, so that the color fastness and the saturation are obviously improved, the upper color ratio is up to 99.9%, the fastness can reach four levels, the dyeing can be carried out at one time, the mechanical strength of the fabric is enhanced, in addition, no peculiar smell exists, the rinsing is not needed, and the water consumption and the generation of waste water are reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein. The components or connections not specifically described in the present invention are conventional in the art. The front side, the rear side, the left side and the right side of the present invention are described for convenience of describing the structure thereof, and are not intended to limit the protection scope of the present invention.

Claims (6)

1. A printing auxiliary agent is characterized in that: comprises the following steps of: (10-15) mixing the component A and the component B, wherein the component A comprises the following raw materials in parts by weight: 30-50 parts of acrylate emulsion and 50-70 parts of ethylene-vinyl acetate copolymer;
the component B comprises the following raw materials in parts by weight: 10-15 parts of citric acid chelated zinc water solution with the mass fraction of 0.5-2%, 20-35 parts of ethanol, 5-8 parts of white vinegar, 15-25 parts of chitosan, 34-45 parts of citric acid water solution with the mass fraction of 20-30%, 30-45 parts of acrylate emulsion, 0-1 part of biomass thickener, 5-8 parts of biomass emulsifier and 5-10 parts of initiator;
the acrylate emulsion in the component A and the acrylate emulsion in the component B are the same room temperature self-crosslinking acrylate emulsion.
2. The printing aid according to claim 1, characterized in that: in the component A, the ethylene-vinyl acetate copolymer is 10 to 15 mass percent of vinyl acetate.
3. The printing aid according to claim 1, characterized in that: in the component B, the biomass thickener is at least one of cross-linked starch or cross-linked cellulose, and the biomass emulsifier is at least one of soapnut saponin, sophorolipid, rhamnolipid and cardanol.
4. The printing aid according to claim 1, characterized in that: in the component B, the initiator is prepared from the following components in a mass ratio of 1: (0.5-0.8) a mixture of ammonium persulfate and potassium persulfate.
5. The printing aid according to any one of claims 1 to 4, characterized in that: the acrylic ester emulsion is purchased from Shanghai Jiu optimization engineering and technology Limited company, and has the product model D-5045 of which the mass percent is 35%.
6. A process for the preparation of a printing aid according to any one of claims 1 to 4, characterized in that: the method comprises the following operation steps:
the method comprises the following steps: preparation of component A: firstly, pre-irradiating ethylene-vinyl acetate copolymer by beta rays in an air atmosphere by using an electron accelerator, wherein the pre-irradiation dose is 10-20kGy, the pre-irradiation time is 15-20min, then adding acrylate emulsion into the pre-irradiation dose, and polymerizing for at least 30min at 82-85 ℃ under the condition of continuous stirring;
step two: preparation of component B: respectively preparing a zinc citrate chelate aqueous solution and a citric acid aqueous solution, uniformly mixing the two solutions, sequentially adding chitosan, a biomass thickener and a biomass emulsifier, uniformly stirring, then adding ethanol and white vinegar, and finally adding the mixed solution and an initiator into an acrylate emulsion and uniformly stirring;
step three: the component A and the component B are mixed according to the metering, and polymerized for at least 30min at 82-85 ℃ under continuous stirring.
CN202010835545.XA 2020-08-19 2020-08-19 Printing auxiliary agent and preparation method thereof Pending CN111996819A (en)

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