CN113665182A - Preparation method of water-repellent antibacterial coated fabric - Google Patents

Preparation method of water-repellent antibacterial coated fabric Download PDF

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Publication number
CN113665182A
CN113665182A CN202110695150.9A CN202110695150A CN113665182A CN 113665182 A CN113665182 A CN 113665182A CN 202110695150 A CN202110695150 A CN 202110695150A CN 113665182 A CN113665182 A CN 113665182A
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China
Prior art keywords
water
repellent
antibacterial
layer
cloth
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Pending
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CN202110695150.9A
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Chinese (zh)
Inventor
陈柏华
陈晓霞
朱敏丰
寿红伟
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Zhejiang Jiaheng Textile Technology Co ltd
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Zhejiang Jiaheng Textile Technology Co ltd
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Priority to CN202110695150.9A priority Critical patent/CN113665182A/en
Publication of CN113665182A publication Critical patent/CN113665182A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/08—Impregnating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/162—Cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/164—Drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic System
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
    • D06M11/55—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
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    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/83—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
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    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
    • D06M15/03—Polysaccharides or derivatives thereof
    • D06M15/05—Cellulose or derivatives thereof
    • D06M15/09—Cellulose ethers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
    • D06M15/03—Polysaccharides or derivatives thereof
    • D06M15/13—Alginic acid or derivatives thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0013—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using multilayer webs
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
    • D—TEXTILES; PAPER
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    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
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    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/128—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with silicon polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B32B2037/243—Coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/73—Hydrophobic
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    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/02—Natural fibres, other than mineral fibres
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    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/10—Repellency against liquids
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    • D06N2209/00—Properties of the materials
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  • Textile Engineering (AREA)
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  • Dispersion Chemistry (AREA)
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  • General Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
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  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

The invention provides a preparation method of waterproof antibacterial coated fabric, and belongs to the technical field of coated fabric. The invention comprises a base cloth layer, an adhesive layer, an antibacterial layer and a waterproof surface layer which are arranged from inside to outside in sequence. The preparation method enables the composite cloth to have an antibacterial effect through the compounding of the base cloth and the antibacterial cloth. Meanwhile, the hot melt adhesive net film is used for bonding, so that the bonding is firm and water washing resistant; the waterproof coating on the composite cloth can be accurately controlled, is simple to operate and can be produced in large batch; the addition of siloxane in the waterproof coating enables the waterproof coating to have excellent hydrophobic and oleophobic properties. The preparation method is simple, the process is controllable, the production cost is low, and the method has potential development prospect.

Description

Preparation method of water-repellent antibacterial coated fabric
Technical Field
The invention belongs to the technical field of coated cloth, and particularly relates to a preparation method of water-repellent antibacterial coated cloth.
Background
In the production process of the fabric, a large number of different types of fabrics are required, but different choices can be made according to the specific technical requirements of the fabric. In recent years, with the improvement of living standard of materials, people have no longer focused on the sense organ effects such as the wearing feeling, the appearance shape of clothes and the like or have more functional requirements on clothes instead of the requirements on the clothes such as heat preservation, wear resistance, comfort and the like.
Most of water-repellent fabrics commonly used in the market at present have poor water repellency, and the air permeability of the fabrics is poor, so that sweat discharged from skin cannot be discharged out of clothes, the air in the fabrics is moist and hot, bacteria are easily bred in the environment for a long time, and certain harm can be caused to users or the environment. There are many researches on water repellent fabrics, and there are three solutions: water repellent treated high density fabrics, laminated fabrics and coated fabrics. The three modes are widely applied particularly due to low cost of the coated fabric and simple production process. The coated fabric is usually compounded by a high-molecular water-repellent breathable material PTFE film and cloth. Although the PTFE fabric has good water repellency and moisture permeability, the PTFE fabric generally has poor hand feeling, poor washing fastness and wind resistance, and particularly cannot be naturally degraded easily, and the combustion temperature is high, so that the PTFE fabric can damage the environment. The fabric is usually used in a humid environment and has no bacteriostatic function.
In view of this, it is necessary to design a water-repellent antibacterial coated fabric to solve the problems of poor antibacterial and bacteriostatic effects and poor water-repellency of the existing fabric.
Disclosure of Invention
The invention aims to provide a preparation method of water-repellent antibacterial coated fabric, which aims to solve the problems of poor antibacterial and bacteriostatic effects and poor water-repellent performance of the existing fabric. The technology has the advantages of simple production process, controllable process, low production cost and potential development prospect.
The technical scheme of the invention is as follows:
the invention discloses a preparation method of water-repellent antibacterial coating cloth, which comprises a base cloth layer, an adhesive layer, an antibacterial layer and a water-repellent surface layer from inside to outside in sequence, wherein the preparation method comprises the following steps:
step 1, padding the base fabric layer in a sodium hydroxide solution, piling for 6-12 hours at the temperature of 60-80 ℃, washing with water, padding in a dilute sulfuric acid solution, piling for 3-6 hours, washing with water, and drying;
step 2, soaking the dried base cloth fabric in the antibacterial finishing agent for 6-8 hours, and drying the base cloth fabric in an oven for later use;
step 3, laying an adhesive layer on the base cloth layer obtained in the step 2, laying an antibacterial layer on the adhesive layer, and laminating for 0.5-1 hour at the temperature of 80-150 ℃ to form antibacterial composite cloth, wherein the antibacterial composite cloth bears the pressure of 10-30N;
step 4, applying a quantitative water-repellent coating adhesive to the surface of the antibacterial composite cloth in the step 3 on one side or two sides through a process flow of water-repellent finishing, coating finishing and water-repellent finishing to form a water-repellent surface layer; the additive of the water repellent coating glue comprises octamethylcyclotetrasiloxane, hexamethyldisiloxane, tetramethylammonium hydroxide, sodium alginate and sodium carboxymethylcellulose;
wherein, water repellent finish includes: two-dipping and two-rolling (water-repellent and oil-repellent finishing agent FK-510, 20g/L, and the rolling residue rate is 57%) → pre-baking → finishing.
Preferably, the concentration of the sodium hydroxide solution in the step 1 is 10-20 g/L, and the concentration of the dilute sulfuric acid is 4-6 g/L.
Preferably, the antimicrobial finish formulation of step 2 includes nano silver particles. The nano silver is a metal silver simple substance with the particle size of nano level. The particle size of the nano silver is mostly about 25 nanometers, and the nano silver has strong inhibiting and killing effects on dozens of pathogenic microorganisms such as escherichia coli, gonococcus, chlamydia trachomatis and the like, and can not generate drug resistance. For example, the cotton socks made of nano silver and combed cotton fiber have good antibacterial and deodorant effects.
Preferably, the water repellent finishing in the step 4 is pre-dried at 60-90 ℃ for 1-5min, finally the coated fabric is baked at 130-150 ℃ for 1-5min, and the water repellent finishing baking temperature after coating is 130 ℃, so as to prepare the water repellent coating.
Preferably, the thickness of the water-repellent coating is 0.5 to 2 mm.
Preferably, the adhesive layer has a gram weight of 6-100g/m2PA thermosol web of.
The invention has the beneficial effects that: through the combination of the base cloth and the antibacterial cloth, the composite cloth has an antibacterial effect. Meanwhile, the hot melt adhesive net film is used for bonding, so that the bonding is firm and water washing resistant; the water-repellent coating on the composite cloth is coated by a machine, so that the water-repellent cloth can be accurately controlled, is simple to operate and can be produced in large batch; the siloxane in the water repellent coating is added, so that the water repellent coating has excellent hydrophobic and oleophobic properties. The preparation method is simple, the process is controllable, the production cost is low, and the method has potential development prospect.
Detailed Description
The present invention will be further described with reference to specific examples, which are intended to clearly and completely describe the technical solutions in the examples of the present invention, and it should be understood that the described examples are only a part of the examples of the present invention, and not all of the examples. 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.
A preparation method of water-repellent antibacterial coating cloth comprises a base cloth layer, an adhesive layer, an antibacterial layer and a water-repellent surface layer from inside to outside in sequence, and comprises the following steps:
step 1, padding the base fabric layer in a sodium hydroxide solution, piling for 6-12 hours at the temperature of 60-80 ℃, washing with water, padding in a dilute sulfuric acid solution, piling for 3-6 hours, washing with water, and drying;
step 2, soaking the dried base cloth fabric in the antibacterial finishing agent for 6-8 hours, and drying the base cloth fabric in an oven for later use;
step 3, laying an adhesive layer on the base cloth layer obtained in the step 2, laying an antibacterial layer on the adhesive layer, and laminating for 0.5-1 hour at the temperature of 80-150 ℃ to form antibacterial composite cloth, wherein the antibacterial composite cloth bears the pressure of 10-30N;
step 4, applying a quantitative water-repellent coating adhesive to the surface of the antibacterial composite cloth in the step 3 on one side or two sides through a process flow of water-repellent finishing, coating finishing and water-repellent finishing to form a water-repellent surface layer;
wherein, water repellent finish includes: two-dipping and two-rolling (water-repellent and oil-repellent finishing agent FK-510, 20g/L, and the rolling residue rate is 57%) → pre-baking → finishing.
After the base cloth layer fabric is padded with alkali liquor, the base cloth layer fabric is piled up for 6 to 12 hours at the temperature of between 60 and 80 ℃; if the base fabric layer is cotton fabric, alkali or acid desizing can be used, and the method is that firstly, alkali liquor desizing is carried out, then, after washing, dilute sulfuric acid with the concentration of 4-6 g/L is padded for a plurality of hours, so that the starch is further hydrolyzed, and the function of washing off inorganic salt impurities in the cotton fiber is achieved. After washing, padding the fabric in a dilute sulfuric acid solution, piling for 3-6 hours, and then washing and drying the fabric to finish the desizing treatment of the base fabric layer, so as to prepare for the subsequent antibacterial finishing.
Preferably, the additive of the water repellent coating glue comprises octamethylcyclotetrasiloxane, hexamethyldisiloxane and tetramethylammonium hydroxide system. The method specifically comprises the following steps: pre-baking the water repellent finishing in the step 4 at 60-90 ℃ for 1-5min, baking the coated fabric at 150 ℃ for 1-5min, performing water repellent coating finishing, and then performing water repellent finishing at the baking temperature of 130 ℃.
The water-repellent coating is operated as follows:
weighing 1kg of antibacterial composite cloth subjected to water repellent finishing in the step 4, adding 2L of acetone into a reaction vessel at the same time, adding 210g of octamethylcyclotetrasiloxane and 120g of hexamethyldisiloxane into the reaction vessel, heating to 80 ℃, adding tetramethylammonium hydroxide into the reaction vessel, heating to 150 ℃, performing reflux reaction for 7 hours, filtering, washing and drying to obtain an antibacterial composite cloth layer with siloxane bonds; because the fiber surface net structure forming the antibacterial composite cloth layer uniformly contains siloxane bonds, and a large number of siloxane bonds are uniformly dispersed on the surface of the fiber, under the catalytic action of tetramethylammonium hydroxide, the siloxane bonds can be subjected to polymerization reaction with octamethylcyclotetrasiloxane and hexamethyldisiloxane on the surface of the fiber, so that the surface of the fiber is uniformly grafted and polymerized with a layer of long-chain silicon-oxygen chain, and a large number of grafted antibacterial particles are fully filled in gaps among the silicon-oxygen chain, and the long-chain silicon-oxygen chain and the antibacterial particles have high hydrophobic properties, so that the prepared product has high hydrophobic properties of combination of siloxane substances such as octamethylcyclotetrasiloxane, hexamethyldisiloxane, tetramethylammonium hydroxide and the like, and the fabric has a preliminary water repellent effect.
Furthermore, the additive of the water-repellent coating adhesive also comprises sodium alginate and sodium carboxymethyl cellulose. The sodium alginate contains hydrophilic groups to promote the transmission of water vapor from the inside to the outside of the fabric, and with the increase of the dosage of the additive, micropores are formed on the surface of the coated fabric, the more the micropores are formed, the larger the pore diameter is, and the moisture permeability of the fabric is facilitated; the addition of the sodium carboxymethyl cellulose additive is beneficial to forming micropores on the surface of the fabric, and the more the additive is, the more the formed micropores are, the larger the pore diameter is, and the moisture permeability of the fabric is improved. In addition, sodium carboxymethyl cellulose moleculesIn (2) contains-CH2Introduction of hydrophilic groups such as COONa and OH is beneficial to the transmission of water vapor from the inside to the outside of the fabric. In addition, sodium alginate and sodium carboxymethylcellulose are matched with a water-repellent finishing agent FK-510 in water-repellent finishing, so that the fabric has a good water-repellent moisture-permeable effect. The additive of the water repellent coating adhesive enables the water repellent coating adhesive to form a water repellent-moisture permeable system, and the application range of the fabric is widened.
Preferably, the concentration of the sodium hydroxide solution in the step 1 is 10-20 g/L, and the concentration of the dilute sulfuric acid is 4-6 g/L. Further, the antibacterial finishing agent formula of the step 2 comprises nano silver particles. And further, pre-baking the water repellent finishing in the step 4 at 60-90 ℃ for 1-5min, finally baking the coated cloth at 130-150 ℃ for 1-5min, and preparing the water repellent coating at the water repellent finishing baking temperature of 130 ℃ after coating. Further, the thickness of the water-repellent coating is 0.5 to 2 mm. Still further, the adhesive layer has a grammage of 6-100g/m2PA thermosol web of.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims (6)

1. The preparation method of the water-repellent antibacterial coating cloth is characterized in that the water-repellent antibacterial coating cloth comprises a base cloth layer, an adhesive layer, an antibacterial layer and a water-repellent surface layer from inside to outside in sequence, and the preparation method comprises the following steps:
step 1, padding the base fabric layer in a sodium hydroxide solution, piling for 6-12 hours at the temperature of 60-80 ℃, washing with water, padding in a dilute sulfuric acid solution, piling for 3-6 hours, washing with water, and drying;
step 2, soaking the dried base cloth fabric in the antibacterial finishing agent for 6-8 hours, and drying the base cloth fabric in an oven for later use;
step 3, laying an adhesive layer on the base cloth layer obtained in the step 2, laying an antibacterial layer on the adhesive layer, and laminating for 0.5-1 hour at the temperature of 80-150 ℃ to form antibacterial composite cloth, wherein the antibacterial composite cloth bears the pressure of 10-30N;
step 4, applying a quantitative water-repellent coating adhesive to the surface of the antibacterial composite cloth in the step 3 on one side or two sides through a process flow of water-repellent finishing, coating finishing and water-repellent finishing to form a water-repellent surface layer; the additive of the water repellent coating glue comprises octamethylcyclotetrasiloxane, hexamethyldisiloxane, tetramethylammonium hydroxide, sodium alginate and sodium carboxymethylcellulose;
wherein, water repellent finish includes: the second dipping and the second rolling → the pre-baking → the finishing, wherein the water-repellent and oil-repellent finishing agent FK-510 is added in the process of the second dipping and the second rolling, the concentration is 20g/L, and the rolling residue rate is 57 percent.
2. The process for producing a water-repellent antibacterial coated fabric according to claim 1, wherein the concentration of the sodium hydroxide solution in the step 1 is 10 to 20g/l, and the concentration of the dilute sulfuric acid is 4 to 6 g/l.
3. The method for preparing a water-repellent antibacterial coated fabric according to claim 1, wherein the antibacterial finishing agent formula of the step 2 comprises nano silver particles.
4. The preparation method of the water-repellent antibacterial coated fabric according to claim 1, wherein the water-repellent finish of the step 4 is pre-baked at 60-90 ℃ for 1-5min, and finally the coated fabric is baked at 130-150 ℃ for 1-5min, and the baking temperature of the water-repellent finish after coating is 130 ℃, so as to prepare the water-repellent coating.
5. The process for producing a water-repellent antibacterial coated fabric according to claim 4, wherein the thickness of the water-repellent coating layer is 0.5 to 2 mm.
6. The method for preparing a water-repellent antibacterial coated fabric according to claim 1, wherein the adhesive layer has a grammage6-100g/m2PA thermosol web of.
CN202110695150.9A 2021-06-23 2021-06-23 Preparation method of water-repellent antibacterial coated fabric Pending CN113665182A (en)

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Application publication date: 20211119