CN111543695A - Antibacterial mask and preparation method thereof - Google Patents

Antibacterial mask and preparation method thereof Download PDF

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Publication number
CN111543695A
CN111543695A CN202010332337.8A CN202010332337A CN111543695A CN 111543695 A CN111543695 A CN 111543695A CN 202010332337 A CN202010332337 A CN 202010332337A CN 111543695 A CN111543695 A CN 111543695A
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China
Prior art keywords
woven fabric
layer
antibacterial
hydrotalcite
polymer fiber
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CN202010332337.8A
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Chinese (zh)
Inventor
辛斌杰
严庆帅
谢翔宇
徐丽丽
李安琪
贺炎
刘露露
臧丽然
缪雅婧
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Shanghai University of Engineering Science
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Shanghai University of Engineering Science
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Priority to CN202010332337.8A priority Critical patent/CN111543695A/en
Publication of CN111543695A publication Critical patent/CN111543695A/en
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    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • A41D13/1192—Protective face masks, e.g. for surgical use, or for use in foul atmospheres with antimicrobial agent
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/02—Layered materials
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • A41D31/12—Hygroscopic; Water retaining
    • A41D31/125—Moisture handling or wicking function through layered materials
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • A41D31/30—Antimicrobial, e.g. antibacterial
    • A41D31/305—Antimicrobial, e.g. antibacterial using layered materials
    • 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
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1284—Application of adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
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    • 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
    • B32B5/08—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 the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
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    • 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
    • B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/022—Mechanical properties
    • 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
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/0007—Electro-spinning
    • D01D5/0015—Electro-spinning characterised by the initial state of the material
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D2500/00—Materials for garments
    • A41D2500/30—Non-woven
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0223—Vinyl resin fibres
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0276—Polyester fibres
    • B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/04—Cellulosic plastic fibres, e.g. rayon
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/14—Mixture of at least two fibres made of different materials
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/546—Flexural strength; Flexion stiffness
    • 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
    • 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
    • B32B2307/726—Permeability to liquids, absorption

Abstract

The invention provides an antibacterial mask and a preparation method thereof; this antibiotic gauze mask mainly includes: the first layer of non-woven fabric consists of fluoride, an antibacterial agent, a dispersing agent and a polymer fiber membrane, fluorine element has strong electron obtaining capability, so that charges are easy to accumulate on the surface of the fluoride, micro substances and germs are adsorbed, the antibacterial agent has strong antibacterial capability, and the fluoride and the antibacterial agent are mixed into the polymer fiber membrane, so that the antibacterial property is improved; the second layer of non-woven fabric is composed of a polymer fiber membrane containing hydrotalcite, the surface of the non-woven fabric is provided with hydrotalcite, and the surface of the hydrotalcite is provided with static charges which can adsorb micro substances; the third layer of non-woven fabric is a cellulose fiber film; the antibacterial mask can efficiently filter tiny substances and inhibit the growth of germs; in addition, the hydrotalcite layer is generated on the polymer fiber film by a hydrothermal method, and the method is simple and easy to prepare.

Description

Antibacterial mask and preparation method thereof
Technical Field
The invention belongs to the technical field of masks, and particularly relates to an antibacterial mask and a preparation method thereof.
Background
Chinese patent publication No. CN104383894A discloses a filtering material for a high-adsorptivity mask and a preparation method thereof, wherein the filtering material comprises hydrotalcite, ethyl silicate, tourmaline and other components. Hydrotalcite can increase fibrous membrane specific surface area, and hydrotalcite platelike structure has positive charge simultaneously and can adsorb the small-size material, improves the filter effect to the haze.
Chinese patent publication No. CN1384896A discloses a method of charging a web with a non-aqueous polar liquid. The main contents are as follows: the fluoride-containing non-conductive web is wetted with a non-aqueous polar liquid. The web is then sufficiently dried to produce an electret fibrous web. The electret fibrous web may be used as a filter in a filtering face mask that is adapted to fit over the nose and mouth of a wearer.
Mustard oil and horseradish both contain isothiocyanate, and some researchers prove that the isothiocyanate has an antibacterial function, so the mustard oil and horseradish are often used for preparing an antibacterial agent. Chinese patent publication No. CN108410081A discloses an antibacterial PVC glove and a method for manufacturing the same, and mustard oil is an active ingredient in the antibacterial finishing agent. Chinese patent publication No. CN109699685A discloses an invention relating to an antibacterial sheet, an antibacterial agent and applications thereof, in which horseradish has an antibacterial effect.
Through the analysis of the above patents, the nonwoven fabric layer with adsorption function and the nonwoven fabric layer with antibacterial function in the existing mask are separated, and there are disadvantages that the nonwoven fabric with adsorption function cannot inhibit the growth of bacteria on the surface of the nonwoven fabric to reduce the antibacterial property of the nonwoven fabric, and the nonwoven fabric with antibacterial function has no strong adsorption capability and thus the antibacterial property is not fully exerted.
Disclosure of Invention
Aiming at the defects in the prior art, the invention mainly aims to provide an antibacterial mask, which is mainly characterized in that a non-woven fabric with certain adsorbability and an antibacterial function is obtained by mixing fluoride and an antibacterial agent into fibers to spin a fiber membrane.
The second purpose of the invention is to provide a preparation method of the antibacterial mask.
In order to achieve the above primary object, the solution of the present invention is:
an antibacterial mask mainly comprises the following components from outside to inside in sequence: the first layer of non-woven fabric, the second layer of non-woven fabric and the third layer of non-woven fabric are compounded by an adhesive, and the tin bar and the bandage are also combined together by the adhesive and the three layers of non-woven fabrics.
Wherein, the first layer of non-woven fabric consists of fluoride, an antibacterial agent, a dispersing agent and a polymer fiber film; the first layer of non-woven fabric has the functions of adsorbing pathogenic bacteria and inhibiting the growth of pathogenic bacteria.
The second layer of nonwoven fabric consists of a polymer fiber film containing hydrotalcite; the second layer of non-woven fabric has the function of adsorbing micro substances and germs.
The third layer of non-woven fabric is a cellulose fiber film, and the third layer of non-woven fabric has good water absorption and softness.
As a preferred embodiment of the invention, in the first layer of non-woven fabric, the fluoride is fluorine-containing 2-oxazolidone, and is combined in the polymer fiber membrane in a blending spinning mode, and the content of the fluoride is 1-10 wt%; the antibacterial agent comprises chitosan and horseradish, wherein the content of the chitosan is 1-5 wt%, and the content of the horseradish is 1-5 wt%; the dispersant is tetrabutyl titanate with the content of 0.5-2 wt%; the polymer in the polymer fiber membrane is polyvinyl alcohol, and the content is 80-95 wt%.
As a preferred embodiment of the present invention, the hydrotalcite covered on the surface of the polymer fiber membrane in the second layer of non-woven fabric is magnesium aluminum carbonate type hydrotalcite.
As a preferred embodiment of the present invention, the magnesium aluminum carbonate type hydrotalcite has the molecular formula of Mg6Al2(OH)16CO3·4H2O, from Mg (NO)3)2·6H2O、Al(NO3)3·9H20. NaOH and anhydrous Na2CO3Synthesizing, wherein the molar ratio is (1-3): 1: (5-10): 1.
in the second layer of non-woven fabric, the polymer in the polymer fiber membrane is selected from more than one of polyacrylonitrile, polypropylene and terylene.
And growing hydrotalcite on the polymer fiber membrane by adopting a hydrothermal method on the second layer of non-woven fabric. The polymer fiber membrane is a membrane-shaped two-dimensional material formed by mutually intertwining fibers, has the advantage of small pores, can block micro substances, and can further reduce the pores of the polymer fiber membrane by generating hydrotalcite on the surface of the polymer fiber membrane, so that smaller substances can be filtered. In addition, the hydrotalcite is of a sheet structure, and the sheet layer has positive charges and can adsorb micro substances, so that the haze filtering effect is improved.
In order to achieve the second objective, the solution of the invention is:
the preparation method of the antibacterial mask comprises the following steps:
(1) mixing fluoride, an antibacterial agent, a dispersing agent and a polymer fiber membrane in a spinning solution, and then obtaining a first layer of non-woven fabric by a wet electrostatic spinning technology;
(2) generating hydrotalcite by a hydrothermal method, and coating the hydrotalcite on the surface of the polymer fiber membrane to obtain a second layer of non-woven fabric;
(3) combining the first layer of non-woven fabric, the second layer of non-woven fabric and the third layer of non-woven fabric into a whole by adopting an adhesive to obtain a composite non-woven fabric;
(4) cutting the composite non-woven fabric into small pieces;
(5) and bonding the tin bar, the bandage and the cut small blocks together by adopting an adhesive, and packaging to obtain the antibacterial mask.
As a preferred embodiment of the invention, in the step (1), in the spinning process, the solvent in the spinning solution is ethylene glycol and water, the ratio of the two is 7:3, and the content of the solvent is 50-75 wt%; the spinning voltage is 20-30KV, and the spinning distance is 150-300 mm.
As a preferred embodiment of the present invention, in step (2), Mg (NO) is used in the hydrothermal method3)2·6H2O、Al(NO3)3·9H20. NaOH and anhydrous Na2CO3In a molar ratio of (1-3):1: (5-10): 1, mixing Mg (NO)3)2·6H2O、Al(NO3)3·9H20. NaOH and anhydrous Na2CO3Sequentially putting into plasma water for mixing to obtain a mixed solution, soaking the polymer fiber membrane in the mixed solution at the temperature of 110-130 ℃ for 2-4h, and finally taking out the polymer fiber membrane for drying at the temperature of 50-80 ℃ for 20-40 min.
In step (3), the adhesive is an aqueous solution of polyvinyl alcohol, and the preparation process is as follows: at 85-97 deg.C, dissolving polyvinyl alcohol in water to obtain 6-12 wt% water solution, stirring, and cooling to room temperature.
Due to the adoption of the scheme, the invention has the beneficial effects that:
the first layer of non-woven fabric contains fluoride and an antibacterial agent, fluorine has strong electron-gaining capacity, so that charges are easy to accumulate on the surface of the fluoride, the charges can adsorb micro substances and germs, the surface of chitosan in the antibacterial agent has rich amino groups and has strong antibacterial capacity, horseradish contains isothiocyanate and has antibacterial capacity, and the fluoride and the antibacterial agent are mixed into a polymer fiber membrane to adsorb the germs and further inhibit the growth of the germs, so that the antibacterial performance of the mask is greatly improved.
Secondly, the surface of the second layer of non-woven fabric is provided with a layer of hydrotalcite, so that the space between fibers is reduced, the pores of a polymer fiber membrane are smaller, and the surface of the hydrotalcite is electrostatically charged to adsorb micro substances; the third layer of non-woven fabric is composed of a cellulose fiber film, the surface of cellulose macromolecules contains a large number of hydroxyl groups, and the hydroxyl groups can be combined with water molecules, so that the cellulose fiber film has good water absorption, cellulose fibers are easy to bend and twist, and the softness is good.
Thirdly, hydrotalcite is generated on the surface of the fiber net by a hydrothermal method, the generated hydrotalcite is concentrated on the surface of the fiber net, only part of the hydrotalcite prepared by the blended spinning method is concentrated on the surface of the fiber net, and the other part of the hydrotalcite is in the fiber net, so that the non-woven fabric containing the hydrotalcite generated by the hydrothermal method has higher adsorption effect on micro substances; in addition, the hydrothermal method for generating the hydrotalcite layer is simple in preparation method and high in production efficiency.
Drawings
Fig. 1 is a schematic view of a manufacturing process of the antibacterial mask of the present invention.
Fig. 2 is a schematic structural view of the antibacterial mask of the present invention.
FIG. 3 is a schematic diagram of a hydrothermal synthesis process of hydrotalcite according to an embodiment of the present invention.
Reference numerals: 1-first layer of non-woven fabric, 2-second layer of non-woven fabric, 3-third layer of non-woven fabric, 4-tin bar, 5-bandage, 6-cloth discharging roller, 7-first discharging port, 8-hydrothermal reaction tank, 9-guide roller, 10-first material cylinder, 11-second material cylinder, 12-third material cylinder, 13-fourth material cylinder, 14-water washing tank, 15-second discharging port, 16-drying device and 17-cloth rolling roller.
Detailed Description
The invention provides an antibacterial mask and a preparation method thereof.
< antibacterial mask >
As shown in fig. 2, the antibacterial mask of the present invention comprises a first layer of non-woven fabric 1, a second layer of non-woven fabric 2, a third layer of non-woven fabric 3, a tin bar 4 and a bandage 5.
Specifically, the first layer of non-woven fabric 1 is composed of fluoride, an antibacterial agent, a dispersing agent and a polymer fiber membrane, wherein the fluoride is fluorine-containing 2-oxazolidinone, and the content of the fluoride is 1-10 wt%. The antibacterial agent comprises chitosan and horseradish, wherein the content of the chitosan is 1-5 wt%, and the content of the horseradish is 1-5 wt%. The dispersant is tetrabutyl titanate with the content of 0.5-2 wt%. The polymer in the polymer fiber membrane is polyvinyl alcohol, and the content is 80-95 wt%. Actually, fluorine has strong electron-gaining capacity, so that charges are easy to accumulate on the surface of fluoride, the charges can adsorb micro substances and germs, the chitosan surface has rich amino groups and has strong antibacterial capacity, and horseradish contains isothiocyanate and has antibacterial capacity, so that the fluoride and the antibacterial agent are mixed into a polymer fiber membrane to adsorb the germs and further inhibit the growth of the germs, thereby greatly improving the antibacterial property of the mask.
The second layer of non-woven fabric 2 is composed of a polymer fiber membrane containing hydrotalcite, the pores of the polymer fiber membrane are smaller due to the coverage of the hydrotalcite, the pore diameter can reach 0.05 mu m at least, and meanwhile, the surface of the hydrotalcite layer is electrostatically charged and has a certain adsorption effect on small substances, so that the filtering efficiency of the mask is enhanced.
Wherein, the hydrotalcite covered on the surface of the polymer fiber membrane in the second layer of non-woven fabric 2 is magnesium aluminum carbonate type hydrotalcite. The molecular formula of the magnesium-aluminum carbonate hydrotalcite is Mg6Al2(OH)16CO3·4H2O, from Mg (NO)3)2·6H2O、Al(NO3)3·9H20. NaOH and anhydrous Na2CO3Synthesizing, wherein the molar ratio is (1-3): 1: (5-10): 1. the polymer in the polymer fiber membrane of the second layer of non-woven fabric 2 is selected from more than one of polyacrylonitrile, polypropylene and terylene.
The third layer of non-woven fabric 3 is a cellulose fiber film, the surface of cellulose macromolecules contains a large amount of hydroxyl, and the hydroxyl can be combined with water molecules, so that the cellulose fiber film has good water absorption, cellulose fibers are easy to bend and twist, and the softness is good.
< method for producing antibacterial mask >
As shown in fig. 1, the method for preparing the antibacterial mask of the present invention comprises the steps of:
(1) mixing fluoride, an antibacterial agent, a dispersing agent and a polymer fiber membrane in a spinning solution, stirring, and then obtaining a first layer of non-woven fabric by a wet electrostatic spinning technology;
(2) generating hydrotalcite by a hydrothermal method, and coating the hydrotalcite on the surface of the polymer fiber membrane to obtain a second layer of non-woven fabric;
(3) bonding the first layer of non-woven fabric, the second layer of non-woven fabric and the third layer of non-woven fabric into a whole by adopting an adhesive to obtain a composite non-woven fabric;
(4) cutting the composite non-woven fabric into small pieces;
(5) and adhering the tin bar, the bandage and the cut small blocks together by adopting an adhesive, and finally packaging the antibacterial mask into a box.
Wherein, in the step (1), in the spinning process, the solvent in the spinning solution is ethylene glycol and water, the ratio of the ethylene glycol to the water is 7:3, and the content of the solvent can be 50-75 wt%, preferably 75 wt%; the stirring time can be 2-4h, and is preferably 4 h; the spinning voltage can be 20-30kV, preferably 25 kV; the distance of spinning may be 150-300mm, preferably 200 mm.
In step (2), Mg (NO) in hydrothermal method3)2·6H2O、Al(NO3)3·9H20. NaOH and anhydrous Na2CO3In a molar ratio of (1-3): 1: (5-10): 1, mixing Mg (NO)3)2·6H2O、Al(NO3)3·9H20. NaOH and anhydrous Na2CO3Sequentially putting into plasma water for mixing to obtain a mixed solution, and soaking the polymer fiber membrane in the mixed solution at the temperature of 110-130 ℃, preferably 120 ℃; the soaking time can be 2-4h, preferably 4 h; finally, taking out the polymer fiber membrane and drying, wherein the drying temperature can be 50-80 ℃, and the preferable temperature is 70 ℃; the drying time may be 20-40min, preferably 30 min.
In the step (3), the adhesive is polyvinyl alcohol aqueous solution, and the preparation process comprises the following steps: at 85-97 deg.C, dissolving polyvinyl alcohol in water to obtain 6-12 wt% water solution, preferably 10 wt%, stirring, and cooling to room temperature.
The present invention will be further described with reference to the following examples.
Example (b):
the preparation method of the antibacterial mask comprises the following steps:
(1) mixing 5 wt% of fluorine-containing 2-oxazolidinone, 3 wt% of chitosan, 2 wt% of horseradish, 1 wt% of tetrabutyl titanate and 89 wt% of polyvinyl alcohol in ethylene glycol and water to obtain a mixed solution, wherein the solvent in the mixed solution is the ethylene glycol and the water, and the ratio of the ethylene glycol to the water is 7: and 3, stirring the mixture for 4 hours with the solvent accounting for 75 wt% of the mixture, and then spinning the mixture into a fiber membrane by a wet electrostatic spinning technology to obtain a first layer of non-woven fabric 1 (see figure 2), wherein the spinning voltage is 25kV, and the optimal distance of a spinning needle is 200 mm.
(2) As shown in fig. 3, deionized water is discharged from the first cylinder 10 into the hydrothermal reaction tank 8, and at the same time, the cloth releasing roll 6 releases the wound polymer fiber film, which is immersed in water through the guide roll 9; and (3) according to molar ratio: 1 adding Mg (NO)3)2·6H2O and Al (NO)3)3·9H20, mixing and pouring the mixture into a hydrothermal reaction tank 8 from a second charging barrel 11; taking the molar ratio of 8: NaOH and anhydrous Na of 12CO3And pouring the mixture into a hydrothermal reaction tank 8 from a third charging barrel 12, carrying out hydrothermal reaction on the polymer fiber membrane for 4 hours at 120 ℃, and covering the surface of the polymer fiber membrane with hydrotalcite to form a second layer of non-woven fabric 2. After the reaction, the second nonwoven fabric 2 was introduced into a rinsing bath 14, deionized water was injected into a fourth cylinder 13 to rinse the second nonwoven fabric 2, and then dried at 70 ℃ for 30min by a drying device 16, and finally collected into a package by a cloth roller 17. The waste liquid in the hydrothermal reaction tank 8 is discharged from the first discharge port 7, and the waste liquid in the rinsing tank 14 is discharged from the second discharge port 15.
(3) And dissolving polyvinyl alcohol in water at 90 ℃ to prepare a 10 wt% aqueous solution, uniformly stirring, and cooling to room temperature to obtain the water-based adhesive, namely the adhesive.
(4) And bonding the first layer of non-woven fabric 1, the second layer of non-woven fabric 2 and the third non-woven fabric 3 by adopting an adhesive to obtain the composite non-woven fabric.
(5) And cutting the composite non-woven fabric into small pieces.
(6) And adhering the tin bar 4, the bandage 5 and the cut small blocks together by adopting an adhesive to obtain the antibacterial mask.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments and the generic principles defined herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above-described embodiments. Those skilled in the art should appreciate that many modifications and variations are possible in light of the above teaching without departing from the scope of the invention.

Claims (9)

1. An antibacterial mask is characterized in that: the mask mainly comprises from outside to inside in sequence: the adhesive comprises a first layer of non-woven fabric, a second layer of non-woven fabric and a third layer of non-woven fabric, wherein the first layer of non-woven fabric, the second layer of non-woven fabric and the third layer of non-woven fabric are compounded together by an adhesive;
the first layer of non-woven fabric consists of fluoride, an antibacterial agent, a dispersing agent and a polymer fiber film;
the second layer of nonwoven fabric is composed of a polymer fiber film containing hydrotalcite;
the third layer of non-woven fabric is a cellulose fiber film.
2. The antibacterial mask according to claim 1, characterized in that: in the first layer of non-woven fabric, fluoride is fluorine-containing 2-oxazolidone, and the content is 1-10 wt%; the antibacterial agent comprises chitosan and horseradish, wherein the content of the chitosan is 1-5 wt%, and the content of the horseradish is 1-5 wt%; the dispersant is tetrabutyl titanate with the content of 0.5-2 wt%; the polymer in the polymer fiber membrane is polyvinyl alcohol, and the content is 80-95 wt%.
3. The antibacterial mask according to claim 1, characterized in that: the hydrotalcite covered on the surface of the polymer fiber membrane in the second layer of non-woven fabric is magnesium-aluminum carbonate hydrotalcite.
4. The antibacterial mask according to claim 3, characterized in that: the molecular formula of the magnesium-aluminum carbonate hydrotalcite is Mg6Al2(OH)16CO3·4H2O, from Mg (NO)3)2·6H2O、Al(NO3)3·9H20. NaOH and anhydrous Na2CO3Synthesizing, wherein the molar ratio is (1-3): 1: (5-10): 1.
5. the antibacterial mask according to claim 1, characterized in that: the polymer in the polymer fiber membrane of the second layer of non-woven fabric is selected from more than one of polyacrylonitrile, polypropylene and terylene.
6. A method for manufacturing an antibacterial mask according to any one of claims 1 to 5, wherein: which comprises the following steps:
(1) mixing fluoride, an antibacterial agent, a dispersing agent and a polymer fiber membrane, and spinning to obtain a first layer of non-woven fabric;
(2) generating hydrotalcite by a hydrothermal method, and coating the hydrotalcite on the surface of the polymer fiber membrane to obtain a second layer of non-woven fabric;
(3) compounding the first layer of non-woven fabric, the second layer of non-woven fabric and the third layer of non-woven fabric by adopting an adhesive to obtain a composite non-woven fabric;
(4) and cutting the composite non-woven fabric to obtain the antibacterial mask.
7. The method of claim 6, wherein: in the step (1), in the spinning process, the solvent in the spinning solution is ethylene glycol and water, the ratio of the ethylene glycol to the water is 7:3, and the content of the solvent is 50-75 wt%; the spinning voltage is 20-30KV, and the spinning distance is 150-300 mm.
8. The method of claim 6, wherein: in the step (2), Mg (NO) is added3)2·6H2O、Al(NO3)3·9H20. NaOH and anhydrous Na2CO3Mixing to obtain a mixed solution, soaking the polymer fiber membrane in the mixed solution at the temperature of 110-130 ℃ for 2-4h, taking out and drying at the temperature of 50-80 ℃ for 20-40 min.
9. The method of claim 6, wherein: in the step (3), the adhesive is a polyvinyl alcohol aqueous solution, and the preparation process comprises the following steps: at 85-97 deg.C, dissolving polyvinyl alcohol in water to obtain 6-12 wt% aqueous solution, stirring, and cooling to room temperature.
CN202010332337.8A 2020-04-24 2020-04-24 Antibacterial mask and preparation method thereof Pending CN111543695A (en)

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