CN112189914A - Reusable sterilization and virus killing protective mask and preparation process thereof - Google Patents

Reusable sterilization and virus killing protective mask and preparation process thereof Download PDF

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Publication number
CN112189914A
CN112189914A CN202010604900.2A CN202010604900A CN112189914A CN 112189914 A CN112189914 A CN 112189914A CN 202010604900 A CN202010604900 A CN 202010604900A CN 112189914 A CN112189914 A CN 112189914A
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China
Prior art keywords
woven fabric
spun
preparing
reusable
polypropylene
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CN202010604900.2A
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Chinese (zh)
Inventor
马晓飞
张丽
张志成
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Jixiang Sanbao High Tech Textile Co Ltd
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Jixiang Sanbao High Tech Textile Co Ltd
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Priority to CN202010604900.2A priority Critical patent/CN112189914A/en
Publication of CN112189914A publication Critical patent/CN112189914A/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
    • 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
    • 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
    • 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
    • B32B5/022—Non-woven fabric
    • 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
    • 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
    • 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
    • B32B5/22—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
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/09—Addition of substances to the spinning solution or to the melt for making electroconductive or anti-static filaments
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
    • 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
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • 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
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • 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
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/542—Adhesive fibres
    • D04H1/544—Olefin series
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D2400/00—Functions or special features of garments
    • A41D2400/36—Deoderising or perfuming
    • 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
    • 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
    • B32B2262/0261—Polyamide 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
    • 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
    • B32B2307/70—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
    • B32B2437/00—Clothing

Abstract

The invention provides a reusable sterilization and virus killing protective mask and a preparation process thereof. Preparing the modified polyamide and the modified polyester into non-woven fabric by adopting a spun-bonded spunlace process according to the mass percent of 20-80% and the mass percent of 80-20%; after the surface polyester fiber is finished by an active chlorine modification process, chlorine positive ions with strong oxidizing property can be quickly released to destroy the cell membrane structure of bacteria and denature the virus protein shell, so that the high-efficiency killing of the bacteria and the viruses is realized. The interlayer adopts electrostatic spinning nano-fibers to replace electret melt-blown non-woven fabrics, and stable and tiny apertures formed among the nano-fibers can efficiently intercept bacteria and viruses. In addition, the service time of the mask can be effectively prolonged by replacing the electrostatic adsorption effect with the physical interception effect. The matched deodorization and anti-bacterial inner layer can provide long-time deodorization protection.

Description

Reusable sterilization and virus killing protective mask and preparation process thereof
Technical Field
The invention belongs to the technical field of sanitary product preparation, and particularly relates to a reusable sterilization and virus killing protective mask and a preparation process thereof.
Background
At present, the protection mechanisms of the active textile for medical and health safety protection are physical screening based on interception effect, such as an N95 medical protective mask developed by American 3M company. However, the protection mechanism of the existing protective mask is physical screening based on the interception effect, and bacteria and viruses can still keep extremely strong infectivity after being intercepted on the surface of the protective material, so that subsequent secondary infection and cross infection are easily caused. The defects of the protective product not only seriously threaten the life safety of epidemic prevention personnel, but also accelerate the consumption of the protective product and bring huge pressure to a medical and sanitary protective product supply system.
In the aspect of protective masks, the polypropylene spunbonded non-woven fabric surface layer of the existing product has no sterilization and virus killing function, so that subsequent secondary infection and cross infection are easily caused; the melt-blown electret non-woven fabric interlayer has the problem that the interlayer is easy to lose efficacy, particularly, the charge attenuation quantity can be accelerated by moisture exhaled by a human body through the mouth and the nose in the use process, the functional layer finally loses efficacy, and the germ interception performance can be obviously reduced after the function layer loses efficacy; the polypropylene spun-bonded non-woven fabric inner layer is easy to breed fungi and generate peculiar smell after a long time.
Disclosure of Invention
Aiming at the problems existing in the prior technical scheme, the invention aims to provide a reusable sterilization and virucidal protective mask and a preparation process thereof, which can realize long-acting sterilization and virucidal and peculiar smell prevention.
In order to achieve the purpose, the invention provides the following technical scheme:
repeatedly usable's virus protective facial mask that disinfects, protective facial mask comprises the three-layer, and the top layer is active chlorine modified polyester spunbonded nonwoven, and the intermediate layer is static nanofiber, and the inlayer is polypropylene spunbonded nonwoven.
Further, the active chlorine modified polyester spun-bonded nonwoven fabric is prepared by mixing 80-20% by mass of modified polyamide and 20-80% by mass of modified polyester and carrying out spun-bonding and spunlace process.
Further, the modified polyamide is prepared by mixing polyamide, functional monomer containing amine structure and free radical initiator according to the mass portion ratio of 100: 1-10: 0.1-0.4 and performing double-screw reaction and extrusion.
Further, the modified polyester is prepared by mixing polyester, functional monomer containing amine structure and free radical initiator according to the mass portion ratio of 100: 1-10: 0.1-0.4 and extruding through double screw.
Further, the functional monomer containing an amine structure is acrylamide (AAM).
Further, the radical initiator is dicumyl peroxide (DCP) or 2, 5-dimethyl-2, 5-di-t-butylperoxy-3-yne (DTBHY).
Furthermore, the electrostatic nanofiber is prepared from the sea-island nanofiber material prepared from the polyester added with the conductive master batch by adopting a composite spinning process.
Further, the diameter of the nanofiber of the sea-island type nanofiber material is 50-300 nm.
Furthermore, the conductive master batch is prepared by extruding and granulating raw materials of carbon fiber, polyaniline and polypropylene through an extruder.
The preparation method of the reusable sterilization and virus killing protective mask comprises the following steps:
(1) preparing a surface active chlorine modified polyester spun-bonded non-woven fabric:
mixing polyamide, acrylamide (AAM) and dicumyl peroxide according to the mass ratio of 100: 1-10: 0.1-0.4, drying for 2 hours, then uniformly mixing, adding the mixed materials into a hopper of a double-screw extruder, and extruding through a melting reaction; preparing modified polyamide;
mixing polyester, acrylamide (AAM) and dicumyl peroxide according to the mass ratio of 100: 1-10: 0.1-0.4, drying for 2 hours, then uniformly mixing, adding the mixed materials into a hopper of a double-screw extruder, and extruding through a melting reaction; preparing modified polyester;
uniformly mixing 20-80% of modified polyamide and 80-20% of modified polyester by mass percent by adopting a spun-bonded spunlace process, and drying; then melting the mixture by respective screw extruders, filtering the melt, entering a double-component spun-bonded spunlace process, ejecting fibers containing double components by a spinneret plate, stretching the fibers by airflow of 5000m/min, laying the fibers into a net on a net forming machine, entering the spunlace machine for multiple times of high-pressure spunlace, splitting the fibers into superfine fibers, fixing the superfine fibers into non-woven fabric, and preparing the non-woven fabric;
performing chloramination treatment on the non-woven fabric obtained by the process, soaking the non-woven fabric in a mixed solution of 1000-10000ppm of active chlorine and a non-ionic surfactant TX-100 at room temperature for 30 minutes, cleaning with excessive deionized water, and drying to obtain a surface layer active chlorine modified polyester spunbonded non-woven fabric;
(2) preparing interlayer electrostatic nanofiber:
firstly, adding 0.1-5 parts by mass of dried carbon fiber, 5-15 parts by mass of polyaniline and 80-90 parts by mass of polypropylene into a mixer, uniformly mixing to obtain a mixture, adding the uniformly mixed mixture into a double-screw extruder, extruding and granulating, and drying to obtain conductive master batches;
preparing the sea-island type nanofiber material from the polyester added with the conductive master batch by adopting a composite spinning process;
preparing the sea-island type nanofiber material into nanofibers with the diameters of 50-300 nm;
(3) preparation of polypropylene spunbonded nonwoven:
preparing polypropylene non-woven fabric with softness of 3.41-3.43g and MD strength of 24.20-24.22N/5cm according to spinning and hot rolling treatment processes; the CD strength of the polypropylene spun-bonded non-woven fabric is 10.12-10.93N/5cm, the back-permeation resistance is 99.0-99.5%, and the shrinkage rate is 0.2-0.3%;
(4) and (3) forming the mask, namely bonding the prepared active chlorine modified polyester spun-bonded non-woven fabric, the electrostatic nano-fiber and the polypropylene spun-bonded non-woven fabric into a mask layer integrally according to the sequence of the surface layer, the interlayer and the inner layer.
Compared with the prior art, the invention has the beneficial effects that: the mask consists of three layers of materials: the surface layer is active chlorine modified polyester spun-bonded non-woven fabric with sterilization and virus killing functions, the interlayer is electrostatic spun nano-fiber, and the inner layer is long-acting deodorization polypropylene spun-bonded non-woven fabric. After the surface polyester fiber is finished by an active chlorine modification process, chlorine positive ions with strong oxidizing property can be quickly released to destroy the cell membrane structure of bacteria and denature the virus protein shell, so that the high-efficiency killing of the bacteria and the viruses is realized. And the function can be simply realized by adding 84 disinfectant in the cleaning process, and the protective, sterilization and virus killing function can be maintained for more than 3 days once regeneration is performed. The interlayer adopts electrostatic spinning nano-fibers to replace electret melt-blown non-woven fabrics, and stable and tiny apertures formed among the nano-fibers can efficiently intercept bacteria and viruses. In addition, the service time of the mask can be effectively prolonged by replacing the electrostatic adsorption effect with the physical interception effect. The supporting deodorization fungus inner layer of preventing can provide long-time deodorization protection, avoids breeding of fungi foreign matter in the gauze mask, realizes in the real sense that under long-time work, gauze mask protection nature and the promotion in coordination of the travelling comfort of wearing.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some embodiments of the present invention, but not all embodiments.
The reusable sterilization and virus killing protective mask comprises three layers, wherein the surface layer is active chlorine modified polyester spun-bonded non-woven fabric, the interlayer is electrostatic nano fiber, and the inner layer is polypropylene spun-bonded non-woven fabric.
The active chlorine modified polyester spun-bonded non-woven fabric is prepared by mixing 80-20% by mass of modified polyamide and 20-80% by mass of modified polyester and carrying out spun-bonded spunlace process.
The modified polyamide is prepared by mixing polyamide, functional monomer containing amine structure and free radical initiator according to the mass portion ratio of 100: 1-10: 0.1-0.4 and extruding through double screw.
The modified polyester is prepared by mixing polyester, functional monomer containing amine structure and free radical initiator according to the mass portion ratio of 100: 1-10: 0.1-0.4 and extruding through double screw.
The functional monomer containing an amine structure is acrylamide (AAM).
The free radical initiator is dicumyl peroxide (DCP) or 2, 5-dimethyl-2, 5-di-tert-butylperoxy-3-alkyne (DTBHY).
The electrostatic nanofiber is prepared from sea-island type nanofiber materials prepared from polyester added with conductive master batches by adopting a composite spinning process. The diameter of the nanofiber of the sea-island type nanofiber material is 50-300 nm. The conductive master batch is prepared by extruding and granulating raw materials of carbon fiber, polyaniline and polypropylene through an extruder.
The specific preparation examples are as follows:
example 1
(1) Preparing a surface active chlorine modified polyester spun-bonded non-woven fabric:
mixing 1000g of polyamide, 50g of acrylamide (AAM) and 2g of dicumyl peroxide, drying for 2 hours, then uniformly mixing, adding the mixed materials into a hopper of a double-screw extruder, and extruding through a melting reaction; the extrusion temperature is 160 ℃, and the modified polyamide is prepared.
Mixing 1000g of polyester, 10g of acrylamide (AAM) and 1g of dicumyl peroxide, drying for 2 hours, then uniformly mixing, adding the mixed materials into a hopper of a double-screw extruder, and extruding through a melting reaction; the modified polyester is prepared.
Adopting a spun-bonded spunlace process, uniformly mixing 500g of modified polyamide and modified polyester according to mass, and drying; then melting the mixture by respective screw extruders, filtering the melt, and then performing a two-component spun-bonded spunlace process to prepare the non-woven fabric.
Performing chloramination treatment on the non-woven fabric obtained by the process, soaking the non-woven fabric in a mixed solution of 10000ppm of active chlorine and a non-ionic surfactant TX-100 at room temperature for 30 minutes, washing with excessive deionized water, and drying to obtain the surface layer active chlorine modified polyester spunbonded non-woven fabric.
(2) Preparing interlayer electrostatic nanofiber:
firstly, adding 50g of dried carbon fiber, 150g of polyaniline and 900g of polypropylene into a mixer together, uniformly mixing to obtain a mixture, adding the uniformly mixed mixture into a double-screw extruder, extruding and granulating, and drying to obtain conductive master batches;
preparing the sea-island type nanofiber material from the polyester added with the conductive master batch by adopting a composite spinning process;
preparing the sea-island type nanofiber material into nanofibers with the diameter of 300 nm.
(3) Preparation of polypropylene spunbonded nonwoven:
preparing polypropylene non-woven fabric with the softness of 3.43g and the MD strength of 24.20N/5cm according to spinning and hot rolling treatment processes; the CD strength of the polypropylene spun-bonded non-woven fabric is 10.93N/5cm, the back-permeation resistance is 99.0 percent, and the shrinkage rate is 0.2 percent.
(4) And (3) forming the mask, namely bonding the prepared active chlorine modified polyester spun-bonded non-woven fabric, the electrostatic nano-fiber and the polypropylene spun-bonded non-woven fabric into a mask layer integrally according to the sequence of the surface layer, the interlayer and the inner layer.
Example 2
(1) Preparing a surface active chlorine modified polyester spun-bonded non-woven fabric:
mixing 1000g of polyamide, 100g of acrylamide (AAM) and 4g of dicumyl peroxide, drying for 2 hours, then uniformly mixing, adding the mixed materials into a hopper of a double-screw extruder, and extruding through a melting reaction; the modified polyamide is prepared.
Mixing 1000g of polyester, 100g of acrylamide (AAM) and 4g of dicumyl peroxide, drying for 2 hours, then uniformly mixing, adding the mixed materials into a hopper of a double-screw extruder, and extruding through a melting reaction; the modified polyester is prepared.
Adopting a spun-bonded spunlace process, uniformly mixing 400g of modified polyamide and 600g of modified polyester, and drying; then melting the mixture by respective screw extruders, filtering the melt, entering a double-component spun-bonded spunlace process, ejecting fibers containing double components by a spinneret plate, laying a net on a net former, entering a spunlace machine for multiple times of high-pressure spunlace, splitting the fibers into superfine fibers, fixing the superfine fibers into non-woven fabrics, and preparing the non-woven fabrics.
Performing chloramination treatment on the non-woven fabric obtained by the process, soaking the non-woven fabric in a mixed solution of active chlorine with the concentration of 5000ppm and a non-ionic surfactant TX-100 for 30 minutes at room temperature, washing with excessive deionized water, and drying to obtain the surface layer active chlorine modified polyester spunbonded non-woven fabric.
(2) Preparing interlayer electrostatic nanofiber:
firstly, adding 50g of dried carbon fiber, 150g of polyaniline and 80g of polypropylene into a mixer together according to parts by mass, uniformly mixing to obtain a mixture, adding the uniformly mixed mixture into a double-screw extruder, extruding and granulating, and drying to obtain the conductive master batch
Preparing the sea-island type nanofiber material from the polyester added with the conductive master batch by adopting a composite spinning process;
preparing the sea-island type nanofiber material into nanofibers with the diameter of 100 nm.
(3) Preparation of polypropylene spunbonded nonwoven:
preparing polypropylene non-woven fabric with the softness of 3.4g and the MD strength of 24.0N/5cm according to spinning and hot rolling treatment processes; the CD strength of the polypropylene spun-bonded non-woven fabric is 10.5N/5cm, the back-permeation resistance is 99.0 percent, and the shrinkage rate is 0.3 percent.
(4) And (3) forming the mask, namely bonding the prepared active chlorine modified polyester spun-bonded non-woven fabric, the electrostatic nano-fiber and the polypropylene spun-bonded non-woven fabric into a mask layer integrally according to the sequence of the surface layer, the interlayer and the inner layer.
Comparative example 1
(1) Preparation of surface layer spunbonded nonwoven fabric:
uniformly mixing polyamide and polyester by adopting a spun-bonded spunlace process, and drying; then melting the mixture by respective screw extruders, filtering the melt, entering a double-component spun-bonded spunlace process, ejecting fibers containing double components by a spinneret plate, laying a net on a net former, entering a spunlace machine for multiple times of high-pressure spunlace, splitting the fibers into superfine fibers, fixing the superfine fibers into non-woven fabrics, and preparing the non-woven fabrics.
(2) Preparing interlayer electrostatic nanofiber:
firstly, adding 50g of dried carbon fiber, 150g of polyaniline and 900g of polypropylene into a mixer together, uniformly mixing to obtain a mixture, adding the uniformly mixed mixture into a double-screw extruder, extruding and granulating, and drying to obtain conductive master batches;
preparing the sea-island type nanofiber material from the polyester added with the conductive master batch by adopting a composite spinning process;
preparing the sea-island type nanofiber material into nanofibers with the diameter of 300 nm.
(3) Preparation of polypropylene spunbonded nonwoven:
preparing polypropylene non-woven fabric with the softness of 3.43g and the MD strength of 24.20N/5cm according to spinning and hot rolling treatment processes; the CD strength of the polypropylene spun-bonded non-woven fabric is 10.93N/5cm, the back-permeation resistance is 99.0 percent, and the shrinkage rate is 0.2 percent.
(4) And (3) forming the mask, namely bonding the prepared polyester spun-bonded non-woven fabric, electrostatic nano-fiber and polypropylene spun-bonded non-woven fabric into a mask layer integrally according to the sequence of the surface layer, the interlayer and the inner layer.
Comparative example 2
(1) Preparing a surface active chlorine modified polyester spun-bonded non-woven fabric:
mixing 1000g of polyamide, 100g of acrylamide (AAM) and 4g of dicumyl peroxide, drying for 2 hours, then uniformly mixing, adding the mixed materials into a hopper of a double-screw extruder, and extruding through a melting reaction; the modified polyamide is prepared.
Mixing 1000g of polyester, 100g of acrylamide (AAM) and 4g of dicumyl peroxide, drying for 2 hours, then uniformly mixing, adding the mixed materials into a hopper of a double-screw extruder, and extruding through a melting reaction; the modified polyester is prepared.
Adopting a spun-bonded spunlace process, uniformly mixing 400g of modified polyamide and 600g of modified polyester, and drying; then melting the mixture by respective screw extruders, filtering the melt, entering a double-component spun-bonded spunlace process, ejecting fibers containing double components by a spinneret plate, laying a net on a net former, entering a spunlace machine for multiple times of high-pressure spunlace, splitting the fibers into superfine fibers, fixing the superfine fibers into non-woven fabrics, and preparing the non-woven fabrics.
Performing chloramination treatment on the non-woven fabric obtained by the process, soaking the non-woven fabric in a mixed solution of active chlorine with the concentration of 5000ppm and a non-ionic surfactant TX-100 for 30 minutes at room temperature, washing with excessive deionized water, and drying to obtain the surface layer active chlorine modified polyester spunbonded non-woven fabric.
(2) Preparation of polypropylene spunbonded nonwoven:
preparing polypropylene non-woven fabric with the softness of 3.4g and the MD strength of 24.0N/5cm according to spinning and hot rolling treatment processes; the CD strength of the polypropylene spun-bonded non-woven fabric is 10.5N/5cm, the back-permeation resistance is 99.0 percent, and the shrinkage rate is 0.3 percent.
(3) And (3) forming the mask, namely bonding the prepared active chlorine modified polyester spun-bonded non-woven fabric and polypropylene spun-bonded non-woven fabric into a mask layer integrally according to the sequence of the surface layer and the inner layer.
Comparative example 3
(1) Preparing a surface active chlorine modified polyester spun-bonded non-woven fabric:
mixing 1000g of polyamide, 50g of acrylamide (AAM) and 2g of dicumyl peroxide, drying for 2 hours, then uniformly mixing, adding the mixed materials into a hopper of a double-screw extruder, and extruding through a melting reaction; the extrusion temperature is 160 ℃, and the modified polyamide is prepared.
Mixing 1000g of polyester, 10g of acrylamide (AAM) and 1g of dicumyl peroxide, drying for 2 hours, then uniformly mixing, adding the mixed materials into a hopper of a double-screw extruder, and extruding through a melting reaction; the modified polyester is prepared.
Adopting a spun-bonded spunlace process, uniformly mixing 500g of modified polyamide and modified polyester according to mass, and drying; then melting the mixture by respective screw extruders, filtering the melt, and then performing a two-component spun-bonded spunlace process to prepare the non-woven fabric.
(2) Preparing interlayer electrostatic nanofiber:
firstly, adding 50g of dried carbon fiber, 150g of polyaniline and 900g of polypropylene into a mixer together, uniformly mixing to obtain a mixture, adding the uniformly mixed mixture into a double-screw extruder, extruding and granulating, and drying to obtain conductive master batches;
preparing the sea-island type nanofiber material from the polyester added with the conductive master batch by adopting a composite spinning process;
preparing the sea-island type nanofiber material into nanofibers with the diameter of 300 nm.
(3) Preparation of polypropylene spunbonded nonwoven:
preparing polypropylene non-woven fabric with the softness of 3.43g and the MD strength of 24.20N/5cm according to spinning and hot rolling treatment processes; the CD strength of the polypropylene spun-bonded non-woven fabric is 10.93N/5cm, the back-permeation resistance is 99.0 percent, and the shrinkage rate is 0.2 percent.
(4) And (3) forming the mask, namely bonding the prepared modified polyester spun-bonded non-woven fabric, the electrostatic nano-fiber and the polypropylene spun-bonded non-woven fabric into a mask layer integrally according to the sequence of the surface layer, the interlayer and the inner layer.
Masks were prepared from the same raw materials according to example 1, example 2, comparative example 1, comparative example 2, and comparative example 3, and the antibacterial activity of the masks was measured, and the results are shown in tables 1 and 2.
Table 1 shows the results of the microbiological analysis of the protective mask of the examples:
Figure RE-GDA0002780102210000101
table 2 shows comparative data on the application performance of the masks of examples and comparative examples.
Figure RE-GDA0002780102210000102
Wherein, the average bacteriostasis rate refers to the average bacteriostasis rate on candida albicans, staphylococcus aureus and escherichia coli.
The mask realizes that the effective chlorine content of the polyester spun-bonded non-woven fabric is more than or equal to 200ppm, the bacteria killing efficiency within 2 hours is 99 percent, the virus killing efficiency is 99 percent, the synthetic blood pressure resistance is more than or equal to 10.7kPa, and the odor grade of a deodorization layer is less than or equal to 2 grade.
Through the tests and analysis, after the protective mask is adopted, the polyester fiber on the surface layer is finished by an active chlorine modification process, and then, chlorine positive ions with strong oxidizing property can be rapidly released so as to destroy the cell membrane structure of bacteria and denature the virus protein shell, thereby realizing the efficient killing of the bacteria and the virus. And the function can be simply realized by adding 84 disinfectant in the cleaning process, and the protective, sterilization and virus killing function can be maintained for more than 3 days once regeneration is performed. The interlayer adopts electrostatic spinning nano-fibers to replace electret melt-blown non-woven fabrics, and stable and tiny apertures formed among the nano-fibers can efficiently intercept bacteria and viruses. In addition, the service time of the mask can be effectively prolonged by replacing the electrostatic adsorption effect with the physical interception effect. The supporting deodorization fungus inner layer of preventing can provide long-time deodorization protection, avoids breeding of fungi foreign matter in the gauze mask, realizes in the real sense that under long-time work, gauze mask protection nature and the promotion in coordination of the travelling comfort of wearing.
The sterilization and virus killing functions of the reusable protective mask can be maintained for 3 days, and after the effective use period is finished, 84 disinfectant is only needed to be added in the normal cleaning process, and the dilution ratio of the disinfectant to water is 1: 100, the active chlorine on the surface of the protective mask can be quickly regenerated and can be reused after being dried in the air or being dried.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the present invention as defined in the accompanying claims.

Claims (10)

1. The reusable sterilization and virus killing protective mask is characterized by comprising three layers, wherein the surface layer is an active chlorine modified polyester spun-bonded non-woven fabric, the interlayer is an electrostatic nanofiber, and the inner layer is a polypropylene spun-bonded non-woven fabric.
2. The reusable sterilization and virucidal protective mask according to claim 1, wherein the active chlorine modified polyester spun-bonded nonwoven fabric is prepared by mixing 80-20% by mass of modified polyamide and 20-80% by mass of modified polyester and performing spun-bonding and spunlace process.
3. The reusable sterilization and virucidal protective mask according to claim 2, wherein the modified polyamide is prepared by mixing polyamide, functional monomer containing amine structure and free radical initiator according to the mass portion ratio of 100: 1-10: 0.1-0.4 and performing twin-screw reaction and extrusion.
4. The reusable sterilization and virucidal protective mask according to claim 2, wherein the modified polyester is prepared by mixing polyester, functional monomer containing amine structure and free radical initiator according to the mass portion ratio of 100: 1-10: 0.1-0.4 and performing twin-screw reaction and extrusion.
5. The reusable bactericidal virucidal protective mask according to claim 3 or 4, wherein the functional monomer containing an amine structure is one of acrylamide (AAM), methacrylamide (MAM), and N-tert-butyl acrylamide (NTBA).
6. The reusable bactericidal virucidal respirator according to claim 3 or 4, wherein the free radical initiator is dicumyl peroxide (DCP) or 2, 5-dimethyl-2, 5-di-t-butylperoxy-3-yne (DTBHY).
7. The reusable bactericidal and virucidal protective mask according to claim 1, wherein the electrostatic nanofibers are made of sea-island type nanofiber material prepared from polyester added with conductive masterbatch by composite spinning process.
8. The reusable bactericidal virucidal protective mask of claim 7, wherein the island in the sea nanofiber material has a nanofiber diameter of 50-300 nm.
9. The reusable sterilization and virucidal protective mask according to claim 7, wherein the conductive masterbatch is prepared by extruding and granulating raw materials of carbon fiber, polyaniline and polypropylene through an extruder.
10. The method for manufacturing a reusable bactericidal virucidal protective mask according to any one of claims 1 to 9, comprising the steps of:
(1) preparing a surface active chlorine modified polyester spun-bonded non-woven fabric:
mixing polyamide, acrylamide (AAM) and dicumyl peroxide according to the mass ratio of 100: 1-10: 0.1-0.4, drying for 2 hours, then uniformly mixing, adding the mixed materials into a hopper of a double-screw extruder, and extruding through a melting reaction; preparing modified polyamide;
mixing polyester, acrylamide (AAM) and dicumyl peroxide according to the mass ratio of 100: 1-10: 0.1-0.4, drying for 2 hours, then uniformly mixing, adding the mixed materials into a hopper of a double-screw extruder, and extruding through a melting reaction; preparing modified polyester;
uniformly mixing 20-80% of modified polyamide and 80-20% of modified polyester by mass percent by adopting a spun-bonded spunlace process, and drying; then melting the mixture by respective screw extruders, filtering the melt, entering a double-component spun-bonded spunlace process, ejecting fibers containing double components by a spinneret plate, stretching the fibers by airflow of 5000m/min, laying the fibers into a net on a net forming machine, entering the spunlace machine for multiple times of high-pressure spunlace, splitting the fibers into superfine fibers, fixing the superfine fibers into non-woven fabric, and preparing the non-woven fabric;
performing chloramination treatment on the non-woven fabric obtained by the process, soaking the non-woven fabric in a mixed solution of 1000-10000ppm of active chlorine and a non-ionic surfactant TX-100 at room temperature for 30 minutes, cleaning with excessive deionized water, and drying to obtain a surface layer active chlorine modified polyester spunbonded non-woven fabric;
(2) preparing interlayer electrostatic nanofiber:
firstly, adding 0.1-5 parts by mass of dried carbon fiber, 5-15 parts by mass of polyaniline and 80-90 parts by mass of polypropylene into a mixer, uniformly mixing to obtain a mixture, adding the uniformly mixed mixture into a double-screw extruder, extruding and granulating, and drying to obtain conductive master batches;
preparing the sea-island type nanofiber material from the polyester added with the conductive master batch by adopting a composite spinning process;
preparing the sea-island type nanofiber material into nanofibers with the diameters of 50-300 nm;
(3) preparation of polypropylene spunbonded nonwoven:
preparing polypropylene non-woven fabric with softness of 3.41-3.43g and MD strength of 24.20-24.22N/5cm according to spinning and hot rolling treatment processes; the CD strength of the polypropylene spun-bonded non-woven fabric is 10.12-10.93N/5cm, the back-permeation resistance is 99.0-99.5%, and the shrinkage rate is 0.2-0.3%;
(4) and (3) forming the mask, namely bonding the prepared active chlorine modified polyester spun-bonded non-woven fabric, the electrostatic nano-fiber and the polypropylene spun-bonded non-woven fabric into a mask layer integrally according to the sequence of the surface layer, the interlayer and the inner layer.
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