CN114808186B - Antibacterial fiber, dry-wet antibacterial non-woven fabric and preparation method thereof - Google Patents
Antibacterial fiber, dry-wet antibacterial non-woven fabric and preparation method thereof Download PDFInfo
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- CN114808186B CN114808186B CN202210273842.9A CN202210273842A CN114808186B CN 114808186 B CN114808186 B CN 114808186B CN 202210273842 A CN202210273842 A CN 202210273842A CN 114808186 B CN114808186 B CN 114808186B
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 77
- 239000000835 fiber Substances 0.000 title claims abstract description 41
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000002131 composite material Substances 0.000 claims abstract description 42
- -1 polyethylene Polymers 0.000 claims abstract description 27
- 239000012792 core layer Substances 0.000 claims abstract description 26
- 239000010410 layer Substances 0.000 claims abstract description 25
- 239000004698 Polyethylene Substances 0.000 claims abstract description 23
- 229920000573 polyethylene Polymers 0.000 claims abstract description 23
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract description 23
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 23
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 21
- 238000009987 spinning Methods 0.000 claims abstract description 18
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 14
- 238000005516 engineering process Methods 0.000 claims abstract description 11
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 239000000155 melt Substances 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000009740 moulding (composite fabrication) Methods 0.000 claims abstract description 5
- 238000007493 shaping process Methods 0.000 claims abstract description 5
- 238000005507 spraying Methods 0.000 claims abstract description 5
- 238000004804 winding Methods 0.000 claims abstract description 5
- 238000005098 hot rolling Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 36
- 239000000758 substrate Substances 0.000 claims description 8
- 239000004599 antimicrobial Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 238000003892 spreading Methods 0.000 claims description 2
- 230000007480 spreading Effects 0.000 claims description 2
- 230000000845 anti-microbial effect Effects 0.000 claims 2
- 238000000034 method Methods 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 41
- 239000000126 substance Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 10
- 238000005868 electrolysis reaction Methods 0.000 abstract description 6
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 5
- 230000001954 sterilising effect Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 3
- 230000005669 field effect Effects 0.000 abstract description 2
- 238000001556 precipitation Methods 0.000 abstract description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 18
- 239000011162 core material Substances 0.000 description 18
- 210000001519 tissue Anatomy 0.000 description 15
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 9
- 239000011787 zinc oxide Substances 0.000 description 9
- 230000004048 modification Effects 0.000 description 8
- 238000012986 modification Methods 0.000 description 8
- 239000003242 anti bacterial agent Substances 0.000 description 7
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 7
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 7
- 239000008213 purified water Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 241000222122 Candida albicans Species 0.000 description 4
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 4
- 239000005751 Copper oxide Substances 0.000 description 4
- 241000588724 Escherichia coli Species 0.000 description 4
- 229940095731 candida albicans Drugs 0.000 description 4
- 229910000431 copper oxide Inorganic materials 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 238000002791 soaking Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000002202 Polyethylene glycol Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 3
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 3
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000000645 desinfectant Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002736 metal compounds Chemical class 0.000 description 2
- 230000001699 photocatalysis Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 210000002700 urine Anatomy 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 201000004624 Dermatitis Diseases 0.000 description 1
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 1
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 235000013877 carbamide Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000007922 dissolution test Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910021432 inorganic complex Inorganic materials 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
-
- 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
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
-
- 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
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
-
- 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
- D04H1/44—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
- D04H1/48—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 in combination with at least one other method of consolidation
- D04H1/485—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 in combination with at least one other method of consolidation in combination with weld-bonding
-
- 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
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
- D04H1/5412—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres sheath-core
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Multicomponent Fibers (AREA)
- Artificial Filaments (AREA)
Abstract
The invention discloses an antibacterial fiber, dry-wet antibacterial non-woven fabric and a preparation method thereof. Respectively doping nano metal oxide containing hydroxyl into polyethylene and polyethylene terephthalate according to the mass percentage of 0.01-0.1%, obtaining raw materials of a skin layer and a core layer, adding the raw materials into a melt double-pipeline of a spinning machine, extruding through double screws, spraying through a composite spinning assembly, cooling, forming, winding, stretching, curling and shaping to obtain the ES skin-core heterojunction composite fiber; and then hot air or hot rolling technology is adopted to obtain the dry-wet antibacterial non-woven fabric. The composite fiber provided by the invention has a skin-core micro-electric field interface, utilizes the interface micro-electric field effect, generates water in an electrolysis environment to have an antibacterial active factor, has a rapid and efficient sterilization effect, simultaneously has a high-efficient sterilization effect on liquid after the composite fiber is soaked in water, has no chemical substance precipitation in water, is safe, environment-friendly and energy-saving, and is suitable for a skin contact layer of a wet-dry disposable sanitary article.
Description
Technical Field
The invention relates to an antibacterial fiber, a dry-wet antibacterial non-woven fabric and a preparation method thereof, wherein an antibacterial effect is generated by utilizing an interface micro-electric field.
Background
In recent years, with the progress of science and technology and the improvement of living standard of people, health care consciousness and safety consciousness of people are increasingly enhanced, and diseases caused by harmful microorganisms in the environment are common, so that active development of various antibacterial materials and antibacterial equipment closely related to the life of people is a research hotspot of researchers.
The research of the antibacterial material considers the antibacterial effect and also considers the safety, the production cost and the use convenience of the antibacterial material. Generally, antimicrobial agents are classified into three general classes, natural antimicrobial agents, organic antimicrobial agents and inorganic antimicrobial agents. The natural antibacterial agent has the advantages of no pollution, good biocompatibility, but limited antibacterial function, difficult long-acting broad-spectrum antibacterial property, high temperature resistance, washing resistance and special extraction process. The organic antibacterial agent is mainly quaternary ammonium salts, phenols, ureas, guanidine, heterocycles and organic metal compounds, has strong initial bactericidal power, good bactericidal instant effect and broad antibacterial spectrum, is relatively low in price, but has poor chemical stability, is not heat-resistant and not high-temperature-resistant, and the secondary product is often toxic, is easy to migrate during use and has short antibacterial service life. Inorganic antibacterial agents become new generation ideal antibacterial agents because of good safety, and currently, three main classes are: one is an inorganic salt or complex containing metal ions; the second type is a photocatalytic (photocatalytic) antibacterial agent typified by zinc oxide and titanium oxide; the third category is heterojunction composite antibacterial agents. The third type of heterojunction composite antibacterial material has a development prospect in terms of safety and efficacy, the safety problem of metal precipitation of the first type and the dependence of the second type of inorganic antibacterial agent on ultraviolet light are made up, in addition, a micro-electric field exists in the structure of the heterojunction composite antibacterial material, and a medium in an electrolytic environment can be a substance with an antibacterial effect in a certain environment, so that the heterojunction composite antibacterial material is a safe physical antibacterial technology.
The existing wet tissue is basically composed of non-woven fabrics and pure water, and for mildew prevention, preservatives are required to be added, so that the problems of chemical pollution and skin allergy exist; whereas dry tissues generally do not have an antibacterial disinfecting effect. Therefore, there is a need to develop a product which has an antibacterial effect itself and which can electrolyze water to make the water also have an antibacterial and disinfectant effect.
The present method for producing the antibacterial disinfectant by electrolysis mainly comprises a hypochlorous acid water electrolysis device, and typical technology comprises a high-concentration slightly acidic hypochlorous acid water electrolysis device and a production method provided by Chinese invention patent CN 112777692A.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides the antibacterial fiber and wet and dry antibacterial non-woven fabric with high-efficiency, quick-acting, safe and stable antibacterial effects and the preparation method thereof, so as to meet the requirements of children, pregnant women, sensitive people and sensitive parts.
The technical scheme for realizing the aim of the invention is to provide an antibacterial fiber, wherein the fiber is an ES sheath-core heterojunction composite fiber, a sheath layer takes Polyethylene (PE) as a base material, a core layer takes polyethylene terephthalate (PET) as a base material, and nano metal oxides containing hydroxyl groups with the mass percentage of 0.01-0.1% are respectively doped in the sheath layer and the core layer; the mass ratio of the skin layer to the core layer is 1:1-2.
The technical scheme of the invention also provides a preparation method of the antibacterial fiber, which comprises the following steps:
(1) Taking polyethylene as a skin layer substrate, taking polyethylene terephthalate as a core layer substrate, and respectively doping nano metal oxides containing hydroxyl into the polyethylene and the polyethylene terephthalate according to the mass percentage of 0.01-0.1%, so as to prepare skin layer and core layer raw materials;
(2) And (3) respectively adding the raw materials of the skin layer and the core layer prepared in the step (1) into a melt double pipeline of a spinning machine according to the mass ratio of 1:1-2, extruding through double screws, spraying through a composite spinning assembly, cooling, forming, winding, stretching, curling and shaping to obtain the ES skin-core heterojunction composite fiber.
The technical scheme of the invention comprises a preparation method of a dry-wet dual-purpose antibacterial non-woven fabric, which comprises the following steps:
(1) Taking polyethylene as a skin layer substrate, taking polyethylene terephthalate as a core layer substrate, and respectively doping nano metal oxide containing hydroxyl into the polyethylene and the polyethylene terephthalate according to the mass percentage of 0.01-0.1%, so as to prepare skin layer and core layer raw materials;
(2) Respectively adding the raw materials of the skin layer and the core layer prepared in the step (1) into a melt double pipeline of a spinning machine according to the mass ratio of 1:1-2, extruding through double screws, spraying out through a composite spinning assembly, and cooling, forming, winding, stretching, curling and shaping to obtain the ES skin-core heterojunction composite fiber;
(3) The dry-wet antibacterial non-woven fabric is prepared by spreading through hot air or hot rolling technology.
The technical scheme of the invention also comprises the dry-wet antibacterial non-woven fabric obtained by the preparation method.
The nano metal oxide is one or more of zinc, copper, molybdenum, magnesium and titanium metal oxides.
The heterojunction material provided by the invention is ES sheath-core composite fiber, the sheath layer is Polyethylene (PE) material of nano semiconductor metal sulfide, the core layer is polyethylene terephthalate (PET) material containing nano semiconductor metal oxide, and the antibacterial non-woven fabric is prepared.
The principle of the invention is as follows: the dry-wet dual-purpose antibacterial non-woven fabric is prepared by using the heterojunction effect formed by doping semiconductor metal compounds into the organic polymer material skin layer core layer to electrolyze water, the water in the non-woven fabric can generate antibacterial active factors, meanwhile, liquid can also generate a rapid and efficient sterilization effect after soaking the water, no other chemical substances are separated out from the water, adverse effects on the human body or the ecological environment are avoided, and the product has the advantages of safety, environmental protection and energy saving, can be used for preparing a dry-wet dual-purpose tissue box, and can also be widely used for disposable sanitary products such as cotton soft tissues, wet tissues, diaper, urine isolation pads, milk isolation pads, sanitary tissues, sanitary pads and the like.
Compared with the prior art, the invention has the beneficial effects that:
1. The invention provides an interface with skin-core composite fibers through a special texture technology, utilizes the micro-electric field effect among the interfaces, generates water in an electrolysis environment to resist bacteria activity factors, and has the bacteria resistance of more than 99% in 2 minutes, thereby solving the safety problem that the prior antibacterial disinfection technology contains antibacterial substances for stimulating skin.
2. The antibacterial non-woven fabric provided by the invention has good water absorbability, can generate antibacterial effect by utilizing moisture in the environment in a dry state and utilizing soaked water in a wet state, does not need special preparation devices, electric energy and the like, does not separate out any other chemical substances, does not generate adverse effects on the human body or ecological environment, has the characteristics of safety, environmental protection and energy saving from preparation to application, and is particularly suitable for children, pregnant women, sensitive parts and sensitive people.
Drawings
FIG. 1 is a microscopic view of a cross-section of an ES sheath-core composite fiber provided by an embodiment of the present invention in a wet and dry state;
fig. 2 is a schematic structural diagram of a dry-wet dual-purpose antibacterial tissue box provided by the embodiment of the invention.
In the figure, 1. A tissue box shell; 2. a box cover connecting piece; 3. a box cover; 4. a box cover lock; 5. dry and wet antibacterial non-woven fabrics; 6. a cavity; 7. a purified water reservoir; 8. purified water spray head.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings and the examples.
Example 1
1. Preparation of hydroxyl-containing nano zinc oxide
Mixing and grinding zinc oxide with the commercial particle size of 20-30 nm, polyvinylpyrrolidone, polyethylene glycol and glycerol according to the mass ratio of 1:0.1:0.5:0.1 to prepare the nano zinc oxide containing hydroxyl.
2. Preparation of ES sheath-core composite fiber
Adding 0.03 mass percent of nano zinc oxide containing hydroxyl into a PE material in a slice modification device to prepare a modified PE material, taking the modified PE material as a subsequent skin layer, and adding 0.03 mass percent of nano zinc oxide containing hydroxyl into the PET material in the slice modification device to prepare a modified PET material, taking the modified PET material as a subsequent core layer; in the preparation device of the composite fiber, the sheath layer material and the core layer material are respectively added into a melt pipeline of spinning according to the mass ratio of 1:1.1, are extruded by double screws, are sprayed out by a composite spinning assembly, and are cooled, formed, wound, stretched, curled and shaped to obtain the ES sheath-core composite fiber.
Referring to fig. 1, a cross-sectional microscopic view of the ES sheath-core composite fiber prepared in this example in a dry state and a wet state is shown; the A diagram is a cross-sectional microscopic diagram of the dry composite fiber, and the B diagram is a cross-sectional microscopic diagram of the dried composite fiber after being soaked in pure water; the comparison result shows that the interface of the sheath and the core of the composite fiber after being wet is obviously enlarged, and the interface is enlarged due to free oxygen generated by water in an electrolysis environment, so that the composite fiber provided by the embodiment can generate an antibacterial active factor by utilizing a heterojunction micro-electric field.
Example 2
The ES sheath-core composite fiber prepared in example 1 is processed by hot air non-woven fabric to obtain the ES hot air non-woven fabric.
The hot air non-woven fabric is soaked in deionized water for 24 hours according to the mass ratio of 1:30, and the water has no other chemical substances and has high-efficiency antibacterial effect.
The antibacterial effect of the nonwoven fabric sample prepared in this example and the water soaked in the sample was measured, and the results are shown in table 1.
Table 1:
。
after the ES composite fiber nonwoven fabric provided in this example was soaked in deionized water, the metal dissolution test results for the soaked water are shown in table 2.
Table 2:
。
the test results in Table 1 show that the antibacterial ratio of the hot air nonwoven fabric for 2 minutes is 99% for Staphylococcus aureus, 99% for Escherichia coli and 99% for Candida albicans.
The non-woven fabric processed by the ES sheath-core composite fiber provided by the embodiment can electrolyze water in the environment to generate antibacterial active factors, and meanwhile, after being soaked in water, the liquid can also generate a rapid and efficient sterilization effect, no other chemical substances are separated out from the water, no adverse effect is generated on the human body or the ecological environment, and the product has the advantages of safety, environmental protection and energy saving, can be used as a dry-wet dual-purpose antibacterial paper towel, and can also be used as a skin contact layer of disposable sanitary products such as a diaper, a urine isolation pad, a breast isolation pad, a sanitary towel, a sanitary pad and the like.
The antibacterial nonwoven fabric provided in this example was cut Cheng Juanrao to a suitable size and loaded into a tissue box for use as a dry and wet antibacterial tissue.
Referring to fig. 2, a schematic structure of a tissue box suitable for a dry-wet dual-purpose antibacterial tissue is provided in this embodiment; a box cover 3 is arranged at the top of the tissue box shell 1, the box cover and the tissue box shell are connected together through a connecting part 2, and a box cover lock 4 is arranged to facilitate the opening and closing of the box cover; the cavity 6 for placing the antibacterial tissue 5 and the purified water reservoir 7 are arranged in the tissue box shell, and the purified water spray head 8 is arranged at the top of the purified water reservoir, so that a pressurized spray head can be adopted. The box cover lock is opened, the dry antibacterial paper towel can be directly taken out from the cavity, and purified water can be sprayed onto the paper towel through the purified water spray head, so that the wet antibacterial paper towel is obtained.
Example 3
Firstly preparing nano copper oxide containing hydroxyl, mixing and grinding the commercially available copper oxide with the mass ratio of 20-30 nm to polyvinylpyrrolidone, polyethylene glycol and glycerol of 1:0.1:0.4:0.2, and obtaining the nano copper oxide containing hydroxyl.
Adding 0.03% of nano copper oxide into PE material in a slice modification device to prepare a skin PE material, and adding 0.03% of nano zinc oxide into PET material in the slice modification device to prepare a modified PET core layer material; in the preparation of the composite fiber, the sheath material and the core material are respectively added into a melt pipeline for spinning, are extruded by double screws, are sprayed out by a composite spinning assembly, are cooled, formed, coiled, stretched, curled and shaped, and finally the ES sheath-core composite fiber is obtained, the ES hot rolled non-woven fabric is prepared by a hot rolled non-woven fabric processing technology, and test results show that the antibacterial rate of the hot rolled non-woven fabric for 2 minutes is 99%, the antibacterial rate of escherichia coli is 99%, the antibacterial rate of candida albicans is 99%, and the hot rolled non-woven fabric is soaked in deionized water for 24 hours according to the mass ratio of 1:30, so that no other chemical substances exist in test water. The antibacterial rate of the soaking water is over 99 percent.
Example 4
Firstly preparing nano molybdenum oxide containing hydroxyl, mixing and grinding commercially available 30-50 nm molybdenum oxide, polyvinylpyrrolidone, polyethylene glycol and glycerol according to the mass ratio of 1:0.1:0.4:0.2, and obtaining the nano molybdenum oxide containing hydroxyl.
Adding 0.03% of nano molybdenum oxide containing hydroxyl into PE material in a slice modification device to prepare a skin PE material, and adding 0.03% of nano molybdenum oxide containing hydroxyl into PET material in the slice modification device to prepare a modified PET core layer material; in the preparation of the composite fiber, the sheath material and the core material are respectively added into a melt pipeline for spinning, are extruded by double screws, are sprayed out by a composite spinning assembly, are cooled, formed, coiled, stretched, curled and shaped, and finally the ES sheath-core composite fiber is obtained, the ES hot rolled non-woven fabric is prepared by a hot rolled non-woven fabric processing technology, and test results show that the antibacterial rate of the hot rolled non-woven fabric for 2 minutes is 99%, the antibacterial rate of escherichia coli is 99%, the antibacterial rate of candida albicans is 99%, and the hot rolled non-woven fabric is soaked in deionized water for 24 hours according to the mass ratio of 1:30, so that no other chemical substances exist in test water. The antibacterial rate of the soaking water is over 99 percent.
Example 5
Adding 0.02% of the nano molybdenum oxide containing hydroxyl groups prepared in the example 4 and 0.02% of the nano zinc oxide containing hydroxyl groups prepared in the example 1 into a PE material in a slice modification device to prepare a skin PE material, and adding 0.02% of the nano molybdenum oxide containing hydroxyl groups and 0.02% of the nano zinc oxide containing hydroxyl groups into the PET material in the slice modification device to prepare a modified PET core layer material; in the preparation of the composite fiber, the sheath material and the core material are respectively added into a melt pipeline for spinning, are extruded by double screws, are sprayed out by a composite spinning assembly, are cooled, formed, wound, stretched, curled and shaped, and finally the ES sheath-core composite fiber is obtained, and the ES hot air non-woven fabric is prepared by using a hot air non-woven fabric processing technology, and test results show that the antibacterial rate of the hot air non-woven fabric for 2 minutes is 99%, the antibacterial rate of escherichia coli is 99%, the antibacterial rate of candida albicans is 99%, and the hot air non-woven fabric is soaked in deionized water for 24 hours according to the mass ratio of 1:30, so that no other chemical substances exist in test water. The antibacterial rate of the soaking water is over 99 percent.
Claims (6)
1. An antimicrobial fiber, characterized by: the fiber is an ES sheath-core heterojunction composite fiber, the sheath layer takes polyethylene as a base material, the core layer takes polyethylene terephthalate as a base material, and the sheath layer and the core layer are respectively doped with nano metal oxide containing hydroxyl with the mass percentage of 0.01-0.1%; the mass ratio of the skin layer to the core layer is 1:1-2.
2. An antimicrobial fiber according to claim 1, wherein: the nanometer metal oxide is one or more of zinc, copper, molybdenum, magnesium and titanium metal oxides.
3. The preparation method of the antibacterial fiber is characterized by comprising the following steps:
(1) Taking polyethylene as a skin layer substrate, taking polyethylene terephthalate as a core layer substrate, and respectively doping nano metal oxides containing hydroxyl into the polyethylene and the polyethylene terephthalate according to the mass percentage of 0.01-0.1%, so as to prepare skin layer and core layer raw materials;
(2) And (3) respectively adding the raw materials of the skin layer and the core layer prepared in the step (1) into a melt double pipeline of a spinning machine according to the mass ratio of 1:1-2, extruding through double screws, spraying through a composite spinning assembly, cooling, forming, winding, stretching, curling and shaping to obtain the ES skin-core heterojunction composite fiber.
4. The preparation method of the dry-wet dual-purpose antibacterial non-woven fabric is characterized by comprising the following steps of:
(1) Taking polyethylene as a skin layer substrate, taking polyethylene terephthalate as a core layer substrate, and respectively doping nano metal oxide containing hydroxyl into the polyethylene and the polyethylene terephthalate according to the mass percentage of 0.01-0.1%, so as to prepare skin layer and core layer raw materials;
(2) Respectively adding the raw materials of the skin layer and the core layer prepared in the step (1) into a melt double pipeline of a spinning machine according to the mass ratio of 1:1-2, extruding through double screws, spraying out through a composite spinning assembly, and cooling, forming, winding, stretching, curling and shaping to obtain the ES skin-core heterojunction composite fiber;
(3) The dry-wet antibacterial non-woven fabric is prepared by spreading through hot air or hot rolling technology.
5. The method for preparing the dry-wet antibacterial non-woven fabric, which is disclosed in claim 4, is characterized in that: the nanometer metal oxide is one or more of zinc, copper, molybdenum, magnesium and titanium metal oxides.
6. A dry-wet antibacterial nonwoven fabric obtained by the method of claim 4.
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