CN110699847A - Non-woven fabric loaded with nano antibacterial particles on line and preparation method and application thereof - Google Patents
Non-woven fabric loaded with nano antibacterial particles on line and preparation method and application thereof Download PDFInfo
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- CN110699847A CN110699847A CN201910930687.1A CN201910930687A CN110699847A CN 110699847 A CN110699847 A CN 110699847A CN 201910930687 A CN201910930687 A CN 201910930687A CN 110699847 A CN110699847 A CN 110699847A
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- 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
- D04H1/413—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 containing granules other than absorbent substances
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- 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
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
- D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
Abstract
The invention discloses a non-woven fabric loaded with nanometer antibacterial particles on line and a preparation method and application thereof. The non-woven fabric with the natural antibacterial agent nano particles loaded on the surface has the killing rate of 99.9 percent on escherichia coli and staphylococcus, is simple in preparation method and environment-friendly, adopts the natural antibacterial agent, is safe and free of toxic and side effects, and is suitable for being widely applied to the antibacterial fields of medical treatment, environmental protection and the like.
Description
Technical Field
The invention relates to the technical field of non-woven fabrics, in particular to a non-woven fabric loaded with nano antibacterial particles on line and a preparation method and application thereof.
Background
Nonwoven fabrics (nonwovens) are formed by orienting or randomly arranging textile staple fibers or filaments to form a web structure, and then consolidating the web structure by mechanical, thermal or chemical means. The non-woven fabric breaks through the traditional spinning principle, has the characteristics of short process flow, high production speed, high yield, low cost, wide application, multiple raw material sources and the like, and is widely applied to daily production and life. However, in the process of processing and spinning nonwoven fabrics, various additives and oil agents are required to be added, so that microorganisms and bacteria can also attach and grow on the fibers under appropriate temperature and humidity conditions. Therefore, research and development of fibers with antibacterial properties are of great significance.
The commonly used antibacterial agents currently used for modifying fibers mainly comprise three types of organic antibacterial agents, inorganic antibacterial agents and natural antibacterial agents. The components of the organic antibacterial agent mainly comprise organic acid, phenol, alcohol and ester, and comprise quaternary ammonium salts, organic silicon quaternary ammonium salts, guanidines, halamine compounds and the like, and the organic antibacterial agent has an obvious sterilization effect. The organic antibacterial agent can inhibit the proliferation of microorganisms by binding with the cell membrane of microorganisms such as bacteria to block protein synthesis, destroy the cell membrane. However, the use of organic antibacterial agents is liable to cause drug resistance of bacteria, and has serious toxic and side effects, which may cause harm to human bodies, so that the organic antibacterial agents cannot be used for functional treatment of fibers. The inorganic antibacterial agent is mostly a compound of inorganic silver, zinc and copper ions, belongs to a non-dissolution antibacterial mechanism, has long antibacterial validity period, wide antibacterial spectrum and small irritation to skin, but has late antibacterial action, larger minimum bacteriostatic concentration value to fungi and lower antifungal efficiency. The natural antibacterial agent is mainly natural components such as proteins, saccharides, oils and phenolic compounds extracted from animals and plants, and has the characteristics of low toxic and side effects, safe use and the like. The representative of the animal-derived natural antibacterial agent is chitosan, which has good biocompatibility, broad-spectrum antibacterial property and the like, has the effects of diminishing inflammation and promoting wound healing, and is widely applied to the medical and health industry.
When a fiber product with antibacterial property is prepared by modifying fiber with an antibacterial agent, the existing manufacturing methods mainly comprise the following two methods:
firstly, the antibacterial agent is melted (or dissolved) into the fiber polymer material in the processing, namely the antibacterial agent is blended in the fiber-forming polymer and is kept in the polymer matrix, which is called spinning antibacterial technology, but the addition of the antibacterial agent can seriously affect the spinnability of the polymer fiber, so that a compatilizer is additionally added to ensure that the antibacterial agent is compatible with the fiber, and the antibacterial fiber with good mechanical property can be prepared, thereby restricting the application development of the antibacterial fiber.
Secondly, the antibacterial agent is applied to the surface layer of the fiber, namely the surface layer which penetrates to a certain depth of the fiber or is adhered to the surface of the fiber, so that the fiber has antibacterial property with certain lasting performance, which is called as a post-finishing antibacterial technology.
Therefore, there is a need to research and develop an antibacterial finishing technology to realize the safe, efficient and durable antibacterial of fiber products while maintaining the excellent spinnability and mechanical properties thereof.
Disclosure of Invention
The invention aims to solve the problems of insufficient compatibility and antibacterial performance of an antibacterial agent and fibers in a spinning process in the prior art, and provides a non-woven fabric loaded with nano antibacterial particles on line and a preparation method and application thereof.
In order to achieve the purpose, the invention adopts the technical scheme that:
a non-woven fabric loaded with nano antibacterial particles on line comprises polymer fibers and natural antibacterial agent nano particles loaded on the surfaces of the polymer fibers through jetting of a melt-blown airflow.
As a further limitation of the above technical solution, the polymer fiber is one or a combination of polypropylene fiber, polyethylene fiber or polyamide fiber.
As a further limitation of the above technical solution, the natural antibacterial agent is one or a combination of chitosan, carvacrol, thymol, oregano oil, cinnamaldehyde or citral.
As a further limitation of the technical scheme, the particle size of the natural antibacterial agent nano particles is 20 nm-1 μm.
As a further limitation of the technical scheme, the loading amount of the natural antibacterial agent nano particles accounts for 0.5-5% of the total mass of the non-woven fabric.
The invention also provides a preparation method of the non-woven fabric loaded with the nano antibacterial particles on line, which comprises the following steps:
s1, melting the dried polymer spinning raw material in a screw extruder, spraying out from a spinneret orifice, and carrying out melt spinning to obtain polymer melt fiber;
s2, blowing the natural antibacterial agent nano particles to the surface of the polymer melt fiber through a melt-blown high-speed airflow, and cooling to obtain the polymer fiber with the natural antibacterial agent nano particles loaded on the surface;
s3, the polymer fibers prepared in the step S2 fall on the net-forming curtain to be mutually bonded to form the non-woven fabric with the surface loaded with the nano antibacterial particles.
As a further limitation of the above technical solution, in step S1, the receiving distance of the melt spinning is 10 to 30cm, and the diameter of the spinneret hole is 0.1 to 1 mm.
As a further limitation of the technical scheme, in step S2, the temperature of the melt-blown airflow is 200-240 ℃, the flow speed of the melt-blown high-speed airflow is 300-500 m/S, and the blowing amount of the natural antibacterial agent nanoparticles is 10-30 mg/S.
The invention also provides application of the non-woven fabric loaded with the nano antibacterial particles on line in preparation of medical and/or environment-friendly antibacterial products.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the non-woven fabric with the surface loaded with the nano antibacterial particles, the natural antibacterial nanoparticles are added into the air flow of the conventional melt-blown processing, and the antibacterial nanoparticles are loaded on the surface of the polymer melt fiber by utilizing the action of the high-speed blowing air flow in the melt-blown processing. In the traditional method, the antibacterial nano particles are mainly dispersed in the spinning solution to carry out solution spinning, if the addition amount of the antibacterial agent is too much, the spinning performance of the spinning solution can be influenced, the mechanical property, the air permeability and the like of the polymer fiber are further influenced, and the excellent comprehensive performance of the non-woven fabric is difficult to maintain.
(2) According to the invention, by reasonably regulating and controlling the melt temperature, the temperature and the speed of the blowing air flow, the blowing amount of the antibacterial nanoparticles and the like, single-layer or multi-layer antibacterial nanoparticles can be accurately loaded on the surface of the polymer fiber melt, so that the antibacterial performance of the non-woven fabric can be accurately regulated and controlled.
(3) The non-woven fabric loaded with the nano antibacterial particles on the surface can be applied to medical and environment-friendly antibacterial products, and the killing rate of the non-woven fabric loaded with the chitosan nano particles on escherichia coli and staphylococcus reaches 99.9%.
(4) The antibacterial non-woven fabric provided by the invention adopts a natural antibacterial agent, and the antibacterial nano particles are embedded on the polymer melt fibers, so that the antibacterial agent is not easy to fall off, and the antibacterial non-woven fabric can keep good biocompatibility and remarkable antibacterial and bactericidal capability for a long time. Meanwhile, the preparation method is simple, environment-friendly and suitable for being widely applied to the fields of medical treatment and environmental protection and bacteriostasis.
Drawings
Fig. 1 is a schematic diagram of the principle of loading nano-antibacterial particles on line according to the present invention.
Fig. 2 (a) and (b) are an optical photograph and a scanning electron microscope characterization chart of the polypropylene fiber nonwoven fabric with chitosan nanoparticles loaded on the surface, prepared in example 1, respectively.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the present invention is further described in detail with reference to the following embodiments; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention; reagents, methods and apparatus used in the present invention are conventional in the art unless otherwise indicated.
According to the invention, the antibacterial nano particles are conveyed into the airflow generator by assembling the particle feeding device and the conveying pipeline at the front end of the airflow generator of the existing melt-blown spinning equipment, so that the antibacterial nano particles can be sprayed and loaded to the surface of a fiber melt along with airflow; in addition, the recovery device of particle jet air current is assembled on both sides of the collection end of the fiber, and is used for recovering the antibacterial nano particles which are not loaded on the surface of the polymer melt fiber, and the antibacterial nano particles are recycled after being screened, so that the antibacterial nano particles are prevented from being diffused into the air to cause pollution and waste. The transformation method of the whole process is simple and feasible, and a new effective way for online blowing load is provided for the antibacterial modification of the fiber non-woven fabric.
Referring to fig. 1, the non-woven fabric with the surface loaded with the nano antibacterial particles provided by the invention utilizes the transformation process and adds the nano antibacterial particles into the air flow of the conventional melt-blown processing to realize the online blowing loading of the nano antibacterial particles. The principle of the invention for realizing the online blowing load of the antibacterial nano particles is as follows: after the polymer fiber raw material is melted and extruded, the fiber shows a process of gradually changing from a melt state to a solid state from a spinneret to a fiber collecting end, and simultaneously, the high speed and high power drawing are accompanied. When the fiber is in a melt state, the surface temperature of the fiber can reach 300 ℃, the physical property of the fiber melt is represented by liquid property, the whole stress of a surface molecular layer is unstable, and the fiber melt presents stronger surface tension, and meanwhile, spinning melt macromolecules can freely move and slide, so that possibility is provided for surface deformation of the fiber melt. The high surface tension and the easy deformation characteristic of the fiber melt provide a natural place for the composite functional particles, the antibacterial nano particles are dispersed in an airflow field of melt-blown spinning, so that the antibacterial nano particles are sprayed to the surface of the fiber melt with certain kinetic energy while the airflow has the original blowing and stretching effects on melt fibers, and then the antibacterial nano particles are drawn, laid and formed along with the fiber melt, so that the aim of loading the antibacterial nano particles on the fiber melt on line is fulfilled, and a product with excellent antibacterial performance is prepared.
In the whole spinning process, the temperature of fiber melt, the diameter of a spinning nozzle, the receiving distance, the temperature and the speed of air flow, the content of functional particles in the air flow and the blowing amount of antibacterial nano particles can have obvious influence on the quantity, the uniformity and the fastness of the on-line loading of the fiber melt.
Wherein the temperature of the fiber melt determines the surface tension and the adhesion of the fiber melt, thereby influencing the load fastness of the functional particles, and the temperature of the fiber melt is basically the same as the extrusion temperature of the melt fiber. Therefore, the invention selects proper extrusion temperature according to the melting characteristics of the polymer fiber raw material, for example, the preferred extrusion temperature of the polypropylene fiber is 240 ℃, and the preferred extrusion temperature of the polyethylene fiber is 230 ℃.
The spinning aperture and the receiving distance are closely related to the fiber diameter, the receiving distance is large, the jet loading capacity can be correspondingly increased, the spinning parameters can be reasonably regulated and controlled according to actual requirements, the receiving distance of melt spinning is preferably 10-30 cm, and the spinning aperture is preferably 0.1-1 mm.
The airflow rate and the quality of the functional particles influence the kinetic energy of the functional particles, the airflow rate is in a direct proportion relation with the load fastness of the functional particles, and the content of the functional particles in the airflow determines the load capacity and the load uniformity of the functional particles on the fiber surface. Therefore, when the melt-blown airflow is adopted, the temperature of the airflow is preferably 200-240 ℃, the flow speed of the melt-blown high-speed airflow is 300-500 m/s, and the blowing amount of the natural antibacterial agent nanoparticles is 10-30 mg/s. The invention selects natural antibacterial nanometer particles with the particle diameter of 20 nm-1 μm, and within the range, the antibacterial agent can keep higher antibacterial activity, and is beneficial to inlaying the antibacterial agent on the surface of the polymer melt fiber to improve the load firmness, thereby keeping the long-term and high-efficiency antibacterial activity of the fiber product and prolonging the service life of the non-woven fabric.
In the following embodiment, the antibacterial property, mechanical property and washing resistance of the prepared non-woven fabric are tested, and the specific test method is as follows.
And (3) antibacterial property: reference is made to GB/T20944.3-2008 section 3 for evaluation of antibacterial properties of textiles: shaking method, selecting Staphylococcus aureus and Escherichia coli.
Washing fastness: the sample to be tested was subjected to standard washing according to the washfastness test method in AATCC 61-2007. The method comprises the following specific steps: preheating the non-woven fabric to 40 ℃ in advance by using a washing machine, putting the non-woven fabric with the specification of 5cm multiplied by 10cm into a washing cup containing 200mL of soap lotion and 10 steel balls with the diameter of 6mm, putting the non-woven fabric into the washing machine, running for 45min, recording as washing once (equivalent to washing 5 times at home), washing the non-woven fabric for 10 times, and detecting the antibacterial activity of the non-woven fabric.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Example 1
A non-woven fabric loaded with nano antibacterial particles on line comprises polypropylene fibers and chitosan nanoparticles loaded on the surfaces of the polypropylene fibers by jetting of melt-blown airflow; the average particle size of the chitosan nanoparticles is 100 nm.
The preparation method of the non-woven fabric loaded with the nano antibacterial particles on line comprises the following steps:
s1, melting the dried polypropylene spinning raw material in a screw extruder, spraying out from a spinneret orifice, and carrying out melt spinning to obtain polypropylene melt fiber;
wherein the polypropylene melt extrusion temperature is 240 ℃, the spinning aperture is 0.16mm, and the receiving distance is 20 cm;
s2, blowing the chitosan nanoparticles to the surface of the polypropylene melt fiber through melt-blown high-speed airflow, and cooling to obtain the polymer fiber with the chitosan nanoparticles loaded on the surface;
wherein the temperature of the air flow is 220 ℃, the flow rate of the air flow is 400m/s, and the spraying amount of the chitosan nanoparticles is 20 mg/s;
s3, the polypropylene fibers obtained in the step S2 fall on a net forming curtain to be mutually bonded to form the polypropylene fiber non-woven fabric with the surface loaded with the nano antibacterial particles.
Fig. 2 (a) and (b) are an optical photograph and a scanning electron microscope characterization chart of the polypropylene fiber non-woven fabric with chitosan nanoparticles loaded on the surface, respectively, prepared in this example, and it can be seen from fig. 2 (b) that the chitosan nanoparticles are uniformly embedded in the surface of the polypropylene fiber, thereby indicating that the chitosan nanoparticle antibacterial agent is successfully loaded on the surface of the polypropylene fiber.
Examples 2 to 9
Examples 2 to 9 provide a non-woven fabric on-line loaded with nano-antibacterial particles, which is different from example 1 in that the receiving distance and/or the spinneret aperture of the melt spinning are/is changed in step S1 of the preparation method of the non-woven fabric, and other operations are the same and are not repeated herein, and specific experimental condition parameters and performance test results are shown in the following table.
As can be seen from the results of examples 1 to 5 in the table, the antibacterial property and the washing resistance of the nonwoven fabric having chitosan nanoparticles supported on the surface thereof tend to increase as a whole with the increase of the receiving distance during the melt spinning process, and when the receiving distance is 20cm, the antibacterial property and the washing resistance of the nonwoven fabric are optimized, and the receiving distance during the melt spinning process is further increased, so that the antibacterial property and the washing resistance of the nonwoven fabric are slightly decreased.
Comparing the results of examples 1 and 6 to 9 in the table, it can be seen that the antibacterial property and the washing resistance of the prepared nonwoven fabric loaded with chitosan nanoparticles on the surface tend to increase and decrease with the increase of the spinneret aperture in the melt spinning process, and the antibacterial property and the washing resistance of the prepared nonwoven fabric reach the best when the spinneret aperture is 0.16 mm.
Examples 10 to 21
Examples 10 to 21 provide a non-woven fabric on-line loaded with nano-antibacterial particles, which is different from example 1 in that the temperature of the meltblown gas stream and/or the flow rate of the meltblown gas stream and/or the blowing amount of the natural antibacterial agent nanoparticles in step S2 of the method for preparing a non-woven fabric are changed, and other operations are the same and are not repeated herein, and specific experimental condition parameters and performance test results are shown in the following table.
Comparing the results of examples 1 and 10 to 13 in the table, it is known that, as the temperature of the jet air flow increases in step S2, the antibacterial property and the washing resistance of the prepared nonwoven fabric with chitosan nanoparticles loaded on the surface thereof tend to increase as a whole, when the temperature of the jet air flow is 220 ℃, the antibacterial property and the washing resistance of the prepared nonwoven fabric reach the optimum, and the temperature of the jet air flow is increased, the antibacterial property and the washing resistance of the prepared nonwoven fabric are slightly reduced, which may be caused by the excessively high temperature of the jet air flow, which may reduce the activity of the chitosan natural antibacterial agent, and is not favorable for the optimum antibacterial performance. Therefore, the temperature of the jet air flow is preferably 200-240 ℃.
Comparing the results of examples 1 and 14 to 17 in the table, it is known that, as the jet air velocity is increased in step S2, the antibacterial property and the washing fastness of the prepared nonwoven fabric with chitosan nanoparticles loaded on the surface thereof tend to increase as a whole, when the jet air velocity reaches 400m/S, the antibacterial property and the washing fastness of the prepared nonwoven fabric are optimized, and the air temperature is further increased, so that the antibacterial property and the washing fastness of the prepared nonwoven fabric are slightly reduced, which may be caused by that when the jet air velocity is too high, the loading of the chitosan natural antibacterial agent is not facilitated, thereby reducing the antibacterial property of the nonwoven fabric. Therefore, the present invention preferably has a jet air flow velocity of 300 to 500 m/s.
As can be seen from the results of comparing examples 1 with examples 18 to 21 in the table, the antibacterial property and the washing fastness of the prepared nonwoven fabric with chitosan nanoparticles loaded on the surface thereof tend to increase as the amount of chitosan antibacterial agent sprayed in step S2 increases, the antibacterial property and the washing fastness of the prepared nonwoven fabric are optimized when the amount of chitosan antibacterial agent sprayed reaches 20mg/S, and the amount of antibacterial agent sprayed is increased continuously, so that the antibacterial property and the washing fastness of the prepared nonwoven fabric are not significantly affected. Therefore, in the present invention, it is preferable that the amount of the antimicrobial agent to be sprayed is 10 to 30mg/s from the viewpoint of saving the cost of raw materials.
Example 22
The embodiment provides a non-woven fabric loaded with nano-antibacterial particles on line, which is composed of polyethylene fibers and citral nano-particles loaded on the surfaces of the polyethylene fibers through melt-blown airflow, wherein the average particle size of the citral is 500 nm.
The preparation method of the non-woven fabric loaded with the nano antibacterial particles on line comprises the following steps:
s1, melting the dried polyethylene fiber spinning raw material in a double-screw extruder, and then spraying the polyethylene fiber spinning raw material from a spinneret orifice to perform melt spinning;
wherein the polyethylene melt extrusion temperature is 230 ℃, the spinneret aperture is 0.16mm, and the receiving distance is 20 cm;
s2, blowing the citral nanoparticles to the surface of the polyethylene melt fiber through melt-blown high-speed airflow, and cooling to obtain the polyethylene fiber with the citral nanoparticles loaded on the surface;
wherein the temperature of the airflow is room temperature, the flow rate of the airflow is 400m/s, and the injection quantity of the functional micro-nano particles is 20 mg/s;
s3, the polyethylene fibers obtained in the step S2 fall on a net forming curtain to be mutually bonded to form the polyethylene fiber non-woven fabric with the surface loaded with the nano antibacterial particles.
The bacteriostasis rate of the non-woven fabric prepared by the embodiment to staphylococcus aureus and escherichia coli reaches 99.9%, and the bacteriostasis rate of the non-woven fabric is still as high as 99.8% after the non-woven fabric is washed for 10 times.
While the invention has been described with respect to specific embodiments thereof, it will be understood by those skilled in the art that the foregoing and other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention; those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention; meanwhile, any equivalent changes, modifications and alterations of the above embodiments according to the spirit and techniques of the present invention are also within the scope of the present invention.
Claims (9)
1. A non-woven fabric loaded with nano antibacterial particles on line is characterized by comprising polymer fibers and natural antibacterial nanoparticles loaded on the surfaces of the polymer fibers by jetting a melt-blown airflow.
2. The non-woven fabric loaded with nano-antibacterial particles in-line according to claim 1, wherein the polymer fibers are one or more of polypropylene fibers, polyethylene fibers or polyamide fibers.
3. The non-woven fabric loaded with the nano-antibacterial particles in-line according to claim 1, wherein the natural antibacterial agent is one or more of chitosan, carvacrol, thymol, oregano oil, cinnamaldehyde or citral.
4. The non-woven fabric loaded with nano-antibacterial particles on line according to claim 1, wherein the natural antibacterial agent nanoparticles have a particle size of 20nm to 1 μm.
5. The non-woven fabric capable of loading the nano-antibacterial particles on line according to any one of claims 1 to 4, wherein the loading amount of the natural antibacterial agent nano-particles is 0.5 to 5 percent of the total mass of the non-woven fabric.
6. The method for preparing the non-woven fabric loaded with the nano-antibacterial particles on line according to any one of claims 1 to 5, characterized by comprising the following steps:
s1, melting the dried polymer spinning raw material in a screw extruder, spraying out from a spinneret orifice, and carrying out melt spinning to obtain polymer melt fiber;
s2, blowing the natural antibacterial agent nano particles to the surface of the polymer melt fiber through a melt-blown high-speed airflow, and cooling to obtain the polymer fiber with the natural antibacterial agent nano particles loaded on the surface;
s3, the polymer fibers prepared in the step S2 fall on the net-forming curtain to be mutually bonded to form the non-woven fabric with the surface loaded with the nano antibacterial particles.
7. The method for preparing the non-woven fabric loaded with the nano-antibacterial particles on line according to claim 6, wherein in step S1, the receiving distance of the melt spinning is 10 to 30cm, and the diameter of the spinning hole is 0.1 to 1 mm.
8. The method for preparing the non-woven fabric loaded with the nano-antibacterial particles on line according to claim 6, wherein in step S2, the temperature of the melt-blown airflow is 200-240 ℃, the flow rate of the melt-blown high-speed airflow is 300-500 m/S, and the blowing amount of the natural antibacterial agent nanoparticles is 10-30 mg/S.
9. The non-woven fabric with the on-line nano-antibacterial particles loaded thereon according to any one of claims 1 to 5 or the non-woven fabric with the nano-antibacterial particles loaded on the surface prepared by the method according to any one of claims 6 to 8 is characterized by application of the non-woven fabric with the nano-antibacterial particles loaded thereon in preparation of medical and/or environment-friendly bacteriostatic products.
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