CN109487532B - Hydrophilic antibacterial non-woven fabric and preparation method thereof - Google Patents
Hydrophilic antibacterial non-woven fabric and preparation method thereof Download PDFInfo
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- CN109487532B CN109487532B CN201811190095.2A CN201811190095A CN109487532B CN 109487532 B CN109487532 B CN 109487532B CN 201811190095 A CN201811190095 A CN 201811190095A CN 109487532 B CN109487532 B CN 109487532B
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- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
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Abstract
The invention discloses a hydrophilic antibacterial non-woven fabric and a preparation method thereof, wherein the hydrophilic antibacterial non-woven fabric comprises a polypropylene anti-sticking non-woven fabric substrate and a water-based antibacterial layer; the corona mode for processing the film material is introduced into the surface treatment of the polypropylene anti-sticking non-woven fabric, and the polypropylene anti-sticking non-woven fabric has good hydrophilic performance through the corona treatment, is simple and quick in processing process and low in cost, and has small influence on other performances of the polypropylene anti-sticking non-woven fabric.
Description
Technical Field
The invention relates to the technical field of non-woven fabric production, in particular to a hydrophilic antibacterial non-woven fabric and a preparation method thereof.
Background
Nonwoven fabrics, also known as nonwovens, are composed of oriented or random fibers and are referred to as fabrics because of their appearance and certain properties. The non-woven fabric has the characteristics of moisture resistance, air permeability, flexibility, light weight, no combustion supporting, easy decomposition, no toxicity or irritation, rich color, low price, recycling and the like.
Due to the processing characteristics and product cost of the non-woven fabric, synthetic fibers are mostly adopted as raw materials for a long time, most of terylene and polypropylene fibers are adopted, and the mixed fibers of the synthetic fibers and natural fibers are adopted as raw materials individually, so that the non-woven fabric generally has high water repellency and poor hydrophilic performance. However, the nonwoven fabric has a high demand for its hydrophilic property in the fields of medical care, clothing, wiping, and the like. The hydrophilic performance of the non-woven fabric can be improved by a physical or chemical method, and the method mainly comprises protofilament modification, surface grafting modification, hydrophilic finishing and the like. The hydrophilic finishing is the most common method for application because of the characteristics of simple and convenient method, low cost, remarkable economic benefit and the like. However, the components of the hydrophilic agent used in hydrophilic finishing are complex, and some chemical components are introduced in the process of processing the non-woven fabric, so that the performance of the non-woven fabric can be affected, such as durability; particularly, a lot of unknown influence factors are increased for the non-woven fabric which needs to be added with antibacterial components, antistatic treatment and the like. Therefore, it is necessary to find a method which is simple, fast and low in cost, can increase the hydrophilicity of the non-woven fabric and does not introduce other components.
Disclosure of Invention
The invention aims to provide a hydrophilic antibacterial non-woven fabric and a preparation method thereof, and aims to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
the hydrophilic antibacterial non-woven fabric comprises a polypropylene anti-sticking non-woven fabric substrate and a water-based antibacterial layer, wherein the water-based antibacterial layer comprises the following raw materials in parts by weight: 0.5-5% of sodium alginate, 3-5% of chitosan, 1-10% of biological dye-methylene blue, 0.1-5% of phthalocyanine photosensitizer, 0.5-1.5% of n-butyl alcohol, 0.5-5% of sodium caprylate, 20-30% of DMSO, 0.1-0.5% of metal ion complexing agent EDTA, 0.1-15% of benzalkonium bromide dimethylbenzyl ammonium bromide and 55-90% of purified water.
The sodium alginate and the chitosan both contain a large number of hydrophilic groups such as hydroxyl, amino and the like, so that the polypropylene anti-sticking non-woven fabric has good hydrophilicity, hygroscopicity and biocompatibility, and has the effects of resisting bacteria, diminishing inflammation and relieving itching; DMSO (dimethyl sulfoxide) has the characteristic of mutual solubility with water and various solvents, and when the DMSO is used on a polypropylene anti-sticking non-woven fabric substrate, the hydrophilicity of the surface of the non-woven fabric can be improved, so that the polypropylene anti-sticking non-woven fabric has high water absorption; the biological dye methylene blue and phthalocyanine photosensitizer are effective photosensitive antibacterial agents, have good antibacterial photodynamic activity on gram-positive bacteria and gram-negative bacteria, and can enable the non-woven fabric to have high-efficiency antibacterial performance under the promotion of ultraviolet light or visible light; sodium caprylate has inhibitory effect on fungi, especially mold; the metal ion complexing agent EDTA (ethylene diamine tetraacetic acid) can inactivate enzyme and protein of microorganisms, has an inhibiting effect on the microorganisms, can reduce the polymerization of phthalocyanines and biological dye photosensitizers in water, and enhances the photodynamic sterilization performance; the benzalkonium bromide and dimethyl benzyl ammonium bromide has strong killing effect on bacteria, fungi, mold, spores and the like, and can be used for polypropylene anti-sticking non-woven fabrics to ensure that the polypropylene anti-sticking non-woven fabrics have good sterilization and bacteriostasis effects.
Preferably, the aqueous antibacterial layer comprises the following raw materials in parts by weight: 1-4% of sodium alginate, 3-4% of chitosan, 2-5% of biological dye-methylene blue, 0.5-4% of phthalocyanine photosensitizer, 0.5-1.0% of n-butyl alcohol, 1-4% of sodium caprylate, 22-28% of DMSO, 0.2-0.4% of metal ion complexing agent EDTA, 1-10% of benzalkonium bromide dimethylbenzyl ammonium bromide and 60-80% of purified water.
Further, a preparation method of the hydrophilic antibacterial non-woven fabric comprises the following steps:
(1) the polypropylene anti-sticking non-woven fabric base material is placed on a roller, the running speed of the non-woven fabric is 5m/min, corona treatment is carried out on the surface of the polypropylene anti-sticking non-woven fabric base material through a corona machine, an oblique discharge blade is adopted for corona treatment, the inclination angle between the discharge blade and the surface of the polypropylene anti-sticking non-woven fabric base material is 20-50 degrees, the height is 5-9mm, the voltage is 9000-11000V, the pulse frequency is 10-25KHz, the surface roughness of the polypropylene anti-sticking non-woven fabric base material reaches 0.8-1.6 mu m, and the surface tension reaches 35-45 dyn/cm;
(2) fully reacting 0.5-5% of sodium alginate, 3-5% of chitosan, 1-10% of biological dye-methylene blue, 0.1-5% of phthalocyanine photosensitizer, 0.5-1.5% of n-butyl alcohol, 0.5-5% of sodium caprylate, 20-30% of DMSO, 0.1-0.5% of metal ion complexing agent EDTA and 0.1-15% of benzalkonium bromide and dimethyl benzyl ammonium bromide, dissolving the obtained product in 55-90% of purified water to obtain an aqueous antibacterial solution, diluting the aqueous antibacterial solution by 10 times, filling the obtained aqueous antibacterial solution into a dipping tank, and dipping the polypropylene anti-sticking non-woven fabric substrate obtained in the step (1) into the dipping tank to ensure that the polypropylene anti-sticking non-woven fabric substrate is dipped with the aqueous antibacterial solution, wherein the running speed of the non-woven fabric is 5 m/min;
(3) extruding the polypropylene anti-sticking non-woven fabric base material which is soaked with the water-based antibacterial solution and obtained in the step (2) by an upper roller and a lower roller, conveying the extruded base material to a drying tunnel by a conveyor belt, wherein the traveling speed of the non-woven fabric is 5m/min, drying the non-woven fabric in the drying tunnel by high temperature and hot air, wherein the drying tunnel consists of nine drying ovens, the length of each drying oven is 2 meters, the temperature in the drying tunnel is 75-95 ℃, cooling the drying tunnel to the room temperature, and then rolling the drying tunnel to obtain the hydrophilic antibacterial non-woven fabric.
Compared with the prior art, the invention has the beneficial effects that: the invention relates to a hydrophilic antibacterial non-woven fabric and a preparation method thereof, and provides a treatment method for increasing the hydrophilic property of the non-woven fabric. The non-woven fabric is treated by the corona machine, so that the hydrophilic property is increased, the original water repellency can be converted into instant water absorption, the non-woven fabric has good water absorption uniformity, water retention rate, moisture permeability and the like, electric sparks generated in the corona process ionize air, and ions ionized by the air impact the surface of the non-woven fabric under the action of an electric field, so that surface molecules of the non-woven fabric are broken; meanwhile, ozone is generated during discharge, so that the hydrocarbon group of the polypropylene is converted into polar groups such as hydroxyl, carbonyl and the like, and the hydrophilicity of the non-woven fabric is obviously improved; the method has the advantages of simple and quick treatment process, low cost and small influence on other properties of the non-woven fabric.
Drawings
FIG. 1 is a flow chart of a process for preparing a hydrophilic antibacterial non-woven fabric according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the hydrophilic antibacterial non-woven fabric comprises a polypropylene anti-sticking non-woven fabric substrate and a water-based antibacterial layer, wherein the water-based antibacterial layer comprises the following raw materials in parts by weight: 0.5% of sodium alginate, 3% of chitosan, 1% of biological dye-methylene blue, 0.1% of phthalocyanine photosensitizer, 0.5% of n-butyl alcohol, 0.5% of sodium caprylate, 20% of DMSO, 0.1% of metal ion complexing agent EDTA, 0.1% of benzalkonium bromide dimethylbenzyl hydrocarbon ammonium bromide and 55% of purified water.
As shown in fig. 1, a method for preparing a hydrophilic antibacterial non-woven fabric includes the following steps:
(1) the polypropylene anti-sticking non-woven fabric base material is placed on a roller, the running speed of the non-woven fabric is 5m/min, corona treatment is carried out on the surface of the polypropylene anti-sticking non-woven fabric base material through a corona machine, an oblique discharge blade is adopted for corona treatment, the inclination angle between the discharge blade and the surface of the polypropylene anti-sticking non-woven fabric base material is 20 degrees, the height is 5mm, the voltage is 9000V, the pulse frequency is 10KHz, the surface roughness of the polypropylene anti-sticking non-woven fabric base material reaches 0.8 mu m, and the surface tension reaches 35 dyn/cm;
(2) fully reacting 0.5% of sodium alginate, 3% of chitosan, 1% of biological dye-methylene blue, 0.1% of phthalocyanine photosensitizer, 0.5% of n-butyl alcohol, 0.5% of sodium caprylate, 20% of DMSO, 0.1% of metal ion complexing agent EDTA and 0.1% of benzalkonium bromide dimethyl benzyl hydrocarbon ammonium bromide, dissolving in 55% of purified water to prepare an aqueous antibacterial solution, diluting the aqueous antibacterial solution by 10 times, and then putting into an impregnation tank, immersing the polypropylene anti-sticking non-woven fabric substrate obtained in the step (1) into the anti-sticking impregnation tank, and immersing the polypropylene non-woven fabric substrate into the aqueous antibacterial solution, wherein the traveling speed of the non-woven fabric is 5 m/min;
(3) extruding the polypropylene anti-sticking non-woven fabric base material which is soaked with the water-based antibacterial solution and obtained in the step (2) by an upper roller and a lower roller, conveying the extruded base material to a drying tunnel by a conveyor belt, wherein the running speed of the non-woven fabric is 5m/min, drying the non-woven fabric in the drying tunnel by high temperature and hot air, wherein the drying tunnel consists of nine drying ovens, the length of each drying oven is 2 meters, the temperature in the drying tunnel is 75 ℃, cooling the non-woven fabric to room temperature, and then rolling the non-woven fabric to obtain the hydrophilic antibacterial non-woven fabric.
Example 2:
the hydrophilic antibacterial non-woven fabric comprises a polypropylene anti-sticking non-woven fabric substrate and a water-based antibacterial layer, wherein the water-based antibacterial layer comprises the following raw materials in parts by weight: 1% of sodium alginate, 4% of chitosan, 2% of biological dye-methylene blue, 1% of phthalocyanine photosensitizer, 1% of n-butanol, 1% of sodium caprylate, 22% of DMSO, 0.2% of metal ion complexing agent EDTA, 1% of benzalkonium bromide dimethylbenzyl hydrocarbon ammonium bromide and 60% of purified water.
As shown in fig. 1, a method for preparing a hydrophilic antibacterial non-woven fabric includes the following steps:
(1) the polypropylene anti-sticking non-woven fabric base material is placed on a roller, the running speed of the non-woven fabric is 5m/min, corona treatment is carried out on the surface of the polypropylene anti-sticking non-woven fabric base material through a corona machine, an oblique discharge blade is adopted for corona treatment, the inclination angle between the discharge blade and the surface of the polypropylene anti-sticking non-woven fabric base material is 30 degrees, the height is 6mm, the voltage is 9500V, the pulse frequency is 15KHz, the surface roughness of the polypropylene anti-sticking non-woven fabric base material is enabled to reach 1.0 mu m, and the surface tension reaches 38 dyn/cm;
(2) fully reacting 1% of sodium alginate, 4% of chitosan, 2% of biological dye-methylene blue, 1% of phthalocyanine photosensitizer, 1% of n-butyl alcohol, 1% of sodium caprylate, 22% of DMSO, 0.2% of metal ion complexing agent EDTA and 1% of benzalkonium bromide dimethyl benzyl ammonium bromide, dissolving in 60% purified water to prepare an aqueous antibacterial solution, diluting the aqueous antibacterial solution by 10 times, and then putting into a dipping tank, dipping the polypropylene anti-sticking non-woven fabric substrate obtained in the step (1) into the dipping tank, wherein the polypropylene anti-sticking non-woven fabric substrate is dipped with the aqueous antibacterial solution, and the running speed of the non-woven fabric is 5 m/min;
(3) extruding the polypropylene anti-sticking non-woven fabric base material which is soaked with the water-based antibacterial solution and obtained in the step (2) by an upper roller and a lower roller, conveying the extruded base material to a drying tunnel by a conveying belt, wherein the traveling speed of the non-woven fabric is 5m/min, drying the non-woven fabric in the drying tunnel by high temperature and hot air, wherein the drying tunnel consists of nine drying ovens, the length of each drying oven is 2 meters, the temperature in the drying tunnel is 80 ℃, cooling the non-woven fabric to room temperature, and then rolling the non-woven fabric to obtain the hydrophilic antibacterial non-woven fabric.
Example 3:
the hydrophilic antibacterial non-woven fabric comprises a polypropylene anti-sticking non-woven fabric substrate and a water-based antibacterial layer, wherein the water-based antibacterial layer comprises the following raw materials in parts by weight: 2% of sodium alginate, 3% of chitosan, 4% of biological dye-methylene blue, 2% of phthalocyanine photosensitizer, 1.2% of n-butyl alcohol, 2% of sodium caprylate, 20% of DMSO, 0.3% of metal ion complexing agent EDTA, 4% of benzalkonium bromide dimethyl benzyl hydrocarbon ammonium and 70% of purified water.
As shown in fig. 1, a method for preparing a hydrophilic antibacterial non-woven fabric includes the following steps:
(1) the polypropylene anti-sticking non-woven fabric base material is placed on a roller, the running speed of the non-woven fabric is 5m/min, corona treatment is carried out on the surface of the polypropylene anti-sticking non-woven fabric base material through a corona machine, an oblique discharge blade is adopted for corona treatment, the inclination angle between the discharge blade and the surface of the polypropylene anti-sticking non-woven fabric base material is 40 degrees, the height is 7mm, the voltage is 10000V, the pulse frequency is 18KHz, the surface roughness of the polypropylene anti-sticking non-woven fabric base material is 1.2 mu m, and the surface tension is 40 dyn/cm;
(2) fully reacting 2% of sodium alginate, 3% of chitosan, 4% of biological dye-methylene blue, 2% of phthalocyanine photosensitizer, 1.2% of n-butyl alcohol, 2% of sodium caprylate, 20% of DMSO, 0.3% of metal ion complexing agent EDTA and 4% of benzalkonium bromide dimethyl benzyl hydrocarbon ammonium bromide, dissolving in 70% of purified water to prepare an aqueous antibacterial solution, diluting the aqueous antibacterial solution by 10 times, and then putting into a dipping tank, dipping the polypropylene anti-sticking non-woven fabric substrate obtained in the step (1) into the dipping tank, wherein the polypropylene anti-sticking non-woven fabric substrate is dipped with the aqueous antibacterial solution, and the running speed of the non-woven fabric is 5 m/min;
(3) extruding the polypropylene anti-sticking non-woven fabric base material which is soaked with the water-based antibacterial solution and obtained in the step (2) by an upper roller and a lower roller, conveying the extruded base material to a drying tunnel by a conveyor belt, wherein the running speed of the non-woven fabric is 5m/min, drying the non-woven fabric in the drying tunnel by high temperature and hot air, wherein the drying tunnel consists of nine drying ovens, the length of each drying oven is 2 meters, the temperature in the drying tunnel is 85 ℃, cooling the non-woven fabric to room temperature, and then rolling the non-woven fabric to obtain the hydrophilic antibacterial non-woven fabric.
Example 4:
the hydrophilic antibacterial non-woven fabric comprises a polypropylene anti-sticking non-woven fabric substrate and a water-based antibacterial layer, wherein the water-based antibacterial layer comprises the following raw materials in parts by weight: 5% of sodium alginate, 5% of chitosan, 8% of biological dye-methylene blue, 4% of phthalocyanine photosensitizer, 1.4% of n-butanol, 4% of sodium caprylate, 28% of DMSO, 0.4% of metal ion complexing agent EDTA, 12% of benzalkonium bromide dimethylbenzyl hydrocarbon ammonium bromide and 80% of purified water.
As shown in fig. 1, a method for preparing a hydrophilic antibacterial non-woven fabric includes the following steps:
(1) the polypropylene anti-sticking non-woven fabric base material is placed on a roller, the running speed of the non-woven fabric is 5m/min, corona treatment is carried out on the surface of the polypropylene anti-sticking non-woven fabric base material through a corona machine, an oblique discharge blade is adopted for the corona treatment, the inclination angle between the discharge blade and the surface of the polypropylene anti-sticking non-woven fabric base material is 45 degrees, the height is 8mm, the voltage is 10500V, the pulse frequency is 20KHz, the surface roughness of the polypropylene anti-sticking non-woven fabric base material is 1.4 mu m, and the surface tension is 42 dyn/cm;
(2) fully reacting 5% of sodium alginate, 5% of chitosan, 8% of biological dye-methylene blue, 4% of phthalocyanine photosensitizer, 1.4% of n-butyl alcohol, 4% of sodium caprylate, 28% of DMSO, 0.4% of metal ion complexing agent EDTA and 12% of benzalkonium bromide dimethyl benzyl hydrocarbon ammonium bromide, dissolving in 80% of purified water to prepare an aqueous antibacterial solution, diluting the aqueous antibacterial solution by 10 times, and then putting into a dipping tank, dipping the polypropylene anti-sticking non-woven fabric substrate obtained in the step (1) into the dipping tank, wherein the polypropylene anti-sticking non-woven fabric substrate is dipped with the aqueous antibacterial solution, and the running speed of the non-woven fabric is 5 m/min;
(3) extruding the polypropylene anti-sticking non-woven fabric base material which is soaked with the water-based antibacterial solution and obtained in the step (2) by an upper roller and a lower roller, conveying the extruded base material to a drying tunnel by a conveying belt, wherein the traveling speed of the non-woven fabric is 5m/min, drying the non-woven fabric in the drying tunnel by high temperature and hot air, wherein the drying tunnel consists of nine drying ovens, the length of each drying oven is 2 meters, the temperature in the drying tunnel is 90 ℃, cooling the non-woven fabric to room temperature, and then rolling the non-woven fabric to obtain the hydrophilic antibacterial non-woven fabric.
Example 5:
the hydrophilic antibacterial non-woven fabric comprises a polypropylene anti-sticking non-woven fabric substrate and a water-based antibacterial layer, wherein the water-based antibacterial layer comprises the following raw materials in parts by weight: 5% of sodium alginate, 5% of chitosan, 10% of biological dye-methylene blue, 5% of phthalocyanine photosensitizer, 1.5% of n-butyl alcohol, 5% of sodium caprylate, 30% of DMSO, 0.5% of metal ion complexing agent EDTA, 15% of benzalkonium bromide dimethyl benzyl hydrocarbon ammonium and 90% of purified water.
As shown in fig. 1, a method for preparing a hydrophilic antibacterial non-woven fabric includes the following steps:
(1) the polypropylene anti-sticking non-woven fabric base material is placed on a roller, the running speed of the non-woven fabric is 5m/min, corona treatment is carried out on the surface of the polypropylene anti-sticking non-woven fabric base material through a corona machine, an oblique discharge blade is adopted for corona treatment, the inclination angle between the discharge blade and the surface of the polypropylene anti-sticking non-woven fabric base material is 50 degrees, the height is 9mm, the voltage is 11000V, the pulse frequency is 25KHz, the surface roughness of the polypropylene anti-sticking non-woven fabric base material reaches 1.6 mu m, and the surface tension reaches 45 dyn/cm;
(2) fully reacting 5% of sodium alginate, 5% of chitosan, 10% of biological dye-methylene blue, 5% of phthalocyanine photosensitizer, 1.5% of n-butyl alcohol, 5% of sodium caprylate, 30% of DMSO, 0.5% of metal ion complexing agent EDTA and 15% of benzalkonium bromide dimethyl benzyl hydrocarbon ammonium bromide, dissolving the obtained product in 90% purified water to obtain an aqueous antibacterial solution, diluting the aqueous antibacterial solution by 10 times, and then putting the obtained product in a dipping tank, dipping the polypropylene anti-sticking non-woven fabric substrate obtained in the step (1) in the dipping tank to ensure that the polypropylene anti-sticking non-woven fabric substrate is dipped with the aqueous antibacterial solution, wherein the running speed of the non-woven fabric is 5 m/min;
(3) extruding the polypropylene anti-sticking non-woven fabric base material which is soaked with the water-based antibacterial solution and obtained in the step (2) by an upper roller and a lower roller, conveying the extruded base material to a drying tunnel by a conveyor belt, wherein the running speed of the non-woven fabric is 5m/min, drying the non-woven fabric in the drying tunnel by high temperature and hot air, wherein the drying tunnel consists of nine drying ovens, the length of each drying oven is 2 meters, the temperature in the drying tunnel is 95 ℃, cooling the non-woven fabric to room temperature, and then rolling the non-woven fabric to obtain the hydrophilic antibacterial non-woven fabric.
Example of effects:
(1) experimental samples: the hydrophilic antibacterial nonwoven fabric prepared in example 3 of the present invention and the control sample 1 prepared by treating with a hydrophilic agent.
(2) The experimental method comprises the following steps: according to ISO 20743 and 2013, antibacterial property test method of textiles: absorption method "to test the antibacterial performance of the experimental samples, the test results are shown in tables 1 and 2.
TABLE 1 antibacterial Properties of the experimental samples against Staphylococcus aureus
TABLE 2 antibacterial Properties of the experimental samples against Klebsiella pneumoniae
Note: the antibacterial performance efficacy is as follows: when the antibacterial activity value is more than or equal to 2 and A is less than 3, the sample can be evaluated as having antibacterial efficacy; when the antibacterial activity value A is more than or equal to 3, the sample can be evaluated to have strong antibacterial effect.
(3) The experimental results are as follows:
as can be seen from table 1, the antibacterial activity value of the hydrophilic antibacterial nonwoven fabric prepared in example 3 of the present invention is 5.3, which is greater than 3, indicating that the hydrophilic antibacterial nonwoven fabric prepared in example 3 of the present invention has strong antibacterial effect against staphylococcus aureus, while the antibacterial activity value of the control sample 1 prepared by treating with the hydrophilic agent is 2, indicating that the control sample 1 prepared by treating with the hydrophilic agent has antibacterial effect against staphylococcus aureus, but the effect is not particularly strong.
As can be seen from table 2, the antibacterial activity value of the hydrophilic antibacterial nonwoven fabric prepared in example 3 of the present invention is 5.47, which is greater than 3, indicating that the hydrophilic antibacterial nonwoven fabric prepared in example 3 of the present invention has a strong antibacterial effect against klebsiella pneumoniae, while the antibacterial activity value of the control sample 1 prepared by treating with the hydrophilic agent is 0.11, which is less than 2, indicating that the control sample 1 prepared by treating with the hydrophilic agent has no antibacterial effect against klebsiella pneumoniae.
The polypropylene anti-sticking non-woven fabric is treated by a physical method, so that the water absorption performance of the polypropylene anti-sticking non-woven fabric can be effectively improved on the premise of not introducing other chemical components, the original water-repellent polypropylene anti-sticking non-woven fabric can absorb water instantly, and the polypropylene anti-sticking non-woven fabric has good water absorption uniformity, water retention rate, moisture permeability and the like.
The corona mode for processing the film material is introduced into the surface treatment of the polypropylene anti-sticking non-woven fabric, and the polypropylene anti-sticking non-woven fabric has good hydrophilic performance through the corona treatment, is simple and quick in processing process and low in cost, and has small influence on other performances of the polypropylene anti-sticking non-woven fabric.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (4)
1. A preparation method of hydrophilic antibacterial non-woven fabric is characterized by comprising the following steps:
(1) placing a polypropylene anti-sticking non-woven fabric substrate on a roller, and carrying out corona treatment on the surface of the polypropylene anti-sticking non-woven fabric substrate by using a corona machine, wherein the corona treatment adopts an obliquely arranged discharge blade, the inclination angle between the discharge blade and the surface of the polypropylene anti-sticking non-woven fabric substrate is 20-50 degrees, the height is 5-9mm, the voltage is 9000-11000V, and the pulse frequency is 10-25 KHz;
(2) fully reacting 1-4% of sodium alginate, 3-4% of chitosan, 2-5% of biological dye-methylene blue, 0.5-4% of phthalocyanine photosensitizer, 0.5-1% of n-butyl alcohol, 1-4% of sodium caprylate, 22-28% of DMSO, 0.2-0.4% of metal ion complexing agent EDTA and 1-10% of benzalkonium bromide and dimethyl benzyl ammonium bromide, dissolving the obtained product in 60-80% of purified water to prepare an aqueous antibacterial solution, diluting the aqueous antibacterial solution by 10 times, filling the obtained product in the step (1) into a dipping tank, and dipping the polypropylene anti-sticking non-woven fabric substrate into the aqueous antibacterial solution;
(3) and (3) extruding the polypropylene anti-sticking non-woven fabric base material which is soaked in the water-based antibacterial solution and obtained in the step (2) by an upper roller and a lower roller, conveying the extruded polypropylene anti-sticking non-woven fabric base material to a drying tunnel by a conveying belt, drying the extruded polypropylene anti-sticking non-woven fabric base material in the drying tunnel by high temperature and hot air, cooling the dried polypropylene anti-sticking non-woven fabric base material to room temperature, and rolling the dried polypropylene anti.
2. The method for preparing a hydrophilic antibacterial nonwoven fabric according to claim 1, characterized in that: in the step (1), the surface roughness of the polypropylene anti-sticking non-woven fabric substrate reaches 0.8-1.6 mu m, and the surface tension reaches 35-45 dyn/cm.
3. The method for preparing a hydrophilic antibacterial nonwoven fabric according to claim 1, characterized in that: the drying tunnel in the step (3) consists of nine drying ovens, the length of each drying oven is 2 meters, and the temperature in the drying tunnel is 75-95 ℃.
4. The method of preparing a hydrophilic antibacterial nonwoven fabric according to any one of claims 1 to 3, characterized in that: the running speed of the non-woven fabric in the step (1), the step (2) and the step (3) is 5 m/min.
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| CN114808431B (en) * | 2021-01-28 | 2023-09-12 | 中科鼎晟科技有限公司 | Antibacterial non-woven fabric and preparation method and application thereof |
| CN113122954B (en) * | 2021-04-28 | 2022-12-16 | 江苏江山红化纤有限责任公司 | Sports fabric based on graphene polyamide 6 fibers and preparation method thereof |
| CN114177341B (en) * | 2021-12-17 | 2023-01-31 | 常州美杰医疗用品有限公司 | Preparation method of antibacterial medical foam dressing |
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