CN112012009B - Super-hydrophobic sterilization material and preparation method thereof - Google Patents
Super-hydrophobic sterilization material and preparation method thereof Download PDFInfo
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/83—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0028—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions provided with antibacterial or antifungal means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/054—Nanosized particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/42—Coating with noble metals
- C23C18/44—Coating with noble metals using reducing agents
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The invention discloses a super-hydrophobic sterilization material and a preparation method thereof, wherein the preparation process comprises the following steps: mixing AgNO 3 Adding into ethanol water solution, stirring to obtain mixed solution I; dropwise adding an ammonia solution into the mixed solution I until the bottom precipitate of the mixed solution I completely disappears to obtain a mixed solution II; adding a glucose solution and a clean matrix material into the mixed solution II, simultaneously carrying out ultrasonic treatment, then taking out the matrix material, washing with water, immersing the matrix material into the solution again, repeating the operation for 3-4 times, and finally drying the matrix material; and (3) carrying out UV irradiation on the dried matrix material to obtain the super-hydrophobic sterilization material. The preparation method of the sterilization material is simple, convenient to operate and excellent in sterilization performance.
Description
Technical Field
The invention relates to the technical field of sterilization materials, in particular to a super-hydrophobic sterilization material and a preparation method thereof.
Background
With the outbreak of new coronavirus epidemics, the public has paid unprecedented attention to antibacterial, antiviral filter materials. The current anti-virus mask mainly realizes the protection of a human body based on static electricity and filtration generated by spray-melting matrix materials, the non-woven fabric mask cannot kill the activity of bacteria and viruses, and only isolates the bacteria and the viruses through physical filtration, so that certain bacteria and viruses can be gathered by the mask material used for a certain time, the potential secondary infection condition exists, the mask has short service time and needs to be replaced in time, and the waste of resources is also caused by the treatment of the waste mask.
The existing sterilization mask generally has two types, one type is that the sterilization lamination is arranged in the interlayer of the mask, and the mask of the type is heavy and has poor air permeability; the other type is directly made of a non-woven fabric material with an antibacterial coating, but the mask has higher requirements on the non-woven fabric, the operation process for preparing the non-woven fabric material with the antibacterial coating in the prior art is complex and is difficult to operate, and the antibacterial coating is generally a hydrophilic material, so that the surface of the originally hydrophobic mask is easily wetted by water and cannot resist the wetting of splashed blood and oral foam.
With the development of economy, the living standard of people is gradually improved, and the health consciousness of people is increasingly enhanced; at present, the mainstream of the air purifier product is mainly air haze removal and indoor aldehyde removal, and the arrangement of special sterilization materials is not large; the existing sterilization purifier mainly uses a filter screen to filter and intercept bacteria, and cannot kill the intercepted bacteria, so that the development of a filter screen material capable of killing bacteria is very important, and the establishment of a multifunctional sterilization material on the surfaces of porous non-woven fabrics and filter screens has great significance for improving the anti-virus and bacteria capabilities of filter materials.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a super-hydrophobic sterilization material and a preparation method thereof, and the material can effectively solve the problems of complex preparation method, difficult operation and poor sterilization effect of the existing sterilization material.
In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problems is as follows:
a preparation method of a super-hydrophobic sterilization material comprises the following steps:
(1) Mixing AgNO 3 Adding into ethanol water solution, stirring to obtain mixed solution I;
(2) Dropwise adding an ammonia solution into the mixed solution I obtained in the step (1) until the bottom precipitate of the mixed solution I completely disappears to obtain a mixed solution II;
(3) Adding a glucose solution and a cleaning matrix material into the mixed solution II obtained in the step (2) at the same time, carrying out ultrasonic treatment, then taking out the matrix material, washing with water, immersing the matrix material into the solution again for ultrasonic treatment, repeating the operation for 3-4 times, and finally drying the matrix material;
(4) And (4) carrying out UV irradiation on the base material dried in the step (3) to obtain the material.
The beneficial effect that above-mentioned scheme produced does: mixing AgNO 3 Adding into ethanol water solution to form mixed solution, adding ammonia solution, agNO 3 The method comprises the steps of reacting the silver hydroxide precipitate with ammonia solution to form silver hydroxide precipitate, continuously reacting the silver hydroxide precipitate with the ammonia solution to form silver diammine hydroxide, adding glucose solution serving as a reducing agent into the solution to reduce silver ions into nano silver floating in the solution, simultaneously adding a base material cleaned by ethanol and pure water into the solution to enable the nano silver to be immediately deposited on the base material, performing ultrasonic treatment to accelerate the nano silver deposition speed and the deposition effect and improve the stability of the nano silver deposition, washing the nano silver which is not loaded or loaded unstably and other impurities with clear water after each deposition is finished, uniformly loading the nano silver on the surface of the base material through multiple depositions, and finally drying the base material to obtain the base material with the sterilization function, wherein the nano silver on the surface of the base material can effectively kill bacteria and improve the sterilization effect. Carrying out UV irradiation on the matrix material loaded with the nano-silver to ensure that organic matters such as glucose and the like remained on the surface of the matrix material are subjected to chemistry in the ultraviolet irradiation processThe bond is broken to generate hydrophobic organic fragments, and nonpolar bonds such as C-H, C-C are rearranged, so that a hydrophobic surface is formed on the surface of the matrix material, droplets carrying bacteria are prevented from entering the interior of the matrix material, and the antibacterial performance is further improved.
Further, a nonwoven fabric, a cotton fabric, a fiber woven fabric or a metal mesh.
Further, when the base material is a metal mesh, the pore size of the metal mesh is less than 500 μm.
Further, the volume concentration of the ethanol in the ethanol water solution in the step (1) is 8-12%.
Further, the volume concentration of ethanol in the ethanol water solution in the step (1) is 9%.
Further, agNO in step (1) 3 The mass concentration in the ethanol water solution is 1.5-3%.
Further, agNO in step (1) 3 The mass concentration in the ethanol aqueous solution was 2%.
The beneficial effect that above-mentioned scheme produced does: adding a certain amount of AgNO 3 Adding the ethanol aqueous solution with the volume concentration to form a mixed solution, agNO 3 The concentration is too low, so that the concentration of the nano silver is reduced, the nano silver loading on the base material is less, and the sterilization effect is influenced.
Further, the mass concentration of the ammonia solution in the step (2) is 2-3%.
Further, the molar ratio of silver ions to glucose in the solution of step (3) is 0.25-0.30.
The beneficial effect that above-mentioned scheme produced does: the silver ions are mixed with glucose according to the proportion of 0.28, the glucose can fully reduce the silver ions into nano silver, and meanwhile, the surplus of glucose is reduced, so that the waste is avoided.
Further, in the step (3), ultrasonic treatment is carried out for 8-15min at the temperature of 75-85 ℃.
Further, in the step (3), the ultrasonic treatment is carried out at 80 ℃ for 10min.
The beneficial effect that above-mentioned scheme produced does: under the temperature condition, the loading stability and the loading speed of the nano silver on the base material can be improved, and further the sterilization performance of the base material is improved.
Further, the sonication was repeated 3 times in step (3).
The beneficial effect that above-mentioned scheme produced does: the soaking and ultrasonic treatment is repeated for 3 times, the ultrasonic power is 100W, and the frequency is 45kHz, so that sufficient nano silver is uniformly loaded on the surface of the base material, and the sterilization effect of the base material is fully improved.
Further, the drying mode in the step (3) is vacuum drying at room temperature.
The beneficial effect that above-mentioned scheme produced does: vacuum drying can accelerate drying speed, shorten drying time, improve the treatment efficiency of the base material, and simultaneously can avoid oxygen, dust and the like in the air from reacting with substances attached to the surface of the base material to influence the sterilization effect.
Further, in the step (4), the UV irradiation intensity is 400-1600W, and the irradiation time is 8-12min.
The beneficial effects produced by the invention are as follows:
the surface of the matrix material prepared by the method has a super-hydrophobic characteristic, so that body fluid (blood), spray and the like with microorganisms such as viruses and bacteria can be effectively prevented from entering the matrix material, and the surface of the matrix material is uniformly loaded with nano silver, so that the matrix material has a sterilization effect, can kill microorganisms such as bacteria and viruses adhered to the surface of the matrix material, and prevents the propagation of the bacteria and viruses on the surface of the matrix material to cause secondary pollution. Therefore, the super-hydrophobic and bactericidal functions synergistically enhance the prevention, control and interception capabilities of the filter material on bacteria and viruses.
The preparation process of the super-hydrophobic matrix material adopts a one-step synthesis method, so that the nano silver is directly synthesized on the matrix material, and the preparation method has the advantages of simple preparation process, convenience in operation and low preparation cost, no pollutant is generated in the preparation process, the preparation method is green and environment-friendly, and no fluorine-containing treatment agent is required to be additionally used.
Drawings
FIG. 1 is a graph of hydrophobic angle as a function of irradiation time.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
Example 1
The preparation method of the super-hydrophobic sterilization material comprises the following steps:
(1) Mixing AgNO 3 Adding into 8 vol% ethanol water solution, agNO 3 The mass concentration of the mixed solution in the ethanol water solution is 1.5 percent, and the mixed solution I is obtained after uniform stirring;
(2) Dropwise adding an ammonia solution with the mass concentration of 2% into the mixed solution I in the step (1) until the bottom precipitate of the mixed solution I completely disappears to obtain a mixed solution II;
(3) Adding a glucose solution and a clean non-woven fabric into the mixed solution II obtained in the step (2), carrying out ultrasonic treatment for 8min at 75 ℃, wherein the ultrasonic power is 100W, the frequency is 45kHz, then taking out the non-woven fabric, washing with water, immersing the non-woven fabric into the solution again, repeating the operation for 3 times, and finally drying the non-woven fabric in vacuum at room temperature, wherein the molar ratio of silver ions to glucose in the mixed solution is 0.25;
(4) And (4) carrying out UV irradiation on the dried non-woven fabric in the step (3) for 12min by using a high-pressure mercury lamp under the condition of 1400W to obtain the non-woven fabric.
Example 2
The preparation method of the super-hydrophobic sterilization material comprises the following steps:
(1) Mixing AgNO 3 Adding into 12 vol% ethanol water solution, agNO 3 The mass concentration of the mixed solution in the ethanol water solution is 3 percent, and the mixed solution I is obtained after uniform stirring;
(2) Dropwise adding an ammonia solution with the mass concentration of 3% into the mixed solution I in the step (1) until the bottom precipitate of the mixed solution I completely disappears to obtain a mixed solution II;
(3) Adding a glucose solution and clean cotton cloth into the mixed solution II obtained in the step (2), carrying out ultrasonic treatment for 15min at the temperature of 85 ℃, wherein the ultrasonic power is 100W, the frequency is 45kHz, then taking out the cotton cloth, washing with water, immersing the cotton cloth into the solution again, repeating the operation for 4 times, and finally drying the cotton cloth in vacuum at room temperature, wherein the molar ratio of silver ions to glucose in the mixed solution is 0.28;
(4) And (4) carrying out UV irradiation on the dried cotton cloth in the step (3) for 8min by using a high-pressure mercury lamp under the condition of 1600W, thus obtaining the cotton cloth.
Example 3
The preparation method of the super-hydrophobic sterilization material comprises the following steps:
(1) Mixing AgNO 3 Adding into 10 vol% ethanol water solution, agNO 3 The mass concentration of the mixed solution in the ethanol water solution is 2 percent, and the mixed solution I is obtained after uniform stirring;
(2) Dropwise adding an ammonia solution with the mass concentration of 2.5% into the mixed solution I in the step (1) until the bottom precipitate of the mixed solution I completely disappears to obtain a mixed solution II;
(3) Adding a glucose solution and a clean non-woven fabric into the mixed solution II obtained in the step (2), carrying out ultrasonic treatment for 10min at the temperature of 80 ℃, wherein the ultrasonic power is 100W, the frequency is 45kHz, then taking out the non-woven fabric, washing with water, immersing the non-woven fabric into the solution again, repeating the operation for 3 times, and finally drying the non-woven fabric in vacuum at room temperature, wherein the molar ratio of silver ions to glucose in the mixed solution is 0.28;
(4) And (4) carrying out UV irradiation on the dried non-woven fabric in the step (3) for 10min by using an ultraviolet LED lamp under the condition of 800W, thus obtaining the non-woven fabric.
Example 4
The preparation method of the super-hydrophobic sterilization material comprises the following steps:
(1) Mixing AgNO 3 Adding into 10 vol% ethanol water solution, agNO 3 The mass concentration of the mixed solution in the ethanol water solution is 2.5 percent, and the mixed solution I is obtained after uniform stirring;
(2) Dropwise adding an ammonia solution with the mass concentration of 3% into the mixed solution I in the step (1) until the bottom precipitate of the mixed solution I completely disappears to obtain a mixed solution II;
(3) Adding a glucose solution and a clean metal net into the mixed solution II obtained in the step (2), carrying out ultrasonic treatment for 12min at 75 ℃, wherein the ultrasonic power is 100W, the frequency is 45kHz, then taking out the metal net, washing with water, immersing the metal net into the solution again, repeating the operation for 4 times, and finally drying the metal net in vacuum at room temperature, wherein the molar ratio of silver ions to glucose in the mixed solution is 0.28;
(4) And (4) carrying out UV irradiation on the dried metal mesh in the step (3) for 9min by using a high-pressure mercury lamp under the condition of 1500W to obtain the metal mesh.
Comparative example 1
The preparation method of the super-hydrophobic sterilization material comprises the following steps:
(1) Mixing AgNO 3 Adding into 10 vol% ethanol water solution, agNO 3 The mass concentration of the mixed solution in the ethanol water solution is 1 percent, and the mixed solution I is obtained after uniform stirring;
(2) Dropwise adding an ammonia solution with the mass concentration of 1.5% into the mixed solution I in the step (1) until the bottom precipitate of the mixed solution I completely disappears to obtain a mixed solution II;
(3) Adding a glucose solution and a clean non-woven fabric into the mixed solution II obtained in the step (2), carrying out ultrasonic treatment for 10min at the temperature of 80 ℃, wherein the ultrasonic power is 100W, the frequency is 45kHz, then taking out the non-woven fabric, washing with water, immersing the non-woven fabric into the solution again, repeating the operation for 3 times, and finally drying the non-woven fabric in vacuum at room temperature, wherein the molar ratio of silver ions to glucose in the mixed solution is 0.28;
(4) And (4) carrying out UV irradiation on the dried non-woven fabric in the step (3) for 5min by using an ultraviolet LED lamp under the condition of 800W, thus obtaining the non-woven fabric.
Test examples
1. The antibacterial experiments were performed on the substrate materials prepared in examples 1 to 4 and comparative example 1, respectively, and the specific antibacterial operations were as follows: cutting the prepared antibacterial base material into square with side length of 2x2cm, and transferring 100 μ L of bacteria stock solution (1 x 10) 6 ～5×10 6 cfu/mL) was dropped on the surface of the substrate sample, a 2X2cm PET film was laid under the substrate sample to prevent leakage of the bacterial solution, after contact for a certain period of time (1 hour, 2 hours), the substrate and the PET film were washed with 10mL of previously sterilized eluent (0.9% NaCl solution), sufficiently shaken, and then the bacterial solution was diluted 10 timesAnd (3) diluting, transferring 100uL of each gradient level bacterial liquid into a sterilized solid nutrient agar culture medium, uniformly coating by using a glass coater, putting into a biochemical constant-temperature incubator at 37 ℃ for culturing for 20h, counting bacterial colonies, and calculating the antibacterial rate. When the contact time of the bacteria and the modified matrix material carrying the nano silver is 1h and 2h respectively, the specific antibacterial effect is shown in table 1.
Table 1: antibacterial results table
From the above table, it can be seen that, in the antibacterial property experiment of the base material prepared by the method in examples 1-4 of the present application, when the contact time of the bacteria and the base material is 2 hours, the antibacterial properties of the base material in examples 1, 2 and 4 to escherichia coli and staphylococcus aureus are all equal to or greater than 99.9%, the eluent contains only a very small amount of bacteria, and the eluent in example 3 contains no bacteria at all, which proves that the antibacterial properties of the base material prepared by the method in the present invention are all better than the antibacterial effect in comparative example 1.
2. The hydrophobic angle of the matrix material was measured before and after UV irradiation for the matrix materials of examples 1 to 4 and comparative example 1, respectively, and the specific measurement results are shown in table 2.
Table 2: hydrophobic angle measuring meter
| Hydrophobic Angle before UV irradiation | Hydrophobic Angle after UV irradiation | |
| Example 1 | 43.8 | 130° |
| Example 2 | 43.8 | 132° |
| Example 3 | 43.5 | 145° |
| Example 4 | 43.8 | 152° |
| Comparative example 1 | 43.8 | 115° |
From the above table, it is known that before and after the substrate materials in examples 1 to 4 are subjected to UV irradiation, the hydrophobic angle thereof is greatly changed, and the hydrophobic angle of the substrate materials after irradiation is 130 ° or more, which proves that the hydrophobicity of the substrate materials after UV irradiation is significantly enhanced; the irradiation time in comparative example 1 was short, and the hydrophobic angle increased after irradiation, but the amplification was lower than in examples 1 to 4, demonstrating that the UV irradiation time has a large influence on the hydrophobic property of the base material.
3. Using the substrate in example 3 as a sample, the change of the hydrophobic angle of the substrate and the change of the XPS on the surface of the substrate with the increase of the irradiation time were measured, and the results are shown in table 3 and fig. 1.
Table 3: XPS Change Table
| 0min | 5min | 60min | |
| Ag 3d | 24.92 | 16.85 | 7.56 |
| C 1s | 48.82 | 67.88 | 74.92 |
| O 1s | 23.97 | 13.65 | 7.56 |
As can be seen from Table 3, as the irradiation time was prolonged, the Ag ratio gradually decreased and the C ratio gradually increased, demonstrating that organic fragments on the surface of the base material migrated to the Ag surface.
As can be known from fig. 1, as the irradiation time is prolonged, the hydrophobic angle of the surface of the base material gradually increases and changes quite obviously, when the irradiation time exceeds 5min, the change amplitude of the hydrophobic angle of the surface of the base material decreases, and when the irradiation time reaches 15min, the hydrophobic angle of the surface of the base material is substantially saturated.
Claims (4)
1. The preparation method of the super-hydrophobic sterilization material is characterized by comprising the following steps:
(1) AgNO is added 3 Adding ethanol water solutionMixing to obtain mixed solution I, wherein the volume concentration of ethanol in the ethanol aqueous solution is 8-12%, and AgNO 3 The mass concentration of the extract in an ethanol water solution is 1.5-3%;
(2) Dropwise adding an ammonia solution into the mixed solution I in the step (1) until the precipitate at the bottom of the mixed solution I completely disappears to obtain a mixed solution II;
(3) Adding a glucose solution and a cleaning matrix material into the mixed solution II obtained in the step (2) at the same time, wherein the molar ratio of silver ions to glucose in the solution is 0.25-0.30, performing ultrasonic treatment at 75-85 ℃ for 8-15min, then taking out the matrix material, washing with water, immersing the matrix material into the solution again for ultrasonic treatment, repeating the operation for 3-4 times, and finally drying the matrix material; the matrix material is fiber textile;
(4) And (4) carrying out UV irradiation on the base material dried in the step (3), wherein the UV irradiation intensity is 400-1600W, and the irradiation time is 8-12min, so as to obtain the material.
2. The preparation method of the super-hydrophobic sterilization material is characterized by comprising the following steps:
(1) Mixing AgNO 3 Adding into ethanol water solution, stirring to obtain mixed solution I, wherein the volume concentration of ethanol in the ethanol water solution is 8-12%, agNO 3 The mass concentration in the ethanol water solution is 1.5-3%;
(2) Dropwise adding an ammonia solution into the mixed solution I obtained in the step (1) until the bottom precipitate of the mixed solution I completely disappears to obtain a mixed solution II;
(3) Adding a glucose solution and a cleaning matrix material into the mixed solution II obtained in the step (2) at the same time, wherein the molar ratio of silver ions to glucose in the solution is 0.25-0.30, performing ultrasonic treatment at 75-85 ℃ for 8-15min, then taking out the matrix material, washing with water, immersing the matrix material into the solution again for ultrasonic treatment, repeating the operation for 3-4 times, and finally drying the matrix material; the base material is non-woven fabric, cotton cloth or metal net;
(4) And (4) carrying out UV irradiation on the base material dried in the step (3), wherein the UV irradiation intensity is 400-1600W, and the irradiation time is 8-12min, so as to obtain the material.
3. The method for preparing the superhydrophobic bactericidal material according to claim 1 or 2, wherein the mass concentration of the ammonia solution in the step (2) is 2-3%.
4. The super-hydrophobic sterilization material obtained by the preparation method of any one of claims 1 to 3.
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| CN104083800B (en) * | 2014-04-30 | 2016-05-04 | 佛山市优特医疗科技有限公司 | Containing silver thiosulfate complex or silver-colored amine complex can moisture absorption containing silverware and preparation method thereof |
| CN104475309B (en) * | 2014-11-17 | 2016-06-29 | 中国科学院物理研究所 | The preparation method of a kind of super hydrophobic functional material, super hydrophobic functional material and application |
| CN106922732B (en) * | 2017-03-31 | 2020-05-29 | 中海油天津化工研究设计院有限公司 | Preparation method and application of sterilization material taking loofah sponge as matrix |
| CN108659586B (en) * | 2018-05-26 | 2020-08-04 | 湖南凯斯利新材料有限公司 | Long-acting self-cleaning water-based inorganic nano ceramic coating and preparation method thereof |
| CN108755111B (en) * | 2018-06-20 | 2019-06-21 | 西安科技大学 | A method of deposition silver nano-grain processability stablizes antibacterial superhydrophobic fabric |
| CN111235875B (en) * | 2019-10-14 | 2021-12-28 | 四川大学 | Silver-plated special-shaped polyvinyl alcohol fiber, and preparation method and application thereof |
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