CN113209722A - Copper and silver-containing antibacterial and antiviral filter screen and preparation method thereof - Google Patents
Copper and silver-containing antibacterial and antiviral filter screen and preparation method thereof Download PDFInfo
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- CN113209722A CN113209722A CN202110337918.5A CN202110337918A CN113209722A CN 113209722 A CN113209722 A CN 113209722A CN 202110337918 A CN202110337918 A CN 202110337918A CN 113209722 A CN113209722 A CN 113209722A
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- filter screen
- copper
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- antiviral
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
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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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- 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
Abstract
The invention discloses an antibacterial and antiviral filter screen, particularly relates to a copper and silver-containing antibacterial and antiviral filter screen and a preparation method thereof, and belongs to the technical field of medical instruments. The surface of the antibacterial and antiviral filter screen contains simple substance copper and silver obtained by physical vapor deposition. The silver and the copper are cooperatively matched to cooperatively play the bacteriostatic and antiviral roles, so that the killing efficiency of bacteria and viruses is improved, and the silver-copper antibacterial agent has the characteristics of high efficiency and durability. The filter screen provided by the invention is applied to an air filter, so that the sterilization effect of the filter can be improved, bacteria and viruses in the environment can be efficiently adsorbed, and the antibacterial and antiviral effects are efficient and lasting; the filter screen is applied to special local environment, can quickly adsorb and kill bacteria and viruses, and creates a clean local space.
Description
Technical Field
The invention relates to the technical field of crossing materials, chemical engineering and life science. More particularly, relates to a copper and silver-containing antibacterial and antiviral filter screen and a preparation method thereof.
Background
In recent years, many viral infectious diseases, such as SARS, avian influenza, influenza a H1N1, and novel coronavirus pneumonia, are frequently outbreaks of respiratory infectious diseases. The main transmission routes of respiratory infectious diseases are droplet transmission and contact transmission, which pose serious threats to public health and social stability.
Common masks and air purifiers also have certain air purification effect, harmful substances such as pathogenic organisms, dust particles, smoke particles and the like in the air are removed, and the products usually realize the separation of particles such as pathogenic microorganisms and the like by means of fiber electrostatic adsorption and fiber arrangement micro gaps of fiber materials with porous structures. However, both bacteria and viruses can survive on the surface of the fibrous material for a long period of time. For example, the coronavirus can survive for 2-3 days on the surface of the high polymer plastic, so the coronavirus on the surface of the fiber material can be desorbed again and diffused into the environment, and becomes a biological risk for manufacturing a pollution source again. Therefore, the prepared organic-inorganic fiber filter screen with the antibacterial and antiviral functions can effectively kill pathogenic bacteria and viruses (particularly coronavirus) in the environment, provide a safer and cleaner local environment and guarantee the life safety of people.
Current studies have shown that the new coronavirus (SARS-COV-2) has the ability to survive for long periods of time on solid surfaces, for example, cardboard surfaces for up to 24 hours and plastic and stainless steel surfaces for up to 2-3 days. However, new coronaviruses are viable on metallic copper surfaces for only 4 hours at the maximum, meaning that copper has a destructive effect and killing ability on new coronaviruses. Indeed, the inhibition of bacterial microorganisms by copper has long been a concern in academia and industry. In ancient times, people used verdigris (green basic copper carbonate generated by the reaction of copper with oxygen, carbon dioxide and water vapor in the air, also called bronze) as a traditional Chinese medicine for treating bacterial infection. The antibacterial and antiviral mechanisms of copper have been studied extensively by scientists to provide intrinsic mechanisms, e.g., copper can accept and release electrons in Cu+And Cu2+Can act as a catalyst to generate Reactive Oxygen Species (ROS), which in turn can lead to oxidative damage to cellular components such as proteins, nucleic acids, and lipids, including cell membranes, that are critical to bacterial survival. Copper ions may also be presentWill react with Zn2+Or other metal ions compete for the binding site of the protein, and this incorrect binding results in a change in the conformation of the protein such that dysfunction of the protein results in apoptosis of the bacterial cell.
Silver also has highly potent bacteriostatic and antiviral abilities, for example, it has been shown that silver can destroy the membrane structure of bacteria, resulting in damage to the membrane structure and leakage of intracellular substances. Silver and viruses have been studied less, but silver has been found to have an effect on the physiological function of viruses. For example, silver can bind to the double-stranded DNA of a virus, causing it to denature and die, affecting the viral replication.
The defects of the prior art are as follows: the function is single, only can filter particles or adsorb bacteria, but does not have the killing capacity of bacteria and viruses, and the killing efficiency of the bacteria and the viruses of the filter screen with the functions is doubtful, so that the filter screen does not have the capacity of long-term circulating bacteriostasis and antivirus.
Disclosure of Invention
In view of the above defects or improvement needs of the prior art, an object of the present invention is to provide a copper and silver-containing antibacterial and antiviral filter screen and a preparation method thereof, wherein copper and silver (including but not limited to physical vapor deposition, evaporation, chemical methods, etc.) are deposited on the surface of an organic-inorganic fiber filter screen by a physical vapor deposition (vacuum ion plating) method, compared with the prior art, the problems of efficient adsorption and efficient killing of bacteria and viruses can be effectively solved, and the prepared organic-inorganic fiber filter screen has a good combination effect with copper and silver; moreover, key process parameters (vapor deposition time length, deposition sequence and the like) are informed to be controlled, the mass fraction and distribution form of copper and silver can be controlled, and the copper and the silver on the surface of the fiber filter screen are in stable elementary substance states, so that the antibacterial and antiviral filter screen prepared by the method does not need aging, and the manufacturing time of a functional filter screen can be greatly shortened; due to the synergistic effect of copper and silver, the filter screen can realize long-term and efficient bacteriostasis and virus killing, and effectively solves the potential biological safety problem caused by pathogenic microorganisms and viruses in the environment. In order to achieve the aim, the invention provides a preparation method of a copper and silver-containing antibacterial and antiviral filter screen, which is characterized by being prepared by a physical vapor deposition method and comprising the following steps:
preparing high-purity copper and silver targets;
gasifying target materials of copper and silver into gaseous atoms by adopting a physical vapor deposition method under a vacuum condition, and depositing the gaseous atoms on the surface of the organic-inorganic fiber filter screen;
step three, taking out the organic-inorganic fiber filter screen after deposition, and washing for 2-4 times by using an alcohol solution;
and fourthly, carrying out hot air drying treatment on the washed organic and inorganic fiber filter screen to obtain the copper-silver containing antibacterial and antiviral filter screen.
In a further preferred embodiment of the present invention, in the first step, the copper target and the silver target have a standard size of
The thickness is 1-5 mm.
In a further preferred aspect of the present invention, in the second step, the organic-inorganic fiber mesh has an average fiber diameter of 0.01 to 20 μm.
As a further preferred aspect of the present invention, in the second step, the material of the fiber of the organic-inorganic fiber filter screen includes a polyethylene terephthalate fiber filter screen, a polypropylene fiber filter screen, a polyurethane fiber filter screen, a polytetrafluoroethylene fiber filter screen, and a cotton composite fiber filter screen.
In a further preferred embodiment of the present invention, in the second step, the time of physical vapor deposition is controlled to be 10 to 30 minutes, the mass fraction of surface copper is 0.01 to 10%, and the mass fraction of surface silver is 0.01 to 10%.
In a further preferred embodiment of the present invention, in the second step, two processes are adopted, one process is to deposit copper and then deposit silver, the color of the surface of the filter screen is gray, the other process is to deposit silver and then deposit copper, and the color of the surface of the filter screen is golden yellow.
In a further preferred embodiment of the present invention, in the third step, the concentration of the alcohol solution for washing is 80 to 100%.
Preferably, in the fourth step, the temperature of the hot air drying process is controlled to be 40-60 ℃.
As a further optimization of the invention, the copper and silver containing bacteriostatic and antiviral filter screen is applied to bacteriostatic and antiviral.
Compared with the prior art, the technical scheme of the invention has the advantages that the copper and the silver are deposited on the surface of the fiber filter screen by the vapor deposition method, the copper and the silver which are well dispersed and stable in property are obtained by the vapor deposition method, and the prepared organic-inorganic fiber filter screen has good combination effect with the copper and the silver. Because both copper and silver have high-efficiency antibacterial and virucidal capabilities and the copper and the silver have cooperative working capability, the functional filter screen is endowed with long-term high-efficiency antibacterial and virucidal capabilities; the vapor deposition of copper and silver changes the surface property of the filter material, so that the filter material has strong adsorption capacity on bacteria and viruses in the air.
The invention has the following beneficial effects:
according to the method, copper and silver are deposited on the surface of the organic-inorganic fiber filter screen, bacteria and viruses in the environment can be quickly adsorbed to the surface of the filter screen by means of the modification of the surface properties of the filter material by the copper and the silver, and meanwhile, the bacteria and the viruses are efficiently killed by means of the cooperative working capacity of the copper and the silver.
Drawings
FIG. 1 shows a hemp filter material after physical vapor deposition of copper and silver
FIG. 2 shows the distribution of the simple substance of copper and silver on the surface of the filter material detected by energy spectrum (EDS)
FIG. 3 shows a 5mm × 5mm single-layer copper-silver composite filter material and a high-concentration new coronavirus solution (SARS-CoV-2, 1 × 10)6TCID50/mL) antiviral Rate of 1 hour of reaction
Detailed Description
Example (b):
1. preparing the target material of high-purity silver and copper, the purity is more than 99.99 percent, and the specification size is
Has a thickness of2mm.
2. And (3) depositing silver on the surface of the fiber filter screen by adopting a vapor deposition method under the vacuum condition, wherein the deposition time is 5 minutes, and the mass fraction of the silver on the surface of the filter screen is 5%.
3. And (3) further depositing copper on the surface by adopting a vapor deposition method under the vacuum condition, wherein the deposition time is 5 minutes, and the mass fraction of silver on the surface of the filter screen is 5%.
4. After deposition, taking out the organic-inorganic fiber filter screen, and washing for 3 times by using 80% alcohol solution;
5. and (3) carrying out hot air drying treatment on the washed organic and inorganic fiber filter screen at the temperature of 50 ℃ for 30 minutes to obtain the copper-silver containing antibacterial and antiviral filter screen.
Claims (9)
1. The preparation method of the copper and silver-containing antibacterial and antiviral filter screen is characterized by being prepared by a physical vapor deposition method and specifically comprising the following steps of:
preparing high-purity copper and silver targets;
gasifying target materials of copper and silver into gaseous atoms by adopting a physical vapor deposition method under a vacuum condition, and depositing the gaseous atoms on the surface of the organic-inorganic fiber filter screen;
step three, taking out the organic-inorganic fiber filter screen after deposition, and washing for 2-4 times by using an alcohol solution;
and fourthly, carrying out hot air drying treatment on the washed organic and inorganic fiber filter screen to obtain the copper-silver containing antibacterial and antiviral filter screen.
2. The method for preparing the copper and silver-containing bacteriostatic and antiviral filter screen according to claim 1, wherein in the first step, the copper target material and the silver target material have the specification and size of
The thickness is 1-5 mm.
3. The method for preparing copper and silver containing bacteriostatic and antiviral filter screen according to claim 1, wherein in the second step, the average fiber diameter of the organic and inorganic fiber filter screen is 0.01-20 μm.
4. The method for preparing copper and silver containing bacteriostatic and antiviral filter screen according to claim 1, wherein in the second step, the fiber material of the organic and inorganic fiber filter screen comprises polyethylene terephthalate fiber filter screen, polypropylene fiber filter screen, polyurethane fiber filter screen, polytetrafluoroethylene fiber filter screen and cotton composite fiber filter screen.
5. The method for preparing the copper and silver-containing antibacterial and antiviral filter screen according to claim 1, wherein in the second step, the physical vapor deposition time is controlled to be 10-30 minutes, the mass fraction of the surface copper is 0.01-10%, and the mass fraction of the surface silver is 0.01-10%.
6. The method for preparing the copper and silver-containing antibacterial and antiviral filter screen according to claim 1, wherein in the second step, the process is divided into two processes, wherein one process deposits the copper first and then deposits the silver, the color of the surface of the filter screen is gray, the other process deposits the silver first and then deposits the copper, and the color of the surface of the filter screen is golden yellow.
7. The method for preparing the copper and silver-containing antibacterial and antiviral filter screen according to claim 1, wherein in the third step, the concentration of the alcohol solution for washing is 80-100%.
8. The method for preparing the copper and silver-containing antibacterial and antiviral filter screen according to claim 1, wherein in the fourth step, the temperature of the hot air drying process is controlled to be 40-60 ℃.
9. Use of a copper and silver containing bacteriostatic and antiviral filter screen according to any one of claims 1 to 8 for bacteriostatic and antiviral purposes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110337918.5A CN113209722A (en) | 2021-03-30 | 2021-03-30 | Copper and silver-containing antibacterial and antiviral filter screen and preparation method thereof |
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| CN202110337918.5A CN113209722A (en) | 2021-03-30 | 2021-03-30 | Copper and silver-containing antibacterial and antiviral filter screen and preparation method thereof |
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| CN113209722A true CN113209722A (en) | 2021-08-06 |
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| WO2008028355A1 (en) * | 2006-08-28 | 2008-03-13 | Peiqi Jiang | Method for making surface antibacterial products utilizing physical vapor deposition technology |
| JP2011212613A (en) * | 2010-03-31 | 2011-10-27 | Toshiba Corp | Antiviral filter for air conditioner |
| CN207599885U (en) * | 2017-11-13 | 2018-07-10 | 石狮市星火铝制品有限公司 | A kind of air purifier |
| CN111227345A (en) * | 2020-02-18 | 2020-06-05 | 江苏亿茂滤材有限公司 | Antibacterial and antiviral mask and preparation method thereof |
| CN111357764A (en) * | 2020-03-03 | 2020-07-03 | 北京大学 | Composite metal ion broad-spectrum sterilization and antivirus intelligent material and preparation method thereof |
| CN111729119A (en) * | 2020-06-01 | 2020-10-02 | 北京化工大学 | Air purification assembly with coronavirus killing function and application thereof |
| CN212555279U (en) * | 2020-05-27 | 2021-02-19 | 北京一工一艺人居环境科技有限公司 | Antibacterial and antiviral fiber material |
| CN212619061U (en) * | 2020-06-19 | 2021-02-26 | 刘闯 | Air filtering material and filter screen |
| CN112439274A (en) * | 2020-11-04 | 2021-03-05 | 海信（广东）空调有限公司 | Air conditioner purification filter screen and air conditioner |
| CN212754359U (en) * | 2020-02-18 | 2021-03-23 | 亿茂环境科技股份有限公司 | Antibacterial and antiviral mask |
-
2021
- 2021-03-30 CN CN202110337918.5A patent/CN113209722A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1564413A (en) * | 1975-10-03 | 1980-04-10 | Draegerwerk Ag | Filtering equipment with microbicidal filter material for suspended substances |
| WO2008028355A1 (en) * | 2006-08-28 | 2008-03-13 | Peiqi Jiang | Method for making surface antibacterial products utilizing physical vapor deposition technology |
| JP2011212613A (en) * | 2010-03-31 | 2011-10-27 | Toshiba Corp | Antiviral filter for air conditioner |
| CN207599885U (en) * | 2017-11-13 | 2018-07-10 | 石狮市星火铝制品有限公司 | A kind of air purifier |
| CN111227345A (en) * | 2020-02-18 | 2020-06-05 | 江苏亿茂滤材有限公司 | Antibacterial and antiviral mask and preparation method thereof |
| CN212754359U (en) * | 2020-02-18 | 2021-03-23 | 亿茂环境科技股份有限公司 | Antibacterial and antiviral mask |
| CN111357764A (en) * | 2020-03-03 | 2020-07-03 | 北京大学 | Composite metal ion broad-spectrum sterilization and antivirus intelligent material and preparation method thereof |
| CN212555279U (en) * | 2020-05-27 | 2021-02-19 | 北京一工一艺人居环境科技有限公司 | Antibacterial and antiviral fiber material |
| CN111729119A (en) * | 2020-06-01 | 2020-10-02 | 北京化工大学 | Air purification assembly with coronavirus killing function and application thereof |
| CN212619061U (en) * | 2020-06-19 | 2021-02-26 | 刘闯 | Air filtering material and filter screen |
| CN112439274A (en) * | 2020-11-04 | 2021-03-05 | 海信（广东）空调有限公司 | Air conditioner purification filter screen and air conditioner |
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