阅读说明：本技术 一种纳米银线空气过滤网、抗菌口罩及制作方法 (Nano-silver wire air filter screen, antibacterial mask and manufacturing method ) 是由 赖耀升 江建志 彭丰章 于 2019-09-30 设计创作，主要内容包括：本发明涉及空气过滤技术领域,本发明的技术方案为：一种纳米银线空气过滤网、抗菌口罩及制作方法,所述过滤网包括上下两层支撑网,中间层为纳米银线过滤膜；所述纳米银线过滤膜涂布或印刷至上支撑网的下表面或下支撑网的上表面或上支撑网的下表面和下支撑网的上表面；纳米银线上黏连有纳米银颗粒。纳米银线抗菌口罩,所述口罩包括口罩本体和带绳,所述口罩本体包括上下两层支撑底布,中间层为纳米银线空气过滤网杀菌层；上层支撑底布和下层支撑底布均为无纺布过滤层；上层支撑底布上方设有外表层,下层支撑底布下方设有内表层。(The invention relates to the technical field of air filtration, and the technical scheme of the invention is as follows: a nano silver wire air filter screen, an antibacterial mask and a manufacturing method thereof are provided, wherein the filter screen comprises an upper layer of support screen and a lower layer of support screen, and the middle layer is a nano silver wire filter membrane; the nano silver wire filtering membrane is coated or printed on the lower surface of the upper supporting net or the upper surface of the lower supporting net or the lower surface of the upper supporting net and the upper surface of the lower supporting net; the nano silver wire is adhered with nano silver particles. The nano silver wire antibacterial mask comprises a mask body and a strap, wherein the mask body comprises an upper layer of supporting base fabric and a lower layer of supporting base fabric, and the middle layer is a nano silver wire air filter screen sterilization layer; the upper layer supporting base fabric and the lower layer supporting base fabric are non-woven fabric filter layers; an outer surface layer is arranged above the upper supporting base cloth, and an inner surface layer is arranged below the lower supporting base cloth.)

1. The nano-silver wire air filter screen is characterized in that the filter screen comprises an upper layer of support screen and a lower layer of support screen, and the middle layer is a nano-silver wire filter membrane;

and the nano silver wire filtering membrane is coated or printed on the lower surface of the upper supporting net or the upper surface of the lower supporting net or the lower surface of the upper supporting net and the upper surface of the lower supporting net.

2. The silver nanowire airstrainer of claim 1, wherein: the nano silver wire is adhered with nano silver particles.

3. An antibacterial mask made of the silver nanowire air filter screen of claim 1, wherein the mask comprises a mask body and a strap, the mask body comprises an upper supporting base fabric and a lower supporting base fabric, and the middle layer is a nano silver wire air filter screen sterilization layer.

4. The antibacterial mask with nano silver wires as claimed in claim 3, wherein: the upper layer supporting base fabric and the lower layer supporting base fabric are non-woven fabric filter layers.

5. The antibacterial mask with nano silver wires as claimed in claim 3, wherein: an outer surface layer is arranged above the upper supporting base cloth, and an inner surface layer is arranged below the lower supporting base cloth.

6. A method for manufacturing the nano silver wire air filter screen according to any one of claims 1 or 2, comprising the following steps:

1) growing a nano silver wire with the diameter of 10-100 nanometers and the length of 10-300um by adopting a chemical method, adding nano silver particles, and mixing the nano silver particles into special coating liquid to prepare nano silver wire ink;

2) printing or coating the nano silver wire ink on a supporting net;

3) carrying out heat treatment on the nano silver wire filtering membrane by adopting an oven at about 200 ℃ or strong light irradiation;

4) after thermosetting film forming, a multi-layer net-shaped woven three-dimensional structure is formed, and the mesh size is distributed within 10 um.

5) And (4) attaching and fixing the upper and lower supporting nets to form the nano silver wire air filter screen.

7. A method for manufacturing the nano silver wire antibacterial mask according to any one of claims 3 to 5, which comprises the following steps:

1) growing a nano silver wire with the diameter of 10-100 nanometers and the length of 10-300um by adopting a chemical method, adding nano silver particles, and mixing the nano silver particles into special coating liquid to prepare nano silver wire ink;

2) printing or coating the nano silver wire ink on a supporting base fabric;

3) carrying out heat treatment on the nano silver wire filtering membrane by adopting an oven at about 200 ℃ or strong light irradiation;

4) after thermosetting film forming, a multi-layer net-shaped woven three-dimensional structure can be formed, and the mesh size is distributed within 10 um;

5) attaching and fixing the upper and lower supporting nets to form a nano silver wire air filter net;

6) sewing/attaching and fixing the upper and lower supporting base fabrics;

7) and sewing/attaching and fixing the outer surface layer and the inner surface layer to form the nano silver wire antibacterial mask.

Technical Field

The invention relates to the technical field of air filtration, in particular to a nano silver wire air filter screen, an antibacterial mask and a manufacturing method.

Background

With the progress of science and technology, people have more and more intensive research on microorganisms, a lot of bacteria and viruses harmful to human health are hidden in the air for a long time, toxic and harmful gases can be emitted in room decoration within a certain time, and harmful bacteria and viruses are easily spread in intensive public places and medical places, so that the physical health of people is influenced. In addition to the above places, many closed spaces are also very easy to breed bacteria, viruses and the like, such as rooms with air conditioners, automobiles, dust-free laboratories, workshops and the like.

Air filter screens come along, and a great variety of air filter screens are available in the market, such as smell filtering, dust filtering, sterilization and the like, and the air filter screens are also used in many occasions, such as air conditioners, fresh air systems, air purifiers and the like.

The nano silver has good bactericidal effect, is a powdery silver simple substance, has the particle size of less than 100nm, and is generally between 10 and 50 nm. The nano silver particles can be directly combined with oxygen metabolizing enzyme (-SH) of the thallus, so that the unique action mechanism of the thallus is that the thallus is suffocated, and most of microbes such as bacteria, fungi, mildew, spores and the like which are contacted with the nanometer silver particles can be killed. More than 650 bacteria can be killed within a few minutes. Has strong inhibiting and killing effects on dozens of pathogenic microorganisms such as escherichia coli, gonococcus, chlamydia trachomatis and the like, and can not generate drug resistance. The smaller the particle size, the stronger the bactericidal performance.

However, if the nano silver particles are used alone, the sterilization effect is very limited, the nano silver particles need to contact with bacteria or viruses for a certain time to achieve the sterilization effect, and the time for the filter screen of the nano silver particles to contact with the bacteria is very limited.

In addition, the nano silver particles in the plastic filter screen product are easy to separate out, and do not have a sterilization function after separation, the time is generally different from three months to half a year, the nano silver particles released into the environment can have a certain influence on the ecology, and beneficial bacteria in the environment can be killed. The nano silver particles separated out by long-term contact can form silver deposition in organisms, and can generate adverse effects on organisms and human bodies, and even obvious poisoning phenomena can be caused by excessive deposition.

People pay more and more attention to the health and protection of the people at present, and actively take various effective countermeasures, and the most widely used is the dustproof and particle-proof mask. The common mask has very limited effect on filtering fine particles, odor, volatile organic compounds and some harmful microorganisms in the air, the masks on the market have various brands and uneven quality, and consumers are difficult to correctly select the proper mask.

The mask which accords with the technical specification of daily protective masks has obvious effects on filtering fine particles (mainly PM2.5) and peculiar smell in air, but has limited effects on the aspects of antibiosis and antivirus, and cannot effectively resist the transmission of pathogenic bacteria and influenza viruses. When the mask is worn for a long time, a large amount of bacteria in the mask can be propagated, and the health of a human body is endangered.

The publication No. CN206776790U discloses a Chinese utility model patent of an antibacterial fine particulate gauze mask containing nano-silver activated carbon, which utilizes the activated carbon as a carrier of nano-silver particles and is loaded on a base fabric to obtain a composite material sterilization filter layer. The nano silver particles are easy to separate out on the activated carbon, the activated carbon particles are large, a very large gap exists, bacteria are difficult to effectively adsorb, the size of the bacteria is about 1-2 um, the purpose of prolonging the contact time with the bacteria cannot be achieved, in addition, the nano silver particles are easy to separate out, the nano silver particles do not have a sterilization function after separation, the time is generally different from three months to half a year, the nano silver particles are released into the environment and can have certain influence on the ecology, and beneficial bacteria in the environment can be killed. The nano silver particles separated out by long-term contact can form silver deposition in organisms, and can generate adverse effects on organisms and human bodies, and even obvious poisoning phenomena can be caused by excessive deposition. Obviously, the sterilizing effect of the mask of the scheme is very limited.

Disclosure of Invention

The invention aims to provide a nano silver wire air filter screen, an antibacterial mask and a manufacturing method.

The technical purpose of the invention is realized by the following technical scheme:

a nano silver wire air filter screen comprises an upper layer of support screen and a lower layer of support screen, wherein the middle layer is a nano silver wire filter membrane;

and the nano silver wire filtering membrane is coated or printed on the lower surface of the upper supporting net or the upper surface of the lower supporting net or the lower surface of the upper supporting net and the upper surface of the lower supporting net.

As a preferred scheme of the air filter screen with the nano silver wires, the nano silver wires are adhered with nano silver particles.

The utility model provides a nano silver line antibiotic gauze mask, the gauze mask includes gauze mask body and area rope, the gauze mask body includes upper and lower two-layer support backer, and the intermediate level is nano silver line airstrainer layer of disinfecting.

As a preferred scheme of the nano silver wire antibacterial mask, the upper supporting base fabric and the lower supporting base fabric are non-woven fabric filter layers.

As a preferred scheme of the nano silver wire antibacterial mask, an outer surface layer is arranged above the upper layer of supporting base cloth, and an inner surface layer is arranged below the lower layer of supporting base cloth.

A manufacturing method of a nano silver wire air filter screen comprises the following steps:

1) growing a nano silver wire with the diameter of 10-100 nanometers and the length of 10-300um by adopting a chemical method, adding nano silver particles, and mixing the nano silver particles into special coating liquid to prepare nano silver wire ink;

2) printing or coating nano silver ink on a supporting net;

3) carrying out heat treatment on the nano silver wire filtering membrane by adopting an oven at about 200 ℃ or strong light irradiation;

4) after thermosetting film forming, a multi-layer net-shaped woven three-dimensional structure is formed, and the mesh size is distributed within 10 um.

5) And (4) attaching and fixing the upper and lower supporting nets to form the nano silver wire air filter screen.

A method for manufacturing a nano silver wire antibacterial mask comprises the following steps:

1) growing a nano silver wire with the diameter of 10-100 nanometers and the length of 10-300um by adopting a chemical method, adding nano silver particles, and mixing the nano silver particles into special coating liquid to prepare nano silver wire ink;

2) printing or coating the nano silver wire ink on a supporting base fabric;

3) carrying out heat treatment on the nano silver wire filtering membrane by adopting an oven at about 200 ℃ or strong light irradiation;

4) after thermosetting film forming, a multi-layer net-shaped woven three-dimensional structure can be formed, and the mesh size is distributed within 10 um;

5) attaching and fixing the upper and lower supporting nets to form a nano silver wire air filter net;

6) sewing/attaching and fixing the upper and lower supporting base fabrics;

7) and sewing/attaching and fixing the outer surface layer and the inner surface layer to form the nano silver wire antibacterial mask.

In conclusion, the invention has the following beneficial effects:

the nano-silver wire air filter screen provided by the invention is formed by interweaving nano-silver wires into a net, nano-silver particles are fused and adsorbed on the nano-silver wire net, and nano-silver is not easy to release to pollute the environment; the nano silver wire air filter screen is completely made of nano silver, and the thickness and the mesh size of the nano silver wire air filter screen are adjusted to achieve the optimal sterilization effect; the nano silver particles are added into the nano silver wire net, and the nano silver particles are fused with the nano silver wire through heat treatment, so that the nano silver wires are not easy to fall off, the surface area of the nano silver can be increased, and the opportunity of adsorbing and killing bacteria is increased; the nano silver wire air filter screen has high ductility and is washable.

Compared with the traditional method, the nano silver particles are adsorbed on the base fabric fibers or the activated carbon and are not resistant to washing, the nano silver particles are easily released into the environment and are adsorbed into a human body even through breathing, so that the adverse effect is generated on the human body, and the phenomenon of obvious poisoning is caused even if the nano silver particles are excessively deposited; the sterilizing mask made of the nano silver wire air filter screen has a remarkable sterilizing effect, and the inner surface layer of the sterilizing mask is made of skin-friendly fabric, so that the sterilizing mask is comfortable and healthy to wear and cannot have adverse effects on a human body.

Drawings

Fig. 1 is a schematic structural diagram of a nano silver wire air filter screen.

Fig. 2 is a schematic structural diagram of a nano silver wire antibacterial mask.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easy to understand, the invention is further described with reference to the figures and the specific embodiments.

A nano silver wire air filter screen comprises an upper layer of support screen and a lower layer of support screen, wherein the middle layer is a nano silver wire filter membrane; the nano silver wire filtering membrane is coated or printed on the lower surface of the upper supporting net or the upper surface of the lower supporting net or the lower surface of the upper supporting net and the upper surface of the lower supporting net; the nano silver wire is adhered with nano silver particles.

A manufacturing method of a nano silver wire air filter screen comprises the following steps:

1) growing a nano silver wire with the diameter of 10-100 nanometers and the length of 10-300um by adopting a chemical method, adding nano silver particles, and mixing the nano silver particles into special coating liquid to prepare nano silver wire ink;

2) printing or coating nano silver ink on a supporting net;

3) carrying out heat treatment on the nano silver wire filtering membrane by adopting an oven at about 200 ℃ or strong light irradiation;

4) after thermosetting film forming, a multi-layer net-shaped woven three-dimensional structure is formed, and the mesh size is distributed within 10 um.

5) And (4) attaching and fixing the upper and lower supporting nets to form the nano silver wire air filter screen.

In the technical scheme, each wire net of the air filter screen made of the nano silver particles and the nano silver wires has high antibacterial performance, the filter screen is easy to clean, and the antibacterial performance of the air filter screen can not be reduced after washing; the special coating liquid adopted in the step 1) can refer to a production process of the nano silver wire transparent conductive film proposed by a reference document '201611245540.1', and discloses a preparation method of the nano silver wire coating liquid, which comprises the following steps: dissolving a nano silver wire with the diameter of 10-100 nm and the length of less than or equal to 200 mu m in sol with the solid content of 0.5-10 wt% and the average particle size of 10-100 nm, so that 1-10 g of silver is contained in every 1Kg of nano silver wire coating liquid; the solid content of the nano silver wire coating liquid is 0.5-11 wt%, the viscosity is 1-25 cps, and the coating weight of the nano silver wire coating is 10-50 mL/m 2; in the step 3), an oven at about 200 ℃ or strong light irradiation is adopted to carry out heat treatment on the nano silver wire filtering membrane so as to remove components such as the adhesive, the coating agent and the like; meanwhile, the nano silver can be fused together in the heat treatment process, and the nano silver wire also adsorbs and fuses the nano silver particles; in the step 4), the concentration of the silver nanowires in the ink can be adjusted to adjust the mesh size, and the silver nanowires in the mesh adsorb the silver nanoparticles.

It is worth noting that the thickness of the nano silver wire filtering membrane can reach the required thickness by a mode of printing for a plurality of times, so that bacteria can pass through the nano silver wire filtering membrane as if passing through a channel; the thickness and the mesh size of the nano silver wire air filter screen are adjusted, so that bacteria (with the size of about 1-2 um) can easily collide with the nano silver wires or nano silver particles, and the bacteria can pass through the nano silver wire or the nano silver particles within minutes, and the optimal sterilization effect is achieved.

A nano silver wire antibacterial mask comprises a mask body and a strap, wherein the mask body comprises an upper layer of supporting base fabric and a lower layer of supporting base fabric, and the middle layer is a nano silver wire air filter screen sterilization layer; the upper layer supporting base fabric and the lower layer supporting base fabric are non-woven fabric filter layers; an outer surface layer is arranged above the upper supporting base cloth, and an inner surface layer is arranged below the lower supporting base cloth.

A method for manufacturing a nano silver wire antibacterial mask comprises the following steps:

1) growing a nano silver wire with the diameter of 10-100 nanometers and the length of 10-300um by adopting a chemical method, adding nano silver particles, and mixing the nano silver particles into special coating liquid to prepare nano silver wire ink;

2) printing or coating the nano silver wire ink on a supporting base fabric;

3) carrying out heat treatment on the nano silver wire filtering membrane by adopting an oven at about 200 ℃ or strong light irradiation;

4) after thermosetting film forming, a multi-layer net-shaped woven three-dimensional structure can be formed, and the mesh size is distributed within 10 um;

5) attaching and fixing the upper and lower supporting nets to form a nano silver wire air filter net;

6) sewing/attaching and fixing the upper and lower supporting base fabrics;

7) and sewing/attaching and fixing the outer surface layer and the inner surface layer to form the nano silver wire antibacterial mask.

In the technical scheme, the nano silver wire antibacterial mask adopts a five-layer structure, wherein the middle layer is a nano silver wire air filter screen sterilization layer, and the upper layer of the upper support base fabric is an outer surface layer and can be made into cloth with various patterns or colors; the lower layer of the lower supporting base fabric is an inner surface layer, and the lower supporting base fabric is made of skin-friendly fabric, so that the lower supporting base fabric is more comfortable and healthier to wear; the upper and lower supporting base cloths are combined with the outer surface layer and the inner surface layer, so that the antibacterial mask is suitable for manufacturing various antibacterial masks; each silver wire net in the sterilizing filter screen has antibacterial performance and high antibacterial performance; the mask is easy to clean, the washing nano silver wires are not separated out, and the antibacterial function is not reduced; in the steps 3) and 4), the nano silver wire filtering membrane is subjected to heat treatment by using an oven at about 200 ℃ or strong light irradiation, nano silver particles are recrystallized and fused by the nano silver wires, after the nano silver particles are thermally cured to form a film, a multi-layer net-shaped woven three-dimensional structure can be formed, the mesh size is approximately distributed within 10 microns, and the concentration of the nano silver wires in the ink can be adjusted to adjust the mesh size. The repeated coating times can increase the thickness of the sterilizing layer of the nano silver wire filter screen, and nano silver particles are fused and adsorbed on the nano silver wires in the screen.

The surface migration of the nano silver wire generates recrystallization, which can occur at about 150-200 ℃, and the fusion between the nano silver wires is realized. The dissociation temperature of the organic matter on the surface of the nano silver wire is 160-. Therefore, the heat treatment after coating can be carried out by adopting an oven with the temperature of about 200 ℃.

The strong light irradiation heating technology realizes the local melting and welding of the lap joint of the nanometer silver wire grids in the film layer, and the technology can avoid the damage of the whole heating treatment to the flexible substrate.

The principle of intense light irradiation heating (also referred to as "irradiation-technology fusion welding" in some places) is to melt the junction by inducing ion resonance on the surface of the nano silver wire and generating a high-intensity electric field at the junction. The heat effect generated at the joint is greatly higher than that of other parts of the film layer, and the film can be suitable for the flexible base material which does not resist temperature. The light source can be selected from common light sources or lasers, and the common light sources have the advantages of low equipment requirement and simplicity in operation, and generally require 1-2 minutes.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.