阅读说明：本技术 一种石墨烯n95折叠抗病毒口罩 (Antiviral gauze mask of folding of graphite alkene N95 ) 是由 王强 刘少华 于 2021-07-29 设计创作，主要内容包括：本发明公开了一种石墨烯N95折叠抗病毒口罩,该口罩由5层无纺布过滤层构成；第一层为纺粘无纺布,第二层至第四层均为相同的熔喷布,第五层为石墨烯纺粘无纺布。第一层采用克重为40-60克/㎡的纺粘无纺布。该纺粘无纺布为抗病毒纺粘无纺布,是在喷丝成网时向喷丝液中加入抗病毒因子而制成的。第二层至第四层采用H11级的熔喷布。第五层采用克重为10-25克/㎡的石墨烯纺粘无纺布。本发明提供的石墨烯N95折叠抗病毒口罩,要包括5层过滤层无纺布,通过不同结构无纺布组合,构成具有优异过滤效果的N95口罩,实现对污染空气的层层过滤,并避免常规产品中的二次污染问题,延长使用寿命,降低使用成本,具有极强的市场竞争力。(The invention discloses a graphene N95 folding antiviral mask, which is composed of 5 non-woven fabric filter layers; the first layer is spun-bonded non-woven fabric, the second layer to the fourth layer are the same melt-blown fabric, and the fifth layer is graphene spun-bonded non-woven fabric. The first layer is a spunbond nonwoven fabric having a grammage of 40-60 grams per square meter. The spun-bonded non-woven fabric is an antiviral spun-bonded non-woven fabric and is prepared by adding an antiviral factor into spinning liquid during spinning and web forming. The second layer to the fourth layer adopt H11-grade melt-blown cloth. The fifth layer adopts the graphene spun-bonded non-woven fabric with the gram weight of 10-25 grams per square meter. The graphene N95 folding antiviral mask provided by the invention comprises 5 layers of filter layer non-woven fabrics, and the N95 mask with excellent filtering effect is formed by combining the non-woven fabrics with different structures, so that the layer-by-layer filtering of polluted air is realized, the problem of secondary pollution in conventional products is avoided, the service life is prolonged, the use cost is reduced, and the market competitiveness is strong.)

1. A graphene N95 folding antiviral mask is characterized in that the mask is composed of 5 non-woven fabric filter layers; the first layer is spun-bonded non-woven fabric, the second layer to the fourth layer are the same melt-blown fabric, and the fifth layer is graphene spun-bonded non-woven fabric.

2. The graphene N95 folded antiviral mask of claim 1, wherein the first layer is an outermost layer and is a spunbond nonwoven fabric having a grammage of 40-60 grams per square meter.

3. The graphene N95 folded antiviral mask of claim 2, wherein the spun-bonded nonwoven fabric is spun into a web by a spun-bonding process.

4. The graphene N95 folding antiviral mask according to claim 3, wherein the spunbonded nonwoven is an antiviral spunbonded nonwoven, which is prepared by adding an antiviral factor into a spinning solution during spinning into a net.

5. The graphene N95 folded antiviral mask of claim 4, wherein the antiviral factor is any one or more of metal nanopowder, metal oxide, or graphene and its derivatives.

6. The graphene N95 folded antiviral mask of claim 5, wherein the metal nanopowder comprises silver and/or zinc and the metal oxide comprises titanium dioxide.

7. The graphene N95 folded antiviral mask of claim 1, wherein the second layer to the fourth layer are meltblown with H11 standard.

8. The graphene N95 folded antiviral mask of claim 1, wherein said fifth layer comprises a graphene spunbond nonwoven fabric having a grammage of 10-25 grams per square meter.

Technical Field

The invention relates to a graphene antiviral mask, in particular to a graphene N95 folding antiviral mask.

Background

Graphene is a single-layer carbon atom material stripped from graphite, and a single-layer two-dimensional honeycomb lattice structure is formed by tightly packing carbon atoms, and is known to be the material with the thinnest thickness, the hardest texture and the best conductivity. Graphene has excellent mechanical, optical and electrical properties and a very stable structure, researchers have not found that graphene has a missing carbon atom, the linkage between carbon atoms is very flexible, and is harder than diamond, the strength is 100 times higher than that of the world's best steel, if graphene is used for making a packaging bag, the graphene can bear about two tons of articles, the graphene is almost completely transparent, but is very compact, waterproof and airtight, helium gas with the minimum atomic size cannot pass through the graphene, the graphene has good conductivity, the movement speed of electrons in graphene reaches 1/300 of the light speed, the conductivity exceeds that of any traditional conductive material, the chemical properties are similar to the surface of graphite, various atoms and molecules can be adsorbed and desorbed, and the graphene also has the capability of resisting strong acid and strong alkali. Meanwhile, the graphene also has excellent antibacterial and antiviral functions.

At present, a common mask can only block the passage of virus particles and cannot kill and inhibit the virus activity, namely the protective effect of the common mask is limited. The graphene material is combined in the mask, so that the antibacterial and antiviral functions of the mask can be obviously improved.

Disclosure of Invention

The invention aims to provide a graphene antiviral mask, which is characterized in that the traditional mask is structurally innovated, the mask mainly comprises a plurality of layers of non-woven fabrics, pollutant particles in air can be effectively filtered, the effective removal rate of PM2.5 is more than 99%, and the graphene non-woven fabrics have the effects of sterilization and virus resistance and reduce secondary pollution of the mask.

In order to achieve the purpose, the invention provides a graphene N95 folding antiviral mask, wherein the mask is composed of 5 non-woven fabric filter layers; the first layer is spun-bonded non-woven fabric, the second layer to the fourth layer are the same melt-blown fabric, and the fifth layer is graphene spun-bonded non-woven fabric.

The graphene N95 folding antiviral mask is characterized in that the first layer is the outermost layer and is a spun-bonded non-woven fabric with the gram weight of 40-60 grams per square meter.

The graphene N95 folding anti-virus mask is characterized in that the spun-bonded non-woven fabric is prepared by spinning through a spun-bonding process to form a net.

The graphene N95 folding anti-virus mask is characterized in that the spun-bonded non-woven fabric is anti-virus spun-bonded non-woven fabric and is prepared by adding anti-virus factors into spinning liquid during spinning and web forming.

The graphene N95 folding antiviral mask is characterized in that the antiviral factors are any one or more of metal nano-powder, metal oxide or graphene and derivatives thereof.

The graphene N95 folded antiviral mask is characterized in that the metal nano powder comprises silver and/or zinc, and the metal oxide comprises titanium dioxide.

The graphene N95 folding antiviral mask is characterized in that the second layer to the fourth layer are made of H11-grade melt-blown cloth.

The graphene N95 folding antiviral mask is characterized in that the fifth layer is made of graphene spun-bonded non-woven fabric with the gram weight of 10-25 grams per square meter.

The graphene N95 folding antiviral mask provided by the invention has the following advantages:

the invention is improved and innovated based on the traditional N95 mask, prepares a folded N95 antibacterial and antiviral mask, can be applied to filter screens in other air filters and other occasions and industrial workshop occasions, improves the filtering efficiency of the original filter screen, can effectively remove toxic and harmful substances such as particles, bacteria, viruses and the like contained in the indoor environment, the in-vehicle environment and other environments, has high-efficiency sterilization effect by graphene, reduces the secondary pollution generated in the using process of the mask, and protects the health of people.

The graphene N95 folding antiviral mask provided by the invention is simple in production process, easy to operate, low in cost, high in economic benefit and suitable for large-scale industrial production.

Drawings

Fig. 1 is a schematic structural diagram of a filter screen of the graphene N95 folded antiviral mask of the present invention.

Wherein, 1, a first layer; 2. a second layer; 3. a third layer; 4. a fourth layer; 5. and a fifth layer.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1, the graphene N95 folded antiviral mask provided by the invention is composed of 5 non-woven fabric filter layers; first layer 1 is the spunbonded nonwoven, and second layer 2 to fourth layer 4 are the same melt-blown fabrics, and fifth layer 5 is the graphene spunbonded nonwoven.

Preferably, the first layer 1 is the outermost layer and is a spunbond nonwoven having a grammage of 40 to 60 grams per square meter.

The spun-bonded non-woven fabric is formed by spinning and forming a net through a spun-bonded process.

The spun-bonded non-woven fabric is an antiviral spun-bonded non-woven fabric and is prepared by adding an antiviral factor into spinning liquid during spinning and web forming.

The antiviral factor is any one or more of metal nano powder, metal oxide, graphene and derivatives thereof.

The metal nano powder contains silver and/or zinc, and the like, and the metal oxide contains titanium dioxide, and the like.

In the antiviral non-woven fabric, the addition proportion of the antiviral factors is 0.1-5 percent, and the balance is common polypropylene slices.

The preparation process of the anti-virus spun-bonded non-woven fabric comprises the following steps:

the method comprises the following steps: preparing master batches, namely grinding common polypropylene slices, wherein the grain diameter is 100-200 meshes after grinding, adding the antiviral factors into the ground polypropylene slices, uniformly mixing the antiviral factors, and drying the mixture for later use;

step two: melt spinning, the mixture is put into a screw extruder, the temperature of a feeding area is set to 205-. Adjusting equipment parameters, wherein the pressure of a spinning melt is 6-10Mpa, the spinning speed is 3000-45000m/min, and the screw speed is 50-60 r/min;

step three: cooling the fiber, wherein the rotating speed of a cooling fan is 1450-;

step four: airflow drafting, wherein the fiber drafting speed is 4500-5500m/min, and the drafting multiple is 500-800 times;

step five: dividing the fibers into nets, separating the fibers from each other through a fiber dividing device, collecting the fibers after the fibers are divided into nets, and setting the net forming speed to be 300-600 m/min;

step six: heat setting, the fiber web passes through a heat setting area and is hot-pressed by a hot-pressing roller to form a certain pattern node to form a non-woven fabric with certain strength;

step seven: and cutting edges and winding, wherein the fiber web is subjected to heat setting to form non-woven fabric with a certain specification, then the non-woven fabric is cut by a cutting edge machine and wound on a winding roller to form non-woven fabric rolls with a certain specification.

This filter cloth intensity is higher, and antiviral effectual reduces the external force damage that inlayer H11 level melt-blown fabric received simultaneously, and the protection melts the cloth structural integrity, and the microporous construction that this layer of spunbonded fabric has simultaneously carries out primary filter to the contaminated air, and protection melts the cloth filtration micropore of spouting and avoids blockking up, improves inlayer non-woven fabrics life.

The second layer 2 to the fourth layer 4, i.e. including the third layer 3, all employ meltblown fabric having a specification of H11.

The multilayer melt-blown fabric has higher filtering precision, effectively removes most of PM2.5, bacteria, viruses and other tiny pollutants, and greatly improves the filtering efficiency. The H11 grade is a grade in which the filtration efficiency of the air filtration material to fine particles having a particle size of 0.3 μm or more is more than 99%.

The fifth layer 5 adopts the graphene spun-bonded non-woven fabric with the gram weight of 10-25 grams per square meter.

The preparation process of the graphene spunbonded non-woven fabric comprises the following steps:

step 1: preparing master batches, namely grinding common polypropylene slices, wherein the grain size is 100-200 meshes after grinding, adding the graphene and the modifier into the ground polypropylene slices, uniformly mixing the graphene and the modifier, and drying the mixture for later use;

step 2: melt spinning, the mixture is put into a screw extruder, the temperature of a feeding area is set to 200-. Adjusting equipment parameters, wherein the spinning melt pressure is 3-6Mpa, the spinning speed is 1500-;

and step 3: cooling the fiber, wherein the rotating speed of a cooling fan is 1450-;

and 4, step 4: airflow drafting, wherein the fiber drafting speed is 4000-;

and 5: dividing the fibers into nets, separating the fibers from each other through a fiber dividing device, collecting the fibers after the fibers are divided into nets, and setting the net forming speed to be 300-600 m/min;

step 6: heat setting, the fiber web passes through a heat setting area and is hot-pressed by a hot-pressing roller to form a certain pattern node to form a non-woven fabric with certain strength;

and 7: and cutting edges and winding, wherein the fiber web is subjected to heat setting to form non-woven fabric with a certain specification, then the non-woven fabric is cut by a cutting edge machine and wound on a winding roller to form non-woven fabric rolls with a certain specification.

In the graphene non-woven fabric, the addition ratio of graphene is 0.1-5%, the addition ratio of a modifier is 0.5-10%, and the balance is common polypropylene slices.

The graphene is prepared by any one of a mechanical stripping method, a chemical vapor deposition method, an oxidation-reduction method and the like.

The modifier is one or more of hydroxypropyl cellulose, sodium lignosulphonate, polyvinylpyrrolidone (PVP) and silane coupling agent.

The layer of non-woven fabric has excellent antibacterial effect, and secondary pollution caused by bacterial breeding is avoided.

The production equipment employed in the present invention is all existing equipment known to those skilled in the art.

The graphene N95 folded antiviral mask provided by the present invention is further described below with reference to the following examples.

Example 1

A graphene N95 folding antivirus mask comprises 5 layers of non-woven fabric filter layers; first layer 1 is the spunbonded nonwoven, and second layer 2 to fourth layer 4 are the same melt-blown fabrics, and fifth layer 5 is the graphene spunbonded nonwoven.

Preferably, the first layer 1 is the outermost layer and is a spunbond nonwoven fabric having a grammage of 40 to 45 grams per square meter.

The spun-bonded non-woven fabric is formed by spinning and forming a net through a spun-bonded process.

The spun-bonded non-woven fabric is an antiviral spun-bonded non-woven fabric and is prepared by adding an antiviral factor into spinning liquid during spinning and web forming.

The antiviral factor is metal nano powder, and the metal nano powder contains silver.

And the second layer 2 to the fourth layer 4 adopt H11-grade melt-blown cloth.

The fifth layer 5 adopts graphene spun-bonded non-woven fabric with the gram weight of 10-15 grams per square meter.

The mask comprises 0.1% of antiviral factors and 0.1% of graphene by mass percent.

Example 2

A graphene N95 folding antivirus mask comprises 5 layers of non-woven fabric filter layers; first layer 1 is the spunbonded nonwoven, and second layer 2 to fourth layer 4 are the same melt-blown fabrics, and fifth layer 5 is the graphene spunbonded nonwoven.

Preferably, the first layer 1 is the outermost layer and is a spunbond nonwoven having a grammage of 45 to 50 grams per square meter.

The spun-bonded non-woven fabric is formed by spinning and forming a net through a spun-bonded process.

The spun-bonded non-woven fabric is an antiviral spun-bonded non-woven fabric and is prepared by adding an antiviral factor into spinning liquid during spinning and web forming.

The antiviral factor is metal nano powder, and the metal nano powder contains zinc.

And the second layer 2 to the fourth layer 4 adopt H11-grade melt-blown cloth.

The fifth layer 5 adopts the graphene spun-bonded non-woven fabric with the gram weight of 15-20 grams per square meter.

The mask comprises 0.5% of antiviral factors and 0.5% of graphene by mass percent.

Example 3

A graphene N95 folding antivirus mask comprises 5 layers of non-woven fabric filter layers; first layer 1 is the spunbonded nonwoven, and second layer 2 to fourth layer 4 are the same melt-blown fabrics, and fifth layer 5 is the graphene spunbonded nonwoven.

Preferably, the first layer 1 is the outermost layer and is a spunbond nonwoven having a grammage of 50 to 55 grams per square meter.

The spun-bonded non-woven fabric is formed by spinning and forming a net through a spun-bonded process.

The spun-bonded non-woven fabric is an antiviral spun-bonded non-woven fabric and is prepared by adding an antiviral factor into spinning liquid during spinning and web forming.

The antiviral factor is metal nano powder, and the metal nano powder comprises silver and zinc.

And the second layer 2 to the fourth layer 4 adopt H11-grade melt-blown cloth.

The fifth layer 5 adopts the graphene spun-bonded non-woven fabric with the gram weight of 20-25 grams per square meter.

The mask comprises 1% of antiviral factors and 1% of graphene by mass percent.

Example 4

A graphene N95 folding antivirus mask comprises 5 layers of non-woven fabric filter layers; first layer 1 is the spunbonded nonwoven, and second layer 2 to fourth layer 4 are the same melt-blown fabrics, and fifth layer 5 is the graphene spunbonded nonwoven.

Preferably, the first layer 1 is the outermost layer and is a spunbond nonwoven fabric having a grammage of 55 to 60 grams per square meter.

The spun-bonded non-woven fabric is formed by spinning and forming a net through a spun-bonded process.

The spun-bonded non-woven fabric is an antiviral spun-bonded non-woven fabric and is prepared by adding an antiviral factor into spinning liquid during spinning and web forming.

The antiviral agent is a metal oxide, and the metal oxide comprises titanium dioxide.

And the second layer 2 to the fourth layer 4 adopt H11-grade melt-blown cloth.

The fifth layer 5 adopts the graphene spun-bonded non-woven fabric with the gram weight of 10-20 grams per square meter.

The mask comprises 2% of antiviral factors and 2% of graphene by mass percent.

Example 5

A graphene N95 folding antivirus mask comprises 5 layers of non-woven fabric filter layers; first layer 1 is the spunbonded nonwoven, and second layer 2 to fourth layer 4 are the same melt-blown fabrics, and fifth layer 5 is the graphene spunbonded nonwoven.

Preferably, the first layer 1 is the outermost layer and is a spunbond nonwoven fabric having a grammage of 45 to 55 grams per square meter.

The spun-bonded non-woven fabric is formed by spinning and forming a net through a spun-bonded process.

The spun-bonded non-woven fabric is an antiviral spun-bonded non-woven fabric and is prepared by adding an antiviral factor into spinning liquid during spinning and web forming.

The antiviral factor is graphene.

And the second layer 2 to the fourth layer 4 adopt H11-grade melt-blown cloth.

The fifth layer 5 adopts the graphene spun-bonded non-woven fabric with the gram weight of 15-25 grams per square meter.

The mask comprises 5% of antiviral factors and 5% of graphene by mass percent.

The functional tests were performed on the finished products obtained in each example, and the results are shown in table 1 below.

TABLE 1 test results.

The graphene N95 folding antiviral mask provided by the invention can effectively filter pollutants in air, has a good protection effect when being used for a respiratory system of people, has excellent antibacterial and antiviral properties, avoids secondary pollution of the mask, has an antibacterial and antiviral effect of over 99% when being tested by a third-party testing mechanism, is physically antibacterial and non-consumable chemical reagent antibacterial, cannot be attenuated along with the use time, and can better and more durably protect the health of people. The five-layer filtering structure of the graphene N95 structure folding antibacterial and antiviral mask realizes layer-by-layer filtration of polluted air, avoids the problem of secondary pollution in conventional products, prolongs the service life, reduces the use cost and has strong market competitiveness.

While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.