阅读说明：本技术 一种新式抗病毒pu防护服 (Novel antiviral PU protective clothing ) 是由 黄士龍 于 2021-07-21 设计创作，主要内容包括：本发明涉及到一种新式抗病毒PU防护服,由改性PU制成,所述改性PU表面设置有除菌剂,所述除菌剂包括纳米银、纳米氧化锌、纳米硫酸铜、纳米二氧化硅、助剂；将这种除菌剂喷涂在PU防护服表面,可以使衣物具有良好的抗菌作用；其中纳米银是一种极为常见的纳米杀菌剂,细小的纳米氧化锌颗粒也具有良好的抗菌作用,细小的纳米氧化锌颗粒相互之间可以牢靠的粘合在一起,因此在将这种除菌剂喷涂在衣物表面时,就可以在其表面形成一层的抗菌保护膜且性能稳定,可以中高温的水中清洗若干次；另外铜离子也是一种良好的除菌剂,而纳米二氧化硅因为其微观结构,可将其他物质有效的粘合在一起,还可以提高整体的使用寿命,因其具有一定的抗紫外线,抗氧化性。(The invention relates to a novel antiviral PU protective garment, which is made of modified PU, wherein the surface of the modified PU is provided with a bactericide, and the bactericide comprises nano silver, nano zinc oxide, nano copper sulfate, nano silicon dioxide and an auxiliary agent; the degerming agent is sprayed on the surface of PU protective clothing, so that the clothing has good antibacterial effect; the nano silver is a very common nano bactericide, the fine nano zinc oxide particles also have a good antibacterial effect, and the fine nano zinc oxide particles can be firmly bonded together, so that when the bactericide is sprayed on the surface of a garment, a layer of antibacterial protective film can be formed on the surface of the garment, the performance is stable, and the garment can be washed for a plurality of times in high-temperature water; in addition, copper ions are also a good bactericide, and the nano silicon dioxide can effectively bond other substances together due to the microstructure thereof, can also prolong the service life of the whole body, and has certain ultraviolet resistance and oxidation resistance.)

1. A novel antiviral PU protective clothing is characterized in that: the modified PU is prepared from modified PU, the surface of the modified PU is provided with a degerming agent, and the degerming agent comprises nano silver, nano zinc oxide, nano copper sulfate, nano silicon dioxide and an auxiliary agent.

2. The novel antiviral PU protective clothing according to claim 1, wherein: the auxiliary agent comprises a surfactant, a fluid solvent, montmorillonite, an organic cross-linking agent and organic fibers.

3. The novel antiviral PU protective clothing according to claim 2, wherein: the organic fiber adopts an organic compound containing carboxyl or sulfonic group, and the organic cross-linking agent adopts one or more of glycerol, organic silicon, polyalcohol and glycidyl ether.

4. The novel antiviral PU protective clothing according to claim 1, wherein said auxiliary agents comprise

3-5 parts of surfactant

10-20 parts of fluid solvent

5-15 parts of montmorillonite

1-5 parts of organic cross-linking agent

5-10 parts of organic fiber.

5. The novel antiviral PU protective garment according to claim 1, wherein the antibacterial agent comprises

10-20 parts of nano silver

10-20 parts of nano zinc oxide

5-12 parts of nano copper sulfate

30-50 parts of nano silicon dioxide

And 1-15 parts of an auxiliary agent.

6. The novel antiviral PU protective garment according to claim 1, wherein, the antiviral PU protective garment comprises the following preparation steps:

step 1: mixing graphene powder with distilled water, dropwise adding an aluminum sulfate solution, stirring for 1-2 hours, filtering out a precipitate, and drying; adding polyethylene glycol electrolyte dispersion agent into the dried precipitate, stirring and washing, and filtering out the precipitate to obtain precipitate A;

step 2: uniformly mixing the precipitate A obtained in the step 1 with polyether polyol, dibutyltin dilaurate and dimethylformamide, and then stirring and heating to obtain polyurethane resin;

and step 3: atomizing and spraying the bactericide in the polyurethane resin to form antibacterial polyurethane resin;

step 4: taking a PU leather forming base material plate, uniformly coating the antibacterial polyurethane resin prepared in the step 3, immersing the antibacterial polyurethane resin into a dimethyl formamide solution for solidification, and finally taking out the PU leather forming base material plate, and sequentially washing and drying;

and 5: and (3) uniformly paving the nano silver wires on the surface of the PU leather molded in the step (3), brushing the antibacterial polyurethane resin in the step (2) on the surface, immersing the antibacterial polyurethane resin in a dimethylformamide solution for solidification, and finally taking out the antibacterial polyurethane resin, washing with water and drying sequentially to obtain the PU leather.

7. The novel antiviral PU protective clothing according to claim 5, wherein the degerming agent comprises the following preparation steps:

step 1: stirring and mixing nano silver, nano zinc oxide, nano copper sulfate and nano silicon dioxide according to a proportion, beating into powder, adding distilled water, and uniformly stirring;

step 2: preparing the organic fibers into the nanofibers by adopting a melt blending phase separation method;

and step 3: mixing the nano-fibers obtained in the step 2 with distilled water, adding an organic cross-linking agent, and uniformly stirring;

and 4, step 4: adding sulfur amino acid-montmorillonite into the blended solution in the step 1, performing microwave irradiation for 5-30 minutes to accelerate the reaction process, and then performing ultraviolet irradiation for 20-40 hours, wherein the suspension of the lower layer is taken out after continuous stirring;

and 5: mixing the nano-fibers prepared in the step 2 into a fluid solvent, and adding a surfactant to uniformly disperse the nano-fibers; and 4, dropwise pouring the lower layer suspension obtained in the step 4 into the mixed solution to prepare the finished product degerming agent.

8. The novel antiviral PU protective clothing according to claim 6, wherein: in the step 5 of the preparation method of the antiviral PU protective clothing, the nano silver is uniformly laid into a net shape.

9. The novel antiviral PU protective clothing according to claim 7, wherein: the sulfur amino acid-montmorillonite is obtained by mixing montmorillonite with distilled water, adding into aqueous solution containing sulfur amino acid group, heating to 50-85 deg.C, stirring for 2-5 hr, precipitating, and drying.

Technical Field

The invention relates to protective clothing, in particular to novel antiviral PU protective clothing.

Background

Since the discovery of new coronaviruses, how to treat and protect the coronaviruses becomes a primary problem, researches show that the main transmission route of the new coronaviruses is respiratory droplet transmission and contact transmission.

Droplet propagation mainly comprises two types, namely direct propagation and aerosol propagation; direct transmission refers to infection caused by sneezing, coughing, speaking droplets and direct inhalation of exhaled air in close proximity; aerosol transmission refers to the mixing of droplets in the air to form an aerosol that causes infection after inhalation.

The contact transmission refers to that the spray is on the surface of an article when contacting with pollution, and then contacts with mucous membranes of oral cavity, nasal cavity, eyes and the like to cause infection.

In the process of protecting and treating the new coronavirus, medical care personnel as a combat fighter in the assault battle are key forces for winning the epidemic prevention battle, and the health protection of the medical care personnel is an important link; in this epidemic prevention war, everyone provides tens of thousands of medical protective clothing and medical mask for medical care personnel.

The melt-blown layer in the medical mask can effectively prevent the dispersion of the droplets, and the protective clothing can prevent the droplets from directly dispersing due to the stay on the surface of an object; for the above reasons, both protective clothing and masks are disposable.

The protection of the new coronavirus needs good protection work for every person in the society besides all medical staff; on the other hand, the mask needs to be worn effectively to prevent the transmission of droplets, and the droplets should be prevented from falling on the surface of an article and being transmitted by contact on the surface of clothes, so that the new corona viruses can be eliminated completely only by effective protection in all directions.

However, how to make effective contact and spread becomes a difficult problem, if we also wear the medical protective clothing all the day like the medical care personnel, although a certain effect can be achieved, the cost is too large, and a great burden is easily caused to the lives of people.

Therefore, the novel antiviral protective clothing has good antiviral effect, can effectively prevent the contact and the transmission of new coronavirus, and can be repeatedly used instead of being used for one time like medical protective clothing.

Disclosure of Invention

The invention aims to provide a novel antiviral PU protective garment which has a good protective effect and can be used repeatedly.

The technical purpose of the invention is realized by the following technical scheme: a novel antiviral PU protective garment is made of modified PU, wherein a bactericide is arranged on the surface of the modified PU, and the bactericide comprises nano silver, nano zinc oxide, nano copper sulfate, nano silicon dioxide and an auxiliary agent.

By adopting the technical scheme, the antibacterial agent is sprayed on the surface of the PU protective clothing, so that the clothing has good antibacterial effect; the nano silver is a common nano bactericide, the fine nano zinc oxide particles also have a good antibacterial effect, and the fine nano zinc oxide particles can be firmly bonded together, so that when the bactericide is sprayed on the surface of a garment, a layer of antibacterial protective film can be formed on the surface of the garment, the performance is stable, and the bactericide can be washed for a plurality of times in high-temperature water at 60-80 ℃ for 90-120 times; in addition, copper ions are also a good bactericide, and the nano silicon dioxide is flocculent because of the microstructure, so that concentrated substances can be effectively bonded together, and meanwhile, the substance can prolong the service life of the whole body because of certain ultraviolet resistance and oxidation resistance.

Preferably, the auxiliary agent comprises a surfactant, a fluid solvent, montmorillonite, an organic cross-linking agent and organic fibers.

By adopting the technical scheme, the montmorillonite belongs to 2: 1, each unit cell is composed of two layers of silicon-oxygen tetrahedrons carrying a layer of aluminum-oxygen octahedron, and no hydrogen bond exists between two adjacent crystal layers of the unit cell, and only van der waals force with weaker bonding force exists; the layers can randomly rotate and translate, exchangeable hydrated cations are arranged among the layers, and the antibacterial material has strong adsorption performance and is suitable to be used as a carrier of inorganic and organic cation antibacterial materials; the nano SiO2 particles are used as a doping phase, and the coating is not easy to migrate and separate out, so that the antibacterial material has good antibacterial long-acting property; in addition, the prepared organic nanofiber solution can be uniformly covered on the surface of the PU fabric, and all effective components in the bactericide are flatly laid on the reticular nanofiber net, so that the comprehensive sterilization protection on clothes can be realized.

Preferably, the organic fiber is an organic compound containing a carboxyl group or a sulfonic group, and the organic crosslinking agent is one or more of glycerol, silicones, polyols and glycidyl ether.

Preferably, the adjuvant comprises

3-5 parts of surfactant

10-20 parts of fluid solvent

5-15 parts of montmorillonite

1-5 parts of organic cross-linking agent

5-10 parts of organic fiber.

Preferably, the degerming agent comprises

10-20 parts of nano silver

10-20 parts of nano zinc oxide

5-12 parts of nano copper sulfate

30-50 parts of nano silicon dioxide

And 1-15 parts of an auxiliary agent.

Preferably, the antiviral PU protective clothing comprises the following preparation steps:

step 1: mixing graphene powder with distilled water, dropwise adding an aluminum sulfate solution, stirring for 1-2 hours, filtering out a precipitate, and drying; adding polyethylene glycol electrolyte dispersion agent into the dried precipitate, stirring and washing, and filtering out the precipitate to obtain precipitate A;

step 2: uniformly mixing the precipitate A obtained in the step 1 with polyether polyol, dibutyltin dilaurate and dimethylformamide, and then stirring and heating to obtain polyurethane resin;

and step 3: atomizing and spraying the bactericide in the polyurethane resin to form antibacterial polyurethane resin;

step 4: taking a PU leather forming base material plate, uniformly coating the antibacterial polyurethane resin prepared in the step 3, immersing the antibacterial polyurethane resin into a dimethyl formamide solution for solidification, and finally taking out the PU leather forming base material plate, and sequentially washing and drying;

and 5: and (3) uniformly paving the nano silver wires on the surface of the PU leather molded in the step (3), brushing the antibacterial polyurethane resin in the step (2) on the surface, immersing the antibacterial polyurethane resin in a dimethylformamide solution for solidification, and finally taking out the antibacterial polyurethane resin, washing with water and drying sequentially to obtain the PU leather.

By adopting the technical scheme, the graphene powder is dispersed and added in the PU fabric, so that the PU fabric has certain wear resistance, in addition, the use amount of the graphene powder is adjusted, the surface of the PU fabric can be atomized, the bacteria remover can be better attached to the surface of the PU fabric, and in addition, the graphene is a conductive substance and has certain conductivity; the nanometer silver wires are matched with the PU fabric surface, when the bacteria removing agent is sprayed on the PU fabric surface, the nanometer copper sulfate can be combined with air to form hydrated copper sulfate, so that the clothes surface is kept dry, and as is known, germs, bacteria and the like are more favorable for a humid and warm environment, so that the dry clothes can reduce the attachment and proliferation of mold; when slight current is supplied to the PU fabric, water in the hydrated copper sulfate is ionized to form a small amount of hydrogen ions and hydroxyl groups, the hydroxyl groups can inhibit the growth of mould, the protein of the mould can be woven, and the ionized hydrogen ions can also effectively kill germs; therefore, after the clothes are used for a period of time, micro-current can be introduced to the surface of the clothes to restore hydrated copper sulfate into copper sulfate, and the hydrogen ions and hydroxyl radicals ionized by the second step can realize one-time thorough surface sterilization and cleaning on the clothes.

Preferably, the degerming agent comprises the following preparation steps:

step 1: stirring and mixing nano silver, nano zinc oxide, nano copper sulfate and nano silicon dioxide according to a proportion, beating into powder, adding distilled water, and uniformly stirring;

step 2: preparing the organic fibers into the nanofibers by adopting a melt blending phase separation method;

and step 3: mixing the nano-fibers obtained in the step 2 with distilled water, adding an organic cross-linking agent, and uniformly stirring;

and 4, step 4: adding sulfur amino acid-montmorillonite into the blended solution in the step 1, performing microwave irradiation for 5-30 minutes to accelerate the reaction process, and then performing ultraviolet irradiation for 20-40 hours, wherein the suspension of the lower layer is taken out after continuous stirring;

and 5: mixing the nano-fibers prepared in the step 2 into a fluid solvent, and adding a surfactant to uniformly disperse the nano-fibers; and 4, dropwise pouring the lower layer suspension obtained in the step 4 into the mixed solution to prepare the finished product degerming agent.

Preferably, in the step 5 of the preparation method of the antiviral PU protective clothing, the nano silver is uniformly laid into a net shape.

Preferably, the sulfur amino acid-montmorillonite is obtained by mixing montmorillonite with distilled water, adding an aqueous solution containing sulfur amino acid groups, heating to 50-85 ℃, continuously stirring for 2-5 hours, precipitating and drying.

By adopting the technical scheme, the original montmorillonite can be used as a carrier to bear the nano antibacterial agent, but the modified montmorillonite obtained by the method can be connected with the effective components in the antibacterial agent through the acting force of chemical bonds, so that the effective components in the antibacterial agent stay for a longer time after being sprayed on the surface of clothes, and then the clothes can be washed in clean water for multiple times, and even can be washed in medium-high temperature water.

In conclusion, the invention has the following beneficial effects:

1. the degerming agent is sprayed on the surface of PU protective clothing, so that the clothing has good antibacterial effect; the nano silver is a common nano bactericide, the fine nano zinc oxide particles also have a good antibacterial effect, and the fine nano zinc oxide particles can be firmly bonded together, so that when the bactericide is sprayed on the surface of a garment, a layer of antibacterial protective film can be formed on the surface of the garment, the performance is stable, and the bactericide can be washed for a plurality of times in high-temperature water at 60-80 ℃ for 90-120 times; in addition, copper ions are also a good bactericide, and the nano silicon dioxide is flocculent due to the microstructure thereof, so that concentrated substances can be effectively bonded together, and meanwhile, the substance can prolong the service life of the whole body due to certain ultraviolet resistance and oxidation resistance;

2. when the PU fabric is prepared, the graphene powder is added in a dispersing manner, so that the PU fabric has certain wear resistance, and in addition, the use amount of the graphene powder is adjusted, so that the surface of the PU material can be atomized, the bacteria removing agent can be better attached to the surface of the PU material, and in addition, the graphene is a conductive substance and has certain conductivity; the nanometer silver wires are matched with the PU fabric surface, when the bacteria removing agent is sprayed on the PU fabric surface, the nanometer copper sulfate can be combined with air to form hydrated copper sulfate, so that the clothes surface is kept dry, and as is known, germs, bacteria and the like are more favorable for a humid and warm environment, so that the dry clothes can reduce the attachment and proliferation of mold; when slight current is supplied to the PU fabric, water in the hydrated copper sulfate is ionized to form a small amount of hydrogen ions and hydroxyl groups, the hydroxyl groups can inhibit the growth of mould, the protein of the mould can be woven, and the ionized hydrogen ions can also effectively kill germs; therefore, after the clothes are used for a period of time, micro-current can be introduced to the surface of the clothes to restore hydrated copper sulfate into copper sulfate, and the hydrogen ions and hydroxyl radicals ionized by the second step can realize one-time thorough surface sterilization and cleaning on the clothes.

3. The original montmorillonite can be used as a carrier to bear the nano antibacterial agent, but the modified montmorillonite obtained by the method can be connected with the effective components in the antibacterial agent through the acting force of chemical bonds, so that the effective components in the antibacterial agent stay for a longer time after being sprayed on the surface of clothes, and then the clothes can be washed in clean water for many times, even in medium-high temperature water; the nano SiO2 particles are used as a doping phase, and the coating is not easy to migrate and separate out, so that the antibacterial material has good antibacterial long-acting property; in addition, the prepared organic nanofiber solution can be uniformly covered on the surface of the PU fabric, and all effective components in the bactericide are flatly laid on the reticular nanofiber net, so that the comprehensive sterilization protection on clothes can be realized.

Detailed Description

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Example (b):

a novel antiviral PU protective garment comprises the following preparation steps:

step 1: mixing graphene powder with distilled water, dropwise adding an aluminum sulfate solution, stirring for 1-2 hours, filtering out a precipitate, and drying; adding polyethylene glycol electrolyte dispersion agent into the dried precipitate, stirring and washing, and filtering out the precipitate to obtain precipitate A;

step 2: uniformly mixing the precipitate A obtained in the step 1 with polyether polyol, dibutyltin dilaurate and dimethylformamide, and then stirring and heating to obtain polyurethane resin;

and step 3: atomizing and spraying the bactericide in the polyurethane resin to form antibacterial polyurethane resin;

step 4: taking a PU leather forming base material plate, uniformly coating the antibacterial polyurethane resin prepared in the step 3, immersing the antibacterial polyurethane resin into a dimethyl formamide solution for solidification, and finally taking out the PU leather forming base material plate, and sequentially washing and drying;

and 5: and (3) uniformly paving the nano silver wires on the surface of the PU leather molded in the step (3), brushing the antibacterial polyurethane resin in the step (2) on the surface, immersing the antibacterial polyurethane resin in a dimethylformamide solution for solidification, and finally taking out the antibacterial polyurethane resin, washing with water and drying sequentially to obtain the PU leather.

In the step 5, the nano silver is uniformly laid into a net shape.

The degerming agent comprises nano silver, nano zinc oxide, nano copper sulfate, nano silicon dioxide and an auxiliary agent; the auxiliary agent comprises surfactant, fluid solvent, montmorillonite, organic cross-linking agent and organic fiber.

The organic fiber adopts an organic compound containing carboxyl or sulfonic group, and the organic cross-linking agent adopts one or more of glycerol, organic silicon, polyalcohol and glycidyl ether.

The degerming agent comprises the following preparation steps:

step 1: stirring and mixing nano silver, nano zinc oxide, nano copper sulfate and nano silicon dioxide according to a proportion, beating into powder, adding distilled water, and uniformly stirring;

step 2: preparing the organic fibers into the nanofibers by adopting a melt blending phase separation method;

and step 3: mixing the nano-fibers obtained in the step 2 with distilled water, adding an organic cross-linking agent, and uniformly stirring;

and 4, step 4: mixing montmorillonite with distilled water, adding water solution containing amino acid groups, heating to 50-85 ℃, continuously stirring for 2-5 hours, and then precipitating and drying to obtain the sulfur amino acid-montmorillonite; adding the mixture into the blending solution obtained in the step 1, carrying out microwave irradiation for 5-30 minutes to accelerate the reaction process, then carrying out ultraviolet irradiation for 20-40 hours, and taking out the lower-layer suspension after continuously stirring;

and 5: mixing the nano-fibers prepared in the step 2 into a fluid solvent, and adding a surfactant to uniformly disperse the nano-fibers; and 4, dropwise pouring the lower layer suspension obtained in the step 4 into the mixed solution to obtain the finished product degerming agent.

The contents of all substances in the degerming agents of the embodiments 1 to 5 are different, and the contents are shown in the following table:

table 1:

	example 1	Example 2	Example 3	Example 4	Example 5
						Nano silver	10	13	15	18	20
Nano zinc oxide	10	12	16	19	20
						Nano copper sulfate	5	7	9	10	12
Nano silicon dioxide	30	35	40	15	50
						Auxiliary agent	1	3	6	11	15

In examples 1 to 5, the content of each substance in the auxiliary was the same.

In examples 6 to 10, the proportions of nano silver, nano zinc oxide, nano copper sulfate, nano silicon dioxide and the assistant are the same, and the contents of the various substances in the assistant are only changed, and the contents of the substances in the assistant are detailed in the following table 2:

table 2:

	example 6	Example 7	Example 8	Example 9	Example 10
						Surface active agent	3	4	4	4	5
Fluid solvent	10	13	15	18	20
						Montmorillonite clay	5	8	10	13	15
Organic cross-linking agent	1	2	3	4	5
						Organic fiber	5	7	8	9	10

The PU facing of examples 1-10 was washed several times in 85 ℃ clean water, and the metal ion content (Cu/Ag) of the surface was recorded and reported in table 3 below:

table 3:

number of washes	Density of metal ions	Number of washes	Density of metal ions
				0	100%	20	85%
1	99% (infinitely close to 100%)	40	70%
				10	92%	80	50%

The metal ion density was recorded as 1 without washing, and then the metal ion content was measured in percent.

The sterilization performance and the protein adsorption performance in examples 1 to 10 were tested and recorded in the following table 4, wherein the colonies were pseudomonas defectively and the protein was bovine serum albumin;

table 4:

	bacteria removal rate	Protein adsorption Rate		Bacteria removal rate	Protein adsorption Rate
						Example 1	100%	＜0.5%	Example 6	100%	＜0.5%
Example 2	100%	＜0.5%	Example 7	100%	＜0.5%
						Example 3	100%	＜0.5%	Example 8	100%	＜0.5%
Example 4	100%	＜0.5%	Example 9	100%	＜0.5%
						Example 5	100%	＜0.5%	Example 10	100%	＜0.5%

In summary, the following steps:

the antiviral PU protective clothes in the examples 1 to 10 have good antibacterial and antivirus effects, and still have certain antibacterial and antivirus effects after being repeatedly cleaned in high-temperature clean water.