阅读说明：本技术 一种长效安全抗菌消毒剂 (Long-acting safe antibacterial disinfectant ) 是由 贾赫成 贾天法 于 2021-02-07 设计创作，主要内容包括：本发明公开了一种长效安全抗菌消毒剂,由超长纳米银线水分散液、胶粘剂、分散剂混合而成。它具有抗菌消毒范围广、对身体无害、效率高、维持时间长、无耐药性等特点。适用于各种环境和用品的抗菌消毒,如汽车、火车、飞机、电梯等交通运输设备；商场、饭店宾馆、办公场所、居住环境等场所,各种工作生活用品如服装、床上用品、鞋袜、沙发、地毯、窗帘、电脑、桌椅等的抗菌消毒。(The invention discloses a long-acting safe antibacterial disinfectant, which is prepared by mixing an ultra-long nano silver wire water dispersion, an adhesive and a dispersing agent. It has the characteristics of wide antibacterial and disinfection range, no harm to human body, high efficiency, long maintenance time, no drug resistance and the like. The antibacterial disinfectant is suitable for the antibacterial disinfection of various environments and articles, such as transportation equipment of automobiles, trains, airplanes, elevators and the like; market, hotel, office, living environment, and other places, and various articles for work and life such as clothing, bedding, shoes and socks, sofa, carpet, curtain, computer, table and chair.)

1. The long-acting safe antibacterial disinfectant is characterized by comprising the following components in percentage by weight:

ultra-long nano silver wire: 0.001% to 2%;

adhesive: (aqueous polyurethane) 0.1% to 5%;

dispersing agent: (polyvinylpyrrolidone) 0.01% to 1%;

the remainder being water.

2. The ultra-long silver nanowires of claim 1, having a diameter of 20 nm to 100 nm and a length of 50 to 200 μm.

3. The adhesive (waterborne polyurethane) according to claim 1 is characterized by its adhesive property, which can increase the adhesion of the ultra-long silver nanowires on the surface of an object when in use, and also comprises other types of adhesives such as sodium hydroxymethyl cellulose, poly dimethyl diallyl ammonium chloride, etc.

4. The dispersant (polyvinylpyrrolidone) according to claim 1, characterized in that it can reduce agglomeration of ultra-long silver nanowires, increase stability, and also includes other types of dispersants such as polyethylene glycol, cetyl ammonium bromide, etc.

Technical Field

The invention relates to a long-acting safe antibacterial disinfectant, belonging to the field of medical supplies.

Background

The application of metal silver for antibiosis has a history of thousands of years, silver is a powerful natural antibiosis and bactericide, scientific research shows that more than 650 kinds of viruses and bacteria can be killed by silver ions, and about six kinds of pathogens can be killed by common antibiotics. The silver ion can be slowly released by the contact of the metal silver with water, carbon dioxide and oxygen, and the silver ion can generate chemical reaction with SH groups in protein, so that the silver ion loses activity and blocks normal metabolism, thereby killing bacteria and viruses. The reacted silver ions can be dissociated out to carry out the reaction again, and the consumption of the metallic silver is slow. The nano silver has higher surface area and higher antibacterial activity, and the cost performance is higher because the mass distribution of the nano silver is very little. Silver ions can not generate drug resistance, and can ensure stable and long-acting antibacterial effect.

However, the nano silver particles and silver ions are too small to permeate into human skin. Silver is a heavy metal, and can slowly accumulate in bones and livers after permeating into human bodies, can generate toxicity to lung, nerves and skin cells, can permeate into brains and spread to the whole body along with blood circulation to cause harm to human health, and the safety value of silver to human bodies is regulated to be 0.05PPm by the world health organization. Because of the safety problem of the antibacterial disinfectant containing the nano silver particles and the silver ions, the development of the antibacterial agent is restricted by various safety technical standards. Therefore, the safety is a problem which needs to be solved urgently.

Disclosure of Invention

The invention aims to provide a long-acting and safe antibacterial disinfectant. Its antibacterial and disinfecting action can be maintained for several years or even several decades, and it is harmless to human body, and its antibacterial range is wide and efficiency is high.

In order to achieve the above purpose, the invention selects the material with the diameter of 20 to 100 nanometers, the length of 50 to 200 micrometers, the length-diameter ratio of 1000: 1 or more of ultra-long nano silver wire aqueous dispersion. Because the average diameter of the human body pores is about 50 microns, the length of the ultra-long nano silver wires exceeds the diameter of the human body pores, and in addition, the pores contain secretions such as grease and the like, the ultra-long nano silver wires are not easy to permeate into the human body skin and cannot cause damage to the human body. When the ultra-long nano silver wire is contacted with water and air, trace silver ions can be slowly released, the concentration of the silver ions is generally less than 0.05PPm, and the safety of a human body can be ensured. The binding of silver ions to sulfhydryl groups in the metabolic enzymes of pathogens inactivates the enzymes and the pathogens die because they cannot metabolize.

Because the adhesive force of the ultra-long nano silver wire on the surface of a general object is small, the adhesive force of the ultra-long nano silver wire on the surface of the object can be increased by adding the adhesive (waterborne polyurethane). Other types of adhesives such as sodium carboxymethylcellulose, polydimethyldiallylammonium chloride, and the like may also be used.

The ultra-long nano silver wire is easy to agglomerate, and the addition of a dispersing agent (polyvinylpyrrolidone) can reduce the generation of agglomerates. Other types of dispersants such as polyethylene glycol, cetyl ammonium bromide, and the like may also be used.

The mass percentages of the components are as follows: 0.001% -2% of the ultra-long nano silver wire; 0.2-5% of adhesive (waterborne polyurethane); 0.2% -2% of dispersing agent (such as polyvinylpyrrolidone); the remainder being water.

The invention has the advantages that: 1. silver ions and nano-silver particles are easy to permeate into the skin of a human body to cause damage to the human body, and the ultra-long nano-silver wire is difficult to permeate into the skin of the human body to cause no damage to the human body.

2. The silver ions generated by the ultra-long nano silver wire are very trace, and the reacted silver ions can be dissociated out for reaction again, so that the consumption of silver is extremely slow, and the antibacterial disinfection can be maintained for a long time, which can reach several years or dozens of years, until the nano silver wire is completely decomposed.

3. Due to the addition of the adhesive, the adhesive force of the ultralong nano silver wire on the surface of an object can be increased, so that the antibacterial disinfectant is more resistant to rubbing and washing after being used, and can be prevented from falling too early.

4. Wide antibacterial and sterilizing range, high efficiency, no selectivity and no drug resistance.

5. Because of the nano-grade silver wire, the using amount of silver is less, the use cost is reduced, and the cost performance is high.

The invention is further illustrated with reference to examples:

preparing various raw materials: 50 g of ultra-long nano silver wire aqueous dispersion with the mass percent of 0.02 percent; 0.55 g of waterborne polyurethane; 0.05 g of polyvinylpyrrolidone; 49.4 grams of water.

Firstly, 0.55 g of waterborne polyurethane is added into 50 g of ultra-long nano silver wire aqueous dispersion, stirred for 10 to 30 minutes, then 0.05 g of polyvinylpyrrolidone is added, and finally 44.4 g of water is added, and stirred uniformly. The mixed liquid is filled into a spraying tank to prepare the one-tank antibacterial disinfectant for sterilization and disinfection in various occasions.