Preparation of nano-composite bactericidal and antiviral material and application thereof

Abstract

The invention discloses preparation of a nano-composite bactericidal and antiviral material and an application thereof, and belongs to the technical field of antivirus. The material is prepared from the following components: nano-silver particles, nano-cuprous oxide particles, a traditional Chinese medicine extracting solution, polymer nano-particles, a stable dispersing agent, a humectant and water. The material has the characteristics of no toxicity, harmlessness, environmental protection, strong durability, broad-spectrum / efficient sterilization, virus resistance and the like, is convenientand simple to use, can be directly sprayed, can quickly kill various bacteria, viruses and the like in various outdoor and indoor spaces and articles, and inhibits the spreading problem of epidemic viruses confronted by human beings at present.

Description

technical field [0001] The invention belongs to the field of anti-virus technology, and in particular relates to the preparation and application of a nanocomposite bactericidal anti-virus material. Background technique [0002] At present, in the face of the novel coronavirus (COVID-19) raging around the world, human life is facing a great threat. In view of the fact that the coronavirus can spread by adsorbing on particles such as aerosols and the surface of objects, and the survival time of the virus after attachment can reach more than a dozen or even dozens of hours, the current society urgently needs a method that can quickly and effectively kill the virus attached to clothing, vehicles, etc. Various bacteria and viruses (especially new coronaviruses) on public spaces such as furniture, tables and chairs, and indoor items to prevent further spread and spread of the virus. [0003] Ultraviolet rays and other methods of killing bacteria and anti-virus are effective, but ...

AI Technical Summary

Problems solved by technology

The method requires double-injection control, ultrafiltration desalination and other technologies, as well as special agitators, which bring great inconvenience to the preparation of materials.

In addition, the invention does not give specific antibacterial and antiviral data, and the actual antibacterial and antiviral effects need to be investigated

[0008] CN 100500162 C discloses a kind of anticoronavirus agent, and its method is to make antiviral fiber or coating on the carrier such as the polyimide fiber of large size or acrylic paint by carrying silver ion, according to the difference required preparation process of carrier It is also different from the equipment, which brings great inconvenience to the production of the product.

In addition, in the SARS coronavirus inactivation test of the product, the 23.4ug / mL product can only inactivate 25% of the SARS coronavirus, and the antiviral performance needs to be improved

[0009] CN 101633045 B discloses a nano-silver sol and its preparation method and their application. During the preparation of the nano-silver sol, silver salts (such as silver nitrate) are dissolved in ethanol, which will generate Explosive substance silver fulminate, low safety

In addition, the initial particle size of the prepared nano-silver particles was 10-80nm, and the diameter of the nano-silver particles increased to 60-140nm after being placed for 14 days, indicating that the size of the nano-silver particles will increase with the prolongation of the product placement time, and the size of the nano-silver particles The increase will reduce the performance of antibacterial and antiviral

[0010] CN 101213040 A discloses a functional nanomaterial with antibacterial and antiviral activity, which synthesizes antibacterial active cationic Ag + and Cu 2+ and non-metal oxide TiO 2 , ZnO, SiO 2 The nanomaterials are not added to the dispersant during the preparation process, and the nanomaterials are prone to agglomeration, which will affect the antibacterial effect of the material.

Moreover, it needs to be heated at about 100°C for 8-24 hours during the preparation process, and the preparation process is complicated and energy-consuming

In addition, most of the antimicrobial activity logarithms of this material in the antibacterial test have just reached 4, while the national standard is at least 4, and its antibacterial activity needs to be improved

[0011] The above inventions require a lot of equipment, the process is complex and energy-consuming, the product safety is low, and the effect of sterilization and anti-virus is poor. At present, a safe, convenient and efficient sterilization and anti-virus material is still needed in the market to fight against the ravages of bacteria and viruses.

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