Method for preparing antibacterial material by use of nano silver

Abstract

The invention discloses a method for preparing an antibacterial material by use of nano silver, and relates to a preparation method of the antibacterial material. The preparation method comprises the following steps: (1) adding a prepared 2.5g / L nitrate solution into a formaldehyde solution added with 10% of a reducing agent, adding catalyst organic base triethylamine and protective agent thiosalicylic acid for mixing for reaction; (2) adding excess triethylamine into the reacted solution of the step (1) to make the solution more stable and obtain a nano silver solution with the nano silver average particle size being less than 10nm; (3) preparing a 2-3g / L nano silver mixed solution, using a sprayer to spray onto a medical fabric, and drying; (4) filling the medical fabric sprayed with the nano silver with absorbent cotton to make the bactericidal effect better. The nano silver medical product prepared by the method has strong antibacterial, bactericidal effect and broad spectrum antibacterial activity, and is free of drug resistance and high in safety, and the bactericidal effect is greatly enhanced.

Description

technical field [0001] The invention relates to a method for making an antibacterial material, in particular to a method for making an antibacterial material by using nano silver. Background technique [0002] The conductivity of silver ranks first among all metals, but the nano-silver particles are ultra-fine, and the silver atoms tend to be in the outer layer of the particles, so the conductivity of the nano-silver particles is better. At present, various antibacterial products for medical, sanitation, daily use and industrial purposes using nano-silver antibacterial nonwovens as raw materials have been launched one after another. There are many methods of manufacturing nano-silver particles, such as physical and chemical methods: including high-voltage magnetron sputtering method, laser separation method, photon quantum reduction method, sonication method; chemical reduction method: silver ammonia complex ion reduction method, electrochemical reduction method , Reverse m...

AI Technical Summary

Problems solved by technology

However, the adsorption of these antibacterial materials is not strong, and the antibacterial properties of nano-silver will be reduced after being combined with water, which greatly reduces its antibacterial effect.