Nano antibacterial material preparation method

Abstract

The invention provides a nano antibacterial material preparation method which comprises the following steps: a, mixing polyester polyol and polyether polyol and adding into a reaction kettle to be heated and stirring and cooling to perform dewatering treatment to obtain a first material; b, adding an anti-blocking agent, an organic antibacterial agent and an inorganic antibacterial agent into thefirst material, heating and vacuumizing, then cooling and performing dewatering treatment, guiding into an internal mixer, adding an additive and smelting to obtain a second material; c, mixing a nanosilver zinc composite material, a surface active agent and deionized water and guiding into a material mixing machine and then adding an inorganic nano material and inorganic filler to obtain a thirdmaterial; d, mixing the second material and the third material, adding isocyanate, a chain extender and a lubricant, stirring by utilizing a magnetic stirrer, then guiding into a twin-screw extruderand extrusion molding under the vacuum condition. The prepared nano antibacterial material disclosed by the invention has the advantages of better processability and mechanical property, excellent antibacterial performance, greenness, environmental friendliness and long service life.

Description

technical field [0001] The invention belongs to the technical field of antibacterial materials, and in particular relates to a preparation method of nano antibacterial materials. Background technique [0002] With the acceleration of the pace of modern life and the increase of population mobility, bacteria adhering to and growing on various surfaces, especially medical, sanitation, and public event venues, pose an increasing threat to people's health. In order to kill these bacteria, in addition to frequent cleaning and cleaning methods for items, there are also methods such as using various disinfectants or performing high temperature, high pressure or ultraviolet light, microwave irradiation and other methods for disinfection and sterilization. Not only work is loaded down with trivial details, increases cost, and can't keep for a long time. [0003] Existing antibacterial materials cannot be widely used in some fields with high antibacterial requirements. Although some a...

AI Technical Summary

Problems solved by technology

Not only is the work cumbersome and increases costs, but it cannot be maintained for a long time

[0003] Existing antibacterial materials cannot be widely used in some fields with high antibacterial requirements. Although some antibacterial agents have been added to materials in the prior art, their antibacterial properties are poor, especially for common Escherichia coli and The antibacterial effect of Staphylococcus aureus is poor, and the hardness, toughness and tear strength of the entire material are reduced by adding antibacterial components

The existing technology simply adopts the method of adding antibacterial agents, which sacrifices the physical properties of the main material to a certain extent, and affects the long-term performance of the material