Preparation method of antibacterial nano material

Abstract

The invention relates to a preparation method of an antibacterial nano material. The preparation method of the antibacterial nano material comprises the following steps: 1) after heating and stirringan adhesive, dehydrating to obtain a resultant A; 2) after stirring a spherical antiblocking agent, silver oxide, polyhexamethylguanidine stearate and the resultant A, heating and carrying out vacuumtreatment, dehydrating after vacuum treatment, then guiding in a rubber mixing mill and adding N-methyl diethanolamine to obtain a resultant B; 3) after grinding and stirring a nano iron and titaniumdioxide composite material, a surfactant and deionized water, adding copper oxide and limestone, and stirring to obtain a resultant C; and 4) after uniformly stirring the resultant B, the resultant C,2,6-toluene diisocyanate, a hydrophilic chain extender and a salt-forming agent, and carrying out extrusion and forming to obtain the antibacterial nano material. The problem that nano titanium dioxide is easy to agglomerate in the existing prepared antibacterial nano material is obviously avoided, and meanwhile, the prepared antibacterial nano material is excellent in antibacterial property andlong in service life and resists stretching.

Description

technical field [0001] The invention belongs to the field of nanometer materials, in particular to a preparation method of antibacterial nanometer materials. Background technique [0002] Bacteria are closely related to human production and life. Some bacteria in life can induce diseases such as cholera, plague, tetanus, tuberculosis, etc., such as Shigella, which invade human cells and produce toxins in cells, leading to the death of human cells; some bacteria It grows, reproduces, gathers and releases toxins on the surface of the human body. If the toxins produced by bacteria enter the human body, it is likely to induce diseases such as tetanus; there are also some bacteria that, after entering the subcutaneous tissue, will become the medium for spreading erysipelas caused by Streptomyces , these bacteria can survive and reproduce in the human body, and resist the host. When the conditions for the growth and breeding of the host are not met, the bacteria will re-enter anot...

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Problems solved by technology

[0005] However, due to the small diameter and large specific surface energy of nano-titanium dioxide particles, insufficient atomic coordination results in more active centers, which makes nano-titanium dioxide have higher activity. In the process of making nanomaterials, nano-titanium dioxide has higher activity. , easy to combine with other atoms to form aggregates, resulting in uneven distribution of substances in nanomaterials, resulting in reduced antibacterial properties of nanomaterials, and the disadvantage of high cost of nanoparticle preparation

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