Preparation method of nano-silver antibacterial plastic

Abstract

The invention provides a preparation method of a nano-silver antibacterial plastic. The preparation method comprises following steps: firstly, ion substitution is adopted to load a microporous material nano zeolite carrier with antibacterial silver ions or other metallic oxides so as to obtain a nano silver zeolite composite antibacterial material; the nano silver zeolite composite antibacterial material is subjected to surface modification with a surfactant; the modified nano silver zeolite composite antibacterial material is mixed with a powdery polypropylene matrix at a mass ratio of 1:5, an accessory ingredient and a dispersing agent are added, and vibrating milling is adopted for dispersion treatment so as to obtain a nano silver zeolite composite antibacterial plastic masterbatch; and at last the nano silver zeolite composite antibacterial plastic masterbatch is uniformly mixed with polypropylene plastic at a mass ratio of 1:10, and an obtained mixture is delivered into an injection molding machine for injection molding so as to obtain the nano-silver antibacterial plastic. The nano-silver antibacterial plastic possesses broad spectrum, high efficiency, and long lasting antibacterial performance, and excellent slow release performance.

Description

technical field [0001] The invention relates to the technical field of antibacterial plastics, in particular to a preparation method of nano silver antibacterial plastics. Background technique [0002] There are many plastic products in daily life, such as food packaging bags, trash cans, plastic casings of household appliances, toilet facilities, kitchen utensils, etc., which are easy to breed bacteria and become the medium of disease transmission. Therefore, it is very important to carry out antibacterial health care processing on such materials Significance. Antibacterial materials were originally applied to antibacterial fibers. In the 1980s, antibacterial plastics began to appear in developed countries such as Japan, Europe and the United States. Now antibacterial plastics have begun to be used in large household appliances, communication equipment, automobile manufacturing, etc. Among them, inorganic antibacterial agents modified by nanotechnology are the most popular...

AI Technical Summary

Problems solved by technology

Due to the small particle size, large specific surface area, and large surface energy of nano-silver zeolite composite antibacterial agents, particle agglomeration is very easy to occur, which seriously restricts its application in antibacterial products.