Rare-earth composite antibacterial agent and application thereof

Abstract

The invention discloses a novel rare earth-containing composite antibacterial agent and application thereof. The rare-earth composite antibacterial agent comprises more than one lanthanoid inorganic compound and more than one antibacterial ionic compound and also comprises a carrier further, wherein the carrier comprises more than one inorganic lamellar material and / or more than one porous material; and the lanthanoid inorganic compounds and the antibacterial ionic compounds are loaded on the inorganic lamellar materials and / or the porous materials. The prepared rare-earth composite antibacterial agent has the characteristics of high color change resistance, heat resistance and antibacterial property and lasting antibiosis, and does not influence the mechanical property and heat resistance of materials when applied to the high polymer materials such as plastics and the like.

Description

technical field [0001] The invention relates to a rare earth composite antibacterial agent, in particular, the invention relates to a rare earth composite antibacterial agent used for plastics, rubber, coatings and the like. Background technique [0002] Antibacterial plastics are a branch of antibacterial materials and a class of materials with antibacterial functions, usually referring to adding antibacterial agents to plastics to make the plastic itself antibacterial. It can inhibit or kill the bacteria stained on the plastic within a certain period of time. Compared with conventional chemical and physical methods, the use of antibacterial plastics has a long sterilization time, which is economical and convenient. [0003] Research on antibacterial plastics began in the 1980s. In recent years, the research and application of antibacterial plastics in developed countries such as Japan, the United States and Western Europe have made great progress. Especially in Japan, an...

AI Technical Summary

Problems solved by technology

[0012] In short, silver-based antibacterial materials are currently the most common inorganic antibacterial materials, but these antibacterial agents loaded with silver ions have several major disadvantages: First, the precious metal silver as an antibacterial component will lead to the production cost of antibacterial agents If it is too high, it will affect its popularization and use in a wide range; second, the silver-loaded antibacterial agent has poor weather resistance, the chemical properties of silver ions are active, and it is sensitive to heat and light, especially the antibacterial agent is easy to turn black after being irradiated by ultraviolet rays. Appearance of white or light-colored products

Under ultraviolet light, alkaline or heating conditions, its antibacterial products such as various plastic products and building materials are prone to discoloration and blackening, and the discoloration problem seriously restricts its application in products

Third, it has almost no antibacterial effect on mold and fungus

[0013] In addition, the current usual antibacterial agent product form is often in the natural state of an antibacterial material, generally powder, powder microcrystal or liquid, and antibacterial agents designed with special structures in practical applications are relatively rare

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