Nano coating preparation method and antibiosis nano coating prepared by nano coating

Abstract

The invention reveals a preparation method of a nano coating, which employs plasma discharge for pretreating a substrate, an organic monomer with polymerization capability is introduced in a plasma cavity in a gas form to generate the organic monomer plasma, the polymerization is generated in the plasma cavity to generate the polymer plasma, and polymer plasma is deposited on the substrate surface to form the polymerization deposition of the nano coating. The invention also comprises an antibiosis nano layer prepared by the method of the invention. The nano coating and a substrate material can be combined with firm covalent bond to realize non-pharmacological antibiosis; compared with a traditional antibiosis coating, the antibiosis nano coating has the advantages of low cost and safe usage; the method of the invention can keep most characteristic groups of the organic monomer, and is in favor of design of antibiosis efficacy of the nano coating; and the antibiosis nano coating can keep killing or opposing a plurality of bacteria and mould in a long time, and the antibiosis effect is good, and the antimicrobial spectrum is wide.

Description

Technical field [0001] The present invention involves a preparation method for nano -coating and antibacterial nano -coating obtained by this method, especially a method for using low -temperature plasma polymerization technology to prepare nano -coating and a antibacterial nano -nano -in medical and health field.coating. Background technique [0002] With the improvement of medical level and people's health awareness, antibacterial materials that have a new type of function that kills or inhibit microbial functions and the use of antibacterial coating technology that uses it is increasingly used in the medical field, home supplies, and home use.Electric appliances, food packaging and other fields.There are three major categories of antibacterial coating on the market according to material classification: [0003] The first category is the antibacterial coating of metal compounds. It mainly uses the antibacterial capacity of metal such as silver, copper, zinc and other metals to ...

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Problems solved by technology

[0003] The first type is metal compound antibacterial agent coating, mainly utilizes the antibacterial ability of metals such as silver, copper, zinc and then obtains antibacterial coating, and wherein silver ion coating antibacterial and bactericidal effect is the best, the most commonly used, Chinese patent CN101125970A, CN101073434A and CN102026589A, and U.S. Patents US4340043, US6087549, etc. disclose the technology of preparing coatings with silver ion antibacterial materials, but the general cost of such metal compound coatings is high, and if used for medium and long-term medical interventions, it may cause heavy metals in the human body Poisoning and causing salt deposition in body fluids;

[0004] The second type is an organic antibacterial agent coating, comprising an organic small molecule antibacterial agent coating and a polymer antibacterial agent coating obtained by a conventional chemical polymerization method. Ammonium salt and its derivative antibacterial agent coatings, polymer antibacterial agent coatings such as Chinese patents CN1292806C, CN100346847C, CN100413546 and U.S. Patents US7597903 and US6936345 etc. disclosed natural polymer antibacterial agent coatings such as chitosan and dextran , this type of organic antibacterial agent coating generally has better antibacterial spectrum, and the cost is much lower than that of silver ion coating, but there are still obvious defects: ①The organic small molecule antibacterial agent coating is relatively unstable, which can easily lead to its Small organic molecular compounds decompose and release, thereby reducing the antibacterial performance, it is difficult to meet the medium and long-term antibacterial, and it is difficult to predict whether the products of its decomposition or release will cause harm to the human body. ②Polymer antibacterial agent coating is relatively stable, but because it is generally Manufactured by spraying, dipping, coating, chemical deposition or sol-gel, etc., the bonding force between this type of coating and the base material is weak, and the coating is prone to peeling off during use;

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