Nano-enhanced environment-friendly organic silicon antifouling antibacterial coating, preparation method and application thereof

Abstract

The invention discloses a nano-enhanced environment-friendly organic silicon antifouling antibacterial coating, which comprises the following raw materials in percentage by total weight of 100%: 10-50% of polysiloxane, 1-20% of a quaternary ammonium salt fluorosilicone polymer, 0.05-0.5% of a catalyst, 0.5-20% of a filler, and 40-85% of an organic solvent, wherein the structural general formula of the quaternary ammonium salt fluorosilicone polymer is defined in the specification, in the formula, R1 and R3 are independently selected from H or CH3, R2 is selected from C4F9, C6F13, C10F21, N(CH3)SO2C4F9 or N(CH3)SO2C6F13, R4 is selected from C12H25, C16H33 or C6H5CH2, and X is selected from Cl or Br. The prepared organic silicon antifouling antibacterial coating has excellent antifouling performance, is environment-friendly, has relatively high mechanical strength, and can be applied to the fields of marine antifouling and biomedical treatment.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a nano-enhanced environment-friendly organic silicon antifouling and antibacterial coating, a preparation method thereof, and applications in marine antifouling and biomedical fields. Background technique [0002] Silicone materials have the advantages of high biocompatibility, low surface energy, non-toxic and tasteless, good physiological inertia, etc., and are widely used in marine antifouling, biomedical, textile, agriculture, construction, food packaging and other fields. However, the surface of organosilicon materials is very easy to grow and reproduce various harmful microorganisms, causing surface pollution and bringing many problems to practical applications. Therefore, it is of great significance to modify polysiloxane materials for antifouling. In order to solve the problem of bacterial contamination on the surface of silicone materials in the fields of bi...

AI Technical Summary

Problems solved by technology

But first of all, among the (meth)acrylate antifouling monomers used, triclosan acrylate has antifouling properties, but at the same time it is biotoxic and bioaccumulative, and a large amount of use will bring potential harm to the ecological environment and human health. Hazard; polyethylene glycol acrylate, polyethylene glycol methacrylate, dimethylaminoethyl acrylate, dimethylaminoethyl methacrylate, carboxybetaine acrylate, carboxybetaine methacrylate The six types of esters have poor antifouling effects; the four substances of benzisothiazolinone acrylate, benzisothiazolinone methacrylate, bromopyrrolenitrile acrylate, and bromopyrrolenitrile methacrylate are due to Its complex synthesis, high price or poor water solubility limit its application; the source of natural capsaicin antifouling agents is limited, and the extraction technology is backward, and it is still in the conceptual stage or experimental stage

Secondly, the elastic modulus of the coating body is very low, and it is easily damaged when it is subjected to mechanical external force, which affects its antifouling effect and shortens its service life. Therefore, it is only suitable for static antifouling. When applied under dynamic conditions, the hull surface The antifouling coating is easily damaged by external force, which affects its antifouling effect

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