A kind of nano-reinforced environment-friendly organic silicon antifouling and antibacterial coating and its preparation method and application

Abstract

The invention discloses a nano-reinforced environment-friendly organic silicon antifouling and antibacterial coating. According to the total weight of the raw material as 100%, the raw material composition includes: polysiloxane 10-50%; quaternary ammonium salt fluorosilicon polymer 1 ~20%; catalyst 0.05~0.5%; filler 0.5~20%; organic solvent 40~85%; 1 with R 3 independently selected from H or CH 3 , R 2 from C 4 f 9 、C 6 f 13 、C 10 f 21 , N(CH 3 ) SO 2 C 4 f 9 or N(CH 3 ) SO 2 C 6 f 13 , R 4 from C 12 h 25 、C 16 h 33 or C 6 h 5 CH 2 , X is selected from Cl or Br. The organic silicon antifouling and antibacterial coating prepared by the invention has excellent antifouling performance, is environmentally friendly and has high mechanical strength, and can be used in marine antifouling and biomedical fields.

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...

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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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