Quaternized chitosan-based super-hydrophobic film with micro-nano hierarchical structure and preparation method of quaternized chitosan-based super-hydrophobic film

The invention belongs to the technical field of super-hydrophobic films, and relates to a quaternized chitosan-based super-hydrophobic film with a micro-nano hierarchical structure and a preparation method thereof, and the preparation method comprises the following steps: processing a film laying glass mold with a dot-matrix pit structure; preparing a quaternized chitosan, ramie fiber and lignin film laying mixed precursor solution, and placing the precursor solution in a glass mold for film laying; preparing an epoxy resin solution, and spin-coating an epoxy resin middle layer on the surface of the film by adopting a spin coater; preparing a nano-zinc oxide suspension, spraying the suspension on the surface of the film, and preliminarily curing; and preparing a PDMS solution, spraying the solution on the surface of the film, and performing high-temperature curing to obtain the quaternized chitosan-based super-hydrophobic film with the micro-nano hierarchical structure. The prepared quaternized chitosan-based