Sprayable hydrogel coating and preparation method of coating thereof

Abstract

The invention discloses a sprayable hydrogel coating and a preparation method of the coating. The preparation method is characterized by comprising the following steps: S1, performing synthesis of an ultraviolet polymerization viscous solution: mixing a solvent, a monomer, a cross-linking agent and an initiator in a reaction container to form a mixed reaction solution, stirring and carrying out free radical polymerization reaction under the condition of ultraviolet illumination to obtain the ultraviolet polymerization viscous solution; s2, performing solution dilution: diluting the ultraviolet polymerization viscous solution by adding ethanol to obtain a dilute solution which can be directly used for spraying; s3, adjusting the pH value of the dilute solution which can be directly used for spraying to obtain a solution C; and S4, spraying and curing. The hydrogel coating prepared from the coating obtained by the method has the advantages of mild preparation conditions, no environmental pollution, capability of generating chemical bonding on various solid surfaces and the like; and the method for spraying the hydrogel coating is feasible, the preservation time is long, and the hydrogel coating can be sprayed on the surfaces of various substrate materials and can be stably bonded with a substrate.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a sprayable hydrogel coating and a preparation method of the coating. Background technique [0002] Hydrogel is a kind of hydrophilic soft matter material formed by filling the polymer space network with aqueous solution. Due to their excellent biocompatibility, flexibility, and hydrophilic lubricity, hydrogel materials have broad application prospects in areas such as drug delivery, sensors, soft robots, medical devices, and marine antifouling coatings. In the application research of hydrogel materials, combining hydrogel as a coating material with various traditional solids, such as: glass, metal, ceramics, rubber and plastics, can give the characteristics of the above hydrogel to traditional solids Surface, promote the in-depth application of traditional materials in the fields of biomedicine and engineering. [0003] The diversification of application fields puts forward h...

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Problems solved by technology

This method obtains the hydrogel coating by directly coating the prepared gel coating on the solid surface, but because the viscosity of the hydrogel coating is too high, it is only suitable for preparing the hydrogel coating by brushing, dipping, etc. Floor

[0006] The above two methods are difficult to prepare uniform hydrogel coatings on solid surfaces with complex topography (such as hollows, gaps, etc.)

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