A method for preparing a strong and tough gel coating on the surface of a polymer material

A strong and tough gel coating is constructed on the surface of polymer materials by combining a good solvent swelling method with a UV photoinitiator. This solves the problems of difficult coating and insufficient performance of traditional hydrogel coatings on polymer materials, and achieves efficient interfacial bonding and improved wear resistance. It is suitable for a variety of polymer matrices.

CN122726480APending Publication Date: 2026-09-11DONGHUA UNIV
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Patent Information

Application Number
CN202610906510.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-23
Publication Date
2026-09-11

AI Technical Summary

Technical Problem

Traditional hydrogel coatings are difficult to apply to polymer material surfaces, have insufficient interfacial bonding strength, and poor wear resistance and fatigue resistance, which limits their application in medical devices, soft robots, and antifouling and drag reduction.

Method used

A good solvent swelling method is used to deeply penetrate hydrophilic monomers and complex photoinitiators into the polymer surface. In-situ polymerization initiated by ultraviolet light forms a semi-interpenetrating network structure. Combining the mechanical strength of the polymer substrate and the lubricity of the hydrogel, a strong and tough gel coating is formed.

Benefits of technology

It achieves one-piece molding of polymer material surfaces, synergistic performance improvement, simplifies process flow, enhances interfacial bonding, improves wear resistance and fatigue resistance, and is adaptable to a variety of polymer matrices.

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Abstract

The application relates to the technical field of surface engineering and polymer material modification, and discloses a preparation method for constructing a strong and tough gel coating on the surface of a polymer material, which comprises the following steps: preparing a soaking solution by mixing polyethylene glycol diacrylate, acrylamide, a first ultraviolet light initiator, a second ultraviolet light initiator, deionized water and a good solvent; soaking a polymer substrate in the soaking solution, taking out the polymer substrate, irradiating the polymer substrate with ultraviolet light to solidify the polymer substrate, washing the polymer substrate, and absorbing water to expand the polymer substrate, so that the polymer material with a strong and tough gel coating on the surface is obtained. The application can be used for different types of polymer substrates, and the coating thickness, wettability and mechanical properties can be accurately controlled by adjusting parameters such as soaking time and monomer concentration, so that different application requirements can be met. The polymer substrate provides excellent mechanical strength and sufficient stability, the gel layer provides excellent hydrophilicity, lubricity and biocompatibility, and the gel layer and the substrate are mutually cooperative, so that the overall performance is improved.
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