A method for preparing a high-hardness, transparent, fluorine-free liquid-repellent coating

By constructing a cross-linked network using low-cost raw materials such as hydroxyl silicone oil, a high-hardness, transparent, fluorine-free liquid-repellent coating was prepared, solving the problems of high cost, poor environmental performance, and low mechanical strength in existing technologies, and realizing the application of environmentally friendly and transparent liquid-repellent coatings.

CN118085683BActive Publication Date: 2025-11-21FUZHOU UNIV
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Patent Information

Application Number
CN202410328334.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-03-21
Publication Date
2025-11-21
Estimated Expiration
2044-03-21

AI Technical Summary

Technical Problem

Existing high-hardness transparent liquid-repellent coating technologies suffer from high costs, cumbersome processes, environmental unfriendliness, and low mechanical strength, making them difficult to widely apply in the field of transparent protective materials.

Method used

Using low-cost raw materials such as hydroxyl silicone oil, polyether-modified silicone oil, epoxy resin, and melamine-formaldehyde resin, a cross-linking network is constructed through a simple mixing and heating curing method to prepare a high-hardness, transparent, fluorine-free liquid-repellent coating.

Benefits of technology

It achieves a low-cost, environmentally friendly, high-hardness, and transparent liquid-repellent coating with excellent anti-fouling and self-cleaning capabilities, suitable for substrates such as glass.

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Abstract

The application discloses a preparation method of high-hardness, transparent and fluorine-free liquid-repellent coating and belongs to the technical field of high polymer functional materials and polymer coating. Hydroxyl silicone oil, epoxy resin, isocyanate derivative, melamine formaldehyde resin and polyether modified silicone oil are fully dissolved in an organic solvent, coated on a substrate and heated and solidified in one step to obtain the high-hardness, transparent and fluorine-free liquid-repellent coating. The coating prepared by the application is transparent, liquid-repellent and has excellent hardness and can be constructed on the substrate by means of drop coating, dip coating and spin coating. The raw materials are cheap and easy to obtain, the preparation process is fluorine-free and controllable, and the application has wide application value.
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