Transparent hydrophobic and oleophobic functional coating material and transparent hydrophobic and oleophobic functional coating layer formed thereby

Abstract

The invention provides a transparent hydrophobic and oleophobic functional coating material. The transparent hydrophobic and oleophobic functional coating material is prepared from fluorine-containing resin, silicon dioxide particles and a solvent, wherein the mass concentration of the fluorine-containing resin is 5 to 15%; the mass of the silicon dioxide particles accounts for 1 to 5% of the mass of the fluorine-containing resin; the fluorine-containing resin contains at least one of fluorine-containing acrylic resin, fluorocarbon resin, fluorine-containing acrylic modified polyurethane resin and fluorine-containing acrylic modified organic silicon resin; the fluorine content of the fluorine-containing resin is 10 to 50wt%, the particle size of the silicon dioxide particles is 10 to 40 nanometers, and a modifying solvent uses a fluoroalkyl silane coupling agent to modify; the solvent is prepared from ethyl acetate, butyl acetate, isoamyl acetate, ethyl butyrate, acetone, butanone, cyclohexanone, methylbenzene, xylene or nonafluorobutyl ether. The invention also provides a transparent hydrophobic and oleophobic functional coating layer which is made of the transparent hydrophobic and oleophobic functional material.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a transparent hydrophobic and oleophobic functional coating and the transparent hydrophobic and oleophobic functional coating formed therefrom. Background technique [0002] The lotus effect is also called the self-cleaning effect, which can be applied to many places, such as waterproof, oil-proof, self-cleaning of the glass surface, etc. By observing the surface of the lotus leaf with an electron scanning microscope, it will be found that there are some tiny protrusions on the surface of the lotus leaf. These tiny protrusions are micron-scale, and nano-scale protrusions are formed on the micron-scale protrusions. The lotus effect is mainly due to the superhydrophobic surface endowed by the stacking and interlacing of this micro-nano structure. Therefore, through the bionic simulation of this structure, functional coatings for waterproof and oil-proof can be prepared. [0003] There are ...

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Problems solved by technology

[0004] The common chemical method is to apply polyvinylidene fluoride, polytetrafluoroethylene, etc. to the surface of the substrate to form a hydrophobic coating. The hydrophobic and oleophobic effect of the substrate surface obtained in this way is good, but the maximum contact angle is 120 degrees. At the same time, due to the low surface energy of fluoropolymers, the bonding force between the fluoropolymer and the substrate is relatively weak, so it is difficult to prepare thinner coatings

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