Crosslinkable fluorosilicone resin, painting and super-amphiphobic coating prepared by same

Abstract

The invention belongs to the field of super-amphiphobic materials and discloses a crosslinkable fluorosilicone resin, a coating and a super-amphiphobic coating prepared from the crosslinkable fluorosilicone resin and the coating. The crosslinkable fluorosilicone resin is compared via the steps as follows: hydrogeneous organosilicon A, crosslinkable substance B, fluorine-containing substance C and modified silicon dioxide D are mixed in a dissolvent, added into a reactor, and introduced with inert gas, agitation is kept at a speed of 100-1,000 rpm, the temperature is raised to 60-140 DEG C, an activator is added and agitated for 5-24 h, the reagent is deposited into n-hexane or methanol. The crosslinkable fluorosilicone resin coating is formed by crosslinkable fluorosilicone resin, a curing agent, an activator and a dissolvent; the super-amphiphobic coating is formed by that a substrate is immersed in the crosslinkable fluorosilicone resin painting, or the crosslinkable fluorosilicone resin painting is sprayed on the surface of the substrate and baked in a baking oven for 1-20 h at 40-120 DEG C.

Description

technical field [0001] The invention belongs to the field of super-amphiphobic materials, in particular to a cross-linkable fluorosilicone resin, a coating and a super-amphiphobic coating prepared therefrom. Background technique [0002] As far as the current literature reports are concerned, most of the methods for constructing superamphiphobic materials are relatively complicated. With the development of super-amphiphobic materials, the process of preparing super-amphiphobic materials is increasingly pursuing simplification. Only by simplifying the process steps and reducing the cost of raw materials and processes can the industrialization of super amphiphobic materials be further advanced. [0003] In recent years, more and more documents and patents have mentioned the use of simple methods to construct super-amphiphobic materials, such as documents: Hongxia Wang et al. using TEOS, NH 4 OH and FAS react in absolute ethanol sol-gel to obtain a fluorine-containing nano-si...

AI Technical Summary

Problems solved by technology

[0005] But for now, the current super-amphiphobic coatings still have the following four major disadvantages: First, the process of constructing super-hydrophobic or super-amphiphobic coatings is complicated, generally requires multiple steps, and the source of raw materials used is relatively expensive

Second, the constructed super-amphiphobic coating does not have good mechanical properties, mainly because no strong cross-linking substance is used to cross-link the super-amphiphobic coating to the surface of the substrate. In the current literature, organic polymers are generally used. It is a cross-linking agent, such as silicone resin PMDS (about 200 articles), polyurethane PU

As a result, the durability and friction resistance of superamphiphobic coatings are very poor

Third, expensive and toxic organic solvents are required in the process of constructing super-amphiphobic coatings

Fourth, the application area is narrow. Generally, it is a super-hydrophobic or super-amphiphobic coating designed for a special surface, but cannot be applied to the surface of most substrates.

[0008] However, the above-mentioned amphiphilic fluoropolymers are all block polymers prepared by controllable active polymers. Relatively speaking, the synthesis cost of block polymers is relatively high, and the process is very complicated, so it is not suitable for large-scale industries. change

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