Amphiphobic fluoro-containing crosslinkable block copolymer and preparation method and application thereof

Abstract

The invention discloses amphiphobic fluoro-containing crosslinkable block copolymer and a preparation method and application thereof. The block copolymer can be used for preparing a super-amphiphobic coating on the surface of glass or printing paper, and the super-amphiphobic coating is prepared by the following steps of: (1) putting silica nano spheres into benzotrifluoride to obtain solution ofsilica nano spheres; (2) adding solution of amphiphobic fluoro-containing crosslinkable block copolymer, tetrahydrofuran, hydochloric acid solution and water into the solution of silica nano spheres,and reacting for 7 to 12 hours to obtain a crude product of modified silica nano spheres; (3) washing the crude product of modified silica nano spheres to obtain modified silica nano spheres; and (4)dispersing the modified silica nano spheres into the benzotrifluoride to obtain solution, dripping the solution onto a glass sheet, and after the solvent is volatilized, forming the super-amphiphobiccoating on the surface of the glass sheet, or soaking the printing paper in the solution, taking the paper out, and drying the paper to obtain the super-amphiphobic coating on the surface of the paper. The amphiphobic fluoro-containing crosslinkable block copolymer can endow a material with good superhydrophobic and oleophobic properties; and the coating has high stability and hardly falls off and denatures.

Description

technical field [0001] The invention belongs to the field of organic materials, and in particular relates to an amphiphobic fluorine-containing crosslinkable block copolymer and its preparation method and application. Background technique [0002] A super-hydrophobic surface refers to a type of surface on which water droplets can easily roll off the surface when the surface of the material is inclined less than 5° relative to the horizontal plane; the surface of the lotus leaf is a super-hydrophobic surface that is common in nature. [0003] If oil droplets can also produce the above phenomenon on the surface of a certain material, the surface of this material is a super-amphiphobic (hydrophobic, oleophobic) surface. The superamphiphobic surface has good self-cleaning properties. [0004] Perfluorinated hydrocarbons and fluorinated polymers have very low surface energies. Modification of materials with these compounds can lead to very good amphiphobic properties, such as a ...

AI Technical Summary

Problems solved by technology

[0009] At present, there are no reports on block copolymers containing both fluorine-containing blocks and cross-linkable blocks, but some scientists have reported the preparation of trackless copolymers of fluorine-containing monomers and cross-linkable monomers, such as difluoride Ethylene (CH 2 = CF 2 ) and 1,1,2-trifluorovinyl-ethyl-trialkoxysilane (CF 2 =CF-(CH 2 ) 3 Si(OR) 3 ) (Guiot, J.; Ameduri, B.; Boutevin, B.; Lannuzel, T.J. Polym.Sci.: Part A: Polym.Chem.2006, 44, 3896. Lannuzel, T.; Meunier, V. ; Faig, R.; Vedberg, O.US Patent, 2003, 0176608 A1); Tetrafluoroethylene (CF 2 = CF 2 ) and 1,1,2-trifluorovinyl-ethyl-trialkoxysilane copolymer (Kabeta, K.; Zenbayashi, M.; Shinohara, K. Japanese Patent No 3-17087-A, 1989. ); Hexafluoropropylene (CF 2 =CF-CF 3 ) and 1,1,2-trifluorovinyl-ethyl-trialkoxysilane copolymer (Ibid Patent 3-17088-A)

There are also some reports on the preparation of fluoropolymers or cross-linkable polymers, without linking the two

Images