Superhydrophobic　coatings　show　great　application　prospect　in　various　fields　such　as　corrosion　protection,　anti-icing,　waterproof　and　oil-water　separation,　due　to　their　unique　properties.　However,　the　poor　mechanical　stability　and　the　preparation　complexity　severely　limit　their　practical　application.　In　this　study,　superhydrophobic　epoxy　coatings　with　excellent　mechanical　stability　were　facilely　constructed　based　on　fluoridation　modification　of　amine　curing　agent　and　TiO2　nanoparticles.　Epoxy　curing　agent,　diethyltriamine,　was　fluorinated　by　the　reaction　with　heptafluorobutyric　acid　to　obtain　the　required　low　surface　energy.　Meanwhile,　fluorinated　TiO2　nanoparticles　were　prepared　through　the　reaction　with　1　H,1　H,2　H,2H-perfluorooctanetriethoxysilane　and　further　used　for　generating　the　roughness.　The　properties　of　the　coatings　were　adjusted　by　the　addition　amount　ratio　of　TiO2　nanoparticles　to　epoxy　resin.　The　performance　tests　of　water　wetting,　abrasion　resistance,　and　corrosion　resistance　of　the　coatings　were　carried　out.　The　results　show　that　the　hydrophobicity　of　epoxy　coating　is　greatly　improved　after　fluoridation　modification　of　amine　curing　agent,　and　the　greater　the　amount　ratio　fluorinated　TiO2　nanoparticles　to　epoxy　resin,　the　higher　hydrophobicity　of　the　modified　coating.　The　modified　coating　prepared　under　optimal　conditions　displays　excellent　abrasion　resistance,　self-cleaning　and　anti-corrosion　performances.　The　electrochemical　impedance　spectroscopy　tests　in　3.5　wt%　NaCl　solution　reveal　that　the　hydrophobically　modified　epoxy　coating　has　the　largest　charge　transfer　resistance,　which　is　8　orders　of　magnitude　larger　than　that　of　uncoated　Q235　steel.　This　work　provides　a　simple　method　for　preparation　of　superhydrophobic　epoxy　coatings　with　excellent　mechanical　stability,　and　will　enlighten　researchers　to　develop　more　superhydrophobic　coatings　and　their　applications.　©　2024