Core-shell　fluoroacrylate　copolymer　latex,　typically　used　for　the　protection　of　ancient　stone　monument,　was　synthesized　in　this　paper　by　semi-continuous　seed　emulsion　polymerization　with　butyl　acrylate　(BA)　served　as　the　core,　methyl　methacrylate　(MMA),　BA　and　dodecafluoroheptyl　methacrylate　(DFHMA,　C(11)H(8)O(2)F(12))　served　as　the　shell.　At　the　same　time,　the　above　core-shell　fluoroacrylate　latex　was　modified　by　hydrolysis　of　tetraethyl　orthosilicate　(TEOS,　Si(OC(2)H(5))(4))　in　the　presence　of　silane　coupling　agent　dodecyltrimethoxysilane　(DTMS,　C(12)H(25)Si(OCH(3))(3)).　The　chemical　component　of　the　final　latex　was　analyzed　by　FT-IR.　Morphology　structure　and　the　particle　size　of　core-shell　latex　were　determined　by　TEM.　The　effect　of　DFHMA　and　TEOS　content　on　the　latex　and　film　properties　was　characterized　by　SEM-EDX,　AFM,　TEM,　DSC　and　UV-vis.　The　analysis　results　indicated　that　the　copolymer　latex　particle　presented　uniform　sphere　core-shell　structure　with　40-50　nm　in　diameter.　About　30　wt%　DFHMA　gave　favorable　characteristics　both　in　latex　and　in　film　properties.　Compared　with　core-shell　fluoroacrylate　latex,　the　modified　fluoroacrylate　copolymer　displayed,　when　TEOS　was　controlled　in　2.2-3.8　wt%,　sound　performances　in　hydrophobic,　mechanics,　thermodynamics　and　resistance　to　ultraviolet.　(c)　2008　Elsevier　B.V.　All　rights　reserved.