Epoxy silane coupling agent-organic fluorine composite modification styrene-acrylic emulsion and preparation method thereof

The invention discloses an epoxy silane coupling agent-organic fluorine composite modification styrene-acrylic emulsion and a preparation method thereof. Methyl methacrylate, styrene, n-butyl acrylate, methacrylic acid, dodecafluoroheptyl methacrylate, 3-glycidyl ether oxy-propyl trimethoxy silane, octaphenyl polyoxyethyiene, sodium dodecyl benzene sulfonate, ammonium persulfate and distilled water are used as main raw materials; through an emulsion polymerization mode, the epoxy silane coupling agent-organic fluorine composite modification styrene-acrylic emulsion is prepared. Compared with the conventional styrene-acrylic emulsion, the prepared modified styrene-acrylic emulsion has the advantages of more excellent properties such as film coating intensity, film coating adhesion power, film coating water absorption rate, film coating anti-corrosion performance and emulsion conversion rate. The film coating pencil hardness is 4H or higher; the adhesion power reaches grade 1 or higher;the water absorption rate