Objective To identify the best formula of fluorinated acrylate copolymer emulsion, and investigate the performance parameters such as hydro-oleophobic and thermodynamic properties. Methods A series of fluorinated acrylate copolymer latex with core–shell structure were synthesized by semi-continuous seeded emulsion polymerization method using methyl methacrylate（MMA） , butyl acrylate（BA）and acrylic acid（AA）as the raw material, PFOA as the fluorinated acrylate monomer, ammonium persulfate （APS） as the initiator, sodium dodecyl sulfate （SDS） and polyoxyethylene octyl phenyl ether（OP-10）as the complex emulsifier and taking water as the dispersion medium. The hydro-oleophobic and thermodynamic properties as well as the surface chemical components were characterized by contact angle goniometer（CA） , fourier transform infrared （FTIR） spectroscopy, differential scanning calorimetry （DSC） , thermogravimetry analysis（TG）and atomic force microscopy（AFM） , respectively. Results The results showed that when the dosage of emulsifier was 3%, the initiator content was 0.6%, and the mass fraction of fluorinated monomer was 9%, the monomer conversion was the highest and the gel rate was the lowest, while the water contact angle and hexadecane contact angle reached 104° and 71° , respectively. Conclusion The emulsion shows good performance including hydro-oleophobic and thermodynamic properties, and is therefore suitable as inner wall coating of the ink tank and other products.