The fluorinated block polymer containing epoxy groups poly(2

2

3

4

4

4-hexafluorobutyl methacrylate)-b-poly(glycidyl methacrylate)

PHFMA-b-PGMA

was prepared via AGET ATRP and used to modify bisphenol A type epoxy resins E51.The contact angle measurements indicated that the surface hydrophobicity and lipophobicity of the thermosets modified by PHFMA-b-PGMA were all better than those of pure epoxy

and it was also found that the thermosets modified by PHFMA-b-PGMA still had excellent surface stability after immersing in water or butanone for 80 h

or heated at 120℃ for 24 h.The results of differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) showed that the thermosets modified by PHFMA-b-PGMA had better thermal stability than pure epoxy resins.The mechanical properties were investigated by tensile testing and impact testing

and the results showed that the toughness of thermosets modified by PHFMA-b-PGMA could be improved

and the mechanical tests of the thermosets modified by PHFMA-b-PGMA were all corresponding to the results of their fracture surface SEM tests.