By using epoxy resin and thermoplastics resin to modify cyanate ester resin,a modified cyanate ester
resin adhesive film for bonding advanced radomes was developed. Conversion rate of —OCN groups was determined by
FTIR spectra after curing. The adhesive film is of desirable process adhesion and its shelf life is 20 days at ambient
temperature. Lap shear strength of the adhesive film at 200益is larger than 15 MPa. Under the frequency of 9郾375
GHz,dielectric constant of the adhesive film is 3. 09, and dielectric loss tan啄is 0. 014.