“…With increasing the frequency, the dipole orientation cannot keep up with the change of alternating electric field, in favor of further decreasing the ε of the cured resins. 36 The dielectric properties of PFSA-C and PTFOSA-C are better than those of reported polymer matrices of wave-transparent composites, such as cyanate resins, 30,37 epoxy resins, 38,39 bismaleimide resins, 40,41 polyimide resins 42,43 and other poly(silylene arylacetylene)s. 19,28 The dielectric properties of PFSA-C and PTFOSA-C as compared with those of the reported resins along with their T d5 are shown in Fig. 5b.…”