“…[5][6][7][8] Poly(p-phenylene-2,6-benzobisoxazole) (PBO) bres possess light weight, superior dielectric properties (dielectric constant of 3.0 and dielectric loss of 0.001), outstanding specic tensile strength & modulus, excellent thermal stability, and good chemical & ame resistance, [9][10][11][12][13] far exceeding other organic bres. Furthermore, CE resins possess excellent high-temperature mechanical properties, very low wateradsorption, good heat & humidity resistance, preferable dimensional stability and an epoxy-like processability, etc., and have been widely applied in aerospace, electronics, insulations, adhesives and other areas.…”