“…In recent years, the preparations of polyimide composite materials have been extensive studied due to the dramatic improvements over their pure state in the thermal stability, mechanical properties and other functional features by introducing only small fraction of inorganic fillers, such as SiO 2 , Al 2 O 3 , AlN, TiO 2 , BaTiO 3 and magadiite [12][13][14][15][16][17][18][19] . In this study, BaZrO 3 (BZO) was chosen as ceramic filler due to its very high melting point (2600 C), small thermal expansion coefficient, poor thermal conductivity, good mechanical properties, thermal stability and low chemical reactivity towards corrosive compounds [20] .…”