Inorganic nanohybrid polyimide (PI) has wide applications in electric and electronics for its outstanding insulating
mechanical and heat-resistance properties.Al2O3/PI nanohybrid films of 100CR (Dupont)
with excellent corona-resistance
were characterized by synchrotron radiation small angle X-ray scattering (SAXS) and transmission electric microscopy (TEM).The results show that the inorganic particles are 4–7 nm in size.The interface between nanoparticles and matrix is sharp.Fractal dimension of the film is 2.48.