Authors: J. Yin, X. Wang, Y. Fan, J. Lin and Q. Lei
Affilation: Harbin University of Science and Technology, China
Pages: 791 - 794
Keywords: Sol-Gel, nanoparticle, TEM, microstructure stability
In this paper, the inorganic nanoparticles (SiO2, Al2O3) hybrid Polyimide (PI) films are prepared by Sol-Gel. The films are yellowish and transparent and the thicknesses are about 2050 m. The microstructure and nanoparticle distribution in this hybrid films are studied by SEM, TEM and EDS. The results show that there are SiO2 and Al2O3 particles in the inorganic hybrid PI films and they are stable. The particle sizes are about 5  40 nm. The most significant conclusion can be drawn as following: 1) PI is made up a large number of domains about 200 300 nm2 which is not changed by high energy electron beam; 2) the nanoparticles of SiO2 and Al2O3 are dispersed and embedded in PI, which are stable usually, but while they are irradiated by high energy electron beam of 200 keV, the smaller particles disappear whose melting point are lower, and the bigger grow up; 3) the crystalline of Al2O3 is better than that of SiO2.