Abstract
PurposeThe purpose of this paper is to synthesise and characterise nano‐alumina hybrid polyimide (PI) films.Design/methodology/approachPI nano‐composite films containing definitive contents of Al2O3 were prepared by the sol‐gel process of aluminum isopropoxide in the N, N′‐dimethylacetamide solution of polyamide acid. The films were characterised by Fourier transform infrared spectroscope, atomic forced microscope, and X‐ray fluorescent spectroscope (XRF). The thermal stability of the composite films was tested by TG.FindingsPI nano‐Al2O3 films were prepared by the sol‐gel method. The XRF is an effective way to detect the inorganic phase of the composite films and measure the content of nano‐Al2O3.Research limitations/implicationsThere are seldom reports about the PI composites containing Al2O3 through sol‐gel process.Practical implicationsPI has been widely used in the fields of aviation micro‐electron and less costly dyes.Originality/valueImproved electricity insulation property of the PI films. Al2O3 particles were distributed homogeneously in the PI in nano‐scale by means of sol‐gel process.
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