科研之友
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摘要
At present, the structure and properties of new nano films have become a hot topic of academic research at home and abroad, and linear methods are mainly adopted for the preparation of nano films and performance analysis. This article proposes a nonlinear method which studies the properties of nano materials using principal component analysis (PCA). Polyimide matrix nanocomposite thin film samples mixed with different ratios of BaTiO3, TiO2, SiO2 and Al2O3 inorganic nanometer particles were prepared by in-situ polymerization, parameters such as dielectric constant, electrical conductivity, particle size and specific surface area of inorganic nanometer particles in the nanocomposite thin film samples, as well as the corona-resistant time of nanocomposite thin films were tested, and the corona-resistant time matrix was calculated by PCA. The analysis results showed that among various parameters of the present sample library, the factor of specific surface area of inorganic nanometer particles had the strongest influence on the corona-resistant time of nanocomposite thin films, followed by the thermal conductivity coefficient of inorganic nanometer particles. The analytical method proposed in this paper has a reference value for the study of other types of nanocomposite thin film samples.
