ABSTRACT
The study of thermal and dielectric properties of polymer nanocomposite materials allows us to evaluate the quality of the material and prepare recommendations for
optimizing the technology of its acquisition and production. This work is devoted to the study of various thermal and dielectric properties of the PP+MnO2
nanocomposite based on PP. The thermal-oxidative stability of the obtained nanocomposites is established. It is established that the introduction of various concentrations
of the MnO2 nanoadditive into the polymer and the effect of the ETP field lead to thermal destruction of the polymer and a decrease in its thermal stability. When
polypropylene is exposed to a field E=7*106V/m ETP, partial amorphization of the polymer matrix crystals and thermal stability occur. It is also established that
a change in the permittivity (ε), the dielectric loss tangent (tgδ) is associated with a change in the supramolecular structure of the boundary layers of the polymer matrix
and the interphase interaction between the components of the PP+MnO2 nanocomposite depending on the polarization conditions.
Keywords: electrothermopolarization, thermooxidative destruction, nanoaddition, crystallization, derivatography, depolarization.
DOI:10.70784/azip.2.2024332
Received: 23.09.2024
Internet publishing: 27.09.2024
AUTHORS & AFFILIATIONS
1. Institute of Physics Ministry of Science and Education Republic of Azerbaijan, 131 H.Javid ave, Baku, AZ-1143
2. Baku State University, 23, Z. Khalilov st., Baku, AZ 1148
E-mail: aem05@rambler.ru
Graphics and Images
Fig.1-2 Fig.3-4
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