Influence on the thermophysical properties of nanocomposites of the duration of mixing of components in the polymer melt

Authors

DOI:

https://doi.org/10.15587/1729-4061.2022.255830

Keywords:

polymer nanocomposites, carbon nanotubes, polypropylene, thermal conductivity of nanocomposites, heat capacity of nanocomposites, density of nanocomposites

Abstract

A set of experimental studies has been carried out to establish the effect of the mixing time of components of nanocomposite materials on their thermal conductivity, specific heat, and density. The physical properties of polypropylene-carbon nanotube composites were to be studied. During the experiments, the duration of mixing of the components in the melt of the polymer varied from 5 to 52 minutes, the mass fraction of the filler ‒ in the range of 0.3...10 %, and nanocomposite temperature – from 290 K to 475 K.

It was found that an increase in the mixing time of components of nanocomposite materials could lead to a significant (more than 70 times) increase in their thermal conductivity. It is also shown that the influence of the specified time is limited to its value equal to 27 minutes, above which the change in the thermal conductivity of nanocomposites can be neglected. It was found that the sensitivity of the thermal conductivity of nanocomposites to the time of mixing of their components decreases with a decrease in the mass fraction of the filler.

Temperature dependences of the specific heat capacity of the studied composites were obtained by varying the mixing time of their components and the mass fraction of the filler. It was found that with an increase in the specified time, there is a decrease in the heat capacity of nanocomposites, which is significantly manifested only in the region of temperatures close to the melting point of the composite matrix.

It is shown that the dependence of the density of nanocomposites on the mixing time of their components in qualitative terms is similar to the corresponding dependence for their thermal conductivity. The obtained data can be used to choose the mixing time of components of nanocomposite materials in the development of appropriate technology for their production

Author Biographies

Nataliia Fialko, Institute of Engineering Thermophysics of NAS of Ukraine

Doctor of Technical Sciences, Professor, Corresponding Member of the National Academy of Sciences of Ukraine

Department of Thermophysics of Energy-Efficient Heat Technologies

Roman Dinzhos, V. О. Sukhomlynskyi National University of Mykolaiv

Doctor of Technical Sciences, Professor

Department of Physics and Mathematics

Julii Sherenkovskii, Institute of Engineering Thermophysics of the National Academy of Sciences of Ukraine

PhD, Senior Researcher, Leading Researcher

Department of Thermophysics of Energy-Efficient Heat Technologies

Nataliia Meranova, Institute of Engineering Thermophysics of the National Academy of Sciences of Ukraine

PhD, Senior Researcher, Leading Researcher

Department of Thermophysics of Energy-Efficient Heat Technologies

Viktor Prokopov, Institute of Engineering Thermophysics of the National Academy of Sciences of Ukraine

Doctor of Technical Sciences, Professor

Department of Thermophysics of Energy-Efficient Heat Technologies

Vitalii Babak, Institute of General Energy of the National Academy of Sciences of Ukraine

Doctor of Technical Sciences, Professor, Head of Department, Corresponding Member of the National Academy of Sciences of Ukraine

Department of Monitoring And Diagnostics of Energy Facilities

Volodymyr Korzhyk, E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine

Doctor of Technical Sciences, Professor, Head of Department, Corresponding Member of the National Academy of Sciences of Ukraine

Department of Electrothermal Processing Material

Diana Izvorska, Technical University of Gabrovo

PhD, Associate Professor

Department of Language and Specialized Education

Maxim Lazarenko, Taras Shevchenko National University of Kyiv

Doctor of Physical and Mathematical Sciences

Department of Molecular Physics

Volodymyr Makhrovskyi, V. О. Sukhomlynskyi National University of Mykolaiv

PhD, Associate Professor

Department of Physics and Mathematics

References

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Published

2022-04-30

How to Cite

Fialko, N., Dinzhos, R., Sherenkovskii, J., Meranova, N., Prokopov, V., Babak, V., Korzhyk, V., Izvorska, D., Lazarenko, M., & Makhrovskyi, V. (2022). Influence on the thermophysical properties of nanocomposites of the duration of mixing of components in the polymer melt. Eastern-European Journal of Enterprise Technologies, 2(5 (116), 25–30. https://doi.org/10.15587/1729-4061.2022.255830

Issue

Section

Applied physics