ON THE INFLUENCE OF CARBON NANOTUBES
ON THE PHYSICAL AND MECHANICAL PROPERTIES
OF POLYPROPYLENE

Irina V. Zaporotskova
Doctor of Physical and Mathematical Sciences, Professor,
Director of the Institute of Priority Technologies,
Volgograd State University
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Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation

Vladislav L. Kalinichenko
Master Student,
National Research Technological University “MISiS”
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Leninsky Prosp., 4, 119049 Moscow, Russian Federation

Lev V. Kozhitov
Doctor of Technical Sciences, Professor,
Department of Technology for Electronic Materials,
National Research Technological University “MISiS”
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Leninsky Prosp., 4, 119049 Moscow, Russian Federation

Pavel A. Zaporotskov
Candidate of Physical and Mathematical Sciences, Associate Professor,
Department of Forensic Science and Physical Materials Science,
Volgograd State University
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Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation

Tatyana V. Kislova
Senior Lecturer,
Department of Forensic Science and Physical Materials Science,
Volgograd State University
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Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation

Abstract. One of the most interesting and promising materials of our time is carbon nanotubes. Most applications of nanotubes are associated with the possibility of combining them with other materials in the form of alloys, mixtures, composites or hybrid materials. In particular, the idea of including carbon nanotubes as a filler in various polymer-based matrices (for example, traditional polymers such as thermoplastics, thermosetting materials or elastomers, as well as conjugated polymers) for the formation of polymer/carbon nanotube nanocomposites has revolutionized materials science and engineering. The introduction of carbon nanotubes into the composite structure affects the structure and properties of the polymer binder, as well as the composite material as a whole. Currently, there are no experimental developments on the basis of which the introduction, distribution and stabilization of the dispersion of carbon nanotubes in polymer composites would be implemented in industrial technology. The development of the most effective methods for introducing carbon nanotubes into polymer materials and determining their effect on the physical and mechanical properties of polymers is an urgent and priority task. It is possible that these methods will be able to find application in the industrial production of polymer composite materials intended for use and operation in various extreme conditions (whether it is high temperatures, erosion, high force exposure or highly acidic/highly alkaline environments). The main physical and mechanical properties of polypropylene samples saturated with carbon nanotubes taken at different concentrations (0; 0.01; 0.05 and 0.1 wt. %), who found that the addition of CNT in large quantities negatively affects the tensile and bending strength limits, which may be associated with an increase in the degree of heterogeneity of the structure and the appearance of large agglomerates, which will be points of stress concentration. With an increase in the mass fraction of carbon nanotubes in the polymer nanocomposite, the tangent of the dielectric loss angle increases, which leads to better conductivity of the sample containing a larger number of nanotubes. This may be due to the fact that nanotubes become conductors of electric current in the volume of the polymer matrix.
Key words: propylene, carbon nanotubes, tensile strength, composite materials, physical and mechanical properties.

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