**Author details**

of the parameter being determined, but not in the character of the curve and the extremum

Thus, it was found that to increase thermal and oxidative stability and resistance to thermal

• for matrix No. 1, the optimal content of nanostructured silicon carbide is 0.1 wt.%, and for

• for matrix No. 2, the extremum content of nanostructured silicon carbide is 0.05 and

• for matrix No. 3, the optimal content of nanostructured silicon carbide is 0.05 wt.%, and for

In this chapter, we compared the properties of composite materials based on nanostructured silicon carbide and carbon nanotubes with modified and unmodified surfaces obtained on three types of polyimide matrices (matrix No. 1 based on pyromellitic dianhydride and 4,4′-oxydianiline; matrix No. 2 based on 3,3',4,4'-benzophenone tetracarboxylic acid dianhydride and p-phenylenediamine; and matrix No. 3 based on pyromellitic dianhydride and

The influence of different amounts of nanostructured silicon carbide and carbon nanotubes on the viscosity of the intermediate precursor (polyamide acid solution), as well as the thermal stability and mechanical properties of final composites based on the polyimide binder,

It was found that for composites based on nanostructured silicon carbide and carbon nanotubes, the optimal content of inorganic filler is the interval for silicon carbide from 0.05 to

It was found that the effect of inorganic fillers on the properties obtained by thermal imidization in a high-temperature solvent of powders of composite materials depends to a large extent on the chemical nature of the polyimide matrix. The influence of the inorganic filler on the properties of the film composite material obtained by the stepwise high-temperature imidization in a vacuum medium is the same and practically independent of the structure of

Applied researches are carried out with state financial support by the Ministry of Education of Russia under the Agreement on granting subsidies No. 14.625.21.0037 of October 3, 2016

and unique identifier for Applied Scientific Researches (project) RFMEFI62516X0037.

points.

degradation:

**5. Conclusion**

the matrix.

**Acknowledgements**

carbon nanotubes, it is 0.25 wt.%;

104 Characterizations of Some Composite Materials

carbon nanotubes, it is 0.25 and 0.75 wt.%.

4-[4-(4-aminophenoxy) phenoxy] phenylamine).

was obtained and tested on three types of polyimide matrices.

0.1 wt.%, for single-walled carbon nanotubes from 0.1 to 0.75 wt.%.

0.5 wt.%, and for carbon nanotubes, it is 0.25 and 0.75 wt.%;

Anton Yegorov\*, Marina Bogdanovskaya, Vitaly Ivanov, Olga Kosova, Kseniia Tcarkova, Vasily Retivov and Olga Zhdanovich

\*Address all correspondence to: egorov@irea.org.ru

The Federal State Unitary Enterprise, Institute of Chemical Reagents and High Purity Chemical Substances of National Research Centre «Kurchatov Institute» (NRC «Kurchatov Institute» – IREA), Moscow, Russian Federation
