Nanocomposites and nanomaterials

Electrophysical and strength characteristics of polychlortricfluoroethylene filled with carbon nanotubes dispersed in graphene suspensions
Makhno S.M.1,2, Lisova O.M.2, Mazurenko R.V.2, Gorbyk P.P.2, Kartel M.T.1,2, Sementsov Yu.I.1,2

1 Ningbo Sino-Ukrainian New Materials Industrial Technologies Institute, Kechuang building, N777 Zhongguan road, Ningbo, 315211, China
E-mail: ysementsov@ukr.net
2 O. Chuiko Institute of Surface Chemistry, NAS of Ukraine, 17 General Naumov Str., Kyiv, 03164, Ukraine.

It is proved that one of the decisive factors that determines the effectiveness of the use of carbon nanotubes (CNT) for the reinforcement of polymeric matrices is their uniform distribution. In this case, it is shown, for example [1], that the flow threshold determined by electrical conductivity data shifts to the region of lower values with a more uniform distribution of CNT and correlates with the structural and strength characteristics of filled polymers. In this study, pre-deagglomeration of CNT was performed by ultrasound treatment in graphene nanoparticle dispersion (GNP). Three water systems with CNT content of 0.5 (1), 0.25 (2) and 0.125 (3) % wt. were dispersed. The GNP content was 0.1 m. h. to CNT. That is, the mass ratio of GNP to CNTs did not change for all systems. As can be seen from the figures, which show the dependences of the relative flexural strength (Pm/P0) and electrical conductivity (s) of PCTFE-CNT systems on the content of CNT@GNP, for the sample with the most homogeneous distribution of CNT, which was achieved at minimum CNT content during dispergation (0.125% wt. CNT) there is the lowest percolation threshold, which correlates with the maximum of strength limit.

1.	Ivanenko K.O., Ushakova L.M., Avramenko T.G. et.al. Influence of Nanofillers Concentration on Physical and Mechanical Characteristics of Their Polymer Composites // Springer Proceedings in Physics.-2021.-246.-P. 685-698.