Strength of fibrous composites with nanomodified filler

Based on the analysis of literature and experimental data, it is shown that the increase in the strength of composite materials should be expected with nanomodifying the fibrous filler of a composite. The technological scheme of creating hybrid composites with modified filler fibers based on the method for gas-phase deposition of carbon nanotubes is proposed and studied. Using the scanning and transmission electron microscopes, a structure ofthe carbon cloth after its nanomodifying is identified. The possibility of the uniform distribution of carbon nanotubes in all strands of tissue except the end strands, where the tissue is damaged, is shown. The technology for preparing samples of hybrid composites with modified filler fibers, which provided for removal of damaged areas, is described. The experimental scheme for studying the strength of hybrid composite materials is substantiated. It is shown that the modification of hybrid composite fibers by carbon nanotubes increases their strength by 60 %. The further increase in the strength of hybrid composites should be expected in the field of determining the optimal characteristics of carbon nanotubes (length, diameter, mass fraction) in the complex structure of hybrid nanocomposites with different binders.

References

[1] Tarasov V.A., Stepanishchev N.A. The application of nanotechnology to hardening the polyester matrix. Vestn. Mosk. Gos. Tekh. Univ. im. N.E. Baumana, Mashinostr., Spetsvyp. "Aktual’nye problemy razvitiya RKT i sistem vooruzheniya" [Herald of the Bauman Moscow State Tech. Univ., Mech. Eng., Spec. Issue "Topical problems of rocketry and weapon systems"], 2010, pp. 207-217 (in Russ.).

[2] Tarasov V.A., Stepanishchev N.A. Hardening of the polyester matrix by carbon nanotubes. Vestn. Mosk. Gos. Tekh. Univ. im. N.E. Baumana, Priborostr. Spetsvyp. "Nanoinzheneriya" [Herald of the Bauman Moscow State Tech. Univ., Instrum. Eng., Spec. Issue "Nanoengineering"], 2010, pp. 53-65 (in Russ.).

[3] Tarasov V.A., Stepanishchev N.A., Boyarskaya R.P. Methods of experimental study of characteristic time points in the process of preparing nanosuspensions under ultrasonic action. Vestn. Mosk. Gos. Tekh. Univ. im. N.E. Baumana, Mashinostr., Spetsvyp. "Energeticheskoe i transportnoe mashinostroenie" [Herald of the Bauman Moscow State Tech. Univ., Mech. Eng., Spec. Issue "Power and transport engineering"], 2011, pp. 53-65 (in Russ.).

[4] Tarasov V.A., Stepanishchev N.A., Romanenkov V.A., Alyamovskiy A.I. Improving the quality and manufacturability of the polyester matrix of composite structures on the basis of ultrasonic nano modification. Vestn. Mosk. Gos. Tekh. Univ. im. N.E. Baumana, Mashinostr. [Herald of the Bauman Moscow State Tech. Univ., Mech. Eng.], 2012, pp. 166-174 (in Russ.).

[5] Garcia E.J., Hart A.J., Wardle B.L., Slocum A.H. Fabrication of composite microstructures by capillarity-driven wetting of aligned carbon nanotubes with polymers. Nanotechnology, 2007, vol. 18, no. 16, pp. 1-11. doi:10.1088/0957-4484/18/16/165602

[6] Hart A.J., Slocum A.H. Flow-mediated nucleation and rapid growth of millimeter scale aligned carbon nanotube structures from a thin-film catalyst. J.Phys. Chem. B., 2006, vol. 110, no. 16, pp. 8250-8257.