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Nanoscience and Technology: An International Journal
ESCI SJR: 1.031 SNIP: 1.517 CiteScore™: 0.7

ISSN Imprimir: 2572-4258
ISSN On-line: 2572-4266

Nanoscience and Technology: An International Journal

Anteriormente Conhecido Como Nanomechanics Science and Technology: An International Journal

DOI: 10.1615/NanomechanicsSciTechnolIntJ.v2.i1.60
pages 71-83

MODELING OF ANOMALOUS MECHANICAL PROPERTIES OF POLYURETHANE MODIFIED BY CARBON SINGLE-WALL NANOTUBES

E. R. Badamshina
Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russian Federation
Ya. I. Estrin
Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russian Federation
G. S. Kulagina
Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russian Federation
Sergey A. Lurie
Institute of Applied Mechanics of the Russian Academy of Sciences, 7th Leningrhadsky Ave., Moscow, 125040, Russia; Moscow Aviation Institute National Research University, 4 Volokolamskoe Highway, Moscow, 125080, Russia
Yury Solyaev
Institute of Applied Mechanics, Russian Academy of Sciences, 7 Leningradskii Ave., Moscow, 125040, Russia; Moscow Aviation Institute, 4 Volokolamskoe Highway, Moscow, 125080, Russia

RESUMO

The paper deals with modeling of an unusual dependence of the mechanical properties of polyurethane-urea (PAU) cross-linked elastomer containing 10 vol.% polyamide-6 (polycaprolactame) of the concentration of nanomodifier - single-wall carbon nanotubes (CNT). This elastomer picks up unusual properties after introduction of an extremely small amount of CNT. A relatively small mass fraction of nanotubes in the composite changes from zero to 0.018%. Results of the experiment show that at a mass fraction of nanoinclusions of about 0.002% a substantial and clearly defined growth of practically all mechanical characteristics, including the elasticity modulus and limiting stresses, is observed. In this case, limiting deformations change slightly. In the work, the effect of anomalous variation of the Young modulus is modeled using the gradient model of interphase layer.

Referências

  1. Aldoshin, S. M., Badamshina, E. R., and Kablov, E. N., Polymer nanocomposites – new generation of polymer materials with improved field-performance data.

  2. Badamshina, E. R., Gafurova, M. P., and Estrin, Ya. I., Modification of CNT and synthesis of polymer composites on their basis.

  3. Belov, P. A. And Lurie, S. A., Continuum model of microheterogeneous media.

  4. Encyclopedia of Polymers, vols. 2–3.

  5. Gusev, A. A. and Lurie, S. A., Strain-gradient elasticity for bridging continuum and atomistic estimates of stiffness of binary Lennard-Jones crystals.

  6. Lurie, S., Volkov-Bogorodsky, D., Zubov, V., and Tuchkova, N., Advanced theoretical and numerical multiscale modeling of cohesion/adhesion interactions in continuum mechanics and its applications for filled nanocomposites.

  7. Lurie, S. A., Belov, P. A., and Tuchkova, N. P., The application of the multiscale models for description of the dispersed composites.

  8. Lurie, S. A., Belov, P. A., Volkov-Bogorodsky, D. B., and Tuchkova, N. P., Interphase layer theory and application in the mechanics of composite materials.

  9. Lurie, S. A. and Tuchkova, N. P., Continuum models of adhesion for deformable solid bodies and media with nanostructures.

  10. Peigney, A., Laurent, Ch., Flahaut, E., Bacsa, R. R., and Rousset, A., Specific surface area of CNT and bundles of CNT.

  11. Toupin, R. A., Theories of elasticity with couple-stress.


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