| Autor: |
Garishin, O. K., Kislitsyn, V. D., Svistkov, A. L., Shadrin, V. V., Gorkunov, Eduard, Panin, Victor E., Irschik, Hans |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2020, Vol. 2315 Issue 1, p1-4, 4p |
| Abstrakt: |
Studies of the mechanical properties of elastomeric nanocomposites depending on the shape of the filler particles are carried out. Graphene nanoplates, detonation nanodiamonds, and single-walled graphene nanotubes are used as fillers. Samples are tested for uniaxial tension at a constant speed. The viscoelastic behavior of these composites is studied using a special technique based on the cyclic loading of the sample with increasing strain amplitude at each subsequent step and stops for relaxation after load direction reverse. Experimental tests have shown that the greatest effect of changing the mechanical behavior of the elastomer is observed when graphene nanotubes are used. These composites show well-defined viscoelastic properties and a softening effect, as well as the strongest hardening. It has been hypothesized that all these differences are related to the geometry of the filler and that all these differences are related to filler particle geometry. Graphene nanotubes can be considered as long and flexible fibers that can form a spatial network in the elastomeric matrix even at sufficiently low fillings. When the composite is loaded, this network can be destroyed, and this is accompanied by reorientation and mutual slipping of the nanofibers. These processes require significantly higher energy costs than those for moving and turning granular or lamellar particles. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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