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Complex studies of the mechanical properties of composites based on rubber
vulcanizates with various micro and nanofillers (which are already used or intended to be
used in the tire industry) were carried out. Testing of composites for uniaxial stretching to
rupture allowed us to determine the reinforcing effects of the input of fillers, as well as
materials strength and deformability. Cyclic tests for biaxial loading in two mutually
perpendicular directions were also carried out. As a result, the effects of softening and the
occurrence of induced mechanical anisotropy in filled elastomers under the action of a biaxial
load were studied. It was shown that there are no hysteresis losses in the unfilled elastomer,
and there is no induced anisotropy. For a filled elastomer, the value of hysteresis and induced
anisotropy depend on the type of filler, its concentration and particle size.
Keywords: rubber, mineral fillers, strength, ultimate strain, biaxial loading, viscouselasticity, softening, induced mechanical anisotropy |
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