Change in the Surface of Elastomers Based on Epichlorhydrin Rubber Modified by Functionalized Carbon Nanotubes
| Autor: | O. O. Shcherbakova, T. I. Muravyeva, I. V. Shkalei, D. L. Zagorskiy |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
02 engineering and technology Carbon nanotube Tribology 021001 nanoscience & nanotechnology Elastomer Surfaces Coatings and Films law.invention chemistry.chemical_compound Scanning probe microscopy 020303 mechanical engineering & transports 0203 mechanical engineering chemistry Natural rubber law visual_art visual_art.visual_art_medium Epichlorohydrin Composite material 0210 nano-technology Elastic modulus Hardening (computing) |
| Zdroj: | Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques. 14:1152-1159 |
| ISSN: | 1819-7094 1027-4510 |
| DOI: | 10.1134/s1027451020050353 |
| Popis: | In this paper, we study the possibilities of the modification of epichlorohydrin rubbers by special-type functionalized carbon nanotubes activated by oxygen. The purpose of this modification is to improve the tribological properties and increase frost resistance. Two types of samples with the addition of 1 and 10% nanotubes are compared with the initial unmodified rubber. The operating conditions are simulated using tribological tests performed in the express mode. Electron microscopic surface studies of the initial elastomer and samples after tribological tests reveal a change. The introduction of nanotubes is shown to promote the formation of agglomerates of a characteristic shape, increasing the surface uniformity, and its greater stability during friction. Differences in the surface topography are already evident in samples with 1% nanotubes and noticeably increase in samples with 10% nanotubes. Using scanning probe microscopy, sample sections (topography and elastic properties) are studied after tribological tests. The surface at the cut edge is found to be denser and smoother than in the bulk layers of the sample as the elastic moduli of these regions are almost identical. The introduction of activated functionalized carbon nanotubes into epichlorohydrin rubber is shown to lead to hardening of the elastomer and increases its wear resistance. |
| Databáze: | OpenAIRE |
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