On the Tensile Tests of Polyurethane and Its Composites with Carbon Nanotubes

Autor:	Martin Kuběna, Marek Eliáš, Lenka Zajíčková, Jan Poduška, Tomáš Kruml
Jazyk:	angličtina
Rok vydání:	2019
Předmět:	Materials of engineering and construction. Mechanics of materials TA401-492
Zdroj:	Advances in Materials Science and Engineering, Vol 2019 (2019)
Druh dokumentu:	article
ISSN:	1687-8434 1687-8442
DOI:	10.1155/2019/6598452
Popis:	Neat polyurethane (PU) specimens and composites of polyurethane with variable amounts of multiwalled carbon nanotubes (MWCNTs) were subjected to tensile tests, stress relaxation tests, and strain rate jumps. Since the already published data about the effect of carbon nanotubes addition to polymer matrix are somewhat contradictory, great care was taken to understand the mechanical properties of neat PU specimens. The studies revealed that the tensile curves of neat PU are substantially influenced by several factors, such as strain rate, age, and thickness of the specimens. The addition of MWCNTs into the PU matrix had a negligible effect on the mechanical properties of composites at low strains (ε
Databáze:	Directory of Open Access Journals
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