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- Title
STRUKTURIRANJE ALIFATIČNIH POLIURETANSKIH NANOKOMPOZITA I ISPITIVANJE NJIHOVIH DINAMIČKO-MEHANIČKIH I MEHANIČKIH KARAKTERISTIKA.
- Authors
Kojić, Dejan; Pavličević, Jelena; Jovičić, Mirjana; Ikonić, Bojana; Mićić, Vladan; Aleksić, Vojislav; Budinski-Simendić, Jaroslava
- Abstract
In this study, a series of segmented polyurethane materials based on two different aliphatic polycarbonate diols T5651 (50% of pentane and 50% of hexane groups) and T4671 (30% of butane and 70% of hexane groups as repeating units in the chain structure) were obtained. The thermoplastic polyurethane materials were reinforced by addition of 1 wt. % of organoclays layered structure (montmorillonite and bentonite). The influence of the hard and soft segments ratio on the mechanical properties and the absolute elongation of segmented polyurethane elastomers was investigated. It has been found that different hard segment contents of prepared elastomers based on polycarbonate diol T5651 had no affect on the tensile strength, but has showed a significant effect on the tensile strength of T4671-based polyurethanes. The addition of 1 wt. % of inorganic nanoparticles caused a sharp increase of thensile strength and elongation at break of polyurethanes based on T5651 macrodiol (from 23.5 to 46.7 MPa and from 420 to 702%, respectively). The mechanical properties of T4671 polycarbonate-based polyurethanes decreased by the presence of organoclay nanoparticles. Higher absolulte elongation was determined for elastomeric materials structured using T5651 polycarbonate diol as network precursor, due to the higher regularity of macrodiol chain units (the same number of pentane and hexane units).
- Publication
Uniejów Bulletin / Biuletyn Uniejowski, 2018, Issue 7, p1
- ISSN
2299-8403
- Publication type
Article
- DOI
10.7251/APE1818001K