Mechanical and microwave absorbing properties of carbon-filled polyurethane

0315709 - ÚPT 2009 RIV GB eng J - Journal Article
Kučerová, Z. - Zajíčková, L. - Buršíková, V. - Kudrle, V. - Eliáš, M. - Jašek, O. - Synek, P. - Matějková, Jiřina - Buršík, Jiří
Mechanical and microwave absorbing properties of carbon-filled polyurethane.
[Mechanické a mikrovlně absorbční vlastnosti polyuretanu plněného uhlíkovými vlákny.]
Micron. Roč. 40, č. 1 (2009), s. 70-73. ISSN 0968-4328. E-ISSN 1878-4291
R&D Projects: GA ČR(CZ) GA202/05/0607
Institutional research plan: CEZ:AV0Z20650511; CEZ:AV0Z20410507
Keywords : carbon nanotubes * composite * polyurethane * mechanical properties
Subject RIV: JI - Composite Materials
Impact factor: 1.626, year: 2009

Polyurethane (PU) matrix composites were prepared with various carbon fillers at different filler contents in order to investigate their structure, mechanical and microwave absorbing properties. As fillers, flat carbon microparticles, carbon microfibers and multiwalled carbon nanotubes (MWNT) were used. The microstructure of the composite was examined by scanning electron microscopy and transmission electron microscopy. Mechanical properties, namely universal hardness, plastic hardness, elastic modulus and creep were assessed by means of depth sensing indentation test. Mechanical properties of PU composite filled with different fillers were investigated and the composite always exhibited higher hardness, elastic modulus and creep resistance than un-filled PU. Influence of filler shape, content and dispersion was also investigated.

Byly připraveny polyuretanové kompozity plněné rozdílnými uhlíkovými plnivy s cílem studovat jejich strukturu, mechanické a mikrovlné vlastnosti. Kompozity vykazovaly vyšší tvrdost, modul pružnosti a kreepovou odolnost než čistá PU matrice.
Permanent Link: http://hdl.handle.net/11104/0165830