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Viskoelastické chování kompozitů na bázi ohebných organických vláken

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dc.title Viskoelastické chování kompozitů na bázi ohebných organických vláken cs
dc.title Viscoelastic Properties of Flexible Organic Fiber Composites en
dc.contributor.author Hausnerová, Berenika
dc.contributor.author Zdražilová, Natálie
dc.contributor.author Kitano, Takeshi
dc.contributor.author Sáha, Petr
dc.relation.ispartof International Polymer Processing
dc.identifier.issn 0930-777X Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2005
utb.relation.volume 20
utb.relation.issue 1
dc.citation.spage 19
dc.citation.epage 26
dc.type article
dc.language.iso en
dc.publisher Carl Hanser Verlag GmbH & Co. KG en
dc.subject kompozit cs
dc.subject organická vlákna cs
dc.subject rheologie cs
dc.subject organic fiber en
dc.subject high density polyethylene en
dc.subject composites en
dc.subject melt rheology en
dc.subject viscoelastic properties en
dc.subject strain dependence en
dc.subject rigidity en
dc.description.abstract V této práci byl sledován pevnosti/pružnosti vláken na viskoelastické vlastnosti HDPE kompozitů. Jako plnivo byla použita LCP (liquid crystalline polymer) vlákna, PVAL vlákna a dva typy aramidových vláken. Bylo zjištěno, že flexibilita vláken se v kompozitech uplatňuje zejména při nižších deformacích. Koncentrace plniva má značný vliv na parametry modelů popisujících vztahy mezi viskoelastickými funkcemi a obsahem vláken. cs
dc.description.abstract Molten HDPE was compounded with four kinds of high performance organic fibers: two types of aramid (KF), liquid crystalline polymer (LCP) and poly(vinyl alcohol) (VF), differing in their chemical structure and fiber lengths. From the SEM pictures, it is observed that shape and size of these organic fibers maintained almost the same even after cutting in pellets, following the mixing process. VF/HDPE and LCP/HDPE systems show generally lower rates of increase of both storage modulus and dynamic viscosity with fiber content than KF/HDPE composites. Comparison of these functions at the fixed fiber content has shown that the most effective parameter, affecting the viscoelastic behaviour of organic fiber filled systems, seems to be their rigidity/flexibility in the molten state. The influence of fiber rigidity/flexibility becomes gradually lower with the increase of both strain amplitude and angular frequency. The parameters of the equations describing relationship between relative values of viscoelastic functions and fiber content were found to be largely dependent on fiber content. Such finding remarkably differs from behaviour of short inorganic fiber filled systems, where these variables maintained constant values. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1000423
utb.identifier.rivid RIV/70883521:28110/05:63503758
utb.identifier.obdid 14052899
utb.identifier.scopus 2-s2.0-16844373232
utb.identifier.wok 000228136300004
utb.source j-riv
utb.contributor.internalauthor Hausnerová, Berenika
utb.contributor.internalauthor Zdražilová, Natálie
utb.contributor.internalauthor Sáha, Petr
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