About: Toughness versus stiffness of PP particulate composites modeling and experimental approach

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	This contribution is focused on particulate composites, namely on composites with polypropylene matrix (PP) and rigid (CaCO3) fillers. Generally, the addition of rigid particles to a polymeric matrix has an embrittling effect on the composite. Using very fine isometric filler of sub-micron range with proper surface treatment and good final dispersion enable to achieve enhancement of toughness without significant reduction of its stiffness. The role of filler size and interphase properties on micro- and macro-behaviour of particulate composites is analysed from the experimental as well theoretical point of view. The attention is focused on fracture toughness and stiffness values. It is concluded that one of the possible sources of a toughening mechanism on micro- level is a blunting of the micro-crack caused by its interaction with coated particles. The results of numerical simulations are compared with relevant results determined experimentally. This contribution is focused on particulate composites, namely on composites with polypropylene matrix (PP) and rigid (CaCO3) fillers. Generally, the addition of rigid particles to a polymeric matrix has an embrittling effect on the composite. Using very fine isometric filler of sub-micron range with proper surface treatment and good final dispersion enable to achieve enhancement of toughness without significant reduction of its stiffness. The role of filler size and interphase properties on micro- and macro-behaviour of particulate composites is analysed from the experimental as well theoretical point of view. The attention is focused on fracture toughness and stiffness values. It is concluded that one of the possible sources of a toughening mechanism on micro- level is a blunting of the micro-crack caused by its interaction with coated particles. The results of numerical simulations are compared with relevant results determined experimentally. (en)
Title	Toughness versus stiffness of PP particulate composites modeling and experimental approach Toughness versus stiffness of PP particulate composites modeling and experimental approach (en)
skos:prefLabel	Toughness versus stiffness of PP particulate composites modeling and experimental approach Toughness versus stiffness of PP particulate composites modeling and experimental approach (en)
skos:notation	RIV/68081723:_____/09:00332105!RIV10-AV0-68081723
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA106/07/1284), P(KJB200410803), Z(AV0Z20410507)
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Knésl, Zdeněk Náhlík, Luboš Hutař, Pavel Majer, Zdeněk
http://linked.open.../riv/druhVysledku	O - Ostatní výsledky nezařaditelné do žádného z výše uvedených druhů výsledku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyziky materiálů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	346536
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/09:00332105
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	particulate composite; multiscale modeling; fracture toughness; stiffness (en)
http://linked.open.../riv/klicoveSlovo	multiscale modeling stiffness fracture toughness particulate composite
http://linked.open...ontrolniKodProRIV	[A8D7474FF5ED]
http://linked.open...in/vavai/riv/obor	JL
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Toughness of Polyolefins Composites with Micro-fillers Generalization of linear elastic fracture mechanics to crack propagation problems in non-homogenous materials
http://linked.open...UplatneniVysledku	2009
http://linked.open...iv/tvurceVysledku	Hutař, Pavel Knésl, Zdeněk Majer, Zdeněk Náhlík, Luboš Nezbedová, E.
http://linked.open...n/vavai/riv/zamer	Physical properties of advanced materials in relation to their microstructure and processing

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