Toughness versus stiffness of PP particulate composites modeling and experimental approach

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Toughness versus stiffness of PP particulate composites modeling and experimental approach

Popis výsledku v původním jazyce

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 veryfine 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- andmacro-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 mechanismon 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.

Název v anglickém jazyce

Toughness versus stiffness of PP particulate composites modeling and experimental approach

Popis výsledku anglicky

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 veryfine 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- andmacro-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 mechanismon 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.

Druh

O - Ostatní výsledky

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů