Efekt velikosti částice na lomové chování polypropylenového částicového kompozitu

Effect of Particles Size and Density on Fracture Toughness of Polypropylene Particulate Composite

článek ve sborníku ve WoS nebo Scopus

en

The addition of mineral fillers to polypropylene (PP) can profoundly change the mechanical properties of polymer system. The properties of the particles themselves (size, shape, and material properties) can have significant effect on the global behaviour of composite, particularly on its toughness and stiffness. The adhesion between the particles and the matrix essentially contributes to the ability of the matrix to transfer macro-load and plays a deciding role in evaluation of the driving force of micro-cracks. This contribution is focused on effects of particles size and their density on fracture toughness of polyprophylen particulate composite. The effect was studied from the experimental as well as from the theoretical point of view. The change of fracture toughness was estimated with utilisation of linear elastic fracture mechanics approach. The particle-reinforced composite was modelled as a three-phase material with homogeneously distributed coated particles and numerically simulated using the finite element program ANSYS.

V práci je studován především vliv velikosti plniva přidávaného do matrice na celkové lomové chování kompozitu.

The addition of mineral fillers to polypropylene (PP) can profoundly change the mechanical properties of polymer system. The properties of the particles themselves (size, shape, and material properties) can have significant effect on the global behaviour of composite, particularly on its toughness and stiffness. The adhesion between the particles and the matrix essentially contributes to the ability of the matrix to transfer macro-load and plays a deciding role in evaluation of the driving force of micro-cracks. This contribution is focused on effects of particles size and their density on fracture toughness of polyprophylen particulate composite. The effect was studied from the experimental as well as from the theoretical point of view. The change of fracture toughness was estimated with utilisation of linear elastic fracture mechanics approach. The particle-reinforced composite was modelled as a three-phase material with homogeneously distributed coated particles and numerically simulated using the finite element program ANSYS.

částicový kompozit, lomová houževnatost, mezivrstva

particulate composite, fracture toughness, interphase, finite element model

2008

02.09.2008

Brno

9781617823190

European Conference on Fracture, ECF17

1576–1583

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