0354819 - ÚFM 2011 RIV NL eng M - Monography Chapter
Hutař, Pavel - Náhlík, Luboš - Majer, Zdeněk - Knésl, Zdeněk
The effect of an interphase on micro-crack behaviour in polymer composites.
Computational Modelling and Advanced Simulations. Vol. 24. Dordrecht: Springer, 2011 - (Murín, J.; Kompiš, V.; Kutiš, V.), s. 83-97. Computational Methods in Applied Sciences. ISBN 978-94-007-0316-2
R&D Projects: GA AV ČR(CZ) KJB200410803; GA ČR GA106/07/1284; GA ČR GA106/08/1409
Institutional research plan: CEZ:AV0Z20410507
Keywords : Particulate polymer composite * Mineral filler * Multiscale modelling
Subject RIV: JL - Materials Fatigue, Friction Mechanics

The present chapter is focused mainly on polypropylene based composites filled by mineral fillers, but some results can be generalized for other particle composites. The stiffness and toughness of the composite is modelled using a three-phase continuum consisting of the polymer matrix, mineral particles and an interphase between them. It is shown that the effect of the interphase on the macroscopic characteristics of the composite is decisive. Generally, the addition of the mineral filler to the polymer matrix leads to ebrittlement of the composite. It is shown that properties of the interphase control both the stiffness and embrittlement of the particulate composite. Primarily, the interaction of micro-cracks with coated particles is studied. It is concluded that in some cases of the microscopic particles, size and specific interphase properties and the addition of mineral fillers can lead to a good balance between fracture toughness and stiffness.
Permanent Link: http://hdl.handle.net/11104/0193735