Efekt tvaru částice na lomové chování kompozitu: vliv mezifáze

PARTICLE SHAPE EFFECT ON FRACTURE TOUGHNESS OF PP-BASED PARTICULATE COMPOSITE: ROLE OF THE INTERPHASE

abstrakt

en

Polymeric particulate composites with thermoplastics, especially polypropylene (PP) matrix and mineral fillers, are of great practical importance due to the possibility of modifying mechanical properties and reducing the price/volume ratio of resulting material. The addition of mineral fillers to polypropylene (PP) profoundly changes the mechanical properties of a polymer system. The properties of the particles themselves (size, shape, material properties) can have a significant effect on the global behaviour of the composite. Generally, the addition of rigid particles to a polymer matrix will have an embrittling effect on the composite. Most studies on modification of thermoplastic composites with rigid mineral fillers report a significant decrease in fracture toughness compared with the neat polymer.

V příspěvku je studován vliv přítomnosti mezivrstvy v částicovém kompozitu na lomové chování.

Polymeric particulate composites with thermoplastics, especially polypropylene (PP) matrix and mineral fillers, are of great practical importance due to the possibility of modifying mechanical properties and reducing the price/volume ratio of resulting material. The addition of mineral fillers to polypropylene (PP) profoundly changes the mechanical properties of a polymer system. The properties of the particles themselves (size, shape, material properties) can have a significant effect on the global behaviour of the composite. Generally, the addition of rigid particles to a polymer matrix will have an embrittling effect on the composite. Most studies on modification of thermoplastic composites with rigid mineral fillers report a significant decrease in fracture toughness compared with the neat polymer.

mikro-trhlina, mechanismus zhouževnatění, částicový kompozit

micro-crack, PARTICULATE COMPOSITE, Toughening mechanisms

07.10.2008

Elsevier

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