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Mechanical properties and morphology of glass bead–filled polypropylene composites
Author(s) -
Liang J. Z.,
Li R. K. Y.
Publication year - 1998
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.10142
Subject(s) - materials science , composite material , bead , polypropylene , ultimate tensile strength , toughness , volume fraction , izod impact strength test , glass fiber
Abstract The effects of the filler content and size on the mechanical properties such as tensile modulus, E c , yield strength, σ yc , and impact strength, S IC , of glass bead–filled polypropylene (PP) composites have been investigated employing an Instron materials tester and a Ceast impact tester at room temperature. With increasing concentration of glass beads, E c and S IC increase, but σ yc decreases non–linearly, within a filler volume fraction range of 0%−20%; under the same test conditions, the values of E C and σ yc for PP with bigger beads are somewhat lower than those of PP with smaller ones; the maximum values of S IC for the composites are about 1.4 times as high as the unfilled PP; the interface between the matrix and the beads is a weak bond. The results indicate that the stiffness and the toughness of the PP composites are effectively improved by addition of glass beads.