Failure mechanics in ternary composites of polypropylene with inorganic fillers and elastomer inclusions

Jančář, J.; Dibenedetto, A. T.

doi:10.1007/bf01184598

Cited by 82 publications

(66 citation statements)

References 19 publications

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“…Many research projects have studied the structure/property relationship of PP/rubber blends filled with rigid inorganic particles to identify the toughening and reinforcing effect of these materials. 17,18,20,21 From that point of view, fiber reinforced rubber composites have widely been in use for some time because of their good mechanical properties. Most systems employed continuous fibers because of the vastly improved properties of the composites.…”

Section: Introductionmentioning

confidence: 99%

Morphology/behavior relationship and recyclability of composites based on PP/EPDM blends and short aramid fibers

Arroyo

Bell

2002

J of Applied Polymer Sci

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ABSTRACT:The effect of short aramid fibers on the mechanical behavior of polypropylene (PP) and ethylene-propylene-diene (EPDM) and their blends has been investigated by means of an experimental design. The results have shown that aramid fibers are very effective reinforcing agents for composites when the continuous phase of the matrix is constituted by PP, so sensible increments in tensile modulus and strength are obtained as fiber content in the composites increases. An optimal matrix composition and fiber content has been observed that produced high abrasion resistance compounds. However, the abrasion resistance of very rich EPDM matrices is hardly affected by fibers content. The addition of fibers to EPDM rich (Ͼ50%) matrices gives rise to a sensible decrease of the impact strength of this polymer. However, at PP contents above 50% in the polymer matrix, an increase of impact strength is observed at fiber percentages in the composites above 10%. The different behavior of the fibers depending on matrix type can be attributed to a better affinity of these fibers for PP matrix. Morphological studies of the composites have been carried out by scanning electron microscopy. Finally, the price and recyclability of these materials have been analyzed.

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Section: Introductionmentioning

confidence: 99%

Morphology/behavior relationship and recyclability of composites based on PP/EPDM blends and short aramid fibers

Arroyo

Bell

2002

J of Applied Polymer Sci

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“…[11][12][13][14] Most studies have focused on the influence of the phase morphology. Ternary composites containing an encapsulated filler have been reported to have somewhat higher tensile impact strength but lower modulus than those with a separation structure, because the effect of the incorporated elastomer is extended by the filler.…”

Section: Introductionmentioning

confidence: 99%

“…3 Although some experimental data on the mechanical properties of such ternary com-posites has been published in the literature, contradictory results on the influence of the filler on the microstructure and crystallization of the ternary composites were reported. [11][12][13][14] In the present study, the relationship between the structure and mechanical properties of ternary-phase PP composites, containing an ethylene-octene copolymer and calcium carbonate, was investigated. Particular attention was also given to the influence of surface-treated filler on the microstructure and crystallization behavior of the composites.…”

Section: Introductionmentioning

confidence: 99%

Influence of stearic acid treatment of filler particles on the structure and properties of ternary-phase polypropylene composites

Premphet

Horanont

1999

J. Appl. Polym. Sci.

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ABSTRACT:In this study, ternary-phase polypropylene (PP) composites containing an ethylene-octene copolymer (EOR) and calcium carbonate (CaCO 3 ) were investigated. Particular consideration was given to the influence of stearic acid treatment of the filler on the phase morphology and mechanical properties of the composites. In composites containing an uncoated filler, a separate dispersion of the elastomer and filler particles in the PP matrix was observed. The use of filler treated with stearic acid had no effect either on the dispersion or the interaction of the filler and the polymer components. However, the surface-treated filler was found to promote the ␤-hexagonal crystallization of PP and gave a composite with lower T c onset and T c values. As a consequence, differences in mechanical properties, in particular, impact strength, were exhibited in which calcium carbonate with stearic acid treatment was apparently more effective in increasing the impact strength of the composites in comparison with the composites containing the uncoated filler.

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“…To provide PP composites with an optimum balance of toughness and stiffness, recently works have been focused on fabricating multicomponent or hybrid PP composites containing fiber or elastomer and inorganic particles [11][12][13], where traditional fabrication process have been employed [14]. However, the performance of hybrid composites was even worse than the PP composites containing a single filler because the properties of composites not only depends on the components, but also depends on the phase structure and phase size [15].…”

Section: Introductionmentioning

confidence: 99%

Synergic Effect of Two Inorganic Fillers on the Mechanical and Thermal Properties of Hybrid Polypropylene Composites

Aguilar

Yazdani‐Pedram

Toro

et al. 2014

J. Chil. Chem. Soc.

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Inorganic fillers such as CaCO 3 and clays are widely used as fillers to improve the mechanical and physical properties of polypropylene (PP). With the aim of improving simultaneously the stiffness and yield stress of PP, hybrid nanocomposites comprising PP/CaCO 3 /clay (montmorillonite) were prepared and their thermal and mechanical properties were investigated and compared with those of PP/CaCO 3 and PP/clay composites. Morphological characterizations of the composites were performed by SEM and XRD analyses. The results showed exfoliated clay in the hybrid composite with a much higher degree than in PP/ clay composite. Increase in modulus and yield stress and better thermal stability was attained for hybrid composites as a result of the clay exfoliation. The toughening effect of two different types of CaCO 3 particles was also observed in hybrid composites, where an effective enhancement of the mechanical and thermal properties were achieved depending on the origin, specific area, particle and pore size of the CaCO 3 used.

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Failure mechanics in ternary composites of polypropylene with inorganic fillers and elastomer inclusions

Cited by 82 publications

References 19 publications

Morphology/behavior relationship and recyclability of composites based on PP/EPDM blends and short aramid fibers

Morphology/behavior relationship and recyclability of composites based on PP/EPDM blends and short aramid fibers

Influence of stearic acid treatment of filler particles on the structure and properties of ternary-phase polypropylene composites

Synergic Effect of Two Inorganic Fillers on the Mechanical and Thermal Properties of Hybrid Polypropylene Composites

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