Misconceptions about filled polymers

Piggott, M. R.; Leidner, Jacob

doi:10.1002/app.1974.070180604

Cited by 123 publications

(49 citation statements)

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“…30,31 Here, r b and r p represent the tensile strength of the blend and the i-PP matrix, respectively. These equations are based on the relationship of area fraction or the volume fraction of the discontinuous phase 32,33 in noadhesion types of blend structure. Realistic features, such as stress concentrations at the narrow portions of the matrix at the inclusion-matrix interphase, were incorporated in the two-thirds power law by Nicolais-Narkis, eq.…”

Section: Tensile Strengthmentioning

confidence: 99%

Effect of flexibility of ethylene vinyl acetate and crystallization of polypropylene on the mechanical properties of i‐PP/EVA blends

Kakkar¹,

Maiti²

2011

J of Applied Polymer Sci

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Polymer blend technology has been widely used for the past several years for the modification or enhancement of mechanical properties of polymers to obtain an overall balance of properties over those of the constituents. Despite its interesting mechanical and thermal properties, the impact strength of polypropylene leaves wide scope for improvement. A series of blends of ethylene vinyl acetate (EVA) copolymer with an impact grade of isotactic polypropylene (i-PP) were prepared by single screw extrusion at 0-0.32 volume fraction of the dispersed phase. The mechanical properties such as tensile behavior, elongation-at-break, and impact strength of these blends systems as well as crystallinity were evaluated. Crystallinity data have been used in greater depth to support the mechanical properties. Differential scanning calorimetry studies conducted to study the modification in crystallinity of the crystalline component, i-PP, of the blend revealed that the rubber component of the blend enhanced the crystallinity of i-PP phase by providing sites for nucleation. Tensile modulus and strength decreased while the impact strength and breaking elongation enhanced with blending elastomer concentration. The improved properties of these PP/EVA blends are encouraging for carrying out further work on this system (composites) and suggest potential high impact strength applications for PP.

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Section: Tensile Strengthmentioning

confidence: 99%

Effect of flexibility of ethylene vinyl acetate and crystallization of polypropylene on the mechanical properties of i‐PP/EVA blends

Kakkar¹,

Maiti²

2011

J of Applied Polymer Sci

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“…Neilsen21 and Leidner et al [22][23][24] proposed that the tensile strength of composite materials, consisting of a matrix with spherical inclusions, can be related to the area fraction of the dispersed phase, with a general equation of this form:…”

Section: Yield Strength Of Blendsmentioning

confidence: 99%

The mechanical behavior of blends of polyethylene, polypropylene, and an ethylene–propylene block copolymer at −20°C

Flaris¹,

Stachurski²

1992

J of Applied Polymer Sci

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Compatibilization is necessary for most binary blends which display poor mechanical properties. The addition of an ethylene–propylene block copolymer to a blend of isotactic polypropylene and linear low‐density polyethylene alleviates the problem of poor adhesion at the interface. This was observed through the improvement in overall performance of the blend. It was noted that it is not solely the “interfacial agent” which is responsible for the improvement in impact strength of this blend. © 1992 John Wiley & Sons, Inc.

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“…Here, a model is presented which, thought resulting in an equation different in nature than either of the two above, fits the experimental data as well as eq. (2). Spherical particles of volume V, are being added to a polymeric matrix (Fig.…”

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confidence: 99%

The effect of spherical inclusions on the ultimate strength of polymer composites

Schrager

1978

J of Applied Polymer Sci

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Misconceptions about filled polymers

Cited by 123 publications

References 0 publications

Effect of flexibility of ethylene vinyl acetate and crystallization of polypropylene on the mechanical properties of i‐PP/EVA blends

Effect of flexibility of ethylene vinyl acetate and crystallization of polypropylene on the mechanical properties of i‐PP/EVA blends

The mechanical behavior of blends of polyethylene, polypropylene, and an ethylene–propylene block copolymer at −20°C

The effect of spherical inclusions on the ultimate strength of polymer composites

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