Effect of filler particle shape on plastic-elastic mechanical behavior of high density poly(ethylene)/mica and poly(ethylene)/wollastonite composites

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Effect of filler particle shape on plastic-elastic mechanical behavior of high density poly(ethylene)/mica and poly(ethylene)/wollastonite composites. / Lapčík, Lubomír; Maňas, David; Lapčíková, Barbora; Vašina, Martin; Staněk, Michal; Čépe, Klára; Vlček, Jakub; Waters, Kristian E.; Greenwood, Richard W.; Rowson, Neil A.

In: Composites Part B: Engineering, Vol. 141, 15.05.2018, p. 92-99.

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Lapčík, Lubomír ; Maňas, David ; Lapčíková, Barbora ; Vašina, Martin ; Staněk, Michal ; Čépe, Klára ; Vlček, Jakub ; Waters, Kristian E. ; Greenwood, Richard W. ; Rowson, Neil A. / Effect of filler particle shape on plastic-elastic mechanical behavior of high density poly(ethylene)/mica and poly(ethylene)/wollastonite composites. In: Composites Part B: Engineering. 2018 ; Vol. 141. pp. 92-99.

Bibtex

@article{69c43adf5d2740769b69ba217e6dd841,
title = "Effect of filler particle shape on plastic-elastic mechanical behavior of high density poly(ethylene)/mica and poly(ethylene)/wollastonite composites",
abstract = "It was found in this study that both fillers (mica and wollastonite) trigger an increase in Young's modulus of elasticity with increasing filler concentration in a HDPE composites matrix. In the case of HDPE/mica the same improvement was also found for the upper yield point vs. filler concentration dependencies indicating higher stiffness. However, for the HDPE/wollastonite composites the opposite trend was observed, i.e. a decrease of the upper yield point and strain at break. These findings were also confirmed by mechanical vibration damping testing where there was found a more intense shift of the first resonance frequency peak position to higher frequencies with increasing filler concentrations for HDPE/mica in comparison to HDPE/wollastonite composites. Both composites exhibited decreasing strain at break with increasing filler concentration indicating a more brittle mechanical behavior in comparison to the virgin HDPE polymer matrix. However, for HDPE/wollastonite composites at 5 w. % filler concentration a 15% increase in the magnitude of the strain at break was found indicating an increase in ductility at 50 mm/min deformation rate. Fracture toughness measurements show, that both studied fillers function as the stress concentrators in the HDPE polymer matrix, which was reflected in the exponentially decreasing dependencies of the fracture toughness vs. filler concentrations. SEM analysis of the fracture surfaces show typical elongation bands of high plasticity deformation regions characteristic of typical shearing bands, interpenetrated with cavities created around filler particles. Thermal analysis data showed for HDPE/mica a strong increase of the crystallinity with increasing filler concentration, however in the case of HDPE/wollastonite the opposite effect of a higher amorphous polymer phase content was found.",
keywords = "HDPE, Impact testing, Mica, SEM, Tensile testing, Thermal analysis, Vibration damping, Wollastonite",
author = "Lubom{\'i}r Lap{\v c}{\'i}k and David Ma{\v n}as and Barbora Lap{\v c}{\'i}kov{\'a} and Martin Va{\v s}ina and Michal Stan{\v e}k and Kl{\'a}ra {\v C}{\'e}pe and Jakub Vl{\v c}ek and Waters, {Kristian E.} and Greenwood, {Richard W.} and Rowson, {Neil A.}",
year = "2018",
month = may,
day = "15",
doi = "10.1016/j.compositesb.2017.12.035",
language = "English",
volume = "141",
pages = "92--99",
journal = "Composites Part B: Engineering",
issn = "1359-8368",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Effect of filler particle shape on plastic-elastic mechanical behavior of high density poly(ethylene)/mica and poly(ethylene)/wollastonite composites

AU - Lapčík, Lubomír

AU - Maňas, David

AU - Lapčíková, Barbora

AU - Vašina, Martin

AU - Staněk, Michal

AU - Čépe, Klára

AU - Vlček, Jakub

AU - Waters, Kristian E.

AU - Greenwood, Richard W.

AU - Rowson, Neil A.

PY - 2018/5/15

Y1 - 2018/5/15

N2 - It was found in this study that both fillers (mica and wollastonite) trigger an increase in Young's modulus of elasticity with increasing filler concentration in a HDPE composites matrix. In the case of HDPE/mica the same improvement was also found for the upper yield point vs. filler concentration dependencies indicating higher stiffness. However, for the HDPE/wollastonite composites the opposite trend was observed, i.e. a decrease of the upper yield point and strain at break. These findings were also confirmed by mechanical vibration damping testing where there was found a more intense shift of the first resonance frequency peak position to higher frequencies with increasing filler concentrations for HDPE/mica in comparison to HDPE/wollastonite composites. Both composites exhibited decreasing strain at break with increasing filler concentration indicating a more brittle mechanical behavior in comparison to the virgin HDPE polymer matrix. However, for HDPE/wollastonite composites at 5 w. % filler concentration a 15% increase in the magnitude of the strain at break was found indicating an increase in ductility at 50 mm/min deformation rate. Fracture toughness measurements show, that both studied fillers function as the stress concentrators in the HDPE polymer matrix, which was reflected in the exponentially decreasing dependencies of the fracture toughness vs. filler concentrations. SEM analysis of the fracture surfaces show typical elongation bands of high plasticity deformation regions characteristic of typical shearing bands, interpenetrated with cavities created around filler particles. Thermal analysis data showed for HDPE/mica a strong increase of the crystallinity with increasing filler concentration, however in the case of HDPE/wollastonite the opposite effect of a higher amorphous polymer phase content was found.

AB - It was found in this study that both fillers (mica and wollastonite) trigger an increase in Young's modulus of elasticity with increasing filler concentration in a HDPE composites matrix. In the case of HDPE/mica the same improvement was also found for the upper yield point vs. filler concentration dependencies indicating higher stiffness. However, for the HDPE/wollastonite composites the opposite trend was observed, i.e. a decrease of the upper yield point and strain at break. These findings were also confirmed by mechanical vibration damping testing where there was found a more intense shift of the first resonance frequency peak position to higher frequencies with increasing filler concentrations for HDPE/mica in comparison to HDPE/wollastonite composites. Both composites exhibited decreasing strain at break with increasing filler concentration indicating a more brittle mechanical behavior in comparison to the virgin HDPE polymer matrix. However, for HDPE/wollastonite composites at 5 w. % filler concentration a 15% increase in the magnitude of the strain at break was found indicating an increase in ductility at 50 mm/min deformation rate. Fracture toughness measurements show, that both studied fillers function as the stress concentrators in the HDPE polymer matrix, which was reflected in the exponentially decreasing dependencies of the fracture toughness vs. filler concentrations. SEM analysis of the fracture surfaces show typical elongation bands of high plasticity deformation regions characteristic of typical shearing bands, interpenetrated with cavities created around filler particles. Thermal analysis data showed for HDPE/mica a strong increase of the crystallinity with increasing filler concentration, however in the case of HDPE/wollastonite the opposite effect of a higher amorphous polymer phase content was found.

KW - HDPE

KW - Impact testing

KW - Mica

KW - SEM

KW - Tensile testing

KW - Thermal analysis

KW - Vibration damping

KW - Wollastonite

UR - http://www.scopus.com/inward/record.url?scp=85039768890&partnerID=8YFLogxK

U2 - 10.1016/j.compositesb.2017.12.035

DO - 10.1016/j.compositesb.2017.12.035

M3 - Article

AN - SCOPUS:85039768890

VL - 141

SP - 92

EP - 99

JO - Composites Part B: Engineering

JF - Composites Part B: Engineering

SN - 1359-8368

ER -