Characterization of clay-modified thermoset polymers under various environmental conditions for the use in high-voltage power pylons

Mathias Kliem, Jan Høgsberg, Qian Wang, Martin Dannemann

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

3 Citationer (Scopus)
69 Downloads (Pure)

Resumé

The effect of nanoclay on various material properties like damping and strength of typical thermoset polymers, such as epoxy and vinyl ester, was investigated. Different environmental conditions typical for high-voltage transmission pylons made of composite materials were taken into account. Resin samples were prepared with various clay weight fractions ranging from 0% to 3%. Scanning electron microscopy, transmission electron microscopy, X-ray diffraction and rheological analysis were used to study the morphology and the structure of the nanocomposites. For all nanoclay-modified thermoset polymers, the morphology was found to be of exfoliated structure mainly. Static, uniaxial tensile tests showed that the addition of nanoclay to thermoset polymers led to a beneficial effect on the stiffness, whereas the tensile strength and ductility significantly decreased. When exposed to different environmental conditions, nanoclay was found to have a positive influence on the dynamic properties, analysed by a dynamic mechanical thermal analysis. The addition of nanoclay to the thermoset resin led to an increase of the damping properties by up to 28% for vinyl ester and up to 6% for epoxy at −20°C. The dielectric properties were evaluated by electrical breakdown strength tests resulting in 11% better insulating behaviour for nanoclay-modified vinyl ester.
OriginalsprogEngelsk
TidsskriftAdvances in Mechanical Engineering
Vol/bind9
Udgave nummer5
Sider (fra-til)1-16
Antal sider16
ISSN1687-8132
DOI
StatusUdgivet - maj 2017

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Thermosets
Clay
Esters
Electric potential
Polymers
Resins
Damping
Dielectric properties
Thermoanalysis
Ductility
Materials properties
Nanocomposites
Tensile strength
Stiffness
Transmission electron microscopy
X ray diffraction
Scanning electron microscopy
Composite materials

Citer dette

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title = "Characterization of clay-modified thermoset polymers under various environmental conditions for the use in high-voltage power pylons",
abstract = "The effect of nanoclay on various material properties like damping and strength of typical thermoset polymers, such as epoxy and vinyl ester, was investigated. Different environmental conditions typical for high-voltage transmission pylons made of composite materials were taken into account. Resin samples were prepared with various clay weight fractions ranging from 0{\%} to 3{\%}. Scanning electron microscopy, transmission electron microscopy, X-ray diffraction and rheological analysis were used to study the morphology and the structure of the nanocomposites. For all nanoclay-modified thermoset polymers, the morphology was found to be of exfoliated structure mainly. Static, uniaxial tensile tests showed that the addition of nanoclay to thermoset polymers led to a beneficial effect on the stiffness, whereas the tensile strength and ductility significantly decreased. When exposed to different environmental conditions, nanoclay was found to have a positive influence on the dynamic properties, analysed by a dynamic mechanical thermal analysis. The addition of nanoclay to the thermoset resin led to an increase of the damping properties by up to 28{\%} for vinyl ester and up to 6{\%} for epoxy at −20°C. The dielectric properties were evaluated by electrical breakdown strength tests resulting in 11{\%} better insulating behaviour for nanoclay-modified vinyl ester.",
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Characterization of clay-modified thermoset polymers under various environmental conditions for the use in high-voltage power pylons. / Kliem, Mathias; Høgsberg, Jan; Wang, Qian; Dannemann, Martin.

I: Advances in Mechanical Engineering, Bind 9, Nr. 5, 05.2017, s. 1-16.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Characterization of clay-modified thermoset polymers under various environmental conditions for the use in high-voltage power pylons

AU - Kliem, Mathias

AU - Høgsberg, Jan

AU - Wang, Qian

AU - Dannemann, Martin

PY - 2017/5

Y1 - 2017/5

N2 - The effect of nanoclay on various material properties like damping and strength of typical thermoset polymers, such as epoxy and vinyl ester, was investigated. Different environmental conditions typical for high-voltage transmission pylons made of composite materials were taken into account. Resin samples were prepared with various clay weight fractions ranging from 0% to 3%. Scanning electron microscopy, transmission electron microscopy, X-ray diffraction and rheological analysis were used to study the morphology and the structure of the nanocomposites. For all nanoclay-modified thermoset polymers, the morphology was found to be of exfoliated structure mainly. Static, uniaxial tensile tests showed that the addition of nanoclay to thermoset polymers led to a beneficial effect on the stiffness, whereas the tensile strength and ductility significantly decreased. When exposed to different environmental conditions, nanoclay was found to have a positive influence on the dynamic properties, analysed by a dynamic mechanical thermal analysis. The addition of nanoclay to the thermoset resin led to an increase of the damping properties by up to 28% for vinyl ester and up to 6% for epoxy at −20°C. The dielectric properties were evaluated by electrical breakdown strength tests resulting in 11% better insulating behaviour for nanoclay-modified vinyl ester.

AB - The effect of nanoclay on various material properties like damping and strength of typical thermoset polymers, such as epoxy and vinyl ester, was investigated. Different environmental conditions typical for high-voltage transmission pylons made of composite materials were taken into account. Resin samples were prepared with various clay weight fractions ranging from 0% to 3%. Scanning electron microscopy, transmission electron microscopy, X-ray diffraction and rheological analysis were used to study the morphology and the structure of the nanocomposites. For all nanoclay-modified thermoset polymers, the morphology was found to be of exfoliated structure mainly. Static, uniaxial tensile tests showed that the addition of nanoclay to thermoset polymers led to a beneficial effect on the stiffness, whereas the tensile strength and ductility significantly decreased. When exposed to different environmental conditions, nanoclay was found to have a positive influence on the dynamic properties, analysed by a dynamic mechanical thermal analysis. The addition of nanoclay to the thermoset resin led to an increase of the damping properties by up to 28% for vinyl ester and up to 6% for epoxy at −20°C. The dielectric properties were evaluated by electrical breakdown strength tests resulting in 11% better insulating behaviour for nanoclay-modified vinyl ester.

KW - Nanoclay

KW - Thermoset polymers

KW - Material testing

KW - Environmental ageing

U2 - 10.1177/1687814017698890

DO - 10.1177/1687814017698890

M3 - Journal article

VL - 9

SP - 1

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JO - Advances in Mechanical Engineering

JF - Advances in Mechanical Engineering

SN - 1687-8132

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