Understanding the electrical, thermal and mechanical properties of LDPE-clay nanocomposites

The performance of low-density polyethylene (LDPE) clay nanocomposites was analysed. The inclusion of nano montmorillonite (MMT) clay in LDPE material has significantly increased the contact angle, corona ageing resistance, water droplet initiated corona inception voltage and surface discharge incep...

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Bibliographic Details
Published in:Micro & nano letters 2019-05, Vol.14 (6), p.650-655
Main Authors: Mallayan, Sundara, Raja Prabhu, Ramachandran, Desai, Belaguppa Manjunath Ashwin, Velmurugan, Ramachandran, Sarathi, Ramanujam, Rao, Burjupati Nageshwar
Format: Article
Language:English
Subjects:
Clay
composite insulating materials
Contact angle
corona
corona ageing resistance
crater depth
Decay rate
dielectric losses
discharge resistance
drops
dynamical mechanical analysis
elastic moduli
Electric contacts
Electric potential
electrical properties
filled polymers
Laser induced breakdown spectroscopy
LDPE material
LDPE‐clay nanocomposites
LDPE–MMT clay composites
Low density polyethylenes
low‐density polyethylene clay nanocomposites
Mechanical analysis
Mechanical properties
modified trap distribution characteristics
Montmorillonite
Nanocomposites
nanofiller inclusion
nanomechanics
nanomontmorillonite clay
partial discharges
Plasma temperature
polyethylene insulation
reduced tan (δ)
Storage modulus
Surface charge
surface charge decay rate
surface charging
surface discharge inception voltage
thermal properties
Thermodynamic properties
Thermomechanical properties
water droplet initiated corona inception voltage
Water drops
Water resistance
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Description
Summary:The performance of low-density polyethylene (LDPE) clay nanocomposites was analysed. The inclusion of nano montmorillonite (MMT) clay in LDPE material has significantly increased the contact angle, corona ageing resistance, water droplet initiated corona inception voltage and surface discharge inception voltage of the composites. The surface charge decay rate of the samples significantly reduced on the inclusion of clay indicating modified trap distribution characteristics due to the inclusion of the filler. Dynamical mechanical analysis indicates increased storage modulus and reduced tan (δ) due to nanofillers inclusion. Laser-induced breakdown spectroscopy indicates that on inclusion of nanofillers the plasma temperature increases and crater depth decreases. In particular, increased discharge resistance, improved thermomechanical properties are observed with LDPE–MMT clay composites compared to pure LDPE.
ISSN:1750-0443
1750-0443
DOI:10.1049/mnl.2018.5702