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Electrical Conduction Mechanisms in Synthesized Ethylene Propylene Diene Monomer Rubber Loaded with High Abrasion Furnace Carbon Black

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Title Electrical Conduction Mechanisms in Synthesized Ethylene Propylene Diene Monomer Rubber Loaded with High Abrasion Furnace Carbon Black
 
Creator Alfaramawi, K
Abboudy, S
Abulnasr, L
Haridy, A O
 
Subject EPDM rubber
HAF carbon black
Composites
Percolation
Resistivity
Aggregates
Variable range hopping
Metal-insulator transition
 
Description 731-739
thylene Propylene Diene Monomer (EPDM) rubber filled with High Abrasion Furnace (HAF) carbon black at various
concentrations (30, 40, 50, 80 phr) were synthesized and electrically characterized. The structure of the synthesized
EPDM/HAF composites was studied by XRD and the surface morphology was analyzed by SEM. The XRD patterns
revealed that the structure was partially amorphous with some crystalline phases. SEM micrographs showed a set of carbon
black aggregates with different dimensions depending on the amount of carbon black filler. The electrical resistivity
(conductivity) of the composites was investigated as a function of temperature and filler content. The electrical conductivity
was greatly influenced by both the temperature and carbon black filler content. The conduction mechanisms were analyzed
at different temperature regions. A variable range hopping process was suggested to explain the temperature dependence of
the conductivity of low mass fraction carbon black. At higher carbon black concentration, the behavior of the conductivity
is of a semiconductor-like and a metallic-like behavior. The concept of metal- insulator transition was suggested to explain
the conductivity of the composites.
 
Date 2021-12-16T11:48:02Z
2021-12-16T11:48:02Z
2021-11
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscair.res.in/handle/123456789/58627
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJPAP Vol.59(11) [November 2021]