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Electrical Properties of Polyurethane Graphite Composites

Polyurethane (PU) is one of the industrially important polymers which offers a combination of unique properties and meets a wide range of demanding application. Electrical conductivity and dielectric properties of polyurethane/graphite composites were investigated in this paper. Moisture Cured Po...

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Main Author: Abd Majid, Wan Haliza
Format: Article
Language:English
Published: 2008
Subjects:
QC Physics
Online Access:http://eprints.um.edu.my/5728/1/Electrical_properties_of_polyurethane_graphite_composites.pdf
http://eprints.um.edu.my/5728/
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spelling my.um.eprints.57282019-12-18T08:01:38Z http://eprints.um.edu.my/5728/ Electrical Properties of Polyurethane Graphite Composites Abd Majid, Wan Haliza QC Physics Polyurethane (PU) is one of the industrially important polymers which offers a combination of unique properties and meets a wide range of demanding application. Electrical conductivity and dielectric properties of polyurethane/graphite composites were investigated in this paper. Moisture Cured Polyurethane was prepared with varying NCO/OH ratio 2.0, 2.2 and 2.4 by polyoxytetramethylene glycol (PTMO) Mw 2000 and Toluene diisocyanate (TDI). Graphite powder of 0 to 12.5 vol% was dispersed in PU to form electro conductive composites. Percolation concentrations were determined to be as (9±1), (9±2) and (10±3) vol. % for the NCO/OH ratio of 2.0, 2.2 and 2.4 respectively. It shows that percolation concentration does not have significant change as the NCO/OH ratio increases. The dielectric properties of the composites were investigated in the frequency range of 1 KHz to 10MHz. It was found that PU composites became electro-conductive when filled with 9 to 10.0% of the filler and support well the dc conductivity results. 2008 Article PeerReviewed application/pdf en http://eprints.um.edu.my/5728/1/Electrical_properties_of_polyurethane_graphite_composites.pdf Abd Majid, Wan Haliza (2008) Electrical Properties of Polyurethane Graphite Composites. Jurnal Fizik Malaysia.
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
language English
topic QC Physics
spellingShingle QC Physics
Abd Majid, Wan Haliza
Electrical Properties of Polyurethane Graphite Composites
description Polyurethane (PU) is one of the industrially important polymers which offers a combination of unique properties and meets a wide range of demanding application. Electrical conductivity and dielectric properties of polyurethane/graphite composites were investigated in this paper. Moisture Cured Polyurethane was prepared with varying NCO/OH ratio 2.0, 2.2 and 2.4 by polyoxytetramethylene glycol (PTMO) Mw 2000 and Toluene diisocyanate (TDI). Graphite powder of 0 to 12.5 vol% was dispersed in PU to form electro conductive composites. Percolation concentrations were determined to be as (9±1), (9±2) and (10±3) vol. % for the NCO/OH ratio of 2.0, 2.2 and 2.4 respectively. It shows that percolation concentration does not have significant change as the NCO/OH ratio increases. The dielectric properties of the composites were investigated in the frequency range of 1 KHz to 10MHz. It was found that PU composites became electro-conductive when filled with 9 to 10.0% of the filler and support well the dc conductivity results.
format Article
author Abd Majid, Wan Haliza
author_facet Abd Majid, Wan Haliza
author_sort Abd Majid, Wan Haliza
title Electrical Properties of Polyurethane Graphite Composites
title_short Electrical Properties of Polyurethane Graphite Composites
title_full Electrical Properties of Polyurethane Graphite Composites
title_fullStr Electrical Properties of Polyurethane Graphite Composites
title_full_unstemmed Electrical Properties of Polyurethane Graphite Composites
title_sort electrical properties of polyurethane graphite composites
publishDate 2008
url http://eprints.um.edu.my/5728/1/Electrical_properties_of_polyurethane_graphite_composites.pdf
http://eprints.um.edu.my/5728/
_version_ 1654960614737444864
score 13.211869

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