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...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
2008
|
| Subjects: | |
| Online Access: | http://eprints.um.edu.my/5728/1/Electrical_properties_of_polyurethane_graphite_composites.pdf |
| _version_ | 1796945332732428288 |
|---|---|
| author | Abd Majid, Wan Haliza |
| author_facet | Abd Majid, Wan Haliza |
| author_sort | Abd Majid, Wan Haliza |
| collection | UM |
| 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.
|
| first_indexed | 2024-03-06T05:15:05Z |
| format | Article |
| id | um.eprints-5728 |
| institution | Universiti Malaya |
| language | English |
| last_indexed | 2024-03-06T05:15:05Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | 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. |
| spellingShingle | QC Physics Abd Majid, Wan Haliza Electrical Properties of Polyurethane Graphite Composites |
| title | 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_short | Electrical Properties of Polyurethane Graphite Composites |
| title_sort | electrical properties of polyurethane graphite composites |
| topic | QC Physics |
| url | http://eprints.um.edu.my/5728/1/Electrical_properties_of_polyurethane_graphite_composites.pdf |
| work_keys_str_mv | AT abdmajidwanhaliza electricalpropertiesofpolyurethanegraphitecomposites |