Studies On The Processing And Properties Of Conductive Single Fillers And Hybrid Fillers Filled Silicone Elastomer Composites
Multi-walled carbon nanotubes (MWCNTs) filled poly(dimethyl siloxane) (PDMS) composites were produced via two different processing methods. The first method is the solution mixing method where MWCNT were dispersed in a solvent using an ultrasonicator before mechanically mixed with PDMS. The secon...
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| Format: | Thesis |
| Language: | English |
| Published: |
2012
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| Online Access: | http://eprints.usm.my/46248/1/KENNETH%20KONG%20THEAN%20SOON_HJ.pdf |
| _version_ | 1825905524604928000 |
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| author | Kong, Kenneth Thean Soon |
| author_facet | Kong, Kenneth Thean Soon |
| author_sort | Kong, Kenneth Thean Soon |
| collection | USM |
| description | Multi-walled carbon nanotubes (MWCNTs) filled poly(dimethyl siloxane)
(PDMS) composites were produced via two different processing methods. The first
method is the solution mixing method where MWCNT were dispersed in a solvent
using an ultrasonicator before mechanically mixed with PDMS. The second method
entails the use of a mini-extruder to disperse and mix the MWCNTs and PDMS.
Scanning Electron Microscopy (SEM) micrographs revealed that samples produced
by mini-extruder exhibited shorter nanotubes, but better nanotubes dispersion
compared with solution mixing. The composites prepared using the mini-extruder
was found to have higher tensile strength and thermal conductivity. On the other
hand, the composites prepared via solution mixing show higher electrical
conductivity and better thermal stability. Functionalization of nanotubes with –OH
and –COOH improves the tensile strength, thermal conductivity and thermal stability
but does not contribute to the electrical conductivity enhancement. The properties of
PDMS/exfoliated graphite nanoplatelet (xGnP) are comparable to that of
PDMS/MWCNT. Composites filled with 4 wt% hybrid fillers with an
xGnP/MWCNT-OH ratio of 3/1 show the highest thermal conductivity, electrical
conductivity, and the lowest coefficient of thermal expansion. In general, the hybrid
fillers can be used to produce composites with improved properties at lower cost due
to the cheaper cost of xGnP. |
| first_indexed | 2024-03-06T15:35:45Z |
| format | Thesis |
| id | usm.eprints-46248 |
| institution | Universiti Sains Malaysia |
| language | English |
| last_indexed | 2024-03-06T15:35:45Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | usm.eprints-462482020-02-18T01:32:57Z http://eprints.usm.my/46248/ Studies On The Processing And Properties Of Conductive Single Fillers And Hybrid Fillers Filled Silicone Elastomer Composites Kong, Kenneth Thean Soon TN1-997 Mining engineering. Metallurgy Multi-walled carbon nanotubes (MWCNTs) filled poly(dimethyl siloxane) (PDMS) composites were produced via two different processing methods. The first method is the solution mixing method where MWCNT were dispersed in a solvent using an ultrasonicator before mechanically mixed with PDMS. The second method entails the use of a mini-extruder to disperse and mix the MWCNTs and PDMS. Scanning Electron Microscopy (SEM) micrographs revealed that samples produced by mini-extruder exhibited shorter nanotubes, but better nanotubes dispersion compared with solution mixing. The composites prepared using the mini-extruder was found to have higher tensile strength and thermal conductivity. On the other hand, the composites prepared via solution mixing show higher electrical conductivity and better thermal stability. Functionalization of nanotubes with –OH and –COOH improves the tensile strength, thermal conductivity and thermal stability but does not contribute to the electrical conductivity enhancement. The properties of PDMS/exfoliated graphite nanoplatelet (xGnP) are comparable to that of PDMS/MWCNT. Composites filled with 4 wt% hybrid fillers with an xGnP/MWCNT-OH ratio of 3/1 show the highest thermal conductivity, electrical conductivity, and the lowest coefficient of thermal expansion. In general, the hybrid fillers can be used to produce composites with improved properties at lower cost due to the cheaper cost of xGnP. 2012-02 Thesis NonPeerReviewed application/pdf en http://eprints.usm.my/46248/1/KENNETH%20KONG%20THEAN%20SOON_HJ.pdf Kong, Kenneth Thean Soon (2012) Studies On The Processing And Properties Of Conductive Single Fillers And Hybrid Fillers Filled Silicone Elastomer Composites. Masters thesis, Universiti Sains Malaysia. |
| spellingShingle | TN1-997 Mining engineering. Metallurgy Kong, Kenneth Thean Soon Studies On The Processing And Properties Of Conductive Single Fillers And Hybrid Fillers Filled Silicone Elastomer Composites |
| title | Studies On The Processing And Properties Of Conductive Single Fillers And Hybrid Fillers Filled Silicone Elastomer Composites |
| title_full | Studies On The Processing And Properties Of Conductive Single Fillers And Hybrid Fillers Filled Silicone Elastomer Composites |
| title_fullStr | Studies On The Processing And Properties Of Conductive Single Fillers And Hybrid Fillers Filled Silicone Elastomer Composites |
| title_full_unstemmed | Studies On The Processing And Properties Of Conductive Single Fillers And Hybrid Fillers Filled Silicone Elastomer Composites |
| title_short | Studies On The Processing And Properties Of Conductive Single Fillers And Hybrid Fillers Filled Silicone Elastomer Composites |
| title_sort | studies on the processing and properties of conductive single fillers and hybrid fillers filled silicone elastomer composites |
| topic | TN1-997 Mining engineering. Metallurgy |
| url | http://eprints.usm.my/46248/1/KENNETH%20KONG%20THEAN%20SOON_HJ.pdf |
| work_keys_str_mv | AT kongkenneththeansoon studiesontheprocessingandpropertiesofconductivesinglefillersandhybridfillersfilledsiliconeelastomercomposites |