Effect of Carbon Nanotubes on Properties of Graphite/Carbon Black/Polypropylene Nanocomposites
Abstract. High chemical corrosion, low manufacturing cost and light of total mass of bipolar plate in Proton Exchange Membrane Fuel Cell (PEMFC) lead most of the PEMFC’s researchers over the world attracted their interest to replace pure graphite or metal based bipolar plate with conductive polym...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Trans Tech Publications, Switzerland
2013
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| Subjects: | |
| Online Access: | http://eprints.utem.edu.my/id/eprint/10923/2/AMR.795.29.pdf http://eprints.utem.edu.my/id/eprint/10923/ |
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| Summary: | Abstract. High chemical corrosion, low manufacturing cost and light of total mass of bipolar plate
in Proton Exchange Membrane Fuel Cell (PEMFC) lead most of the PEMFC’s researchers over the
world attracted their interest to replace pure graphite or metal based bipolar plate with conductive
polymer composites (CPCs) bipolar plate. CPCs is fabricate from the mixed of conductive fillers
such as and Graphite (G) andCarbon Black (CB) had been incorporated in Polypropylene (PP)
matrix for fabrication of electrical conductive polymer composite plate. Most researchers reported
only at high loading of fillers (more than 90 wt.%), are gave electrical conductivity above 100
S/cm, which is target from Department of Energy (USA). Higher loading of fillers cause change in
rheological properties and increase the difficulties in polymer processing. Thus will decreasing the
electrical and mechanical properties of CPCs as bipolar plate. Therefore, in this study carbon
nanotubes (CNTs) which have 1000 time electrical conductivity than copper wire are introduced
into G/CB/PP composite to compensate above problems. But the main problems of CNTs, at high
loading it tend to agglomerate and thus will affect the properties of CPCs. So that, small amount of
CNTs which is 0.2, 0.4, 0.6 and 0.8 wt.% will be added into G/CB/PP composite. But weight
percentage of CB and PP has been fixed which is 25 wt.% and 20 wt.% respectively and the weight
percentage of G will various from 55 wt.% to 54.2 wt.% according to CNTs loading. The result
shows that the G/CB/CNTs/PP composite with 0.2 wt% CNTs has the higher electrical conductivity
295.78 S/cm. |
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