Effect Of Carbon Nanotube On The Properties Of Graphite-Carbon Black-Polypropylene Composite For Bipolar Plate

Dainil, Nur Fitrah (2019) Effect Of Carbon Nanotube On The Properties Of Graphite-Carbon Black-Polypropylene Composite For Bipolar Plate. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Nowadays, pure-graphite bipolar plate had been targeted replace to conductive polymer composite (CPCs). This is because CPCs bipolar plate has low manufacturing cost and low density in PEMFCs. The first objective is to study the effect of the CNTs on the properties of G/CB/PP composite. While second objective is to determine the critical loading of CNTs in G/CB/PP composite. In this research, the ratio of filler (G/CNTs) and binder (PP) is fixed at 80:20. The CB fixed at 25%, 10 grams. The additional small amount of CNTs which is 0, 1, 2, 3 wt% (calculate from the total weight of filler 80%) respectively. Before hot press moulding, the G/CB/CNT need to mix with ball mill. Then mix with PP also by ball mill machine in order to determine the effect of CNTs in G/CNTs/PP composite such as electrical and mechanical properties. Moreover, there are several tests to obtain the result which is electrical conductivity, flexural test, density test, shore hardness test (type D) and microstructure analysis. The results show that 2 wt% of CNTs at electrical conductivity test has the highest electrical conductivity which is 124.7544 S/cm. Result of flexural test also has 41.92 MPa for 1wt% of CNTs. 3 wt% of CNTs which has the lowest shore hardness, 1 wt% has the highest result of shore hardness which is 74.2 Shore-D, while increase weight loading of CNTs, decrease of density of composite in result by densimeter.

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