Effect Of Binder And Fillers Ratio On The Properties Of Graphite/Carbon Black/Epoxy Composite For Bipolar Plate

Tengku Asmazatul Adawiah, Tengku Abdul Kadir (2015) Effect Of Binder And Fillers Ratio On The Properties Of Graphite/Carbon Black/Epoxy Composite For Bipolar Plate. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text (24 Pages) Effect Of Binder And Fillers Ratio On The Properties Of Graphitecarbon Blackepoxy Composite For Bipolar Plate 24 Pages.pdf - Submitted Version Download (257kB)

Abstract

Highly conductive carbon-filled epoxy composites were developed for manufacturing bipolar plates in proton exchange membrane fuel cells (PEMFC). In PEMFC, bipolar plate is one of the main components. The objectives of the research are to study the effect of binder and filler ratio of the properties of Gr/CB/EP composite and determine the suitable loading in Gr/CB/EP composite. The performance of PEMFC is depends on the types of material used to fabricate bipolar plate. The different ratio of graphite (Gr) and carbon black (CB) has been mixed with epoxy to fabricate the conductive composite bipolar plate. The sample is prepared with a weight percentage ratio has been fixed where 70-80% for fillers and 20-30% for binder. The filler materials are Gr and CB as second filler whereas the epoxy as the binder. For fillers materials, the weight percentage of CB will be varied from 5% up to 20% from the total percentage of filler. The sample preparation begin with the material will undergo pre-mixing process in the ball mill machine followed by mixing process using the high speed of mixer. The conductive composite will be fabricated by using motorise hydraulic moulding test press. Properties of the bipolar plate such as electrical conductivity, flexural strength, hardness and bulk density will be measured. The Taguchi’s orthogonal array has been used as a design of experiment (DOE) while the electrical conductivity was measured using four point probes and flexural strength was measured using three point test according to ASTM D638. The optimization parameter had been analyze with Taguchi Design and the fabricated sample has been tested the electrical conductivity, bulk density and shore hardness testing. All the results have been achieved the DOE requirements for bipolar plate. The result for only electrical conductivity is higher than previous finding research which is 108.45 S/cm and fulfil the DOE requirement.

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