Electrophoretic deposition and heat treatment of steel-supported pvdf-graphite composite film

Lau, Kok Tee and Ab Razak, Mohd Hafrez Razi and Kok, Swee Leong and Zaimi, Muhammad and Abd Rashid , Mohd Warikh and Mohamad, Noraiham and Azam, Mohd Asyadi (2015) Electrophoretic deposition and heat treatment of steel-supported pvdf-graphite composite film. Applied Mechanics and Materials, 761. pp. 412-416.

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Polymeric poly(vinyliden fluoride) (PVDF) is nontoxic. It possesses a better mechanical flexibility and requires a lower synthesis temperature, as compared to the piezoceramic counterparts. In order to achieve a competitive advantage against the current piezoelectric sensor, graphite could replace a more expensive silver-palladium as the electrodes for the piezoelectric PVDF. This paper reports the preliminary results on the synthesis of steel-supported graphite- PVDF/PVDF/graphite-PVDF composite films using the two-step process, consisted of the electrophoretic deposition (EPD) and heat treatment. The composite films were characterized by means of the optical microscopy, scanning electron microscopy, X-ray diffraction and differential scanning calorimetry. The heat treated graphite-PVDF electrode deposited by EPD provides adequate mechanical strength for the subsequent depositions of pure PVDF layer and the second layer of graphite-PVDF composite electrode. However, the final heat treatment stage did not eliminate the fine and large cracks of the composite film, which might be attributed to high residue stresses and weak bonding between graphite and PVDF particles in the post-heat treated composite films. Nevertheless, the increase in final heat treatment temperature of the composite film at Stage 3 improved the graphite and PVDF grain alignment, as well as its crystallinity.

Item Type: Article
Uncontrolled Keywords: piezoelectric material, electrode, non-aqueous suspension, cantilever-based accelerometer, sequential deposition
Subjects: T Technology > TS Manufactures
Divisions: Faculty of Mechanical Engineering
Depositing User: Dr. Swee Leong Kok
Date Deposited: 29 Sep 2015 03:53
Last Modified: 29 Sep 2015 03:53
URI: http://eprints.utem.edu.my/id/eprint/14861
Statistic Details: View Download Statistic

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