Optimization Of Process Parameters For
Electrophoretic Deposition In CNTs/carbon
Fiber Hybrid Composites
Author(s)
Y. Q. Wang, J. H. Byun, B. S. Kim & J. I. Song
Abstract
Carbon nanotubes (CNTs) have attracted a great deal of interest in the
development of high-performance engineering composites, due to their
exceptional physical, mechanical, electronic and thermal properties.
Incorporation of CNTs into polymer has shown great improvements in the
functional property, however, the enhancement of the mechanical property was
insignificant compared with that of micro-sized fiber reinforced polymers. In
order to realize the application of composites for structural and multifunctional
parts, it is necessary to develop hybrid composites with micro- and nano-sized
reinforcements. CNT reinforced hybrid composites have been studied in several
ways: the addition of CNTs to a matrix with various dispersion methods, the
growth of CNTs on substrate reinforcements, CNT sprays, etc. In this study, the
electrophoresis deposition (EPD) method has been applied to deposit CNTs on a
carbon fabric. By applying an electric field between a copper plate and a
substrate, the negatively charged CNTs in a suspension move toward a carbon
fabric. The controllable parameters in the EPD process are identified as the
deposition time, the voltage, the contents of the CNTs, and the distance between
the copper plate and the carbon fabric. In order to determine the optimal process
conditions, the Taguchi method for the statistical design of experiment (DOE)
has been utilized. Since the interlaminar shear strength (ILSS) of the hybrid
composites is associated with the amount and the degree of distribution of the
CNTs, it was selected as the response for the analysis of means (ANOM) and
signal to noise (S/N) ratio. The ILSS was measured by short-beam test according
Keywords
carbon nanotubes, electrophoretic deposition, interlaminar shear strength, optimization, Taguchi method, signal to noise ratio
Related Book
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