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Interfacial improvement of carbon fiber/epoxy composites by using electrospray carbon nanotube deposition
conference contribution
posted on 2013-01-01, 00:00 authored by Sulley LiSulley Li, J Church, A Kafi, Minoo NaebeMinoo Naebe, Bronwyn FoxCarbon nanotubes (CNTs) were coated on unsized carbon
fibers using the electrospray deposition method. The
overall depositing process resulted in a multi-scale CNThybridized structure compared to the original primary
carbon fibers. The wetting behavior between fibers and
epoxy resin was tested using contact angle measurements
for drop-on-fiber systems and indicated good wettability.
Single fiber fragmentation tests were conducted on
hierarchical fiber/epoxy model composites, demonstrating
a significant (~45%) improvement of the apparent
interfacial shear strength (IFSS) over the baseline
composites. The result is associated with improved stress
transfer between the carbon fibers and surrounding matrix
through the coated CNT layer.
fibers using the electrospray deposition method. The
overall depositing process resulted in a multi-scale CNThybridized structure compared to the original primary
carbon fibers. The wetting behavior between fibers and
epoxy resin was tested using contact angle measurements
for drop-on-fiber systems and indicated good wettability.
Single fiber fragmentation tests were conducted on
hierarchical fiber/epoxy model composites, demonstrating
a significant (~45%) improvement of the apparent
interfacial shear strength (IFSS) over the baseline
composites. The result is associated with improved stress
transfer between the carbon fibers and surrounding matrix
through the coated CNT layer.
