Increasing The Interfacial Strength In Carbon
Fiber/polypropylene Composites By Growing
CNTs On The Fibers
Author(s)
S. Yumitori, Y. Arao, T. Tanaka, K. Naito, K. Tanaka
& T. Katayama
Abstract
Carbon nanotubes (CNTs) were grown uniformity on the surface of carbon fibers
to create hierarchical fibers by use of floating catalyst chemical vapor deposition.
The tensile properties of CNTs grafted fibers were measured. The strength of
grafted fibers decreased approximately 12% compared to raw carbon fibers in
this process. A fiber pull-out test revealed that the interfacial shear strength
(IFSS) in polypropylene composites improved by 35% by grafting CNTs onto
carbon fibers. It indicates the use of hierarchical fibers in thermoplastic
composites is effective due to the improvement of IFSS by mechanical
interlocking between CNTs and the matrix. The CNT/fiber joint strength is the
most critical property, and the experimental observations also revealed that the
joint fracture was the major failure mode.
Key words: hierarchical reinforcement, carbon nanotube, carbon fibers,
interface, thermoplastics.
Keywords
Key words: hierarchical reinforcement, carbon nanotube, carbon fibers,
interface, thermoplastics.
Related Book
Other papers in this volume
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