Effect Of Water Absorption On The Mechanical
Properties Of Continuous Carbon Fibre
Reinforced Polycarbonate Composites
Author(s)
K. Tanaka, Y. Fukushima, K. Kashihara & T. Katayama
Abstract
Carbon fibre reinforced thermoplastics (CFRTP) attract attention due to their
excellent features of specific strength, specific modulus, productivity and
recyclability in various fields. In this research, polycarbonate (PC) was used as a
matrix of CFRTP with high impact strength compared with other plastics.
However, at high temperature and high humidity conditions, hydrolyzation of an
ester linkage in PC occurs, at the same time crazes and cracks also occur and the
mechanical properties of PC deteriorate. Water absorption testing and tensile
testing were also carried out to investigate the influence of water absorption on
the mechanical properties on the CF/PC composite and PC resin. Single fibre
pull-out tests were carried out to investigate the influence of water absorption on
CF/PC interfacial shear strength. The water gain of PC was saturated at 0.46%.
For the CF/PC composite, water was absorbed not only in the PC resin but also
in the fibre/matrix interface. The tensile strength of the PC resin showed a
tendency to decrease as the water absorption time increases, while the tensile
modulus of PC did not change. The CF/PC composite showed a tendency to
decrease for tensile strength and modulus when water absorption time is at 400
hours. The CF/PC interfacial shear strength showed a tendency to decrease as the
water absorption time increases.
Keywords: carbon fibre, polycarbonate (PC), carbon fibre reinforced
thermoplastics (CFRTP), water absorption, mechanical property.
Keywords
carbon fibre, polycarbonate (PC), carbon fibre reinforced
thermoplastics (CFRTP), water absorption, mechanical property
Related Book
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