Abstract
| Language | English |
|---|---|
| Pages | 2218-2229 |
| Number of pages | 11 |
| Journal | Polymer |
| Volume | 46 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2005 |
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Keywords
- epoxy resin
- water ingress
- dielectric relaxation spectroscopy
- polymer science
- chemistry
- mechanical engineering
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Changes in the dielectric relaxations of water in epoxy resin as a function of the extent of water ingress in carbon fibre composites. / Boinard, P.; Banks, W.M.; Pethrick, R.A.
In: Polymer, Vol. 46, No. 7, 2005, p. 2218-2229.Research output: Contribution to journal › Article
TY - JOUR
T1 - Changes in the dielectric relaxations of water in epoxy resin as a function of the extent of water ingress in carbon fibre composites
AU - Boinard, P.
AU - Banks, W.M.
AU - Pethrick, R.A.
PY - 2005
Y1 - 2005
N2 - Dielectric relaxation measurements are reported over a frequency range from 10-1 to 109 Hz as a function of exposure time for an epoxy resin-carbon fibre composite, ageing at 60C in water. Investigation of the nature of the dipole relaxation of the water molecules, indicates the nature of their interaction with the polymer matrix. Analysis of the dielectric relaxation spectra allow identification of processes that can be attributed to 'free' and 'bonded' water, water in micro-cracking, located in carbon fibre disbonds and plasticizing the polymer matrix. Identification of the various types of location in which water exists was aided by use of the Ng factor from the Kirkwood-Frölich equation, which describes the constraints on free dipole ration nature imposed by the environment in which it is located. These data indicate the power of the dielectric technique for quantitative analysis of water ingress into epoxy composites.
AB - Dielectric relaxation measurements are reported over a frequency range from 10-1 to 109 Hz as a function of exposure time for an epoxy resin-carbon fibre composite, ageing at 60C in water. Investigation of the nature of the dipole relaxation of the water molecules, indicates the nature of their interaction with the polymer matrix. Analysis of the dielectric relaxation spectra allow identification of processes that can be attributed to 'free' and 'bonded' water, water in micro-cracking, located in carbon fibre disbonds and plasticizing the polymer matrix. Identification of the various types of location in which water exists was aided by use of the Ng factor from the Kirkwood-Frölich equation, which describes the constraints on free dipole ration nature imposed by the environment in which it is located. These data indicate the power of the dielectric technique for quantitative analysis of water ingress into epoxy composites.
KW - epoxy resin
KW - water ingress
KW - dielectric relaxation spectroscopy
KW - polymer science
KW - chemistry
KW - mechanical engineering
UR - http://dx.doi.org/10.1016/j.polymer.2004.11.103
U2 - 10.1016/j.polymer.2004.11.103
DO - 10.1016/j.polymer.2004.11.103
M3 - Article
VL - 46
SP - 2218
EP - 2229
JO - Polymer
T2 - Polymer
JF - Polymer
SN - 0032-3861
IS - 7
ER -