Influence of absorbed moisture on the dielectric properties of epoxy resins
- Resource Type
- Conference
- Authors
- Dodd, S.J.; Chalashkanov, N.; Dissado, L.A.; Fothergill, J.C.
- Source
- 2010 Annual Report Conference on Electrical Insulation and Dielectic Phenomena Electrical Insulation and Dielectric Phenomena (CEIDP), 2010 Annual Report Conference on. :1-4 Oct, 2010
- Subject
- Bioengineering
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Power, Energy and Industry Applications
Signal Processing and Analysis
Temperature measurement
Dielectrics
Moisture
Epoxy resins
Dielectric measurements
Glass
Permittivity
- Language
- ISSN
- 0084-9162
The dielectric response of two bisphenol-A epoxy resin systems Araldite CY1301 (T g ∼ 50°C) and Araldite CY1311 (T g ∼0°C) was studied at different levels of absorbed moisture. The dielectric measurements were carried out over the frequency range 1 mHz to 100 kHz and the results were characterised in terms of dc bulk electrical conduction and dielectric processes. The characteristic parameters (frequency and magnitude) of all processes have been found to be moisture dependent. In both resins above the glass transition temperature, absorbed moisture was found to be implicated in the formation of a bulk quasi-dc dielectric response consistent with cluster formation of the absorbed water molecules.