Effect of Dose Rate on Degradation Behavior of Insulating Polymer Miaterials
- 1 October 1979
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Electrical Insulation
- Vol. EI-14 (5) , 272-277
- https://doi.org/10.1109/TEI.1979.298231
Abstract
The dose rate effect on the mechanical and electrical properties of representative insulating and jacket materials has been studied. Crosslinked polyethylene (XLPE),thylene ethylene-propylene terpolymer (EPDM), and some chlorine containing polymeric materials are irradiated in air at several dose rates. XLPE degrades significantly at lower dose rates, but EPDM shows opposite dose rate dependency to XLPE. Dose rate effect is interpreted as a competition between the dissolution and diffusion of oxygen into the sample and the oxidation reaction by irradiation. Ingredient compounding in chlorine containing polymeric materials may depress the dose rate effect.Keywords
This publication has 2 references indexed in Scilit:
- Radiation Resistance of Cable Insulating Materials for Nuclear Power Generating StationsIEEE Transactions on Electrical Insulation, 1978
- Insulations and Jackets for Control and Power Cables in Thermal Reactor Nuclear Generating StationsIEEE Transactions on Power Apparatus and Systems, 1969