EFFECT OF IONIZING RADIATION ON POLYETHYLENE INSULATION
The effect of ionizing radiations on the properties of polyethylene was studied. Wires consisting of a copper conductor 1 mm in diameter, insulated by a layer of polyethylene 0.5 mm thick, were irradiated with various doses. The properties of the irradiated insulation were studied, particular attention being devoted to the thermal stability of the insulation, which was evaluated on the basis of thermomechanical curves plotted with the use of a special device. It was shown that irradiation permits the service temperature of the insulation to be increased and that deformation at higher temperatures decreases with an increase in the radiation dosage. The optimum irradiation conditions were found to be 100 to 150 Mrad for a gamma source and 2 to 4 min, 1 mv, and 15 mu amp/ cm/sup 2/ for electrons. Wires irradiated under these conditions can serve for several hours at 230 to 250 deg C and for hundreds of hours at 110 deg C. Irradiation increases the reliability of the insulation under normal service conditions. The tensile strength, low-temperature resistance, electrical strength, and dielectric properties of insulation irradiated under optimum conditions were found to be fully adequate. It is expected that the properties of polyethylene insulation can be further improved by using certain stabilizing agents. (OTS)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-16-020518
- OSTI ID:
- 4828974
- Journal Information:
- Trudy Tashkent. Konf. po Mirnomu Ispol'zovan. At. Energ., Akad. Nauk Uzbek, S.S.R., Journal Name: Trudy Tashkent. Konf. po Mirnomu Ispol'zovan. At. Energ., Akad. Nauk Uzbek, S.S.R. Vol. Vol: 1
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
Similar Records
THE DEVELOPMENT OF CRYSTALLINITY AND TRANSPARENCY IN IRRADIATED POLYETHYLENE
Coating materials for electric wire