Radiation effects on electrical treeing resistance and mechanical characteristics of low density polyethylene containing barbituric acid derivatives

Treeing resistance of low density polyethylene containing barbituric acid derivatives under radiation environments were investigated. Barbituric acid, 4-aminouracil and 4-amino-6-hydroxy-2-mercapto pyrimidine were selected for treeing inhibitors, then LDPE with the additives were irradiated by Co-60 gamma - ray. Treeing inception voltage and tree propagation were observed for electrical insulation properties, elongation at break for mechanical property, to clarify relation between molecular structure and electrical tree characteristics, also thermoluminescence and gel contents were carried out as various dosages. LDPE containing treeing inhibitors showed better electrical insulation characteristics than pure LDPE. From the measurements, barbituric acid among the treeing inhibitors was the best treeing and radiation resistance. Treeing resistance of low density polyethylene barbituric acid derivatives under radiation resistance.