Journal of Materials, Processes and Environment

Thermal Resistance And Tensile Properties Studies On Resin Used For Coating Submitted To Gamma Radiation By 60co Up 50 Kgy

Auteurs : Boutouchent-guerfi Nabila . Tlemçani Omar . Seddiki Nesrrine .

Résumé

Polyethylene polymer (PE), is one of the major bulk polymers which is a widely consumed in various applications and it is used as cable coating. The interest of this work is to study the change that can be induced by storage conditions and gamma radiation up to 50 KGy. For this reason, PE compound employed in the manufacture of low and medium voltage electrical cable coating were used, it was dated from: 2015 and 2017. The resin was stored in bags under ambient conditions. Dumbbell samples were prepared and submitted to γ-rays up 50 KGy. Physical, mechanical (tensile strength, elongation at break and Young’s modulus), thermal and morphological characterization was performed on the latter to evaluate the effect of storage. Then, the same characterization was carried out on PE/2017 and PE/2015 compound irradiated. The mechanical, thermal and morphological results showed the mediocre properties of PE/2015 compared to PE/2017, these results revealed that the period of storage has an effect on the properties of PE due to the chain scission, unlike the gamma radiation effect. At 50 KGy, the mechanical, thermal and morphological properties of PE/2015 are improved, which gives a new material resistance and regenerates its properties lost during 3 years of storage.

Mots clés

PE ; coating ; ageing ; mechanical properties ; gamma radiation