Inverse effect in simultaneous thermal and radiation aging of EVA insulation | Zendy

G. Przybytniak | Zendy; Jacek Boguski | Zendy; V. Plaček | Zendy; L. Verardi | Zendy; Davide Fabiani | Zendy; Erik Linde | Zendy; Ulf W. Gedde | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Inverse effect in simultaneous thermal and radiation aging of EVA insulation

Author(s) -

G. Przybytniak,

Jacek Boguski,

V. Plaček,

L. Verardi,

Davide Fabiani,

Erik Linde,

Ulf W. Gedde

Publication year - 2015

Publication title -

express polymer letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.695

H-Index - 72

ISSN - 1788-618X

DOI - 10.3144/expresspolymlett.2015.36

Subject(s) - materials science , inverse , composite material , radiation , thermal , polymer science , thermodynamics , mathematics , optics , physics , geometry

Poly(ethylene-co-vinyl acetate) (EVA) insulation of the cable applied in nuclear power plants was accelerated aged by gamma-rays at two various temperatures, namely 55 and 85°C. Radiation degradation in the dose range of 0–1500 kGy was monitored using a Differential Scanning Calorimetry method by measuring oxidative induction temperature (OITp), gel fraction, mechanical and electrical tests. It was confirmed that a dose rate effect in the range of 420–1500 Gy/h was negligible whereas progress of degradation with increasing dose was strongly temperature dependent. For the insulation accelerated aged at 85°C the OITp and permittivity measurements confirmed lower degradation than for the specimens radiation treated at 55°C at the same dose rates. It was postulated that an inverse thermal effect resulted from radiation induced cross-linking facilitated by melting of EVA crystallites at 85°C

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research