Еlectret properties of γ-irradiated composites of ultrahigh molecular weight polyethylene/α-SiO₂

• Дата: 2018
• Автори: Magerramov, A.M., Ismayilova, R.S., Kuliev, M.M., Nabiev, A.A., Gadzhieva, E.G., Ismayilov, J.I., Abdullaev, R.S., Akhundova, G.A.
• Формат: Стаття
• Мова: English
• Опубліковано: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2018
• Назва видання: Вопросы атомной науки и техники
• Теми: Физика радиационных повреждений и явлений в твердых телах
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/147700
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Еlectret properties of γ-irradiated composites of ultrahigh molecular weight polyethylene/α-SiO₂ / A.M. Magerramov, R.S. Ismayilova, M.M. Kuliev, A.A. Nabiev, E.G. Gadzhieva, J.I. Ismayilov, R.S. Abdullaev, G.A. Akhundova // Вопросы атомной науки и техники. — 2018. — № 5. — С. 50-54. — Бібліогр.: 20 назв. — англ.

The influence of silicon dioxide (α-SiO₂) and the absorbed dose of γ-irradiation on the electret properties of UHMWPE+α-SiO₂ composites were studied. It is established that the dependence of the stabilized charge on the volume content of the α-SiO₂ filler has an extreme character: at 1% α-SiO₂, the charge reaches a maximum and then decreases. TSD spectra show that the thermalstability of electrets of the UHMWPE+1 vol.% α-SiO₂ composite is improved. The nature of the TSD current of the films which preliminarily γ-irradiated up to 50…100 kGy doses proves that after γ-irradiation the charges injected from corona discharge zone are mainly accumulated in the subsurface layers. However, the deterioration of the electret properties of composites irradiated at high doses of γ-irradiation is related both to an increase in electrical conductivity so, and an increase in the rate of charge relaxation.