Influence of Discharges and UV Irradiation on the Electrical Properties of High Pressure Polyethylene and Compositions on Its Base

ABSTRACT

The composition and concentration of a low-molecular organic additive, leading to a significant improvement in the electrical properties of low-density polyethylene of high pressure grade 10,803-020, were experimentally determined. Phthalic anhydride and phthalic acid were used as modifying organic additives. The content of additives in the polyethylene of high pressure composition varied in the range of 0.01–0.1 wt%. It has been shown that the content of 0.05 wt% phthalic anhydride and phthalic acid in the composition polyethylene of high pressure (PEHP + 0.05 wt% PhAn + 0.05 wt% PhAc) is the optimal composition, since the electrical strength of the film has increased significantly. The dependences of the dielectric loss tangent and specific volumetric electrical resistance on temperature, as well as the kinetics of physicochemical changes in them under the influence of electrical discharges in air and UV irradiation, have been studied. It was established that the dielectric characteristics of the polymer composition PEHP + 0.05 wt% PhAn (storage life 40 years) changed slightly.

Graphical abstract

KEYWORDS:

• Lifetime
• PEHP
• phthalic acid
• phthalic anhydride
• UV irradiation

Disclosure statement

No potential conflict of interest was reported by the author(s)

Additional information

Notes on contributors

M.A. Mehrabova

M.A. Mehrabova is an Dr in physics, Professor, Head of the Engineering Physics and Electronics Department, Azerbaijan Technical University and leading scientist in the “Transformation of Renewable Energy Sources” laboratory, Institute of Radiation Problems Ministry of Science and Education Republic of Azerbaijan. She is an specialist in the field of solid state physics, thin epitaxial films, ab initio calculations, renewable energy sources.

S.I. Mammadova

S.I. Mammadova is an Candidate of Physical and Mathematical Sciences, Associate Professor. Azerbaijan Technical University, Department of engineering physics and electronics. Her study focuses on various forms of polymer composites.

F.Sh. Kerimov

F.Sh. Kerimov is an Candidate of physical and mathematical sciences, Associate Professor. Azerbaijan Technical University, Department of engineering physics and electronics. His research focuses on the engineering properties of polymers, smart polymer composites, polymer thermodynamics, elastomer engineering, and engineering economics.

S.I. Safarova

S.I. Safarova is a Doctor of Philosophy in Physics, Associate Professor. Azerbaijan Technical University, Department of engineering physics and electronics.She is an specialist in the field of solid state physics, polymer composites, nanomaterials, and their applications in different types of polymers.

K.J. Gulmamedov

K.J. Gulmamedov is an Candidate of Physical and Mathematical Sciences, Associate Professor. Azerbaijan Technical University, Department of engineering physics and electronics. His area of expertise includes polymers, polymer composites and their applications in different types of polymers.

I.H. Hamdillayeva

I.H. Hamdillayeva is an Doctor of Philosophy in technique, Associate Professor. Azerbaijan Technical University, Department of special purpose materials and tools. Her study focuses on various forms of polymer composites.