Influence of organic additives on electret state of high pressure polyethylene
Department of physics, Azerbaijan Technical University, Baki, Azerbaijan.
Research Article
Global Journal of Engineering and Technology Advances, 2020, 05(02), 001-004.
Article DOI: 10.30574/gjeta.2020.5.2.0044
Publication history:
Received on 22 July 2020; revised on 28 October 2020; accepted on 03 November 2020
Abstract:
The paper presents the results of a study of the electret properties of high-pressure polyethylene (hppe) modified with organic additives as phthalic-anhydride (pha) and orthophenylenediamine (ophd). Samples obtained and processed by extrusion on an industrial unit brand LRP-700m. Additives were introduced into HPPE by mechanical mixing. For polarization, the samples were placed on a grounded electrode and charged with a negative corona at a voltage of 7 kv. After polarization, the total surface charge of the samples was determined by the compensation method. The thermally stimulated current was recorded in the temperature range 290–520 K, provided that the heating increased linearly at a rate of 3.5 k / min. It is shown that after polarization of hppe composites modified with pha and ophd organic fillers, the depolarization process begins in connection with the resolution and release of trapped charge carriers from traps. After the complete destruction of the homo charges, the density of the surface charge of the hppe films and their optimal modification, reaching a certain value, in the future, depending on the duration of storage, does not change. It was also revealed that the introduction of the organic additive pha and ophd into hppe makes it possible to obtain an antistatic polymer material with improved technological and electrical properties.
Keywords:
HPPE; Phthalic-Anhydride; Orthophenylenediamine; Additive; Thermostimulated depolarization; Electret Properties.
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