Influence of organic additives on electret state of high pressure polyethylene

Eldar Mekhraly Gojayev Eldar Mekhraly Gojayev,Farhad Shamil Karimov Farhad Shamil Karimov,Sevinc Sarkar Osmanova Sevinc Sarkar Osmanova,Shujayat Aman Zeynalov Shujayat Aman Zeynalov

doi:10.30574/gjeta.2020.5.2.0044

Eldar Mekhraly Gojayev Eldar Mekhraly Gojayev, Farhad Shamil Karimov Farhad Shamil Karimov + Show 2 more

Open Access

https://doi.org/10.30574/gjeta.2020.5.2.0044

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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.

Highlights

Interest in a new type of composite materials has grown significantly, in which the inclusion of a low molecular weight additive and nanoparticles in a polymer matrix leads to unusual electrophysical, electret, mechanical, and thermophysical properties
It is known that one of the main directions of the development of new electret materials based on composite materials is to give polyethylene high electret characteristics, which can be achieved by filling it with various fillers
In light of the foregoing, in this paper we studied the effect of organic additives pha and ophd on the accumulation ability and stability of electric charges in hppe grade 10803-020 and their relationship with the electrical durability of the final polymer material

Summary

Introduction

Interest in a new type of composite materials has grown significantly, in which the inclusion of a low molecular weight additive and nanoparticles in a polymer matrix leads to unusual electrophysical, electret, mechanical, and thermophysical properties. The electret properties of polymer composite materials are widely used in electro-acoustic devices, in air-cleaning devices, in xerography, etc. The main characteristics of the electret material is the magnitude of the electric charge and its stability [6]. In light of the foregoing, in this paper we studied the effect of organic additives pha and ophd on the accumulation ability and stability of electric charges in hppe grade 10803-020 and their relationship with the electrical durability of the final polymer material

Material and methods

Results and discussion

Conclusion