Influence of Nanoclay Microadditives on the Molecular Processes and Kinetics of Electrical and Mechanical Destruction of Polyethylene

doi:10.15407/nnn.17.01.155

Cited by 3 publications

(1 citation statement)

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“…According to A.R. Sadigova et al [2] a significant breakthrough is taking place in connection with the new possibilities of nanotechnologies, namely, the possibility of regulating the supramolecular structure of polymer composites at the nano level. Nanofilled systems are increasingly being studied to improve the physical and mechanical characteristics of polymers.…”

Section: Introductionmentioning

confidence: 99%

Influence of the phthalimide on the process of electrical aging of the high-pressure polyethylene

Zeynalov,

Kerimov,

Safarova

et al. 2023

Scientific Herald of Uzhhorod University Series Physics

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Relevance. The use of polyolefins without additional processing methods, namely, the increase in their electrophysical characteristics, is an actual modern requirement. For this, it is necessary to use the mechanism of ionization ageing where the role of the modifying additive must be elucidated by the method of infrared spectroscopy in high-pressure polyethylene. Purpose. The research aims to study the effect of low molecular weight organic additives of phthalimide on molecular structural changes in polymers that occur under external action. Methodology. The impact of electrical discharges on polymer dielectrics was carried out in a test cell of an asymmetric type. Tested polymer film before and after pre-stretching was tightly stretched onto this plate following the research procedure. To create an air gap of constant thickness between the top electrode and the polymer film, 1.5 mm thick glass spacers were placed along the edges. Results. The electrical strength (lifetime) of high-pressure polyethene (LDPE) and its optimal modification before and after electrical ageing was investigated. Following experimental data, at the content of 0.05 wt. % LDPE its electrical strength reaches a maximum value compared to both the original LDPE and LDPE at other additive contents. The introduction of 0.05 wt.% phthalimide into high-pressure polyethene contributes to a noticeable decrease in the intensity of the formation of C=0 groups, which is the measure of the oxidative degradation of polymer chains. Conclusions. The optimal composition of the phthalimide was determined and their electrophysical properties were studied. It was found that composites with additions of 0.05 wt.% phthalimide significantly improve the electrophysical properties of LDPE.

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Section: Introductionmentioning

confidence: 99%