The Effect of Surface Conductivity on the Accumulation and Dissipation of Static Electricity Charges on the Surface of Polymer Dielectrics

Q3 Engineering Russian Electrical Engineering Pub Date : 2024-06-14 DOI:10.3103/s1068371224700275

S. S. Zhulikov, D. I. Kovalev, A. G. Temnikov, I. V. Korolev

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Abstract

The results of studies of the effect of specific surface conductivity γ_S on the accumulation and dissipation of static electricity (SE) charges on the surface of polymer dielectrics are presented. Samples with a thickness of 1–5 mm with a specific volumetric conductivity of γ_V60 ≤ 10^—12 Ω^–1 m^–1 were selected for research. It has been found that such dielectrics are characterized by the absence of a steady-state mode after voltage application, since the current flowing through the volume of the dielectric is constantly decreasing. The dependence of γ_S on the tangential component of constant electric field strength γ_S = f(E_τ) in the range E_τ = 5 × 10²–5 × 10⁵ V/m is studied. It has been found that, for dielectrics with a basic surface conductivity of γ_S0 < 10^–12 Ω^–1, a nonlinear dependence of γ_S = f(E_τ) is observed, and this nonlinearity increases with a decrease in γ_S0. It has also been found that a more pronounced nonlinearity γ_S = f(E_τ) is characteristic of hydrophobic dielectrics. Mathematical modeling of the accumulation and dissipation of SE charges is performed without and with taking into account the nonlinear dependence of γ_S = f(E_τ). It is concluded that, for dielectrics with γ_V60 ≤ 10^–12 Ω^–1 m^–1, only surface conductivity can be taken into account; moreover, while γ_S = const for hydrophilic dielectrics, for hydrophobic dielectrics it is necessary to take into account the nonlinear dependence γ_S = f(E_τ).

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表面电导率对聚合物电介质表面静电荷积累和消散的影响

摘要本文介绍了比表面电导率 γS 对聚合物电介质表面静电（SE）电荷积累和消散的影响的研究结果。研究选择了厚度为 1-5 毫米、比体积电导率为 γV60 ≤ 10-12 Ω-1 m-1 的样品。研究发现，这种电介质的特点是施加电压后没有稳态模式，因为流过电介质体积的电流在不断减小。在 Eτ = 5 × 102-5 × 105 V/m 的范围内，研究了 γS 与恒定电场强度切向分量 γS = f(Eτ) 的关系。研究发现，对于基本表面电导率为 γS0 < 10-12 Ω-1 的电介质，γS = f(Eτ)具有非线性依赖性，并且这种非线性随着 γS0 的减小而增大。研究还发现，疏水性电介质具有更明显的非线性 γS = f(Eτ)。在不考虑和考虑了 γS = f(Eτ)的非线性依赖性的情况下，对 SE 电荷的积累和耗散进行了数学建模。结论是，对于 γV60 ≤ 10-12 Ω-1 m-1 的电介质，只能考虑表面电导率；此外，亲水性电介质的 γS = const，而疏水性电介质则必须考虑非线性依赖关系 γS = f(Eτ)。

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来源期刊

Russian Electrical Engineering Engineering-Electrical and Electronic Engineering

CiteScore

1.50

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0.00%

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期刊介绍： Russian Electrical Engineering is a journal designed for the electrical engineering industry and publishes the latest research results on the design and utilization of new types of equipment for that industry and on the ways of improving the efficiency of existing equipment.