scholarly journals Procedure for Preparing Flat Samples from Liquid Insulating Tape "Nano 4 Premium" and Studying Its Electrical Insulation Properties

2021 ◽  
Vol 19 (2) ◽  
pp. 30
Author(s):  
I V Shtennikov ◽  
V I Chereshev ◽  
I S Mezentsev
Keyword(s):  
Electrical Insulation ◽  
Electrical Insulation Properties

Работа посвящена разработке методики приготовления плоских образцов из вновь разрабатываемого электроизоляционного материала - жидкой изоленты «Nano 4 Premium», исследованию ее электроизоляционных свойств и возможности применения в качестве твердеющего, полимеризующегося диэлектрика для герметизации, защиты и повышения электрической прочности микроэлектронных и электротехнических изделий. При исследованиях различных сопутствующих материалов для приготовления плоских образцов из жидкой изоленты «Nano 4 Premium» наилучшие результаты достигнуты при использовании защитной пленки клеящего слоя декоративной пленки «DEKORON». С ее применением разработана методика приготовления образцов, позволившая получить плоские, листовые образцы из жидкой изоленты «Nano 4 Premium» для исследования электроизоляционных свойств разрабатываемого изоляционного материала. Сформирован комплект приборов и оборудования для определения относительной диэлектрической проницаемости, тангенса угла диэлектрических потерь, удельных объемного и поверхностного электрического сопротивления, а также электрической прочности листовых диэлектриков согласно ГОСТ 22372-77, ГОСТ Р 50499-93, ГОСТ 6433.2-71 и ГОСТ 6433.3-71. Сформулированы условия проведения испытаний приготовленных листовых образцов жидкой изоленты «Nano 4 Premium». Приведены результаты исследования электроизоляционных свойств жидкой изоленты «Nano 4 Premium» после затвердевания. При измерениях в диапазоне частот 102-106 Гц диэлектрическая проницаемость составила 1,34-1,86, тангенс угла диэлектрических потерь 0,002-0,005. Удельное объемное и поверхностное электрическое сопротивление достигает значений не менее 2,5∙1014 Ом∙м и 8∙1015 Ом соответственно, а электрической прочности 36,5-53,0 кВ/мм. По оценке свойств жидкая изолента «Nano 4 Premium» не уступает многим основным электроизоляционным материалам и может использоваться в качестве пропиточного или заливочного изоляционного материала в производстве микроэлектронных и электротехнических изделий.

Electrical insulation properties of silicone rubber under accelerated corona and thermal aging

2020 ◽  
Author(s):  
El Hadi Belhiteche ◽  
Sébastien Rondot ◽  
Mustapha Moudoud ◽  
Philippe Dony ◽  
Omar Jbara
Keyword(s):  
Silicone Rubber ◽  
Thermal Aging ◽  
Electrical Insulation ◽  
Electrical Insulation Properties

scholarly journals Enhanced Insulation Performances of Crosslinked Polyethylene Modified by Chemically Grafting Chloroacetic Acid Allyl Ester

Polymers ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 592 ◽  
Author(s):  
Xin-Dong Zhao ◽  
Wei-Feng Sun ◽  
Hong Zhao
Keyword(s):  
Space Charge ◽  
Dielectric Breakdown ◽  
Breakdown Strength ◽  
Chloroacetic Acid ◽  
Dielectric Materials ◽  
Electrical Insulation ◽  
Polar Group ◽  
Charge Accumulation ◽  
Allyl Ester ◽  
Electrical Insulation Properties

Modified crosslinked polyethylene (XLPE) with appreciably enhanced DC electrical insulation properties has been developed by chemical modification of grafting chloroacetic acid allyl ester (CAAE), exploring the trapping mechanism of charge transport inhibition. The bound state traps deriving from grafted molecule are analyzed by first-principles calculations, in combination with the electrical DC conductivity and dielectric breakdown strength experiments to study the underlying mechanism of improving the electrical insulation properties. In contrast to pure XLPE, the XLPE-graft-CAAE represents significantly suppressed space charge accumulation, increased breakdown strength, and reduced conductivity. The substantial deep traps are generated in XLPE-graft-CAAE molecules by polar group of grafted CAAE and accordingly decrease charge mobility and raise charge injection barrier, consequently suppressing space charge accumulation and charge carrier transport. The well agreement of experiments and quantum mechanics calculations suggests a prospective material modification strategy for achieving high-voltage polymer dielectric materials without nanotechnology difficulties as for nanodielectrics.

Electrical Insulation Properties of Carbon-Controlled Semi-Insulating GaAs

1993 ◽  
Vol 32 (Part 1, No. 8) ◽  
pp. 3342-3345
Author(s):  
Yoohei Otoki ◽  
Masatoshi Watanabe ◽  
Susumu Takahashi ◽  
Shoji Kuma ◽  
Seiichi Okubo
Keyword(s):  
Electrical Insulation ◽  
Electrical Insulation Properties

PREPARATION OF LOW TEMPERATURE RESISTANT AND HIGH ELECTRICAL INSULATION CHLOROPRENE RUBBER–BUTADIENE RUBBER BLENDS

2014 ◽  
Vol 87 (2) ◽  
pp. 360-369 ◽  
Author(s):  
Junping Zheng ◽  
Jin Tan ◽  
Hong Gao ◽  
Chuanzeng Wang ◽  
Zhilei Dong
Keyword(s):  
Mechanical Properties ◽  
Low Temperature ◽  
Mechanical Analysis ◽  
Electrical Insulation ◽  
Butadiene Rubber ◽  
Temperature Resistance ◽  
Rubber Blends ◽  
Chloroprene Rubber ◽  
Low Temperature Resistance ◽  
Electrical Insulation Properties

ABSTRACT To satisfy some special demands of many applications in the fields of aerospace and the electronic industry, low temperature resistant and high electrical insulation chloroprene rubber (CR) was prepared by blending pristine CR with different weight ratios of butadiene rubber (BR). The low temperature resistance, electrical insulation properties, and mechanical properties of CR/BR blends were investigated. With increasing BR content, the low temperature resistance and electrical insulation properties were improved, whereas the tensile strength and elongation at break decreased. For the CR/BR (65/35) blend, filled with SiO2, the brittleness temperature (Tb) was reduced to −61 °C and the high electrical insulation properties were obtained without sacrificing mechanical properties too much. The tan δ plots of CR/BR blends, investigated by dynamic mechanical analysis, also revealed that BR could reduce glass transition temperature (Tg) and improve low temperature resistance of CR. The phase contrast microscope images of CR/BR blends demonstrated that the phase structure of the blends changed with increasing BR content. Furthermore, the fracture surfaces of CR/BR blends, observed by scanning electron microscopy, showed that the compatibility of CR/BR blends was poor although the CR/BR blends were homogeneous in macrostructure.

Study on Preparation, Thermal Conductivity, and Electrical Insulation Properties of Epoxy/AlN

2019 ◽  
Vol 29 (2) ◽  
pp. 1-6 ◽  
Author(s):  
Shaotao Dai ◽  
Teng Zhang ◽  
Siming Mo ◽  
Yuan Cai ◽  
Wen Yuan ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Electrical Insulation ◽  
Electrical Insulation Properties

scholarly journals Polarization and Depolarization Current Measurement of Polymer Added with Nano-particles of Silicon Oxide For HV Insulation

2013 ◽  
Vol 64 (4) ◽  
Author(s):  
N. A. M. Jamail ◽  
M. A. M. Piah ◽  
N. A. Muhamad ◽  
R. A. Zainir ◽  
N. F. Kasri ◽  
...  
Keyword(s):  
Polymer Nanocomposites ◽  
Silicon Oxide ◽  
Short Circuit ◽  
Diagnostic Technique ◽  
Electrical Insulation ◽  
Nano Particles ◽  
Depolarization Current ◽  
Testing Method ◽  
Significant Attention ◽  
Electrical Insulation Properties

Polymer nanocomposites materials have recently emerged as a dielectric and for electrical insulation.  Polyethylene has long been used as extruded cable and HV insulation. Currently, this material has received significant attention because of its ability to enhance electrical insulation properties by addition of nano-filler. Polarization and Depolarization Current (PDC) measurement is an efficient and effective diagnostic technique based on time domain measurement for evaluating and condition monitoring of polymer nanocomopsite for HV insulation. Electrical conduction for polymer nanocomposites has been used widely as a tool to monitor the dielectric behaviour. This paper focuses on application of Polarization and Depolarization Current (PDC) testing method to evaluate and determine the performance of LLDPE nanocomposite for high voltage insulating material. The experiment was conducted to find PDC pattern of the material when added with nano-filler (silicon oxide) as well as to find its conductivity values at different percentage of nano- filler. PDC values and DC conductivity exhibits significant reduction with addition of nano-filler at different %wt of concentration. This was due to the decrease of initiation probability of short circuit treeing in the insulation. The PDC result shows that addition with certain percentage of nano-filler into the LLDPE based material could improve HV insulation properties of the material.

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