Investigations of surface degradation of high‐density polyethylene materials resulting from tracking, using physicochemical analysis

Sarathi, R.

doi:10.1002/app.10260

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…A number of studies were carried out to reveal the physical essence of surface tracking [5][6][7][8][9]. Nowadays, surface tracking is acknowledged as a surface degradation process of organic insulations [5,6]. The liquid contamination acts as a conduction pathway for the leakage current, under an external electric field.…”

Section: Introductionmentioning

confidence: 99%

Surface Tracking of MgO/Epoxy Nanocomposites: Effect of Surface Hydrophobicity

Xing

Zhang

et al. 2019

Applied Sciences

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Surface tracking has been one of the challenges for outdoor organic insulations, in electronic and electrical devices. In this paper, surface tracking behavior of nano-MgO/epoxy composite samples were measured according to the standard IEC 60112. Improved tracking resistance was obtained in nanocomposites with an 18.75% uplift in the comparative tracking index, and a decrease of 58.20% in the surface ablation area at a fixed 425 V. It was observed that the tracking resistance and surface hydrophobicity shared the same tendency—both, the comparative tracking index and surface contact angle increased with an increase of the nanofiller content. Samples with better hydrophobicity exhibited a higher tracking resistance. It could be the case that the conductive pathway of contamination was harder to form, as a result there were fewer discharging processes. With the development of surface tracking, the surface contact angle abruptly decreased, at first, and tended to be constant, which was also accomplished with the failure of samples. In addition, reduced surface resistivity was also found in the nanocomposites, which was beneficial for releasing surface charges and inhibiting distortions in the electric fields.

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Section: Introductionmentioning

confidence: 99%

Surface Tracking of MgO/Epoxy Nanocomposites: Effect of Surface Hydrophobicity

Xing

Zhang

et al. 2019

Applied Sciences

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“…The degradation of polymeric materials in acid rain is an electrochemical process of de-polymerization that is more severe in the presence of voltage [2][3][4][5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…Parameters like the leakage current, contact angle, SEM, TGA, FTIR, WAXD, gas chromatography, mass spectrometry and tan 6 have been used in analyzing results of aging [2][3][4][5][6][7][8][9][10][11][12]. But, the most common method for simulation of acidic aging is soaking of the coated samples in acid [4][5][6][7][8][9][10]. Nitric acid was selected as the main acid for aging process in this study.…”

Section: Introductionmentioning

confidence: 99%

Effect of acid immersion on RTV silicone rubber coatings in inclined plane tests

Jahromi

El-Hag

Jayaram

et al.

CEIDP '05. 2005 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, 2005.

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The paper presents the results of an investigation into the effect of acid immersion on the aging of room temperature vulcanized (RTV) silicone rubber coatings in inclined plane tests (INP). Two commercial coatings, RTV-A filled with ATH (aluminum tri-hydrate) and RTV-B filled with silica, are compared before and after acid immersion. Acid aging consists of immersing the samples in 3.9 pH nitric acid at a temperature of 90°C for 2 weeks. The relative comparison between the two samples is based on the development of the fundamental and third harmonic of the leakage current during IPT tests, eroded area, the time to failure and SEM microphotographs. All of these observations show that acid rain damages RTV-A more severely than RTV-B. However virgin ATH filled sample showed a better performance compared to the silica filled material.

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Morphological study of epoxy resin after electrical tracking

Syakur

Juningtijastuti

2015

2015 2nd International Conference on Information Technology, Computer, and Electrical Engineering (ICITACEE)

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Currently, epoxy resin has been developing as outdoor insulator replace ceramic and glass insulator, because epoxy resin has some dielectric properties better than the ceramic, glass and porcelain material. When epoxy resin was used as outdoor insulator, some factors affecting performance of epoxy resin insulators are like rain, humidity, ultraviolet rays, condensation and contaminant. To improve the surface properties of epoxy resin, then silicon rubber material that has the ability to repel water were added and silica sand was mixed with silicone rubber to improve the mechanical properties. When contaminant flows at the insulator surface, they can cause damage to the surface of the insulator and it was formed tracking on insulator surface and finally cause flashover. This paper presents the morphological studies of epoxy resin sample test after electrical tracking. The tests were conducted at high voltage laboratory with 3.5 kV AC high voltage and 50 Hz. NH4C1 contaminant was flowed on test sample surface during 6minutes. After electrical aging was done then samples were taken using SEM devices to be analyzed of morphological condition.The research results showed that epoxy resin material with filled mixtures of silicon rubber and silica 30% (RTV23) did not experience significant damage after electrical tracking by the Inclined Plane Tracking test method.

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Investigations of surface degradation of high‐density polyethylene materials resulting from tracking, using physicochemical analysis

Cited by 5 publications

References 7 publications

Surface Tracking of MgO/Epoxy Nanocomposites: Effect of Surface Hydrophobicity

Surface Tracking of MgO/Epoxy Nanocomposites: Effect of Surface Hydrophobicity

Effect of acid immersion on RTV silicone rubber coatings in inclined plane tests

Morphological study of epoxy resin after electrical tracking

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