Investigation on optimal filler loadings for dielectric strength enhancement of epoxy/TiO<sub>2</sub>@SiO<sub>2</sub> nanocomposite

Awais, Muhammad; Sundararajan, Raji; Sajjad, Intisar Ali; Haroon, Shaikh Saaqib; Amin, Salman; Shaukat, Hammad; Nasir, Muhammad Ali

doi:10.1088/2053-1591/ab0ef2

Cited by 12 publications

(17 citation statements)

References 24 publications

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“…A same trend was observed when encapsulated nano particles were used with other base materials as reported by some other studies e.g. the leakage current values of Zepoxy/TiO 2 @SiO 2 nanocomposites were investigated in [31] showed that the value of leakage current decreased with increasing filler concentration. Enhanced insulation attributes of SiO 2 and high polarizability of TiO 2 resulted in lower values of leakage current at higher filler concentration.…”

Section: Instantaneous Leakage Current Versus Voltagesupporting

confidence: 84%

“…Least value of leakage current was observed at 0.8% filler loading having a value of 0.27 nA. Study of Leakage current characteristics of epoxy/TiO 2 @SiO 2 nanocomposites exhibited lowest values at 0.6% filler loading [32]. Generally, the values of leakage current for circular LDPE nanocomposites have shown an increase in leakage current with increasing voltage threshold.…”

Section: Instantaneous Leakage Current Versus Voltagementioning

confidence: 85%

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Effect of regular and core shell nano fillers on the partial discharge and tracking performance of low density polyethylene

Awan

Amin

Rahman

et al. 2020

Mater. Res. Express

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Solid insulation materials are the backbone for all kinds of outdoor insulation applications. Environmental stresses degrade every outdoor insulation material with the passage of time. Internal partial discharges and external surface tracking are the two major factors governing the health of outdoor insulation. Best outdoor insulation is the one having lowest level of partial discharge and highest resistance to tracking. Improvement in tracking resistance of polymeric insulation materials has been a concern of many researchers. This study investigates the improvement in partial discharge and tracking resistance of LDPE under the effect of three different nano fillers including SiO 2 , TiO 2 , TiO 2 @SiO 2 . A very little has been reported on the effect of these nano fillers on the tracking performance of LDPE. TiO 2 @SiO 2 is a novel core-shell nano filler. No study has reported the effect of these core-shell nano fillers on the partial discharge and tracking performance of LDPE. It has been observed in this study that core-shell nano fillers are much more efficient in improving partial discharge and tracking resistance of solid insulation materials than ordinary nano fillers.

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Section: Instantaneous Leakage Current Versus Voltagesupporting

confidence: 84%

Section: Instantaneous Leakage Current Versus Voltagementioning

confidence: 85%

Effect of regular and core shell nano fillers on the partial discharge and tracking performance of low density polyethylene

Awan

Amin

Rahman

et al. 2020

Mater. Res. Express

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“…As reported by many researchers previously, this study also indicated that every NP has an optimum concentration threshold at which it gives maximum benefit. This percentage is usually below 1 percent by weight in the for many kinds of base material [20][21][22]26].…”

Section: Resultsmentioning

confidence: 99%

“…The reason to this enhancement is the barrier effect, which is basically the formation of electrical double layer between inorganic (TiO 2 @SiO 2 ) and organic (epoxy). Further investigation was done in [21] and showed that at 0.6% of TiO 2 @SiO 2 particles in epoxy gives best results. In another study [22] the optimal filler loading of SiO 2 , TiO 2 and TiO 2 @SiO 2 nano-fillers in zepoxy for achieving minimum values of partial discharge and leakage current was investigated.…”

Section: Introductionmentioning

confidence: 99%

The tracking and erosion performance of silicone rubber incorporated with novel TiO₂@SiO₂ core-shell nano fillers under the IEC 60587 standard

Asad

Amin

Aziz

et al. 2020

Mater. Res. Express

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In last two decades a promising performance improvement in the electrical insulation materials has been reported by many researchers using different nano fillers (NFs). In recent years another type of NFs called core-shell type nano fillers have shown even more attention than ordinary NFs. The coreshell NFs are a combination of nano particle core coated with outer nano layer of different material. The core-shell NFs combine the beneficial properties of two material with in one NF. Recently a few studies have reported a considerable improvement in the dielectric properties of epoxy by utilising TiO 2 @SiO 2 core-shell NFs. The TiO 2 @SiO 2 particles have a core of TiO 2 coated with an out layer of SiO 2 at nano level. This study investigates the improvement in tracking performance of silicone rubber (SiR) using TiO 2 @SiO 2 core-shell nano particles which has not been reported previously. The tracking immunity of low (below 1%) and high (above 1%) filler concentrations of nano TiO 2 @SiO 2 incorporated into SiR was investigated according to IEC 60587. The results showed that an optimum percentage of 0.6 wt% of TiO 2 @SiO 2 imparts best immunity to silicone rubber against tracking.

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“…It was observed that electrical conductivity and permittivity of nano composites increases with the increase in frequency. The dielectric properties of TiO 2 @SiO 2 nano composites were investigated in [23]. LC and volume resistivity of prepared epoxy nano composites decreases with the increase in filler concentration.…”

Section: Efforts Done In Previous Studiesmentioning

confidence: 99%

Effect of nano filler concentration on leakage current and partial discharge properties of zepoxy nano composites

et al. 2019

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Electrical insulation materials play a key role in stable and uninterrupted operation of electrical power system. Researchers working in the field of electrical insulation have turned their focus to nano composite insulation materials for better performance and reliability. A typical nano composite insulation material is a combination of nano particles and base materials. Since last 25 years silicon rubber and epoxy are two widely used electrical insulation materials for outdoor and indoor applications respectively. To further enhance the electrical insulation performance of these materials addition of nano particles has proven to be of practical value. This study presents an investigation on zepoxy (a military grade epoxy) incorporated with three different nano particles at varying percentages. The main aim was to find the nature of relationship between leakage current (LC) and partial discharge (PD). In addition to that optimum composition which results in lowest values of PD and LC was also investigated for each of three nano composites. The results of this study help to understand the interdependence between LC and PD for indoor electrical insulation based on zepoxy. LC and PD play a vital role in condition assessment of any insulation material.

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Investigation on optimal filler loadings for dielectric strength enhancement of epoxy/TiO₂@SiO₂ nanocomposite

Cited by 12 publications

References 24 publications

Effect of regular and core shell nano fillers on the partial discharge and tracking performance of low density polyethylene

Effect of regular and core shell nano fillers on the partial discharge and tracking performance of low density polyethylene

The tracking and erosion performance of silicone rubber incorporated with novel TiO₂@SiO₂ core-shell nano fillers under the IEC 60587 standard

Effect of nano filler concentration on leakage current and partial discharge properties of zepoxy nano composites

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Investigation on optimal filler loadings for dielectric strength enhancement of epoxy/TiO2@SiO2 nanocomposite

Cited by 12 publications

References 24 publications

Effect of regular and core shell nano fillers on the partial discharge and tracking performance of low density polyethylene

Effect of regular and core shell nano fillers on the partial discharge and tracking performance of low density polyethylene

The tracking and erosion performance of silicone rubber incorporated with novel TiO2@SiO2 core-shell nano fillers under the IEC 60587 standard

Effect of nano filler concentration on leakage current and partial discharge properties of zepoxy nano composites

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Investigation on optimal filler loadings for dielectric strength enhancement of epoxy/TiO₂@SiO₂ nanocomposite

The tracking and erosion performance of silicone rubber incorporated with novel TiO₂@SiO₂ core-shell nano fillers under the IEC 60587 standard