Measurements of dielectric properties of High Density Polyethylene-Nano-Composites

Gouda, Osama E.; Haiba, Ahmed S.

doi:10.1016/j.measurement.2018.10.029

Cited by 3 publications

(6 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…There are some differences between the results obtained by different authors for nominally identical nanocomposites. Thus, for HDPE/nanoclay, at 10 wt % nanoparticle fraction, an increase of approximately 130% was reported in [ 58 ], but only about 10% in [ 57 ]. On the other hand, for LDPE/Al 2 O 3 , very small increases were reported in [ 56 , 59 ] for small nanoparticle fractions.…”

Section: Dielectric Properties Of Polymer Nanocompositesmentioning

confidence: 99%

“…Many experimental studies of the breakdown strength of nanocomposites have been reported [ 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 ]. In most cases, the measurements were carried out under a uniform electric field or semi-uniform electric field using sphere-to-sphere electrode or sphere-to-plane electrode, respectively, as shown in Figure 3 .…”

Section: Dielectric Properties Of Polymer Nanocompositesmentioning

confidence: 99%

See 1 more Smart Citation

Recent Advances in Polymer Nanocomposites Based on Polyethylene and Polyvinylchloride for Power Cables

et al. 2020

View full text Add to dashboard Cite

Polymer nanocomposites used in underground cables have been of great interest to researchers over the past 10 years. Their preparation and the dispersion of the nanoparticles through the polymer host matrix are the key factors leading to their enhanced dielectric properties. Their important dielectric properties are breakdown strength, permittivity, conductivity, dielectric loss, space charge accumulation, tracking, and erosion, and partial discharge. An overview of recent advances in polymer nanocomposites based on LDPE, HDPE, XLPE, and PVC is presented, focusing on their preparation and electrical properties.

show abstract

Section: Dielectric Properties Of Polymer Nanocompositesmentioning

confidence: 99%

Section: Dielectric Properties Of Polymer Nanocompositesmentioning

confidence: 99%

Recent Advances in Polymer Nanocomposites Based on Polyethylene and Polyvinylchloride for Power Cables

et al. 2020

View full text Add to dashboard Cite

show abstract

“…[ 41 ] The clay's exfoliated and intercalated structure acts as a barrier, hence it increasing the path for the breakdown. [ 42 ] Table 1 shows the overview of HDPE.…”

Section: Classification Of Polymeric Insulation Cablesmentioning

confidence: 99%

“…The loss factor decreases up to 6 wt% and then begins to increase above 10 wt% as filler concentration increases. [42] 2.1.7 | HDPE nanocomposite under DC stress Shah et al, reported that the addition of montmorillonite clay to HDPE improves both its electrical and mechanical F I G U R E 3 HDPE nanocomposite (A) resistivity and (B) breakdown strength. [41] properties under DC stress.…”

Section: Hdpe Nanocomposite Under Ac Stressmentioning

confidence: 99%

A review on polymeric insulation for high‐voltage application under various stress conditions

Angalane

Kasinathan

2022

Polymer Composites

View full text Add to dashboard Cite

Polymeric material draws a great attraction in the development of insulation for High Votage Direct Current (HVDC) applications. Insulation material is the deciding key factor to increase the operating voltage and to transmit the bulk power with minimized power loss. Premature breakdown, high withstanding temperature, and impacts of space charge accumulation are all issues faced by the insulation material. Material qualities such as dielectric, electrical, structural, and mechanical properties are directly affected by the issues. Therefore, this paper provides an overview of the dielectric properties of polymeric materials and their composites under various stress conditions. The stress includes AC, DC, superimpose and combined (AC and DC) stress under which the dielectric constant, dielectric losses, electrical strength, and space charge distribution of polymeric insulating materials such as low‐density polyethylene, high‐density polyethylene, cross‐linked polyethylene, polypropylene, and random copolymer (RCP), as well as their composites, are explored. Polypropylene and RCP outperform all other polymers in terms of breakdown strength and space charge suppression under various stress conditions. RCP is a developing material that also has the potential to be an effective thermoplastic insulation material in the future.

show abstract

“…Bu polarlanma mekanizması ZnO partiküllerinin eklenmesi ile üretilmiş külçe boyutlarındaki polietilen nanokompozitlerin dielektrik özelliklerinin incelendiği [1], plazma polietilen oksitin dielektrik özelliklerinin incelendiği [35], polietilen/kitosan kompozit filmlerin dielektrik özelliklerinin incelendiği [38] ve polimer nanokompozitlerin dielektrik özelliklerinin incelendiği [39] çalışmalarda tanımlandığı üzere uzay-yük polarizasyonu ya da plazma poliakrilik asit filmlerin yapısal özelliklerinin incelendiği [40], plazma polietilen oksit ince filmlerin AC iletkenliğinin incelendiği [41] ve yaygın frekans dielektrik spektroskopinin tanıtıldığı [42] çalışmalarda belirtildiği üzere elektrot polarizasyonu olabilir. Şekil 1'de net olarak gözlenebilen mekanizmasının dielektrik sabitinin artan frekans ile azalması ve artan sıcaklık ile artması ZnO partiküllerinin eklenmesi ile üretilmiş külçe boyutlarındaki polietilen nanokompozitlerin dielektrik özelliklerinin incelendiği [1], volkanik bazalt mineralleri ile güçlendirilmiş düşük yoğunluklu polietilen kompozit filmlerin mekanik ve dielektrik özelliklerine gama ışımasının etkilerinin incelendiği [4], plazma polietilen oksitin dielektrik özelliklerinin incelendiği [35], polietilen/kitosan kompozit filmlerin dielektrik özelliklerinin incelendiği [38], yüksek yoğunluklu polietilen nanokompozitlerin dielektrik özelliklerinin incelendiği [43] çalışmalardan bilindiği üzere literatürle uyumludur. Gözlenebilen cevabın elektrik alanın değişen yönüne uyum sağlamaya çalışan polimer ana zincirinden ve zincirin yan kollarından kaynaklanmaktadır.…”

Section: Dielektrik Sabitin Frekansa Ve Sıcaklığa Bağlılığı (Frequency and Temperature Dependence Of Dielectric Constant)unclassified

Polietilen ince filmin dielektrik özelliklerinin frekans, sıcaklığa bağlı davranışı ve camsı geçiş sıcaklığının tespiti

Yakut

2021

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

View full text Add to dashboard Cite

 Determination of glass transition temperature by VFT model  Higher dielectric constant of PE thin film compared to dielectric constant of bulk PE  Determining glass transition temperature of PE thin film at higher temperatures than glass transition temperature of bulk PE Figure A. The dependence of the frequency value at which the maximum dielectric loss is observed from the dielectric loss obtained from the dielectric loss graph for 35000 g/mol and 750 nm thick polyethylene (PE) thin film (red dots and VFT fit curve) and the temperature dependence of the frequency values at which the maximum electric modulus is observed from the electric modulus graph (blue dots and activation curve) Purpose:The aim of this article is to analyze dielectric properties and glass transition temperature of PE thin film in comparison to bulk PE in order to evaluate the possible application opportunities of PE thin film in enery storage systems. Theory and Methods: PE thin film samples were deposited by thermal evaporation method between Al thin film electrodes under 10-5 Torr vacuum conditions. The dielectric spectroscopy measurements were operated by high frequency empedance analyzer. Results: The results show that thermal evaporation process causes breakage of PE main chain and occurance of oligomers and radicals. These oligomers and radicals may be the reason of increasing dielectric constant as a result of space-charge polarization. Also, the oligomers and radicals may react with each other and the main chain and cause the construction of cross-linked network. The presence of this network is the reason of increasing glass transition temperature. Conclusion: The results obtained for the change of dielectric constant and glass transition temperature show that PE thin films can be thought as candidate for organic energy storage systems.

show abstract

Measurements of dielectric properties of High Density Polyethylene-Nano-Composites

Cited by 3 publications

References 23 publications

Recent Advances in Polymer Nanocomposites Based on Polyethylene and Polyvinylchloride for Power Cables

Recent Advances in Polymer Nanocomposites Based on Polyethylene and Polyvinylchloride for Power Cables

A review on polymeric insulation for high‐voltage application under various stress conditions

Polietilen ince filmin dielektrik özelliklerinin frekans, sıcaklığa bağlı davranışı ve camsı geçiş sıcaklığının tespiti

Contact Info

Product

Resources

About