Electrical tracking, erosion and flammability resistance of high voltage outdoor composite insulation: Research, innovation and future outlook

Nazir, M. Tariq; Khalid, Arslan; Akram, Shakeel; Mishra, Palash; Kabir, Imrana I.; Yeoh, Guan H.; Phung, B. Toan; Wong, Khoi Loon

doi:10.1016/j.mser.2023.100757

Cited by 13 publications

(4 citation statements)

References 180 publications

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“…Rubber is an elastomer material that can sustain large reversible deformations and can be used in different products, such as tires, gloves, shoe soles, seals, insulators, and dampers [ 1 , 2 , 3 , 4 ]. The different types of rubber include natural rubber (NR), styrene–butadiene rubber (SBR), nitrile rubber (NBR), butyl rubber (BR), isobutylene isoprene rubber (IIR), ethylene-propylene-diene monomer (EPDM) rubber, and polydimethylsiloxane (PDMS)/silicone rubber (SR) [ 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

“…This in turn can facilitate the preparation of high-performance multifunctional rubber composites [7,[18][19][20]. As a prospective filler in rubber materials, graphene and its derivatives possess several advantages: (1) The two-dimensional (2D) atomically thick carbon structure of graphene can result in an extraordinary modulus that is highly flexible and lightweight. Graphene can achieve a better mechanical reinforcement effect, even in small quantities, compared to other conventional fillers.…”

Section: Introductionmentioning

confidence: 99%

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Graphene-Based Hybrid Fillers for Rubber Composites

Wang,

Li,

Yang

et al. 2024

Molecules

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Graphene and its derivatives have been confirmed to be among the best fillers for rubber due to their excellent properties, such as high mechanical strength, improved interface interaction, and strain-induced crystallization capabilities. Graphene rubber materials can be widely used in tires, shoes, high-barrier conductive seals, electromagnetic shielding seals, shock absorbers, etc. In order to reduce the graphene loading and endow more desirable functions to rubber materials, graphene-based hybrid fillers are extensively employed, which can effectively enhance the performance of rubber composites. This review briefly summarizes the recent research on rubber composites with graphene-based hybrid fillers consisting of carbon black, silica, carbon nanotubes, metal oxide, and one-dimensional nanowires. The preparation methods, performance improvements, and applications of different graphene-based hybrid fillers/rubber composites have been investigated. This study also focuses on methods that can ensure the effectiveness of graphene hybrid fillers in reinforcing rubber composites. Furthermore, the enhanced mechanism of graphene- and graphene derivative-based hybrid fillers in rubber composites is investigated to provide a foundation for future studies.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Graphene-Based Hybrid Fillers for Rubber Composites

Wang,

Li,

Yang

et al. 2024

Molecules

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“…Today, polymer dielectrics play an important role in various electrical and radio engineering devices. Such materials are the basis for film capacitors [1,2,3], pulsed power systems [4,5], high-voltage electrical insulation [6,7,8], etc. The temperature state of solid body, in addition to conditions of its heat exchange with the environment, can also be significantly affected by the processes of energy release in the volume of the body.…”

Section: Introductionmentioning

confidence: 99%

Temperature state of polymer dielectric layer, bounded by curvilinear surfaces, at constant voltage

Zarubin,

Kuvyrkin,

Savelyeva

2024

Preprint

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The solution of one-dimensional nonlinear problem of stationary heat conduction in a dielectric layer with volumetric energy release at a constant difference in electric potentials on the curvilinear heat transfer surfaces, bounding the layer, is presented in a closed analytical form. The analytical form of the solution, being a set of integral relations, allows to conduct a quantitative analysis of the influence of governing parameters on temperature state of the layer, including the one preceding the occurrence of thermal dielectric breakdown. Such form of solution can be used to test the results of numerical solution of this problem. An example of quantitative analysis of the presented integral relations is given. Approximate formulas that make it possible to find estimates of the parameters of temperature state of dielectric layer and the maximum difference in electrical potentials, preceding the thermal breakdown of the layer, are obtained. Mathematics Subject Classification (2010). Primary 80A19; Secondary 97M50.

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“…The homogenized electric field and heat evacuation of PI-based composite films can be made possible by doping a large number of nanoparticles, thus improving the corona resistance of polyimide; however, due to the large specific surface area of nanoparticles, the addition of a large number of nanoparticles is very likely to cause the uneven distribution of nanoparticles, agglomeration, and other problems, resulting in film defects [ 18 ]. Feng Lang [ 19 ] prepared several PI/Al 2 O 3 nanocomposite films that were changed using in situ polymerization and ODPA-ODA-SDA.…”

Section: Introductionmentioning

confidence: 99%

Study of the Dielectric and Corona Resistance Properties of PI Films Modified with Fluorene Moiety/Aluminum Sec-Butoxide

Zhang,

Liu,

Tang

et al. 2024

Polymers

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With the policy tilt and increased investment in research and development in the world, new energy vehicle technology continues to progress and the drive motor power density continues to improve, which puts forward higher requirements for the comprehensive performance of the core insulating material enameled wire enamel for drive motors. Polyimide (PI) has excellent electrical insulation properties, and heat resistance is often used to drive the motor winding insulation. To further improve the corona resistance and insulating properties of PI wire enamel varnish, in this paper, firstly, fluorene groups with a rigid conjugated structure were introduced into the molecular chain of the PI film by molecular structure modulation, and then uniformly dispersed alumina nanoclusters (AOCs) were introduced into the PI matrix by using an in situ growth process to inhibit the migration of high-energy electrons. The quantum size effect of the alumina nanoclusters was exploited to synergistically enhance the suppression and scattering of energetic moving electrons by PI-based composite films. The results show that the breakdown field strength of the PI-based composite film (MPI/1.0 vol% AOC) reaches 672.2 kV/mm, and the corona resistance life reaches 7.9 min, which are, respectively, 1.55 and 2.19 times higher than those of the initial PI film. A PI-based composite film with excellent insulating and corona resistance properties was obtained.

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Electrical tracking, erosion and flammability resistance of high voltage outdoor composite insulation: Research, innovation and future outlook

Cited by 13 publications

References 180 publications

Graphene-Based Hybrid Fillers for Rubber Composites

Graphene-Based Hybrid Fillers for Rubber Composites

Temperature state of polymer dielectric layer, bounded by curvilinear surfaces, at constant voltage

Study of the Dielectric and Corona Resistance Properties of PI Films Modified with Fluorene Moiety/Aluminum Sec-Butoxide

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