Evaluation of Thermal and Electrical Properties of Nano-Enhanced PCM for Usage in High-Voltage Systems

2019 ◽  
Author(s):  
Ange-Christian Iradukunda ◽  
Josh Kasitz ◽  
Fernando Moreno ◽  
David Huitink
Keyword(s):  
Thermal Properties ◽  
High Voltage ◽  
Phase Change Materials ◽  
Heat Removal ◽  
Dielectric Strength ◽  
Electronic Packages ◽  
Iron Oxide Particles ◽  
Rapid Temperature ◽  
Thermal And Electrical Properties ◽  
Oxide Particles

Abstract Rapid temperature transients sustained during operation of high voltage electronics can be difficult to manage by relying solely on uniform heat removal mechanisms. Phase Change Materials (PCMs) can be useful as a buffer against these intermittent temperature spikes when integrated into electronic packages. However, their integration poses challenges of both physical and electrical interactions within the package, particularly in high voltage systems. The present study aims to evaluate electrical and thermal properties of nano-enhanced PCMs to inform integration in high voltage systems. The nanocomposites are obtained by seeding 0.0006–0.12 wt% of Gold, Graphene Oxide, and Iron Oxide particles to Sorbitol. Improvements in thermal properties including latent heat as high as 15% are observed; however, this comes at the expense of dielectric strength of the PCM.

Concurrent Thermal and Electrical Property Effects of Nano-Enhanced Phase Change Material for High-Voltage Electronics Applications

2020 ◽  
Vol 142 (3) ◽  
Author(s):  
Ange-Christian Iradukunda ◽  
Josh Kasitz ◽  
Hayden Carlton ◽  
David Huitink ◽  
Amol Deshpande ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Phase Change ◽  
High Voltage ◽  
Phase Change Materials ◽  
Heat Removal ◽  
Dielectric Strength ◽  
Power Module ◽  
Iron Oxide Particles ◽  
Implementation Scheme ◽  
Rapid Temperature

Abstract Rapid temperature transients sustained during the operation of high-voltage electronics can be difficult to manage by relying solely on uniform heat removal mechanisms. Phase-change materials (PCMs) can be useful as a buffer against these intermittent temperature spikes when integrated into electronic packages. However, their integration poses challenges of both physical and electrical interactions within the package, particularly in high-voltage systems. This study aims to evaluate electrical and thermal properties of nano-enhanced PCMs to inform their integration in high-voltage systems. The nanocomposites are obtained by seeding 3 × 10−5 and 3 × 10−4 wt % of gold and iron oxide particles to sorbitol. Improvements in thermal properties including thermal conductivity as high as 8% are observed; however, this comes at the expense of the dielectric strength of the PCM. Additionally, an implementation scheme for the nano-enhanced PCMs in a high-voltage-capable power module is proposed with accompanying computational and experimental performance data.

Effect of hybrid-SiO2 particles on characterization of EPDM and silicone rubber composites for outdoor high-voltage insulations

2017 ◽  
Vol 37 (7) ◽  
pp. 671-680 ◽  
Author(s):  
Hidayatullah Khan ◽  
Muhammad Amin ◽  
Muhammad Yasin ◽  
Muhammad Ali ◽  
Ayaz Ahmad
Keyword(s):  
High Voltage ◽  
Silicone Rubber ◽  
Hybrid Composites ◽  
Standard Procedure ◽  
Research Work ◽  
Dielectric Strength ◽  
Hybrid Silica ◽  
Roll Mill ◽  
Thermal And Electrical Properties

Abstract Ethylene propylene diene monomer (EPDM) and silicone rubber (SiR) are well-known polymers for high-voltage (HV) outdoor applications. In this research work, the effect of hybrid SiO2 (a mixture of 15% microsized and 5% nanosized silica) has been investigated on the mechanical, thermal, and electrical properties of EPDM and SiR composites. Using the ASTM standard procedure, the EPDM and SiR composites filled with hybrid silica were compounded by two roll mill and simple blending techniques, respectively. It was observed that with the addition of hybrid SiO2, the composites exhibited improved tensile strength of ~2500 kPa, reduced elongation at break, and enhanced hardness. The samples filled with SiR hybrid silica showed higher thermal stability and volume/surface resistivities relative to EPDM hybrid composites. However, EPDM hybrid composites showed higher dielectric strength of ~23.4 kV/mm as compared with SiR composites. From these characterization results, it can be suggested that SiR hybrid composites are more suitable for outdoor HV insulation applications.

scholarly journals Preparation and characterization of EPDM-silica nano/micro composites for high voltage insulation applications

2015 ◽  
Vol 33 (1) ◽  
pp. 213-219 ◽  
Author(s):  
Muhammad Ali ◽  
Muhammad Ahmad Choudhry
Keyword(s):  
Electrical Properties ◽  
High Voltage ◽  
Dielectric Strength ◽  
Mechanical And Thermal Properties ◽  
Roll Mill ◽  
Thermal And Electrical Properties ◽  
High Voltage Insulation ◽  
Polymer Insulators ◽  
The Comparative Study

AbstractThe rising market for substitute materials in high voltage insulation components is stimulated largely by the need to reduce overall costs. In this respect, polymer insulators offer significant advantages over old traditional materials. In the present research, efforts have been made to quantify the effect of silica (having different particle size nano, micro and hybrid) loading on the mechanical and thermal behaviors of Ethylene-Propylene-Diene Monomer (EPDM) based high voltage electrical insulations. The fabricated composites were subjected to mechanical, thermal and electrical properties measurements. The results of dielectric strength, surface and volume resistivities showed that all composites had insulator properties, while their mechanical and thermal properties improved considerably. EPDM was compounded with different types of silica in a two roll mill using sulphur cure system. The outcome achieved from the comparative study revealed that the EPDM nanocomposites had enhanced mechanical, thermal and electrical properties even at 5 % loadings.

scholarly journals Aqueous one-pot synthesis of well-defined zwitterionic diblock copolymers by RAFT polymerization: an efficient and environmentally-friendly route to a useful dispersant for aqueous pigments

2021 ◽  
Vol 23 (3) ◽  
pp. 1248-1258
Author(s):  
Shannon M. North ◽  
Steven P. Armes
Keyword(s):  
Iron Oxide ◽  
Diblock Copolymers ◽  
Raft Polymerization ◽  
Environmentally Friendly ◽  
Iron Oxide Particles ◽  
One Pot ◽  
One Pot Synthesis ◽  
Highly Effective ◽  
Oxide Particles

An atom-efficient, wholly aqueous one-pot synthesis of zwitterionic diblock copolymers has been devised. Such copolymers can serve as highly effective aqueous dispersants for nano-sized transparent yellow iron oxide particles.

scholarly journals Development of PE/PCL Bilayer Films Modified with Casein and Aluminum Oxide

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3090
Author(s):  
Anita Ptiček Siročić ◽  
Ana Rešček ◽  
Zvonimir Katančić ◽  
Zlata Hrnjak-Murgić
Keyword(s):  
Mechanical Properties ◽  
Thermal Properties ◽  
Water Vapor ◽  
Aluminum Oxide ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Mechanical And Thermal Properties ◽  
Oxide Compound ◽  
Bilayer Films ◽  
Oxide Particles

The studied samples were prepared from polyethylene (PE) polymer which was coated with modified polycaprolactone (PCL) film in order to obtain bilayer films. Thin PCL film was modified with casein/aluminum oxide compound to enhance vapor permeability as well as mechanical and thermal properties of PE/PCL films. Casein/aluminum oxide modifiers were used in order to achieve some functional properties of polymer film that can be used in various applications, e.g., reduction of water vapor permeability (WVTR) and good mechanical and thermal properties. Significant improvement was observed in mechanical properties, especially in tensile strength as well as in water vapor values. Samples prepared with aluminum oxide particles indicated significantly lower values up to 60%, and samples that were prepared with casein and 5% Al2O3 showed the lowest WVTR value.

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