Application and Suitability of Polymeric Materials as Insulators in Electrical Equipment

Abstract

In this paper, the applications of thermoplastic, thermoset polymers, and a brief description of the functions of each subsystem are reviewed. The synthetic route and characteristics of polymeric materials are presented. The mechanical properties of polymers such as impact behavior, tensile test, bending test, and thermal properties like mold stress-relief distortion, generic thermal indices, relative thermal capability, and relative thermal index are mentioned. Furthermore, this paper covers the electrical behavior of polymers, mainly their dielectric strength. Different techniques for evaluating polymers’ suitability applied for electrical insulation are covered, such as partial discharge and high current arc resistance to ignition. The polymeric materials and processes used for manufacturing cables at different voltage ranges are described, and their applications to high voltage DC systems (HVDC) are discussed. The evolution and limitations of polymeric materials for electrical application and their advantages and future trends are mentioned. However, to reduce the high cost of filler networks and improve their technical properties, new techniques need to be developed. To overcome limitations associated with the accuracy of the techniques used for quantifying residual stresses in polymers, new techniques such as indentation are used with higher force at the stressed location.

Structural, optical, dielectric, and surface properties of polyimide hybrid nanocomposites films embedded mesoporous silica nanoparticles synthesized from rice husk ash for optoelectronic applications

“…Polyimides are one of the types of polymers that are particularly suited to the sol-gel technique for the fabrication of nanocomposite materials (Al-Kandary et al 2006;Ragosta and Musto 2009). Where, polyimides have excellent properties such as mechanical properties, resistance to solvents, thermal and oxidative stability, and high glass transition temperature, and else exceedingly utilized in some electronic and electrical applications (Musto et al 2004;Haque et al 2021;Feng and Liu 2018;Hicyilmaz and Bedeloglu 2021). Polyimides nanocomposites based on hybrid inorganic-organic components are classified as novel materials with tailored physical properties (Raman et al 2012).…”

The effect of inorganic particles on the breakdown strength and mechanical properties of EVA‐based composites

“…Polymeric insulating materials have been extensively used in different segments of the transmission/ distribution lines of electrical power industries due to their light mass, anti-corrosive properties, processability and versatility of creating different designs. 1,2 Among several polymers, silicone rubber, [3][4][5] polyethylene, [6][7][8][9] and epoxy resin (ER) [10][11][12] are the most popular for developing electrical insulators, cables and coatings for insulating devices. However, these polymers under outdoor ambient may degrade during long-term operations owing to the action of rain, UV radiation, pollution, etc.…”

Industrial cutting waste granite dust reinforced cardanol benzoxazine/epoxy resin hybrid composites for high‐voltage electrical insulation applications

“…The micro-scaled or nano-scaled inorganic particles reinforced polymer composites has increased their attention in the field of highvoltage engineering applications. 1 The polymer composites provides an improved insulation systems that operate at higher temperatures and electrical stress. 2 The development of advanced polymer based composites also energy-efficient and low cost manufacturing routes in order to bring new material concepts into marketable products.…”

“…The micro‐scaled or nano‐scaled inorganic particles reinforced polymer composites has increased their attention in the field of high‐voltage engineering applications 1 . The polymer composites provides an improved insulation systems that operate at higher temperatures and electrical stress 2 .…”