A review on polyimide reinforced nanocomposites for mechanical, thermal, and electrical insulation application: challeng
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A review on polyimide reinforced nanocomposites for mechanical, thermal, and electrical insulation application: challenges and recommendations for future improvement V. E. Ogbonna1 · A. P. I. Popoola1 · O. M. Popoola2 · S. O. Adeosun3 Received: 25 August 2020 / Revised: 3 November 2020 / Accepted: 11 November 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Polyimide nanocomposites have drawn much attention as mechanical, thermal, and electrical insulation materials due to its superior dielectric, thermal stability, and corona resistance properties. The polyimide nanocomposites are defined as substance of polyimide matrix reinforced with certain weight percent of nanofillers. Researchers have demonstrated the usage of polyimide nanocomposites in mechanical, thermal, and electrical insulation application. However, the nanocomposites are noted to face interfacial bonding issues, which have affected their mechanical performance for thermal and electrical insulation properties. The dielectric behaviour and corona resistance lifetime of the polyimide nanocomposites are reportedly degraded over a long-term exposure to high-temperature environment. Although, there have been an advancement on improving the mechanical, thermal, and electrical properties of polyimide nanocomposites for multifunctional insulations. This review summarises the effects of nanofillers, such as silica (SiO2), titania (TiO2), alumina (Al2O3), graphene’s, nanotubes, boron nitride and some other fillers on the mechanical, thermal, and electrical properties of polyimide nanocomposites for insulation application. The authors concluded the review with advancement, challenges and recommendations for future improvement of polyimide nanocomposites as an insulation material. Thus, the review study offers discernment into the improvement and selection of polyimide nanocomposites material for mechanical, thermal, and electrical insulation. More so, the review will also give a way for further research. Keywords Polyimide · Nanofillers · Nanocomposites · Mechanical properties · Thermal stability · Dielectric properties · Corona resistance properties · Insulation
* V. E. Ogbonna [email protected] Extended author information available on the last page of the article
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Polymer Bulletin
Introduction In recent time, polymer composites have been attracting the attention of researchers and industries as a promising material for electrical and thermal insulation applications from energy storage to power delivery. Polymer matrices, such as epoxy, polyethylene, polyamide, and polyimides have been widely reported on their application for electrical and thermal insulations. In electrical and thermal insulation, polyimides (PIs) are reported to be a new generation of polymers with naturally rigid chains, which is of high commercial importance as dielectric material suitable for electrical insulation [1]. As such, polyimide and its composites were widely employed as excellent electrical and thermal insulatio
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