Influence of water ageing on variation in space charge and thermo‐mechanical properties of epoxy micro‐nano composites
Abstract Water ageing was carried out with epoxy micro–nano composite specimen. Silica micro particles and ion trapping nano particles were used as filler material in the composite specimens. Water ageing was carried out under room temperature and at 90 °C, to analyse the impact of water intake on s...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | IET Science, Measurement & Technology |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/smt2.12005 |
| _version_ | 1797901553771741184 |
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| author | Myneni Sukesh Babu Ramachandran Velmurugan Ramanujam Sarathi Takahiro Imai |
| author_facet | Myneni Sukesh Babu Ramachandran Velmurugan Ramanujam Sarathi Takahiro Imai |
| author_sort | Myneni Sukesh Babu |
| collection | DOAJ |
| description | Abstract Water ageing was carried out with epoxy micro–nano composite specimen. Silica micro particles and ion trapping nano particles were used as filler material in the composite specimens. Water ageing was carried out under room temperature and at 90 °C, to analyse the impact of water intake on space charge accumulation and charge decay characteristics. The threshold for space charge accumulation in epoxy specimens reduces, while the rate of space charge accumulation increases after water ageing. The initial surface potential had a marginal increment and the rate of surface potential decay has reduced significantly after water absorption. Trap distribution characteristics confirm the existence of deeper traps and charge mobility reduction in case of water aged specimens. The dynamic mechanical analysis have confirmed the viscoelastic behaviour of epoxy micro–nano composite specimens, is sensitive to the water absorption. Glass transition temperature of epoxy specimen after water absorption has shifted to lower temperatures due to plasticisation of polymer matrix and ascertained with the reduction in the activation energy. Digital image correlation method has been adopted to determine strain field distribution and displacement of the specimen under mechanical loading. Thermo gravimetric Analysis have confirmed the reduction in thermal stability resulting for water aged specimens. |
| first_indexed | 2024-04-10T09:03:44Z |
| format | Article |
| id | doaj.art-d09c878d9b384834a94524f76f1c7f68 |
| institution | Directory Open Access Journal |
| issn | 1751-8822 1751-8830 |
| language | English |
| last_indexed | 2024-04-10T09:03:44Z |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Science, Measurement & Technology |
| spelling | doaj.art-d09c878d9b384834a94524f76f1c7f682023-02-21T09:05:56ZengWileyIET Science, Measurement & Technology1751-88221751-88302021-01-01151446010.1049/smt2.12005Influence of water ageing on variation in space charge and thermo‐mechanical properties of epoxy micro‐nano compositesMyneni Sukesh Babu0Ramachandran Velmurugan1Ramanujam Sarathi2Takahiro Imai3Department of Electrical Engineering Indian Institute of Technology Madras Chennai IndiaDepartment of Aerospace Engineering Indian Institute of Technology Madras Chennai IndiaDepartment of Electrical Engineering Indian Institute of Technology Madras Chennai IndiaInfrastructure Systems Research and Development Center Toshiba Infrastructure Systems and Solutions Corporation 1, Toshiba‐cho, Fuchu‐shi Tokyo JapanAbstract Water ageing was carried out with epoxy micro–nano composite specimen. Silica micro particles and ion trapping nano particles were used as filler material in the composite specimens. Water ageing was carried out under room temperature and at 90 °C, to analyse the impact of water intake on space charge accumulation and charge decay characteristics. The threshold for space charge accumulation in epoxy specimens reduces, while the rate of space charge accumulation increases after water ageing. The initial surface potential had a marginal increment and the rate of surface potential decay has reduced significantly after water absorption. Trap distribution characteristics confirm the existence of deeper traps and charge mobility reduction in case of water aged specimens. The dynamic mechanical analysis have confirmed the viscoelastic behaviour of epoxy micro–nano composite specimens, is sensitive to the water absorption. Glass transition temperature of epoxy specimen after water absorption has shifted to lower temperatures due to plasticisation of polymer matrix and ascertained with the reduction in the activation energy. Digital image correlation method has been adopted to determine strain field distribution and displacement of the specimen under mechanical loading. Thermo gravimetric Analysis have confirmed the reduction in thermal stability resulting for water aged specimens.https://doi.org/10.1049/smt2.12005Structure of solid clusters, nanoparticles, nanotubes and nanostructured materialsDeformation and plasticityAnelasticity, internal friction and mechanical resonancesGlass transitionsHigh‐field transport and nonlinear effects (semiconductors/insulators)Dielectric breakdown and space‐charge effects |
| spellingShingle | Myneni Sukesh Babu Ramachandran Velmurugan Ramanujam Sarathi Takahiro Imai Influence of water ageing on variation in space charge and thermo‐mechanical properties of epoxy micro‐nano composites IET Science, Measurement & Technology Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials Deformation and plasticity Anelasticity, internal friction and mechanical resonances Glass transitions High‐field transport and nonlinear effects (semiconductors/insulators) Dielectric breakdown and space‐charge effects |
| title | Influence of water ageing on variation in space charge and thermo‐mechanical properties of epoxy micro‐nano composites |
| title_full | Influence of water ageing on variation in space charge and thermo‐mechanical properties of epoxy micro‐nano composites |
| title_fullStr | Influence of water ageing on variation in space charge and thermo‐mechanical properties of epoxy micro‐nano composites |
| title_full_unstemmed | Influence of water ageing on variation in space charge and thermo‐mechanical properties of epoxy micro‐nano composites |
| title_short | Influence of water ageing on variation in space charge and thermo‐mechanical properties of epoxy micro‐nano composites |
| title_sort | influence of water ageing on variation in space charge and thermo mechanical properties of epoxy micro nano composites |
| topic | Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials Deformation and plasticity Anelasticity, internal friction and mechanical resonances Glass transitions High‐field transport and nonlinear effects (semiconductors/insulators) Dielectric breakdown and space‐charge effects |
| url | https://doi.org/10.1049/smt2.12005 |
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