Aging mechanism of HTV silicone rubber loaded with hybrid nano/micro silica and alumina exposed to concurrent multistress
Due to their many benefits, especially their high hydrophobicity, silicone rubber-based composite materials gradually substitute conventional porcelain and glass insulators. However, polymeric-based materials are degraded when subjected to various external environmental stresses, which deteriorates...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-04-01
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| Series: | Polymer Testing |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S014294182300065X |
| _version_ | 1797854338571304960 |
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| author | Rahmat Ullah Rahisham Abd Rahman Rizwan Ahmed Khan Wali Israr Ullah |
| author_facet | Rahmat Ullah Rahisham Abd Rahman Rizwan Ahmed Khan Wali Israr Ullah |
| author_sort | Rahmat Ullah |
| collection | DOAJ |
| description | Due to their many benefits, especially their high hydrophobicity, silicone rubber-based composite materials gradually substitute conventional porcelain and glass insulators. However, polymeric-based materials are degraded when subjected to various external environmental stresses, which deteriorates their anticipated qualities and shortens their lifetime. This study investigates the aging characteristics of five types of high-temperature vulcanized silicone rubber (HTV-SR) filled with nano-silica/micro-alumina. Samples of materials with different specifications were subjected to various environmental conditions in a specialized weather chamber for 5000 h. The degree of deterioration was analyzed using multiple diagnostic methods: hydrophobicity categorization, fourier transform infrared spectroscopy, leakage current, mechanical property testing, and thermogravimetric analysis. The experimental results showed that SR impregnated with low-level nano silica filler revealed superior anti-aging properties compared to its high concentration and unfilled counterpart. SP-3 (2% nano-silica and 10% micro-alumina) displayed the lowest surface roughness and the best hydrophobicity among the composite test samples. In addition, the highest tensile strength (4.1 MPa) and lowest leakage current (2.5 μA) were recorded. The composite containing 2% nano-silica appears to be the highest resistance candidate to the multi-stress aging test, which can be explained by the strong molecular contact amongst nano-silica and SR. |
| first_indexed | 2024-04-09T20:05:29Z |
| format | Article |
| id | doaj.art-87f38e2b20ef4fd89da5fcd460580083 |
| institution | Directory Open Access Journal |
| issn | 0142-9418 |
| language | English |
| last_indexed | 2024-04-09T20:05:29Z |
| publishDate | 2023-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Polymer Testing |
| spelling | doaj.art-87f38e2b20ef4fd89da5fcd4605800832023-04-02T06:11:29ZengElsevierPolymer Testing0142-94182023-04-01121107985Aging mechanism of HTV silicone rubber loaded with hybrid nano/micro silica and alumina exposed to concurrent multistressRahmat Ullah0Rahisham Abd Rahman1Rizwan Ahmed2Khan Wali3Israr Ullah4Faculty of Electrical and Electronic Engineering, University Tun Hussein Onn Malaysia, Batu Pahat, 86400, MalaysiaFaculty of Electrical and Electronic Engineering, University Tun Hussein Onn Malaysia, Batu Pahat, 86400, Malaysia; Corresponding author.Faculty of Electrical and Electronic Engineering, University Tun Hussein Onn Malaysia, Batu Pahat, 86400, MalaysiaFarm Technology Group, Wageningen University & Research, the Netherlands; Corresponding author.Faculty of Electrical Engineering, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi, PakistanDue to their many benefits, especially their high hydrophobicity, silicone rubber-based composite materials gradually substitute conventional porcelain and glass insulators. However, polymeric-based materials are degraded when subjected to various external environmental stresses, which deteriorates their anticipated qualities and shortens their lifetime. This study investigates the aging characteristics of five types of high-temperature vulcanized silicone rubber (HTV-SR) filled with nano-silica/micro-alumina. Samples of materials with different specifications were subjected to various environmental conditions in a specialized weather chamber for 5000 h. The degree of deterioration was analyzed using multiple diagnostic methods: hydrophobicity categorization, fourier transform infrared spectroscopy, leakage current, mechanical property testing, and thermogravimetric analysis. The experimental results showed that SR impregnated with low-level nano silica filler revealed superior anti-aging properties compared to its high concentration and unfilled counterpart. SP-3 (2% nano-silica and 10% micro-alumina) displayed the lowest surface roughness and the best hydrophobicity among the composite test samples. In addition, the highest tensile strength (4.1 MPa) and lowest leakage current (2.5 μA) were recorded. The composite containing 2% nano-silica appears to be the highest resistance candidate to the multi-stress aging test, which can be explained by the strong molecular contact amongst nano-silica and SR.http://www.sciencedirect.com/science/article/pii/S014294182300065XAgingPolymeric-based composites insulatorsSilicaAluminaSilicone rubber |
| spellingShingle | Rahmat Ullah Rahisham Abd Rahman Rizwan Ahmed Khan Wali Israr Ullah Aging mechanism of HTV silicone rubber loaded with hybrid nano/micro silica and alumina exposed to concurrent multistress Polymer Testing Aging Polymeric-based composites insulators Silica Alumina Silicone rubber |
| title | Aging mechanism of HTV silicone rubber loaded with hybrid nano/micro silica and alumina exposed to concurrent multistress |
| title_full | Aging mechanism of HTV silicone rubber loaded with hybrid nano/micro silica and alumina exposed to concurrent multistress |
| title_fullStr | Aging mechanism of HTV silicone rubber loaded with hybrid nano/micro silica and alumina exposed to concurrent multistress |
| title_full_unstemmed | Aging mechanism of HTV silicone rubber loaded with hybrid nano/micro silica and alumina exposed to concurrent multistress |
| title_short | Aging mechanism of HTV silicone rubber loaded with hybrid nano/micro silica and alumina exposed to concurrent multistress |
| title_sort | aging mechanism of htv silicone rubber loaded with hybrid nano micro silica and alumina exposed to concurrent multistress |
| topic | Aging Polymeric-based composites insulators Silica Alumina Silicone rubber |
| url | http://www.sciencedirect.com/science/article/pii/S014294182300065X |
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