Effect of Carbon Fibres on Electromagnetic-Interference-Shielding Properties of Geopolymer Composites
Many of the construction materials available are known to cause a drastic level of damage to the environment during their manufacturing stages. Hence, many researchers have attempted to formulate construction materials that are more environmentally friendly. Additionally, the rise in wireless commun...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Polymers |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4360/14/18/3750 |
| _version_ | 1797483365778063360 |
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| author | Dimuthu Wanasinghe Farhad Aslani Guowei Ma |
| author_facet | Dimuthu Wanasinghe Farhad Aslani Guowei Ma |
| author_sort | Dimuthu Wanasinghe |
| collection | DOAJ |
| description | Many of the construction materials available are known to cause a drastic level of damage to the environment during their manufacturing stages. Hence, many researchers have attempted to formulate construction materials that are more environmentally friendly. Additionally, the rise in wireless communications in recent decades has seen a rapid increase in electromagnetic pollution and interference, which affects the functionality of sensitive electronic devices. This research is focused on fabricating a more sustainable construction material that could prevent electromagnetic interference for electronic devices housed inside. Carbon fibres of three different lengths were added in four variations to a geopolymer control mix to study their effect on electromagnetic interference shielding. The results showed that the amount of shielding produced by these composites increases with carbon fibre length and quantity. Morphological analyses showed that the interconnectivity of the fibres plays a crucial role in having a high level of shielding. While the flexural strength showed an improvement with the addition of carbon fibre, the compressive strength showed a slight reduction with the increase in carbon fibre length. The optimal level of shielding was produced by the specimen containing 0.7% of 12 mm carbon fibre, which was the maximum amount of fibre of any length used in this study; the optimal level of shielding generated was 43.43 dB within the frequency range of 30 MHz to 1.5 GHz. |
| first_indexed | 2024-03-09T22:46:54Z |
| format | Article |
| id | doaj.art-da6b08a59f6044f4a08d697a0a1cafc8 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T22:46:54Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-da6b08a59f6044f4a08d697a0a1cafc82023-11-23T18:29:16ZengMDPI AGPolymers2073-43602022-09-011418375010.3390/polym14183750Effect of Carbon Fibres on Electromagnetic-Interference-Shielding Properties of Geopolymer CompositesDimuthu Wanasinghe0Farhad Aslani1Guowei Ma2Materials and Structures Innovation Group, School of Engineering, The University of Western Australia, Perth, WA 6009, AustraliaMaterials and Structures Innovation Group, School of Engineering, The University of Western Australia, Perth, WA 6009, AustraliaMaterials and Structures Innovation Group, School of Engineering, The University of Western Australia, Perth, WA 6009, AustraliaMany of the construction materials available are known to cause a drastic level of damage to the environment during their manufacturing stages. Hence, many researchers have attempted to formulate construction materials that are more environmentally friendly. Additionally, the rise in wireless communications in recent decades has seen a rapid increase in electromagnetic pollution and interference, which affects the functionality of sensitive electronic devices. This research is focused on fabricating a more sustainable construction material that could prevent electromagnetic interference for electronic devices housed inside. Carbon fibres of three different lengths were added in four variations to a geopolymer control mix to study their effect on electromagnetic interference shielding. The results showed that the amount of shielding produced by these composites increases with carbon fibre length and quantity. Morphological analyses showed that the interconnectivity of the fibres plays a crucial role in having a high level of shielding. While the flexural strength showed an improvement with the addition of carbon fibre, the compressive strength showed a slight reduction with the increase in carbon fibre length. The optimal level of shielding was produced by the specimen containing 0.7% of 12 mm carbon fibre, which was the maximum amount of fibre of any length used in this study; the optimal level of shielding generated was 43.43 dB within the frequency range of 30 MHz to 1.5 GHz.https://www.mdpi.com/2073-4360/14/18/3750geopolymerelectromagnetic shieldingcarbon fibreconductive composite |
| spellingShingle | Dimuthu Wanasinghe Farhad Aslani Guowei Ma Effect of Carbon Fibres on Electromagnetic-Interference-Shielding Properties of Geopolymer Composites Polymers geopolymer electromagnetic shielding carbon fibre conductive composite |
| title | Effect of Carbon Fibres on Electromagnetic-Interference-Shielding Properties of Geopolymer Composites |
| title_full | Effect of Carbon Fibres on Electromagnetic-Interference-Shielding Properties of Geopolymer Composites |
| title_fullStr | Effect of Carbon Fibres on Electromagnetic-Interference-Shielding Properties of Geopolymer Composites |
| title_full_unstemmed | Effect of Carbon Fibres on Electromagnetic-Interference-Shielding Properties of Geopolymer Composites |
| title_short | Effect of Carbon Fibres on Electromagnetic-Interference-Shielding Properties of Geopolymer Composites |
| title_sort | effect of carbon fibres on electromagnetic interference shielding properties of geopolymer composites |
| topic | geopolymer electromagnetic shielding carbon fibre conductive composite |
| url | https://www.mdpi.com/2073-4360/14/18/3750 |
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