Study on hydrophobicity and aging characteristics of epoxy resin modified with nano-MgO
The 10 kV switchgear is widely utilized in power systems due to its convenience and reliability. However, in high-humidity environments, switchgear is susceptible to condensation, which can severely damage its internal insulation components. To address this issue, this study modifies epoxy resin (EP...
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| Format: | Article |
| Language: | English |
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De Gruyter
2024-11-01
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| Series: | e-Polymers |
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| Online Access: | https://doi.org/10.1515/epoly-2024-0067 |
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| _version_ | 1846143477069381632 |
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| author | Zhou Lijun Min Xiyao Fu Anzhi Chen Jihui Chen Sixiang Xia Yingyi Zhao Chen Wang Dongyang |
| author_facet | Zhou Lijun Min Xiyao Fu Anzhi Chen Jihui Chen Sixiang Xia Yingyi Zhao Chen Wang Dongyang |
| author_sort | Zhou Lijun |
| collection | DOAJ |
| description | The 10 kV switchgear is widely utilized in power systems due to its convenience and reliability. However, in high-humidity environments, switchgear is susceptible to condensation, which can severely damage its internal insulation components. To address this issue, this study modifies epoxy resin (EP) by incorporating nano-MgO to improve its hydrophobic properties. Initially, molecular dynamics simulations were conducted to determine the optimal doping ratio of nano-MgO by evaluating modified materials with varying concentrations. MgO/EP composites were then synthesized with nano-MgO doping levels of 1, 5, 10, and 15 wt%, and their hydrophobic and electrothermal properties were assessed. Following this, a thermal aging test was performed to evaluate the long-term performance of the composites. The findings demonstrate that the addition of nano-MgO enhances the hydrophobicity, thermal conductivity, and insulating properties of the EP. Specifically, as the concentration of nano-MgO increases, both the contact angle and thermal conductivity of the composites improve, while the volume resistivity first increases and then decreases with higher nano-MgO content. Nonetheless, all composites consistently outperform pure EP. Throughout each aging stage, the contact angle, thermal conductivity, and volume resistivity of the nano-MgO-modified EP remain superior to those of the unmodified EP. |
| format | Article |
| id | doaj-art-0bc7c14265974f2bb2ac1715e82f6fef |
| institution | Kabale University |
| issn | 1618-7229 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | e-Polymers |
| spelling | doaj-art-0bc7c14265974f2bb2ac1715e82f6fef2024-12-02T12:03:57ZengDe Gruytere-Polymers1618-72292024-11-0124143314510.1515/epoly-2024-0067Study on hydrophobicity and aging characteristics of epoxy resin modified with nano-MgOZhou Lijun0Min Xiyao1Fu Anzhi2Chen Jihui3Chen Sixiang4Xia Yingyi5Zhao Chen6Wang Dongyang7School of Electrical Engineering, Southwest Jiaotong University, Chengdu, 611756, ChinaSchool of Electrical Engineering, Southwest Jiaotong University, Chengdu, 611756, ChinaSchool of Electrical Engineering, Southwest Jiaotong University, Chengdu, 611756, ChinaSchool of Electrical Engineering, Southwest Jiaotong University, Chengdu, 611756, ChinaFoshan Power Supply Bureau of Guangdong Power Grid Co., Ltd, Foshan, 528011, ChinaSchool of Electrical Engineering, Southwest Jiaotong University, Chengdu, 611756, ChinaSchool of Electrical Engineering, Southwest Jiaotong University, Chengdu, 611756, ChinaSchool of Electrical Engineering, Southwest Jiaotong University, Chengdu, 611756, ChinaThe 10 kV switchgear is widely utilized in power systems due to its convenience and reliability. However, in high-humidity environments, switchgear is susceptible to condensation, which can severely damage its internal insulation components. To address this issue, this study modifies epoxy resin (EP) by incorporating nano-MgO to improve its hydrophobic properties. Initially, molecular dynamics simulations were conducted to determine the optimal doping ratio of nano-MgO by evaluating modified materials with varying concentrations. MgO/EP composites were then synthesized with nano-MgO doping levels of 1, 5, 10, and 15 wt%, and their hydrophobic and electrothermal properties were assessed. Following this, a thermal aging test was performed to evaluate the long-term performance of the composites. The findings demonstrate that the addition of nano-MgO enhances the hydrophobicity, thermal conductivity, and insulating properties of the EP. Specifically, as the concentration of nano-MgO increases, both the contact angle and thermal conductivity of the composites improve, while the volume resistivity first increases and then decreases with higher nano-MgO content. Nonetheless, all composites consistently outperform pure EP. Throughout each aging stage, the contact angle, thermal conductivity, and volume resistivity of the nano-MgO-modified EP remain superior to those of the unmodified EP.https://doi.org/10.1515/epoly-2024-0067epoxy resinnano-mgomolecular dynamics simulationhydrophobicity |
| spellingShingle | Zhou Lijun Min Xiyao Fu Anzhi Chen Jihui Chen Sixiang Xia Yingyi Zhao Chen Wang Dongyang Study on hydrophobicity and aging characteristics of epoxy resin modified with nano-MgO e-Polymers epoxy resin nano-mgo molecular dynamics simulation hydrophobicity |
| title | Study on hydrophobicity and aging characteristics of epoxy resin modified with nano-MgO |
| title_full | Study on hydrophobicity and aging characteristics of epoxy resin modified with nano-MgO |
| title_fullStr | Study on hydrophobicity and aging characteristics of epoxy resin modified with nano-MgO |
| title_full_unstemmed | Study on hydrophobicity and aging characteristics of epoxy resin modified with nano-MgO |
| title_short | Study on hydrophobicity and aging characteristics of epoxy resin modified with nano-MgO |
| title_sort | study on hydrophobicity and aging characteristics of epoxy resin modified with nano mgo |
| topic | epoxy resin nano-mgo molecular dynamics simulation hydrophobicity |
| url | https://doi.org/10.1515/epoly-2024-0067 |
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