Highly electrically conductive polyether composites with modified graphene
With the continuous improvement in the voltage, power, and capacity levels of high-voltage transmission and substation equipment, the problems of power loss and equipment failure caused by the abnormal heating of electrical contact parts are becoming increasingly severe. In the present study, to add...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ad92f3 |
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| author | Faping Hu Yongjie Nie Ronghai Liu Jinmei Cao |
| author_facet | Faping Hu Yongjie Nie Ronghai Liu Jinmei Cao |
| author_sort | Faping Hu |
| collection | DOAJ |
| description | With the continuous improvement in the voltage, power, and capacity levels of high-voltage transmission and substation equipment, the problems of power loss and equipment failure caused by the abnormal heating of electrical contact parts are becoming increasingly severe. In the present study, to address this problem, graphite was exfoliated into thin layers of graphene using liquid-phase mechanical exfoliation, ultrasonic dispersion, and spray-drying techniques and incorporated into polyether composites to increase its electrical conductivity. The effects of the graphene content on the electrical conductivity, high-temperature resistance, wear reduction, and antiwear properties of the polyether composites were investigated. The results indicated that when 4 wt% graphene was added, the high-temperature resistance of the graphene–polyether composite (GPC) increased to 330 °C, and the volume resistivity decreased to 6.5 × 10 ^3 Ω·cm. Moreover, the contact-resistance coefficient of the GPC was reduced to 0.87 and 0.73 after it was coated on Cu and Al rows, respectively, which significantly increased the electrical conductivity of the electrical contact area. The most significant improvements in friction-reduction and antiwear properties were obtained for the polyether composites from this formulation. GPC has excellent electrical conductivity, high-temperature resistance, wear reduction, and antiwear properties and thus can substantially improve the quality of electrical connections when applied to electrical contact tips. |
| format | Article |
| id | doaj-art-751b9c6d4e94409abd4a61b84d77a190 |
| institution | Kabale University |
| issn | 2053-1591 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj-art-751b9c6d4e94409abd4a61b84d77a1902024-12-04T15:37:59ZengIOP PublishingMaterials Research Express2053-15912024-01-01111212630310.1088/2053-1591/ad92f3Highly electrically conductive polyether composites with modified grapheneFaping Hu0https://orcid.org/0009-0000-0174-8991Yongjie Nie1Ronghai Liu2Jinmei Cao3https://orcid.org/0009-0001-9103-4577Electric Power Research Institute, Yunnan Power Grid Co., Ltd , Kunming, Yunnan 650217, People’s Republic of ChinaElectric Power Research Institute, Yunnan Power Grid Co., Ltd , Kunming, Yunnan 650217, People’s Republic of ChinaElectric Power Research Institute, Yunnan Power Grid Co., Ltd , Kunming, Yunnan 650217, People’s Republic of ChinaSchool of Electrical Engineering, Beijing Jiaotong University , Beijing 100044, People’s Republic of ChinaWith the continuous improvement in the voltage, power, and capacity levels of high-voltage transmission and substation equipment, the problems of power loss and equipment failure caused by the abnormal heating of electrical contact parts are becoming increasingly severe. In the present study, to address this problem, graphite was exfoliated into thin layers of graphene using liquid-phase mechanical exfoliation, ultrasonic dispersion, and spray-drying techniques and incorporated into polyether composites to increase its electrical conductivity. The effects of the graphene content on the electrical conductivity, high-temperature resistance, wear reduction, and antiwear properties of the polyether composites were investigated. The results indicated that when 4 wt% graphene was added, the high-temperature resistance of the graphene–polyether composite (GPC) increased to 330 °C, and the volume resistivity decreased to 6.5 × 10 ^3 Ω·cm. Moreover, the contact-resistance coefficient of the GPC was reduced to 0.87 and 0.73 after it was coated on Cu and Al rows, respectively, which significantly increased the electrical conductivity of the electrical contact area. The most significant improvements in friction-reduction and antiwear properties were obtained for the polyether composites from this formulation. GPC has excellent electrical conductivity, high-temperature resistance, wear reduction, and antiwear properties and thus can substantially improve the quality of electrical connections when applied to electrical contact tips.https://doi.org/10.1088/2053-1591/ad92f3graphenegraphene-polyether compositeelectrical conductivityfriction and wear properties |
| spellingShingle | Faping Hu Yongjie Nie Ronghai Liu Jinmei Cao Highly electrically conductive polyether composites with modified graphene Materials Research Express graphene graphene-polyether composite electrical conductivity friction and wear properties |
| title | Highly electrically conductive polyether composites with modified graphene |
| title_full | Highly electrically conductive polyether composites with modified graphene |
| title_fullStr | Highly electrically conductive polyether composites with modified graphene |
| title_full_unstemmed | Highly electrically conductive polyether composites with modified graphene |
| title_short | Highly electrically conductive polyether composites with modified graphene |
| title_sort | highly electrically conductive polyether composites with modified graphene |
| topic | graphene graphene-polyether composite electrical conductivity friction and wear properties |
| url | https://doi.org/10.1088/2053-1591/ad92f3 |
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