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Study on Scorch Resistance and Insulating Properties of Cross-linked Polyethylene for High Voltage Cables
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Hongda YAN1, Wenpeng LI1, Weikang LI1, Xiaoning SHI1, Honglei LI2, Chong ZHANG1
Insulating Materials | 2022, 55(8) : 22 - 27
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Insulating Materials | 2022, 55(8): 22-27
• Material Research •
Study on Scorch Resistance and Insulating Properties of Cross-linked Polyethylene for High Voltage Cables
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Hongda YAN1, Wenpeng LI1, Weikang LI1, Xiaoning SHI1, Honglei LI2, Chong ZHANG1
Affiliations
  • 1Global Energy Interconnection Research Institute Co., Ltd., Beijing 102211, China
  • 2State Grid Shanghai Municipal Electric Power Company, Shanghai 200122, China
Published: 2022-08-20 doi: 10.16790/j.cnki.1009-9239.im.2022.08.004
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In order to achieve long-term stable extrusion of insulating materials, a cross-linked polyethylene with different antioxidant content was prepared by melt blending, and the effect of different antioxidant content on the scorch resistance of cross-linked polyethylene was studied. At the same time, the mechanical properties, electric strength, dielectric properties, and thermal properties of cross-linked polyethylene were comprehensively evaluated. The results show that with the increase of antioxidant content, the torque of cross-linked polyethylene decreases gradually, the cross-link time increases slowly, and the scorch resistance of the material is improved. In addition, the temperature of cross-linked polyethylene material is reduced slightly, which ensures the stability of long-term extrusion for material. The conductivity of cross-linked polyethylene does not change significantly with the increase of antioxidant content, while the AC electric strength and dielectric loss increase slightly. The AC electric strength increases by 4.5%, the dielectric loss factor is less than 5.0×10-4, and the melting and crystallization characteristics do not change significantly.

scorch resistance  /  torque  /  AC electric strength  /  dielectric properties  /  thermal performance
Hongda YAN, Wenpeng LI, Weikang LI, Xiaoning SHI, Honglei LI, Chong ZHANG. Study on Scorch Resistance and Insulating Properties of Cross-linked Polyethylene for High Voltage Cables[J]. Insulating Materials, 2022 , 55 (8) : 22 -27 . DOI: 10.16790/j.cnki.1009-9239.im.2022.08.004
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2022.08.004
  • Receive Date：2021-08-11
  • Online Date：2025-12-23
  • Published：2022-08-20
Article Data
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History
  • Received：2021-08-11
  • Revised：2021-09-13
Funding
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    1Global Energy Interconnection Research Institute Co., Ltd., Beijing 102211, China
    2State Grid Shanghai Municipal Electric Power Company, Shanghai 200122, China
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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