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Research progress of high thermal conductive insulating materials for motor
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Hongliang MA1, 2, Yan LIU1, 2, Ruijuan ZHENG1, 2, Jiexin FAN1, 2, Guanfang LIU1, 2, *
Insulating Materials | 2026, 59(3) : 110 - 116
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Insulating Materials | 2026, 59(3): 110-116
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Research progress of high thermal conductive insulating materials for motor
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Hongliang MA1, 2, Yan LIU1, 2, Ruijuan ZHENG1, 2, Jiexin FAN1, 2, Guanfang LIU1, 2, *
Affiliations
  • 1CRRC Yongji Electric Co., Ltd., Yongji 044502, China
  • 2Shanxi Key Laboratory of Traction Motor for Rail Transit, Yongji 044502, China
Published: 2026-03-20 doi: 10.16790/j.cnki.1009-9239.im.2026.03.012
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High thermal conductive insulating materials are key functional materials for achieving efficient heat dissipation in motors, which is of great significance for improving the operational stability and prolonging the service life of motors. This article briefly described the thermal conductive modification mechanisms of insulating materials,reviewed recent research progress on high thermal conductive insulating varnish, mica tapes, films, and potting compounds used in motors, discussed their current application status in the field of motors, and further provided an outlook on future research direction.

high thermal conductive  /  insulating materials  /  insulation structure  /  motor
Hongliang MA, Yan LIU, Ruijuan ZHENG, Jiexin FAN, Guanfang LIU. Research progress of high thermal conductive insulating materials for motor[J]. Insulating Materials, 2026 , 59 (3) : 110 -116 . DOI: 10.16790/j.cnki.1009-9239.im.2026.03.012
Year 2026 volume 59 Issue 3
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2026.03.012
  • Receive Date:2025-06-03
  • Online Date:2026-09-10
  • Published:2026-03-20
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  • Received:2025-06-03
  • Revised:2025-07-09
Affiliations
    1CRRC Yongji Electric Co., Ltd., Yongji 044502, China
    2Shanxi Key Laboratory of Traction Motor for Rail Transit, Yongji 044502, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2026.03.012
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

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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