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Preparation of liquid crystal modified epoxy resin and synergistic enhancement in its thermal-mechanical properties
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Zhiyong SHEN1, Lihua LI1, Mao LI1, Feng CHEN1, Wenjia LI1, Zhengyong HUANG2, *, Hanxiang WANG2
Insulating Materials | 2026, 59(3) : 148 - 154
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Insulating Materials | 2026, 59(3): 148-154
• Material Research •
Preparation of liquid crystal modified epoxy resin and synergistic enhancement in its thermal-mechanical properties
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Zhiyong SHEN1, Lihua LI1, Mao LI1, Feng CHEN1, Wenjia LI1, Zhengyong HUANG2, *, Hanxiang WANG2
Affiliations
  • 1Baihetan Hydropower Plant, China Yangtze Power Co., Ltd., Liangshan 615000, China
  • 2School of Electrical Engineering, Chongqing University, Chongqing 400044, China
Published: 2026-03-20 doi: 10.16790/j.cnki.1009-9239.im.2026.03.017
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This research aims to synergistically enhance the thermal and mechanical properties of epoxy resin to cope with the risk of insulation failure under long-term electrical-thermal-mechanical multi-field coupling conditions. Biphenyl liquid crystal epoxy resin (BLCER) was introduced into the bisphenol A type epoxy resin (E-51) matrix, and liquid crystal-modified epoxy resin was obtained through melt blending followed by curing. The thermal and mechanical properties of the modified resin were tested, and the toughening and thermal conductivity modification mechanisms of BLCER on the resin matrix were analyzed. The results show that the addition of BLCER can enhance the thermal stability and thermal conductivity of the modified resin. When the mass fraction of BLCER reaches 20%, the thermal conductivity of the modified resin increases to 0.382 W/(m·K), which is 2.26 times higher than that of pure E-51. The mechanical properties of the material increase with the content of BLCER. When the mass fraction of BLCER reaches 20%, the tensile and flexural strengths of the modified resin reach 90 MPa and 120.9 MPa, respectively, and the impact strength reaches 40.1 kJ/m2, which are significantly higher than those of pure epoxy resin.

epoxy resin  /  biphenyl liquid crystal  /  thermal properties  /  mechanical properties
Zhiyong SHEN, Lihua LI, Mao LI, Feng CHEN, Wenjia LI, Zhengyong HUANG, Hanxiang WANG. Preparation of liquid crystal modified epoxy resin and synergistic enhancement in its thermal-mechanical properties[J]. Insulating Materials, 2026 , 59 (3) : 148 -154 . DOI: 10.16790/j.cnki.1009-9239.im.2026.03.017
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Year 2026 volume 59 Issue 3
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doi: 10.16790/j.cnki.1009-9239.im.2026.03.017
  • Receive Date：2025-06-08
  • Online Date：2026-09-10
  • Published：2026-03-20
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History
  • Received：2025-06-08
  • Revised：2025-07-14
Affiliations
    1Baihetan Hydropower Plant, China Yangtze Power Co., Ltd., Liangshan 615000, China
    2School of Electrical Engineering, Chongqing University, Chongqing 400044, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2026.03.017
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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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