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Performance optimization of LLDPE non-crosslinked semiconductive shielding materials via EBA addition
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Xin YU1, Bowen LI2, *, Yazhou FAN1, Ji WU1, Hong ZHANG2, Yinge LI1, Jinghui GAO2
Insulating Materials | 2026, 59(3) : 31 - 39
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Insulating Materials | 2026, 59(3): 31-39
• Special Issue on Low-carbon Environmental Protection Advanced Insulation Materials •
Performance optimization of LLDPE non-crosslinked semiconductive shielding materials via EBA addition
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Xin YU1, Bowen LI2, *, Yazhou FAN1, Ji WU1, Hong ZHANG2, Yinge LI1, Jinghui GAO2
Affiliations
  • 1Guangdong Key Laboratory of Electric Power Equipment Reliability, Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Guangzhou 510080, China
  • 2State Key Laboratory of Electrical Insulation and Power Equipment, Xi′an Jiaotong University, Xi′an 710049, China
Published: 2026-03-20 doi: 10.16790/j.cnki.1009-9239.im.2026.03.004
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This study systematically investigated the effect of the type and content of ethylene-butyl acrylate (EBA) copolymer on the properties of linear low-density polyethylene (LLDPE)-based non-crosslinked semiconductive shielding materials. A series of shielding material samples were prepared, and their physicochemical properties, volume resistivity, and mechanical performance were characterized. The results show that the incorporation of EBA significantly improves the processability and electrical conductivity of the shielding material. When the mass fraction of EBA in the matrix resin increases from 0 to 15%, the melt flow index of the shielding materila increases from 0.95 g/10 min to 1.15 g/10 min, while the volume resistivity decreases from 11.68 Ω·cm to 8.69 Ω·cm. However, the addition of EBA also leads to reduction in crystallinity and mechanical properties of the shielding material. Among the samples modified by different types of EBA, the 35BA40-modified sample exhibits optimal electrical conductivity and processing flowability, whereas the E2770-modified sample shows superior mechanical performance.

non-crosslinked polyethylene-based shielding material  /  ethylene-butyl acrylate copolymer (EBA)  /  melt flow index  /  volume resistivity  /  mechanical properties
Xin YU, Bowen LI, Yazhou FAN, Ji WU, Hong ZHANG, Yinge LI, Jinghui GAO. Performance optimization of LLDPE non-crosslinked semiconductive shielding materials via EBA addition[J]. Insulating Materials, 2026 , 59 (3) : 31 -39 . DOI: 10.16790/j.cnki.1009-9239.im.2026.03.004
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doi: 10.16790/j.cnki.1009-9239.im.2026.03.004
  • Receive Date：2025-09-18
  • Online Date：2026-09-10
  • Published：2026-03-20
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  • Received：2025-09-18
  • Revised：2025-10-20
Affiliations
    1Guangdong Key Laboratory of Electric Power Equipment Reliability, Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Guangzhou 510080, China
    2State Key Laboratory of Electrical Insulation and Power Equipment, Xi′an Jiaotong University, Xi′an 710049, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2026.03.004
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表12种不同金属材料的力学参数
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Family		 属数
Number of
genus		 种数
Number of
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Percentage of
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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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