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Study on Thermal Conductivity of BNNs/Mg(OH)2/PE Composites
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Chu WANG1, 2, Jinghao WANG1, Zhongjie LIAN1, Changshun WU2, Weigang LI2, Zhaowen YANG2, Kai WU1
Insulating Materials | 2022, 55(7) : 34 - 40
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Insulating Materials | 2022, 55(7): 34-40
• Material Research •
Study on Thermal Conductivity of BNNs/Mg(OH)2/PE Composites
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Chu WANG1, 2, Jinghao WANG1, Zhongjie LIAN1, Changshun WU2, Weigang LI2, Zhaowen YANG2, Kai WU1
Affiliations
  • 1State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China
  • 2Xi'an Jiaotong-Zetastone Joint Innovation Research Center, Xi'an 710049, China
Published: 2022-07-20 doi: 10.16790/j.cnki.1009-9239.im.2022.07.006
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In this paper, low density polyethylene (LDPE) was used as the matrix material, boron nitride nanosheets (BNNs) was selected as the first doping filler, magnesium hydroxide (Mg(OH)2) was selected as the second filler, and an insulating composites with multi filler structure was prepared by melt blending method. The effects of two filler contents on the thermal conductivity of the composites with different thickness were studied under normal temperature and pressure. The results show that the Mg(OH)2 can change the orientation and connection of BNNs in matrix, so as to affect the thermal conductivity of composites. High amount of Mg(OH)2 can enhance the axial thermal conductivity of the composites with three thicknesses. The addition of Mg(OH)2 is not conducive to improve the radial thermal conductivity of the composite with thin thickness. Appropriate amount of Mg(OH)2 can enhance the radial thermal conductivity of the composite with thicker thickness. When the mass fraction of BNNs is 20%, the mass fraction of Mg(OH)2 is 40%, the thermal conductivity of the composite can reach 12 times bigger than that of pure LDPE.

thermal conductive and insulating composites  /  BNNs  /  Mg(OH)2  /  thermal conductivity
Chu WANG, Jinghao WANG, Zhongjie LIAN, Changshun WU, Weigang LI, Zhaowen YANG, Kai WU. Study on Thermal Conductivity of BNNs/Mg(OH)2/PE Composites[J]. Insulating Materials, 2022 , 55 (7) : 34 -40 . DOI: 10.16790/j.cnki.1009-9239.im.2022.07.006
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2022.07.006
  • Receive Date：2021-06-21
  • Online Date：2025-12-23
  • Published：2022-07-20
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  • Received：2021-06-21
  • Revised：2021-09-04
Affiliations
    1State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China
    2Xi'an Jiaotong-Zetastone Joint Innovation Research Center, Xi'an 710049, 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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