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Effect of boron nitride surface modification groups on thermal conductivity of boron nitride/polyimide composites
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Zezhao BAI, Liuqing YANG, Yang FENG, Chunmeng XU
Insulating Materials | 2023, 56(2) : 63 - 67
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Insulating Materials | 2023, 56(2): 63-67
• Polyimide Film Special Issue •
Effect of boron nitride surface modification groups on thermal conductivity of boron nitride/polyimide composites
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Zezhao BAI, Liuqing YANG, Yang FENG, Chunmeng XU
Affiliations
  • State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China
Published: 2023-02-20 doi: 10.16790/j.cnki.1009-9239.im.2023.02.009
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Modified boron nitride (BN)/polyimide (PI) composites were prepared by in-situ polymerization using surface modified BN with terminal group of amino, carboxyl, and hydroxyl and unmodified BN nanosheets as fillers. The effects of BN modified by amino (BN-NH2), carboxyl (BN-COOH), and hydroxyl (BN-OH) and BN on the thermal conductivity of the composites at different temperatures were investigated. The results show that thermal diffusivity of the composite increases with the increase of the mass fraction of BN-NH2. With the increasing of BN-COOH and BN-OH, the thermal diffusivity of the composites increases at first and then decreases, reaches to the peak when the mass fraction of fillers is 2%. At 200 ℃, the thermal diffusivity of BN-NH2/PI reaches to the maximum when the mass fraction of fillers is 5%, while that of BN-COOH/PI and BN-OH/PI reaches to the maximum at when the mass fraction of fillers is 2%, and BN-COOH/PI shows the highest thermal diffusivity. Therefore, surface modification by amino is beneficial for BN/PI composites to obtain a higher thermal conductivity at high fillers content, while carboxyl modification is the best choice to obtain the highest thermal conductivity.

boron nitride  /  polyimide  /  thermal conductivity  /  surface modification
Zezhao BAI, Liuqing YANG, Yang FENG, Chunmeng XU. Effect of boron nitride surface modification groups on thermal conductivity of boron nitride/polyimide composites[J]. Insulating Materials, 2023 , 56 (2) : 63 -67 . DOI: 10.16790/j.cnki.1009-9239.im.2023.02.009
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2023.02.009
  • Receive Date：2022-08-26
  • Online Date：2025-11-21
  • Published：2023-02-20
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  • Received：2022-08-26
  • Revised：2022-10-15
Affiliations
    State 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.2023.02.009
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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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