用于电机散热的定形复合相变材料研究

doi:10.11896/cldb.21060037

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Abstract Anovel composite phase change material (PCM) with various ratio of paraffin/halloysite was prepared by solution intercalated reaction, in which paraffin acted as a PCM, halloysite as a container and absolute alcohol as solvent. Scanning electron microscopy(SEM) was used to observe the surface morphology of the materials. The shape stability during phase change process of this composite was tested. Thermogravimetry analyzer(TGA) and differential scanning calorimetry(DSC) were used to measure the thermal stability, phase-change temperature and phase-transition enthalpy. After determining the optimum ratio of paraffin to halloysite, a small amount of tetrapod ZnO whiskers (T-ZnOw) were added to improve heat conduction performance, and the thermal conductivity was tested. The composite phase change material and drying insulating paint were mixed, heated and poured onto the motor stator windings. After the motor was connected to the power supply, the temperature was recorded with an infrared thermometer and temperature sensitive resistance. The results show that when the mass fraction of paraffin is 50%, the paraffin can be effectively encapsulated by halloysite, thus guaranteeing excellent shape-stabilized phase change feature. The addition of T-ZnOw can effectively improve the heat conduction performance. When the material is poured into the stator winding of the motor, the internal temperature rise can be effectively reduced. The composite materials have an important application value to decrease the internal temperature of the short-time high-power density motor, and to improve the power density of the motor.

Key words： paraffin halloysite tetrapod ZnO whiskers phase change material solution intercalated reaction

Published: 10 October 2022 Online: 2022-10-12

CLC number:

TM304

Fund:National Natural Science Foundation of China(51171061) and the Key Project of Department of Education of Hubei Province (D20201407)

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	Articles by authors
	CHEN Xin
	LIU Lingyun
	TAO Maguanyu
	WANG Xiaoguang
	LIU Jianjun

Cite this article:

CHEN Xin,LIU Lingyun,TAO Maguanyu, et al. Study of Composite Phase Change Materials for Heat Dissipation of Motor[J]. Materials Reports, 2022, 36(19): 21060037-7.

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http://www.mater-rep.com/EN/10.11896/cldb.21060037 OR http://www.mater-rep.com/EN/Y2022/V36/I19/21060037

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