Study of Composite Phase Change Materials for Heat Dissipation of Motor
CHEN Xin1, LIU Lingyun1, TAO Maguanyu1, WANG Xiaoguang1, LIU Jianjun2
1 Hubei Collaborative Innovation Center for High Efficiency Utilization of Solar Energy, Hubei University of Technology, Wuhan 430068, China 2 Xiangyang TTE Electric Co., Ltd., Zaoyang 441200, Hubei, China
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.
陈鑫, 刘凌云, 陶马冠宇, 王晓光, 柳建军. 用于电机散热的定形复合相变材料研究[J]. 材料导报, 2022, 36(19): 21060037-7.
CHEN Xin, LIU Lingyun, TAO Maguanyu, WANG Xiaoguang, LIU Jianjun. Study of Composite Phase Change Materials for Heat Dissipation of Motor. Materials Reports, 2022, 36(19): 21060037-7.
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2022, Vol. 36 
