水基纳米散热介质热物性试验研究及分析  

Experimental Study and Analysis of Thermal Physical Properties of Water-Based Nano Heat Dissipation Medium

作　　者：朱家军 蒋佳骏 ZHU Jiajun;JIANG Jiajun(Yunnan Zhongxuan Liquid Metal Technology Co.,Ltd.,Xuanwei,Yunnan 655400,China;Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming,Yunnan 650500,China)

机构地区：[1]云南中宣液态金属科技有限公司,云南宣威655400 [2]昆明理工大学机电工程学院,云南昆明650500

出　　处：《云南冶金》2024年第5期163-169,共7页Yunnan Metallurgy

基　　金：云南省乡村振兴科技专项(202204BK090066)。

摘　　要：针对传统传热介质因热导率低导致散热性能差的问题,采用两步法制备水基纳米散热介质,通过试验研究了沉降稳定性与热物性,结果表明:当CMC (0.8%)和SiC (1.0%)质量分数配比达到4∶5,且在机械搅拌超声时间为60 min、油浴温度为55℃等的制备工艺条件下,样品稳定性最佳;2.0%的样品在25~65℃范围样品的粘度小于80 MPa·s,满足冶金装备冷却系统对散热介质流动性的要求,相较于纯水,水基纳米散热介质的热导率更好。The traditional heat transfer medium has bad heat dissipation due to low heat conductivity,the two-step method was used for the preparation of a water-based nano heat dissipation medium,its sedimentation stabilities and thermal physical properties were studied through experimental study,results show that:when mass fraction ratio of CMC(0.8%)and SiC(1.0%)is 4∶5,the mechanical agitation ultrasound time is 60 min,the oil bath temperature is 55℃,with the process as mentioned above conditions,samples have the best stability;there are 2.0%samples?蒺viscosity is less than 80 MPa·s when the temperature is 25~65℃,it can meet the requirements of the fluidity of the heat dissipation medium for cooling systems of metallurgical equipment;comparing to the pure water,water-based nano heat dissipation medium has better heat conductivity.

关 键 词：散热介质 冷却系统 纳米流体 稳定性 热物性 

分 类 号：TB34[一般工业技术—材料科学与工程]