碳纳米流体相变特性实验研究  

Experimental studies on phase change characteritics of carbon nanofluids

作　　者：王姣[1,2] 杨波[1,2] 刘军[1,2] 蔡光明[1,2] 

机构地区：[1]中国工程物理研究院高能激光科学与技术重点实验室,四川绵阳621900 [2]中国工程物理研究院应用电子学研究所,四川绵阳621900

出　　处：《强激光与粒子束》2015年第7期193-196,共4页High Power Laser and Particle Beams

基　　金：中国工程物理研究院高能激光科学与技术重点实验室基金项目(HEL2014-02-02)

摘　　要：通过"两步法"制备分散均匀、稳定的单壁碳纳米管/水、多壁碳纳米管/水碳纳米流体,通过差示扫描量热法(DSC)测试分析了碳纳米流体的凝固、熔化相变过程,实验结果表明在凝固相变过程中随着碳纳米管质量分数的增加,碳纳米流体的起始凝固温度及凝固温度逐渐升高,单壁碳纳米流体的凝固温度显著提高,在熔化相变过程中,碳纳米流体的质量分数对于纳米流体的熔点无明显影响,但对于碳纳米流体的潜热影响较大,碳纳米流体的潜热随着质量分数的增加而明显减小。By two step method, the carbon water nanofluids were made from the carbon nanotubes and a certain proportion al dispersant in deionized water. The influences of mass fraction, diameter of carbon nanotubes on the solidification and melting properties of nanofluids were studied by differential scanning calorimetry（DSC）. The experiment results indicated that the onset temperature of solidification and solidification temperature increased with increasing mass fraction of carbon nanotubes, and corn pared with the same mass fraction of multi wall carbon nanofluids, the solidification temperature of single wall carbon nanofluids increased more. The fusion temperature wasn＇t affected by mass fraction of carbon nanotubes, the latent heat decreased with in creasing mass fraction of carbon nanotubes.

关 键 词：碳纳米管 纳米流体 差示扫描量热法 凝固 熔化 

分 类 号：TN248.4[电子电信—物理电子学]