十二醇-癸酸-纳米粒子复合相变材料传热性能

被引：32

作者：

黄艳

章学来

机构：

[1] 上海海事大学商船学院

来源：

化工学报 | 2016年 / 67卷 / 06期

关键词：

复合材料; 纳米粒子; 有机化合物; 热导率; 热物性;

D O I：

暂无

中图分类号：

TB33 [复合材料]; TK124 [传热学];

学科分类号：

080505 [复合材料]; 080707 [能源环境工程];

摘要：

针对有机相变材料热导率低的共性,以质量比为58.47:41.53的脂肪烃类低共熔有机物十二醇（DA）-癸酸（CA）为基液,添加纳米粒子MWNT、Cu、Al2O3及分散剂SDBS制备出纳米复合相变材料,从纳米粒子种类、添加浓度及超声时间方面研究其对复合有机相变材料热物性的影响。实验发现MWNT、Cu、Al2O3的添加都可以不同程度上提高DA-CA的热导率。当超声时间为50 min、纳米粒子浓度均为0.1 g·L-1时3种纳米复合材料的热导率大小依次是:MWNT>Al2O3>Cu。最优例:超声分散时间90 min,DA-CA+MWNT(0.1 g·L-1)+SDBS(0.2 g·L-1)的热导率最大,为0.3602 W·m-1·K-1,相较DA-CA提高了20.5%,在不影响基液热物性的基础上具有良好的热稳定性。

引用

页码：2271 / 2276

页数：6

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化工学报, 2015, 66 (03) :1208-1214

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