复合除湿剂导热系数及动态除湿性能研究

工程热物理学报 , 2014, 35(10): 2009-2014.

复合除湿剂导热系数及动态除湿性能研究

郑旭 ^1, , 王如竹 ^2, , 王丽伟 ^3, , 葛天舒 ^4,

1.上海交通大学制冷与低温工程研究所动力机械与工程教育部重点实验室,上海200240

2.上海交通大学制冷与低温工程研究所动力机械与工程教育部重点实验室,上海200240

3.上海交通大学制冷与低温工程研究所动力机械与工程教育部重点实验室,上海200240

4.上海交通大学制冷与低温工程研究所动力机械与工程教育部重点实验室,上海200240

基金项目: 国家重点自然科学基金项目(No.51336004) 高等学校博士学科点专项科研基金(No.20110073130010)

关键词：硅胶 , 导热系数 , 硫化石墨 , 动态吸湿性能 , 复合除湿剂

Study on the Thermal Conductivity and Hygroscopic Property of Consolidated Composite Desiccants

Keywords： silica gel , thermal conductivity , expanded natural graphite , kinetics of water adsorption , composite desiccants

为提高硅胶除湿剂的传热性能,并且不影响其吸湿性能,本文选择高热导率的硫化石墨作为传热基质,制作不同密度的硅胶/硫化石墨固化复合除湿剂.通过激光闪光法和动态称重法对样品进行导热系数和动态除湿性能测试.结果表明复合除湿剂导热性能随着固化密度的增大先增加后减小,导热系数最高可达16.2 W.m-1.K-1,约为纯硅胶除湿剂的230多倍.复合除湿剂的吸湿性能随着固化密度的升高而下降,密度为300 kg.m-3复合吸附剂的动态吸湿速率约为纯硅胶的2倍以上.

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复合除湿剂导热系数及动态除湿性能研究

Study on the Thermal Conductivity and Hygroscopic Property of Consolidated Composite Desiccants

参考文献