| 80#石蜡/膨胀石墨定形复合相变材料的特性表征与分析 |
| |
| 引用本文： | 尹少武,李鸿坤,王立,童莉葛,刘传平.80#石蜡/膨胀石墨定形复合相变材料的特性表征与分析[J].化工进展,2019,38(3):1494-1500. |
| |
| 作者姓名： | 尹少武 李鸿坤 王立 童莉葛 刘传平 |
| |
| 作者单位： | 北京科技大学能源与环境工程学院, 北京 100083;北京科技大学冶金工业节能减排北京市重点实验室, 北京 100083;北京科技大学能源与环境工程学院,北京,100083 |
| |
| 基金项目： | 国家重点研发计划(2016YFB0601100);国家自然科学基金(51106008) |
| |
| 摘 要： | 以80#石蜡为相变材料，利用不同粒径膨胀石墨的多孔隙结构，以多层吸附、模压法压制方式制备了80#石蜡/膨胀石墨定形复合相变材料。通过循环融冻实验分析了80#石蜡的热稳定性和循环稳定性，滴定滤纸渗漏实验确定了不同组分复合相变材料的渗漏率。采用差示扫描量热仪(DSC)、扫描电子显微镜（SEM）、Hot Disk热常数分析仪等仪器对所制备复合相变材料的相变潜热、多孔基吸附结构、热导率、渗漏率等特性进行了分析。结果表明：当膨胀石墨的添加质量分数达到整体组分的8%时，复合定形相变材料的相变温度为80.86℃（吸热）和76.08℃（放热），相变潜热为130.12kJ/kg，且渗漏率小于0.3%。制备的复合定形相变材料具有形状稳定、渗漏率低、蓄热密度高的特点，且具有较长的使用寿命。
|
| 关 键 词： | 石蜡 膨胀石墨 相变 吸附 载体 |
| 收稿时间： | 2018-03-26 |
Characteristics and analysis of 80# paraffin/expanded graphite composite phase change material |
| |
| Shaowu YIN,Hongkun LI,Li WANG,Lige TONG,Chuanping LIU.Characteristics and analysis of 80# paraffin/expanded graphite composite phase change material[J].Chemical Industry and Engineering Progress,2019,38(3):1494-1500. |
| |
| Authors: | Shaowu YIN Hongkun LI Li WANG Lige TONG Chuanping LIU |
| |
| Affiliation: | 1. School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
2. Key Laboratory of Energy Saving and Emission Reduction, University of Science and Technology Beijing, Beijing 100083, China |
| |
| Abstract: | Taking 80# paraffin as the phase change material and expanded graphite with network structure as the framework, we have prepared the 80# paraffin/expanded graphite composite phase change material by using the multi-layer adsorption and pressing die method. The thermal stability and cycle stability of 80# paraffin were analyzed by cyclic thawing experiment. The leakage rate of the composite phase change material with different components was determined through the titration filter paper leakage test. The latent heat, adsorption structure, thermal conductivity and leakage rate of the composite phase change materials were analyzed by using differential scanning calorimeter(DSC), scanning electron microscope(SEM), Hot Disk thermal constant analyzer and other instruments. The results show that when the amount of the added expanded graphite reaches 8% of the total component, the transformation temperature of the composite phase change material is 80.86℃ (endothermic) and 76.08℃ (exothermic), the latent heat is 130.12kJ/kg, and the leakage rate is less than 0.3%. The composite phase change material has the features of stable shape, low leakage rate, high heat storage density, and long life. |
| |
| Keywords: | paraffin expanded graphite phase change adsorption support |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《化工进展》浏览原始摘要信息 |
|
点击此处可从《化工进展》下载全文 |
|
