癸酸-肉豆蔻酸/硅藻土定形相变储能材料制备及性能研究  

Study on preparation and properties of capric-myristic acid/diatomite form-stable phase change energy storage materials

作　　者：付路军[1,2] 董发勤[2] 何平[1] 杨玉山 

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010 [2]西南科技大学固体废物处理与资源化教育部重点实验室,四川绵阳621010 [3]四南科技大学国防科技学院,四川绵阳621010

出　　处：《功能材料》2013年第10期1465-1468,共4页Journal of Functional Materials

基　　金：四川省科技支撑计划资金资助项目(2010GZ0300);贵州省科技攻关资金资助项目(2011-3084)

摘　　要：以癸酸(CA)与肉豆蔻酸(MA)复合制备的CA-MA二元低共熔脂肪酸为储能基元材料,硅藻土为储能载体,基于真空吸附法制备了CA-MA/硅藻土定形相变储能材料。采用FT-IR、SEM、DSC、TG对定形相变材料的结构、形貌和热性能等进行了分析。结果表明,CA-MA二元低共熔脂肪酸被吸附到硅藻土的孔道中,二者之间为物理结合。质量分数为45%CA-MA的定形相变材料,CA-MA在反复循环相变中未发生泄漏,其熔化、凝固相变温度分别为22.75、14.52℃,相变焓分别为67.03、66.85J/g,相变温度适中,相变焓高,热稳定性好,适用于建筑领域。Capric aeid-myristic acid eutectic mixture/diatomite form-stable phase change energy （FSPCM） storage materials were prepared by using vacuum impregnation method. Capric acid was mixed with myristic acid to prepare binary fatty acid eutectic, which was selected as energy storage element material and diatomite was selected as supporting material. The structure, microstructure, thermal properties and thermal stability of FSPCM were characterized by infrared spectroscope, scanning electronic microscope, differential scanning calo- rimeter and thermogravimetric analysis apparatus, respectively. It was shown that the CA-MA was well ad- sorbed into the porous of diatomite, and they were physical interaction in nature between CA-MA and diatom- ite. The maximum absorption of CA-MA in the FSPCM was determined as 45wt~~ without melted PCM seep- age from the FSPCM when FSPCM change from solid to liquid state. The melting temperature and latent heat of the FSPCM is 22.75℃ and 67.03J/g, respectively. The freezing temperature and latent heat of the FSPCM is 14. 52℃ and 66.85J/g, respectively, and FSPCM have a good thermal stability. So the FSPCM was applied to building field.

关 键 词：癸酸 肉豆蔻酸 硅藻土 真空吸附法 定形相变材料 储能 

分 类 号：TB34[一般工业技术—材料科学与工程]