一种新型柔性相变材料薄膜的制备及性能  

Preparation and Properties of a New Type of Pliable Phase Change Material Composite Film

作　　者：邱勇[1] 周伯昭[1] 何颖波[2] 张凯[2] 

机构地区：[1]国防科学技术大学航天与材料工程学院,湖南长沙410073 [2]中国工程物理研究院总体工程研究所,四川绵阳621900

出　　处：《含能材料》2008年第4期387-390,共4页Chinese Journal of Energetic Materials

基　　金：中国工程物理研究院科学技术预先研究基金(20050868)

摘　　要：利用复合乳化工艺配制出了性能稳定的十八烷/天然胶乳液,并采用浸渍成型工艺制备出了复杂形状的相变材料柔性薄膜,实现了室温相变材料的有效定型。实验研究表明,该工艺制备的相变薄膜材料具有良好的力学(扯断伸长率1135%)、热学(相变潜热237.1 kJ·kg-1)及密封性能(透气系数为3.71×10-17m2·Pa-1·s-1),相变温度为27.4℃,在低温环境中降温缓慢,可以用于特殊的储能和控温目的。Pliable composite films were prepared based on phase change materials （PCM） through the following steps. Firstly, octadecane/nature rubber latex with high stability was prepared with composite emulsion technology. Secondly, phase change pliable composite films with complex shape were prepared through dipping process. Finally, major properties of the composite films were measured,including mechanical property, thermal property and sealing property. Results show that the composite PCM film is a favorable energy storing media with latent heat of 237.1 kJ · kg ^-1. It also has excellant mechanical and air-proof properties with elongation factor at divulsion of 1135 % and air transmission coefficient of 3.71 × 10 ^-17 m^2 · Pa^-1 · s^-1 respectively. Therefore, it can be used for energy storing purpose of geometrically complicated structure.

关 键 词：有机高分子材料 相变材料 柔性薄膜 制备技术 性能 

分 类 号：TB383.2[一般工业技术—材料科学与工程]