摘要
石蜡作为一种相变材料有相变点单一的缺陷,限制了它的应用范围。石蜡由固相变为液相后发生流动、引起泄漏,一般需要特殊的工艺封装后才能使用。向固体石蜡中添加液体石蜡,采用熔融共混的方法,通过改变不同配比调整石蜡的熔点。利用DSC测试分析这种混合物的热物性,发现混合物的相变点和相变潜热随液体石蜡加入量的增加逐渐下降。采用真空吸附的方法制得了石蜡-膨胀珍珠岩定形相变材料,通过DSC测试发现这种材料保持了石蜡的相变点和相变潜热,将这种材料加入到涂料中涂敷到样板表面检测红外隐身性能。
As a kind of PCM, paraffin has the defect that melting point is single, which limits its application. Paraffin flows and leaks when it becomes liquid phase from solid phase, so it can＇ t be used if it is not packed in some special form. Melting point of a kind of PCM prepared by blending melting solid and liquid paraffin can be modified by changing the proportion of the two parts. Through DSC test, it can be detected that the phase change temperature and the latent heat of the PCM fall with the increasing of liquid paraffin＇ s quantity. In this paper, a kind of shape-stabilized phase change material was prepared by vacuum adsorption using paraffin and expanded perlite. Through DSC analysis, it can be found that this kind of material remains melting point and latent heat of paraffin. Also the property of IR camouflage for this kind of shape-stabilized PCM was tested by adding it in coating and covering the coating on boards.
出处
《兵器材料科学与工程》
CAS
CSCD
2011年第6期30-32,共3页
Ordnance Material Science and Engineering
