月桂酸-十四醇二元复合相变材料的相变特性
发布时间：2018-07-26 20:36
【摘要】：为了获得适合在建筑领域应用的相变材料和相变温度,以月桂酸(LA)和十四醇(TD)为原料,采用熔融共混法制备一系列二元酸-醇相变材料。采用步冷曲线法测定不同组分二元相变材料的结晶温度,通过绘制的相图确定二元体系低共晶点,LA-TD二元体系在23.1℃达到共晶点;采用红外光谱(FTIR)表征复合相变材料的结构,表明复合相变材料中LA与TD通过分子间作用力结合在一起;采用DSC差示扫描量热法测量LA-TD混合物的相变温度及相变潜热,低共晶物的相变起始温度为24.46℃,相变潜热达到150.45 J/g,经300次0~60℃冷热循环后热稳定性良好。
[Abstract]:In order to obtain phase change material and phase transition temperature suitable for application in building field, a series of dibasic acid-alcohol phase change materials were prepared by melt blending method using lauric acid (LA) and tetradecanol (TD) as raw materials. The crystallization temperature of binary phase change materials with different components was measured by step cooling curve method, and the low eutectic point of binary system was determined by phase diagram. The eutectic point of binary system was determined at 23.1 鈩，
本文编号：2147221
[Abstract]:In order to obtain phase change material and phase transition temperature suitable for application in building field, a series of dibasic acid-alcohol phase change materials were prepared by melt blending method using lauric acid (LA) and tetradecanol (TD) as raw materials. The crystallization temperature of binary phase change materials with different components was measured by step cooling curve method, and the low eutectic point of binary system was determined by phase diagram. The eutectic point of binary system was determined at 23.1 鈩，
本文编号：2147221
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