【摘要】：為了獲得適合在建筑領(lǐng)域應(yīng)用的相變材料和相變溫度,以月桂酸(LA)和十四醇(TD)為原料,采用熔融共混法制備一系列二元酸-醇相變材料。采用步冷曲線法測定不同組分二元相變材料的結(jié)晶溫度,通過繪制的相圖確定二元體系低共晶點,LA-TD二元體系在23.1℃達到共晶點;采用紅外光譜(FTIR)表征復(fù)合相變材料的結(jié)構(gòu),表明復(fù)合相變材料中LA與TD通過分子間作用力結(jié)合在一起;采用DSC差示掃描量熱法測量LA-TD混合物的相變溫度及相變潛熱,低共晶物的相變起始溫度為24.46℃,相變潛熱達到150.45 J/g,經(jīng)300次0~60℃冷熱循環(huán)后熱穩(wěn)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，

本文編號：2147221