Abstract Stearic acid (SA)/1, 10-decanediol (DDL) binary eutectic was prepared via melt blending technique. The thermal performances of SA, DDL, and the SA-DDL binary mixtures were studied by differential scanning calorimetry (DSC). From the phase diagram, binary SA-DDL system showed eutectic behavior and SA percentage at eutectic point is located at 86 wt% in terms of melting point and the fusion enthalpy at 56.5 °C and 247.6 J/g, respectively. The accelerated thermal cycles tests illustrated the variations of the phase transition temperature and fusion enthalpy of the SA-DDL eutectic were in the range of 0.4–0.7 °C and 0.8%–1.5% after experiencing 100 and 500 thermal cycles. At the same time, FT-IR analysis indicated that the SA-DDL eutectic were chemically stable even experiencing 500 repeated thermal cycles. The thermogravimetric analysis (TGA) implied that SA-DDL eutectic was thermally stable below 200 °C. The results suggested that the SA-DDL eutectic was a potential candidate as a novel type phase change material.

中文翻译：

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1, 10-癸二醇-硬脂酸共晶相变材料的制备及热性能

摘要 采用熔融共混技术制备了硬脂酸(SA)/1, 10-癸二醇(DDL)二元低共熔体。通过差示扫描量热法 (DSC) 研究了 SA、DDL 和 SA-DDL 二元混合物的热性能。从相图中，二元 SA-DDL 系统显示出共晶行为，共晶点的 SA 百分比位于 86 wt%，熔点分别为 56.5 °C 和 247.6 J/g。加速热循环试验表明，在经历 100 和 500 次热循环后，SA-DDL 共晶的相变温度和熔化焓的变化范围为 0.4-0.7°C 和 0.8%-1.5%。同时，FT-IR 分析表明，即使经历 500 次重复热循环，SA-DDL 共晶仍具有化学稳定性。热重分析 (TGA) 表明 SA-DDL 共晶在 200 °C 以下是热稳定的。结果表明，SA-DDL 共晶是一种潜在的新型相变材料。