ABSTRACT In order to find a low temperature phase change material with a temperature range of 2–8°C, decyl alcohol (DA) and myristyl alcohol (MA) binary eutectic mixture was prepared based on theoretical calculation, with a mass ratio of DA: MA=87:13. DA-CA/EG with an optimal mass ratio of DA-MA: EG=14:1 was obtained after vacuum adsorption. Scanning electron microscope and Fourier transformation infrared spectroscopy results show that DA-MA was uniformly distributed in the porous network structure of EG due to physical action. Phase change temperature and latent heat of DA-MA/EG were measured at 3.55°C and 172.3 J·g−1, and the thermal conductivity was 0.942 W·(m·K)−1, which was 3.4 times higher than DA-MA. After 500 high and low temperature cycles, DA-MA/EG did not change much and still maintained good stability. Overall, the prepared DA-MA/EG composite PCM had great application prospects in cold chain logistics.

中文翻译：

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癸基-肉豆蔻醇/膨胀石墨低温复合相变材料的制备及性能

摘要 为了寻找温度范围为 2-8°C 的低温相变材料，基于理论计算制备了癸醇 (DA) 和肉豆蔻醇 (MA) 二元共晶混合物，DA 的质量比为： MA=87:13。真空吸附后得到最佳质量比为 DA-MA:EG=14:1 的 DA-CA/EG。扫描电子显微镜和傅里叶变换红外光谱结果表明，由于物理作用，DA-MA均匀分布在EG的多孔网络结构中。DA-MA/EG的相变温度和潜热在3.55℃和172.3 J·g-1下测得，热导率为0.942 W·(m·K)-1，是DA-的3.4倍嘛。DA-MA/EG经过500次高低温循环后变化不大，仍保持良好的稳定性。全面的，