The effect of nanomaterials on the thermal behavior of Decanoic-Caprylic Acid (DA-CA) binary eutectic mixture was investigated experimentally. Different high thermal conductivity nanomaterials, including nano-sized iron oxide (Fe₂O₃), nano-sized copper (Cu), hydroxylated multi-walled carbon nanotubes (MWCNT-OH), and dispersant Span-60, were added into DA-CA, respectively. The nanomaterial-enhanced phase change materials (NePCMs) were prepared by the ultrasonic oscillation method. The effects of nanomaterials on the cool storage performance of DA-CA were studied from the types and concentrations of nanomaterials. The experimental results showed that as the nanomaterials mass concentration increased, the thermal conductivity increased first and then gradually stabilized. The thermal conductivity trend for the composites added to the nanomaterials was: 0.40 g·L⁻¹ Fe₂O₃ > 0.10 g·L⁻¹ MWCNT-OH > 0.30 g·L⁻¹ Cu. DA-CA + 0.40 g·L⁻¹ Fe₂O₃ exhibited the best thermal properties, and its thermal conductivity increased by 36.8%, and the thermal storage time decreased by 38%. After 500 times thermal stability test, the NePCMs still maintained the appropriate phase change temperature and high latent heat. Therefore, this material has potential as part of the cold chain logistics for fruit and vegetable preservation.

实验研究了纳米材料对癸辛酸（DA-CA）二元共晶混合物热行为的影响。不同的高导热率纳米材料，包括纳米级氧化铁（Fe ₂ O ₃），分别将纳米级铜（Cu），羟基化多壁碳纳米管（MWCNT-OH）和分散剂Span-60添加到DA-CA中。通过超声振荡法制备了纳米材料增强相变材料（NePCM）。从纳米材料的种类和浓度研究了纳米材料对DA-CA储藏性能的影响。实验结果表明，随着纳米材料质量浓度的增加，热导率先增加，然后逐渐稳定。添加到纳米材料中的复合材料的热导率趋势为：0.40 g·L ^-1 Fe ₂ O ₃  > 0.10 g·L ^-1 MWCNT-OH> 0.30 g·L ^-1 Cu。DA-CA + 0.40 g·L ^-1Fe ₂ O ₃具有最佳的热性能，其热导率提高了36.8％，储热时间减少了38％。经过500次热稳定性测试后，NePCM仍保持适当的相变温度和高潜热。因此，这种材料作为水果和蔬菜保鲜冷链物流的一部分具有潜力。