A novel composite phase change material, myristic acid (MA)/nano-titanium dioxide (nano-TiO₂)/carbon additives, was synthesized via a melt blending method, in which MA serves as phase change material, nano-TiO₂ acts as support material, and carbon additives are used as thermally conductive enhancer. A series of leakage tests have shown that MA/nano-TiO₂ can maintain shape stability during the phase transition when the content of MA in MA/nano-TiO₂ does not exceed 50 %. The FT-IR and XRD results demonstrated that there is no chemical reaction among the various components of the MA/nano-TiO₂/carbon additive. When the content of MA is 50 %, the melting temperature of MA/nano-TiO₂/carbon additives is about 54 °C and the melting enthalpy is about 80 J·g⁻¹. When the content of all three carbon additives, multiwall carbon nanotubes, graphene, and expanded graphite, is 2.5 %, the corresponding thermal conductivity of MA/nano-TiO₂/carbon additives is 0.532 W/(m·K), 1.128 W/(m·K), and 1.382 W/(m·K), respectively. The thermal conductivity of these three types of MA/nano-TiO₂/additives is 1.23, 2.62, and 3.21 times that of MA/TiO₂, respectively. Moreover, the decomposition temperature of these three types MA/nano-TiO₂/carbon additives composites is around 245 °C. Therefore, the working ambient temperature of MA/nano-TiO₂/additive composites should be lower than 245 °C.

采用熔融共混法合成了一种新型复合相变材料——肉豆蔻酸（MA）/纳米二氧化钛（nano-TiO ₂）/碳添加剂，其中MA为相变材料，纳米TiO ₂为添加剂。支撑材料和碳添加剂用作导热增强剂。一系列泄漏测试表明，当MA/纳米TiO ₂中MA的含量不超过50％时，MA/纳米TiO ₂在相变过程中能够保持形状稳定性。_{FT-IR和XRD结果表明MA/纳米TiO 2} /碳添加剂的各组分之间没有发生化学反应。当MA含量为50%时，MA/纳米TiO ₂ /碳添加剂的熔融温度约为54℃，熔融焓约为80J·g ^-1。当多壁碳纳米管、石墨烯和膨胀石墨三种碳添加剂的含量均为2.5 %时，MA/纳米TiO ₂ /碳添加剂相应的导热系数为0.532 W/(m·K)、1.128 W/分别为（m·K）和1.382 W/（m·K）。这三种MA/纳米TiO _{2 /添加剂的导热系数分别是MA/TiO 2}的1.23、2.62和3.21倍。此外，这三种MA/纳米TiO ₂ /碳添加剂复合材料的分解温度约为245℃。因此，MA/纳米TiO ₂ /添加剂复合材料的工作环境温度应低于245℃。