对网状碳纤维面板蜂窝夹层结构T ,L ,W三个方向的低温热导率进行了测试研究。得到了网状碳纤维面板蜂窝夹层结构低温热导率的性能与温度变化曲线。在试验的基础上 ,讨论分析了网状碳纤维面板蜂窝夹层结构低温热导率的影响机理。通过试验和比对 ,从中找出了具有普遍性的规律 ,建立了一般蜂窝夹层结构低温热导率的变化规律模型 ,为推算蜂窝夹层结构低温热导率数据提供了参考依据 The low-temperature thermal conductivity of honeycomb sandwich structure T, L, W in mesh carbon fiber was tested. The performance and temperature curve of the low temperature thermal conductivity of honeycomb sandwich structure with carbon fiber mesh were obtained. On the basis of the experiment, the mechanism of the low temperature thermal conductivity of the honeycomb sandwich structure with reticulated carbon fiber panel is discussed. Through the experiment and comparison, the universal law was found and the variation rule of low temperature thermal conductivity of honeycomb sandwich structure was established, which provided a reference for calculating the low temperature thermal conductivity data of honeycomb sandwich structure