为了研究某些吸附材料在4.2K条件下的吸附分离特性,研制了一套深低温吸附材料分析表征系统;该系统采用4.2K G-M双级制冷机作为冷源,利用高纯氦气作为蓄冷导热介质,实现了较高的控温精度和较宽的温度使用范围;同时,采用了样品腔悬吊在氦气导热腔中的结构形式,极大的方便了吸附材料的拆装与更换。 In order to study the adsorption and separation properties of some adsorbents under 4.2K conditions, a set of cryogenic adsorption material analysis and characterization system was developed. The system uses a 4.2K GM two-stage refrigerator as the cold source and high purity helium as the thermal storage Medium, to achieve a higher temperature control accuracy and wide temperature range; the same time, the use of the sample chamber suspended helium heat conduction chamber in the form of structure, which greatly facilitates the removal and replacement of adsorbent material.