论文部分内容阅读
本文分析并研究了影响低温下热导率测量的各种特有因素.研制了一套用于液氢温度的平板热导仪.通过大量实验提出了新的试样组装方法和实验方法,较好地解决了J.F.Haskins文中留待解决的各种问题.最后给出了聚氨酯泡沫塑料20～280K范围内的热导率测定结果.
In this paper, we analyzed and studied various peculiar factors that affect the measurement of thermal conductivity at low temperature, and developed a set of flat-plate thermal conductivity meter for liquid hydrogen temperature.Through a large number of experiments, we put forward a new sample assembly method and experimental method, Solves the various problems to be solved in the article by JFHaskins, and finally gives the measurement results of the thermal conductivity of the polyurethane foam in the range of 20-280K.