一、引言在测量热导率的实验中,最普遍采用的方法是稳态法,即在保持被测样品各点温度不随时间变化的情况下测量热流,然后求出热导率。这种方法实验条件要求严格,不易测准。本文介绍一种热导率测量的新方法,即动态法:样品上各点的温度可以随时间发生规律性变化,再利用这种规律来求样品的 I. INTRODUCTION In the experiment of measuring thermal conductivity, the most commonly used method is the steady-state method, which is to measure the heat flow while keeping the temperature of each point of the sample under test unchanged over time, and then to obtain the thermal conductivity. This method requires rigorous experimental conditions, not easy to test. This article describes a new method of measuring thermal conductivity, namely, dynamic method: the temperature at each point on the sample can change regularly with time, and then use this law to find the sample