标准摘要
[中文适用范围]: ISO 22007 的这一部分规定了实现热导率测量的调制温度方法。 输入温度偏差小于1K,采用双锁相方法放大微小的温度调制。 在热厚条件下,kd >> 1 [k = (ω/2α)1/2,ω:温度波角频率,α:热扩散率,d:试件厚度]。 在这种情况下,背衬材料不会影响传感器上的相移结果,温度波呈指数衰减。 另一方面,如果 kd [外文原描述]: ISO 22007-6:2014 specifies a modulated temperature method realizing the measurement of thermal conductivity. An input of temperature deviation is less than 1 K, and a double lock-in method is applied to amplify the small temperature modulation. ISO 22007-6:2014 specifies the method to determine the thermal conductivity in the range from 0,026 W/mK to 0,6 W/mK.
英文名称Plastics — Determination of thermal conductivity and thermal diffusivity — Part 6: Comparative method for low thermal conductivities using a temperature-modulation technique