ISO 22007-4:2024 塑料 导热率和热扩散率的测定 第4部分：激光闪光法
标准编号：ISO 22007-4:2024
中文名称：塑料 导热率和热扩散率的测定 第4部分：激光闪光法
英文名称：Plastics — Determination of thermal conductivity and thermal diffusivity — Part 4: Light flash method
发布日期：2024-01
标准范围
本文件规定了一种通过闪光法测定薄固体塑料盘在厚度方向上的热扩散率的方法。该方法基于由正面上的短能量脉冲产生的薄圆盘样品背面的温升的测量。该方法适用于均质固体塑料以及具有各向同性或正交各向异性结构的复合材料。通常，它涵盖热扩散率α在1？×？10？7？m2？s？1？<？什么？<？1？×？10？4？m2？s？1.测量可以在气体和真空环境中进行，温度范围为？100？°C到+400？°C。笔记？对于不均匀样品，测量值可以取决于样品厚度。
This document specifies a method for the determination of the thermal diffusivity of a thin solid disc of plastics in the thickness direction by the light flash method. This method is based upon the measurement of the temperature rise at the rear face of the thin-disc specimen produced by a short energy pulse on the front face.
The method is applicable to homogeneous solid plastics as well as composites having an isotropic or orthotropic structure. In general, it covers materials having a thermal diffusivity, α, in the range 1 × 10？7 m2？s？1 < α < 1 × 10？4 m2？s？1. Measurements can be carried out in gaseous and vacuum environments over a temperature range from？100 °C to +400 °C.
NOTE For inhomogeneous specimens, the measured values can be specimen thickness dependent.
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