ISO 22007-4:2008 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 22007-4:2008

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: Laser flash method

发布日期：2008-12

标准范围

ISO 22007-4:20 08规定了一种通过激光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。该方法可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 × 10-7m2s-1<α<1 × 10-4m2s-1范围内的材料。测量可以在-100°C至+400°C的温度范围内的气体和真空环境中进行。对于不均匀样品，测量值可能取决于样品厚度。

ISO 22007-4:2008 specifies a method for the determination of the thermal diffusivity of a thin solid disc of plastics in the thickness direction by the laser 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 can be used for 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 x 10^-7 m²s^-1 < α < 1 x 10^-4 m²s^-1. Measurements can be carried out in gaseous and vacuum environments over a temperature range from -100 °C to +400 °C.For inhomogeneous specimens, the measured values may be specimen thickness dependent.

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