ISO 13468-1:2019 塑料 透明材料光透射率总量的测定 第1部分： 单束发射仪器

标准编号：ISO 13468-1:2019

中文名称：塑料 透明材料光透射率总量的测定 第1部分： 单束发射仪器

英文名称：Plastics — Determination of the total luminous transmittance of transparent materials — Part 1: Single-beam instrument

发布日期：2019-06

标准范围

本文件包括使用带有指定CIE标准光源和光电探测器的单光束光度计，在光谱可见区域测定平面透明和基本无色塑料的总光透射率。本文件不适用于含有荧光材料的塑料。本文件适用于厚度不超过10 mm的透明模塑材料、薄膜和薄板。注1:总光透射率也可通过ISO 13468-2中的双光束分光光度计测定。然而，本文件提供了一种简单但精确、实用且快速的确定方法。该方法不仅适用于分析目的，也适用于质量控制。注2:基本无色的塑料包括浅色塑料。注3:如果仪器能够容纳厚度超过10 mm的试样，则可以对其进行测量，但结果可能无法与使用厚度小于10 mm的试样获得的结果进行比较。

This document covers the determination of the total luminous transmittance, in the visible region of the spectrum, of planar transparent and substantially colourless plastics, using a single-beam photometer with a specified CIE Standard light source and photodetector. This document cannot be used for plastics which contain fluorescent materials.This document is applicable to transparent moulding materials, films and sheets not exceeding 10 mm in thickness.NOTE 1 Total luminous transmittance can also be determined by a double-beam spectrophotometer as in ISO 13468-2. This document, however, provides a simple but precise, practical and quick determination. This method is suitable for use not only for analytical purposes but also for quality control.NOTE 2 Substantially colourless plastics include those which are faintly tinted.NOTE 3 Specimens more than 10 mm thick can be measured provided the instrument can accommodate them, but the results might not be comparable with those obtained using specimens less than 10 mm thick.

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