ISO 13468-2:1999 塑料-透明材料总透光度性能试验方法-第一部分：双射线（双束）仪.

标准编号：ISO 13468-2:1999

中文名称：塑料-透明材料总透光度性能试验方法-第一部分：双射线（双束）仪.

英文名称：Plastics — Determination of the total luminous transmittance of transparent materials — Part 2: Double-beam instrument

发布日期：1999-05

标准范围

ISO 13468的这一部分涵盖了在物体可见区域内总光透射率的测定光谱，由平面透明且基本无色的塑料制成，使用双光束扫描分光光度计。ISO 13468的这一部分不能用于含有荧光材料的塑料。ISO 13468的本部分适用于直径不超过10 mm的透明模塑材料、薄膜和薄板厚注1:总透光率也可通过本国际标准第1部分中的单光束仪器测定标准注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 part of ISO 13468 covers the determination of the total luminous transmittance, in the visible region of thespectrum, of planar transparent and substantially colourless plastics, using a double-beam scanning spectrophotometer.This part of ISO 13468 cannot be used for plastics which contain fluorescent materials.This part of ISO 13468 is applicable to transparent moulding materials, films and sheets not exceeding 10 mm inthickness.NOTE 1 Total luminous transmittance can also be determined by a single-beam instrument as in part 1 of this InternationalStandard.NOTE 2 Substantially colourless plastics include those which are faintly tinted.NOTE 3 Specimens more than 10 mm thick may be measured provided the instrument can accommodate them, but theresults may not be comparable with those obtained using specimens less than 10 mm thick.

标准预览图