BS 2782-5 Methods 530A and 530B-1976
塑料的试验方法.风化下光学和颜色性能.黄色指数测定.近似白色或近似无色材料的测定

Methods of testing plastics - Optical and colour properties, weathering - Determination of yellowness index - Determination of the colour of near-white or near-colourless materials

BS 2782-5 Methods 530A and 530B-1976 发布历史

These methods describe instrumental procedures for measuring the colour of non-fluorescent, near-white opaque or translucent plastics materials, or near-colourless transparent plastics materials. Method 530A is applicable where the only characteristic of significance is yellowness. A 'yellowness index' is specified for use in appropriate cases. Method 530B is more general and is applicable where a fuller description of colour and lightness characteristics is required. Both methods are applicable to the transmittance of trans-parent and translucent plastics materials and to the reflect-ance of opaque plastics materials and suitably backed translucent plastics materials. The methods are of particular value in measuring changes produced by ageing processes. note: * Fluorescence can be readily detected by visual examination in a dark room under ultra-violet illumination, + Commission International de I'Eclairage.

BS 2782-5 Methods 530A and 530B-1976由英国标准学会 GB-BSI 发布于 1976-10-29，并于 1976-10-29 实施。

BS 2782-5 Methods 530A and 530B-1976 在中国标准分类中归属于: G31 合成树脂、塑料基础标准与通用方法，在国际标准分类中归属于: 83.080.01 塑料综合。

BS 2782-5 Methods 530A and 530B-1976的历代版本如下：

• 1976年10月29日 BS 2782-5 Methods 530A and 530B-1976 塑料的试验方法.风化下光学和颜色性能.黄色指数测定.近似白色或近似无色材料的测定

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标准号

BS 2782-5 Methods 530A and 530B-1976

发布日期

1976年10月29日

实施日期

1976年10月29日

废止日期

无

中国标准分类号

G31

国际标准分类号

83.080.01

发布单位

GB-BSI

适用范围

These methods describe instrumental procedures for measuring the colour of non-fluorescent, near-white opaque or translucent plastics materials, or near-colourless transparent plastics materials. Method 530A is applicable where the only characteristic of significance is yellowness. A 'yellowness index' is specified for use in appropriate cases. Method 530B is more general and is applicable where a fuller description of colour and lightness characteristics is required. Both methods are applicable to the transmittance of trans-parent and translucent plastics materials and to the reflect-ance of opaque plastics materials and suitably backed translucent plastics materials. The methods are of particular value in measuring changes produced by ageing processes. note: * Fluorescence can be readily detected by visual examination in a dark room under ultra-violet illumination, + Commission International de I'Eclairage.