BS EN ISO 2814-2007 涂料和清漆.同类型颜色涂料对比率(遮盖力)

标准号：BS EN ISO 2814-2007
中文标准名称：涂料和清漆.同类型颜色涂料对比率(遮盖力)
英文标准名称：Paints and varnishes - Comparison of contrast ratio (hiding power) of paints of the same type and colour
标准类型：G50
发布日期：2007/1/31 12:00:00
实施日期：2007/1/31 12:00:00
中国标准分类号：G50
国际标准分类号：87.040
适用范围：Specifies the standard method to be used in comparing the contrast ratios given by paint films of white or ligth colours, of refelctance factor greater than 40 %, dried at normal air temperature and applied at approximately equal wet film thickness to black and white substrates. The wet film thickness selected, approximately 50 um, corresponds to a spreading rate of approximately 20 m2/l. Because different operators using the same film coating device obtain films differing in thickness the method is not satisfactory as an absolute method for the determination of hiding power.