BS EN ISO 8781-1-1991 颜料和稀释剂.色散特性评定方法.第1部分:有色颜料着色度变化评定

标准号：BS EN ISO 8781-1-1991
中文标准名称：颜料和稀释剂.色散特性评定方法.第1部分:有色颜料着色度变化评定
英文标准名称：Pigments and extenders. Methods of assessment of dispersion characteristics. Assessment from the charge in tinting strength of coloured pigments
标准类型：G54
发布日期：1991/4/30 12:00:00
实施日期：1991/4/30 12:00:00
中国标准分类号：G54
国际标准分类号：87.060.10
适用范围：Relates to coloured pigments which have been dispersed by one of the methods described in ISO 8780. The method is of general use for comparing similar pigments, for example a test pigment against an agreed reference pigment. The principle consists in dispersing the pigment in stages under specified conditions in an agreed binder system. After each dispersion stage, a portion of the mill base is taken and mixed separately with a white pigment to form a reduced paste. The tinting strength of each reduced paste is determined as described in ISO 787-24. The percentage increase in tinting strength between two dispersion stages is calculated in order to assess the ease of dispersibility of the pigment.