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

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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.

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