标准编号：ISO 4628-7:2016
中文名称：色漆和清漆 色漆涂层剥蚀的评定 一般性缺陷程度数量和大小的规定表面统一变化强度 第7部分：柔软法评定灰化程度
英文名称：Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and size of defects, and of intensity of uniform changes in appearance — Part 7: Assessment of degree of chalking
发布日期：2016-01
标准范围
This part of ISO 4628 specifies a method suitable, in particular, for rating the degree of chalkingon white or coloured exterior coatings and coating systems on rough surfaces (i.e. those having aroughness greater than segment 4 of the reference comparator G as described in ISO 8503-1).The test method specified can also be used for the assessment of the degree of chalking of coatingsand coating systems on smooth surfaces, but the method specified in ISO 4628-6:2011 is preferable forthis purpose.The test method is applicable to coatings and coating systems on mineral substrates, e.g. fibre cement,brick, concrete, and renderings, independent of the structure of the surface. The method can be usedquite effectively by experienced operators and is recommended for laboratory use as well as for onsiteevaluation.
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