BS EN ISO 4628-2-2003 涂料和清漆.漆膜降解的评定.缺陷的量值和大小以及外观均匀变化强度的规定.起泡等级的评定

标准号：BS EN ISO 4628-2-2003
中文标准名称：涂料和清漆.漆膜降解的评定.缺陷的量值和大小以及外观均匀变化强度的规定.起泡等级的评定
英文标准名称：Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Assessment of degree of blistering
标准类型：G50
发布日期：2003/9/19 12:00:00
实施日期：2003/9/19 12:00:00
中国标准分类号：G50
国际标准分类号：87.040
适用范围：This part of ISO 4628 describes a method for assessing the degree of blistering of coatings by comparison with pictorial standards. The pictorial standards provided in this part of ISO 4628 illustrate blisters in the sizes 2, 3, 4 and 5, and each size in the quantities (densities) 2, 3, 4 and 5. ISO 4628-1 defines the system used for designating the quantity and size of defects and the intensity of changes in appearance of coatings and outlines the general principles of the system. This system is intended to be used, in particular, for defects caused by ageing and weathering, and for uniform changes such as colour changes, for example yellowing.