標準號：BS EN ISO 4628-2-2003
中文標準名稱：涂料和清漆.漆膜降解的評定.缺陷的量值和大小以及外觀均勻變化強度的規定.起泡等級的評定
英文標準名稱：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
標準類型：G50
發布日期：2003/9/19 12:00:00
實施日期：2003/9/19 12:00:00
中國標準分類號：G50
國際標準分類號：87.040
適用范圍：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.