EN ISO 4628-7:2003 色漆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.第7部分:用丝绒法评定粉化等级 ISO 4628-7-2003
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 by velvet method ISO 4628-7:2003