物理安全检测
GB/T 30789.7色漆和清漆变化程度的标识 第7部分
标准名称
GB/T 30789.7 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
GB/T 30789.7色漆和清漆 涂层老化的评价 缺陷的数量和大小以及外观均匀变化程度的标识 第7部分：天鹅绒布法评定粉化等级
适用范围
GB/T 30789的本部分规定了一种粉化等级的评定方法,尤其适用于粗糙表面上的白色或其他色漆涂层和多涂层体系(例如,粗糙度大于ISO 8503-1规定的粗糙度比较样块G中的第4段)粉化等级评定
试验原理
用合适的拭布将疏松附着在受试涂层上的粉末擦掉。将拭布上沾附粉末的多少与等级表对照,评定粉化的等级
引用文件
ISO4628-1 色漆和清漆 涂层老化的评价 缺陷的数量和大小以及外观均匀变化程度的标识第1部分:总则和标识体系( Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and size of defects , and of intensity of uniform changes in appearance — Part1 : General introduction and designation system )
ISO4628-6 :色漆和清漆 涂层老化的评价 缺陷的数量和大小以 及外观均匀变化程度的标识第6部分: 胶带法评定粉化等级( Paints and varnishes — Evaluation of degradation of paint coatings — Designation of intensity , quantity and size of common types of defect — Part6 : Rating of degree of chalking by tape method )
ISO8503-1涂覆涂料和 相 关产品 前钢 材表面预处理 喷射清理后 的 钢 材表面粗糙度 特性 第1部分:用于评定磨料喷射清理后钢材表面粗糙度的 ISO 表面粗糙度比较样块的技术要求和定义( Preparation of steel substrates before application of paints and related products — Surface roughness characteristics of blast-cleaned steel substrates — Part1 : Specifications and definitions for ISO surface profilecomparatorsfortheassessmentofabrasiveblast-cleanedsurfaces )
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