标准摘要
[中文适用范围]： 本部分ISO 6272描述了一种方法，用于评估干漆膜、清漆或相关产品在受到下落重物（带有20毫米直径球形压头）在标准条件下产生的变形时，抵抗从基材开裂或剥落的能力。该方法可用作合格/不合格测试（从指定高度和指定质量进行一次跌落，以测试是否符合特定规格），也可用作分类测试（通过逐渐增加跌落高度和/或质量，确定涂层从基材开裂或剥落的最小质量和/或跌落高度）。 [外文原描述]： ISO 6272-1:2011 describes a method for evaluating the resistance of a dry film of paint, varnish or related product to cracking or peeling from a substrate when it is subjected to a deformation caused by a falling weight, with a 20-mm-diameter spherical indenter, dropped under standard conditions. NOTE The terms "impact" and "impact resistance" are used in the title and text of ISO 6272-1, but an important characteristic of the apparatus used is that it should produce rapid deformation rather than a true impact. The method described can be applied either as a pass/fail test, the test being carried out from one drop height and with a specified mass, so as to test compliance with a particular specification; or as a classification test, to determine, by gradually increasing the drop height and/or the mass, the minimum mass and/or drop height for which the coating cracks or peels from its substrate.
英文名称Paints and varnishes — Rapid-deformation (impact resistance) tests — Part 1: Falling-weight test, large-area indenter