标准摘要
[中文适用范围]： 本部分 ISO 6272 描述了一种方法，用于评估油漆、清漆或相关产品的干膜在受到下落重量在标准条件下作用于小面积球形压头引起的变形时，抵抗从基材开裂或剥落的能力。注：术语“冲击”和“抗冲击性”在本部分 ISO 6272 的标题和正文中使用，但所用装置的一个重要特征是它应产生快速变形而不是真正的冲击。由于该测试方法的重现性较差，当结果以数值表示时，该方法应仅限于在单一实验室进行测试。当使用排名代替数值时，实验室间的 agreement 会得到改善。 [外文原描述]： ISO 6272-2:2011 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, dropped under standard conditions, acting on a small-area spherical indenter. NOTE The terms "impact" and "impact resistance" are used in the title and text of ISO 6272-2, but an important characteristic of the apparatus used is that it should produce rapid deformation rather than a true impact. Because of the poor reproducibility of this test method, the method should be restricted to testing in only one laboratory when the results are expressed as numerical values. Interlaboratory agreement is improved when ranking is used in place of numerical values.
英文名称Paints and varnishes — Rapid-deformation (impact resistance) tests — Part 2: Falling-weight test, small-area indenter