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.
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Sisällysluettelo
Foreword
1 Scope
2 Normative references
3 Principle
4 Apparatus
5 Reagents
6 Sampling
7 Test panels
7.1 Substrate
7.2 Preparation and coating
7.3 Drying
7.4 Thickness of coating
8 Procedure
8.1 General
8.2 Classification test (to determine the minimum drop height which will cause cracking or peeling)
ISO 13076:2012 Paints and varnishes -- Lighting and procedure for visual assessments of coatings
ISO 1513:2010 Paints and varnishes -- Examination and preparation of test samples
ISO 1514:2004 Paints and varnishes -- Standard panels for testing
ISO 13076:2012 Paints and varnishes -- Lighting and procedure for visual assessments of coatings
ISO 1513:2010 Paints and varnishes -- Examination and preparation of test samples
ISO 1514:2004 Paints and varnishes -- Standard panels for testing
ISO 15528:2000 Paints, varnishes and raw materials for paints and varnishes -- Sampling
ISO 2808:2007 Paints and varnishes -- Determination of film thickness
ISO 3270:1984 Paints and varnishes and their raw materials -- Temperatures and humidities for conditioning and testing