ISO 9117-4:2012 specifies a test for determining the times taken to reach various stages of drying of organic coatings, using a mechanical straight-line or circular drying-time recorder. The use of a mechanical recorder is valuable in comparing the drying behaviour of coatings of the same generic type, when one coating might form a gel at a faster rate than another or might resist scratching better than another. The test is intended to simulate the conditions which exist when painted articles are stacked upon each other.
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Sisällysluettelo
Foreword
Introduction
1 Scope
2 Normative references
3 Principle
3.1 Straight-line recorder
3.2 Circular recorder
4 Sampling
5 Test panels
5.1 Substrate
5.2 Coating of test panels
6 Test conditions and number of tests
7 Method A - Using a straight-line drying-time recorder
7.1 Apparatus
7.2 Procedure
8 Method B — Using a circular drying-time recorder
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 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