ISO 3233-2:2019
Paints and varnishes — Determination of the percentage volume of non-volatile matter — Part 2: Method using the determination of non-volatile-matter content in accordance with ISO 3251 and determination of dry film density on coated test panels by the Arc
This document specifies a method for determining the non-volatile matter by volume (NVV) of coating materials by determining the practical dry-film density. This method determines the volume percentage of non-volatile matter in paints, varnishes and related products by measuring the density of a dry coating for any specified temperature range and period of drying or curing. The non-volatile matter content is determined in accordance with ISO 3251.
Using the non-volatile matter by volume results obtained in accordance with this document, it is possible to calculate the practical spreading rate of coating materials.
This method specifies an additional shape of plate to those described in ISO 3233‑1 and is suitable for all products which can be applied by dipping.
This document is not applicable to coating materials which exceed the Critical Pigment Volume Concentration (CPVC).
Annex A gives an overview of the existing methods for the determination of non-volatile matter content and of non-volatile matter volume.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Sampling
7 Procedure
7.1 Number of determinations and preparation
7.2 Determination of the practical dry-film density
7.2.1 Determination of the mass of the uncoated plate in air and in the immersion liquid
7.2.2 Weighing the coating material and determination of the mass of the plate with coating material
7.3 Determination of the density
7.4 Determination of the non-volatile-matter content
7.5 Determination of film thickness
8 Evaluation
8.1 Calculation of the practical dry-film density
8.2 Calculation of the non-volatile matter by volume using the practical dry-film density
8.3 Determination of the practical spreading rate
9 Precision
9.1 Repeatability
9.2 Reproducibility
10 Test report
Annex A (informative) Overview of existing methods for determination of non-volatile matter content and volume of non-volatile matter
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Sampling
7 Procedure
7.1 Number of determinations and preparation
7.2 Determination of the practical dry-film density
7.2.1 Determination of the mass of the uncoated plate in air and in the immersion liquid
7.2.2 Weighing the coating material and determination of the mass of the plate with coating material
7.3 Determination of the density
7.4 Determination of the non-volatile-matter content
7.5 Determination of film thickness
8 Evaluation
8.1 Calculation of the practical dry-film density
8.2 Calculation of the non-volatile matter by volume using the practical dry-film density
8.3 Determination of the practical spreading rate
9 Precision
9.1 Repeatability
9.2 Reproducibility
10 Test report
Annex A (informative) Overview of existing methods for determination of non-volatile matter content and volume of non-volatile matter
Bibliography