ISO 22516:2019 Paints and varnishes – Practical determination of non-volatile and volatile matter content during application.
This document specifies a test method for the determination of non-volatile matter of coatings directly after application or after intermediate or final drying. In practice, the determination of volatile matter is applied particularly in regard to water-thinnable coatings which are re-coated with an additional coating material.
Furthermore, the method can be used to compare the efficiency of different application and drying methods.
The content of non-volatile or volatile matter of a product after application is no absolute variable but depends on the application and drying conditions applied during the test. Consequently, applying this method gives only relative values and not the real values for the content of non-volatile matter, due to solvent retention, thermal decomposition and evaporation of low-molecular contents.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1513, Paints and varnishes — Examination and preparation of test samples
ISO 1514, Paints and varnishes — Standard panels for testing
ISO 4618, Paints and varnishes — Terms and definitions
ISO 15528, Paints, varnishes and raw materials for paints and varnishes — Sampling
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4618 and the following apply.
ISO and IEC maintain term inological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/ohp
— IEC Electropedia: available at http://www.electropedia.org/
3.1
process step
operations and time periods, which have to be successive in regard to the coating method in order to result in a given coating system.
Note 1 to entry: Depending on the focus several successive operations can be subsumed as one process step.
3.2
non-volatile matter after defined process step
NVp
residue by mass obtained after the application from the single process steps of examination under specified conditions of test.ISO 22516 pdf download.