BS EN ISO 3251:2019 – TC:2020 Edition
$134.27
Tracked Changes. Paints, varnishes and plastics. Determination of non-volatile-matter content
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 38 |
This document specifies a method for determining the non-volatile-matter content by mass of paints, varnishes, binders for paints and varnishes, polymer dispersions and condensation resins such as phenolic resins (resols, novolak solutions etc.).
The method is also applicable to formulated dispersions containing fillers, pigments and other auxiliaries (e.g. thickeners, film-forming agents).
The non-volatile-matter content of a product is not an absolute quantity but depends upon the temperature and period of heating used for the determination. Consequently, when using this method, only relative and not true values for non-volatile-matter content are obtained owing to solvent retention, thermal decomposition and evaporation of low molecular mass constituents. The method is therefore primarily intended for testing different batches of the same type of product.
This method is suitable for synthetic rubber lattices, provided heating for a specific period of time is considered appropriate ( ISO 124 specifies heating until the loss in mass of a 2 g test portion following successive periods of heating is less than 0,5 mg).
In-house methods for determining non-volatile matter often include drying with infrared or microwave radiation. Standardization of such methods is not possible, since they are not generally applicable. Several polymer compositions tend to decompose during such treatment and therefore give incorrect results.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | compares BS EN ISO 3251:2019 |
| 2 | TRACKED CHANGES Text example 1 — indicates added text (in green) |
| 3 | BS EN ISO 3251:20082019 BRITISH STANDARD Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 200830 June 2019. |
| 4 | English Version |
| 5 | European foreword Endorsement notice |
| 8 | Foreword |
| 10 | Introduction |
| 12 | 3.1 non-volatile matter NV |
| 13 | WARNING — To protect against explosion or fire, products containing flammable volatile substances should be handled with care. National regulations should be followed. 6.1 Number of determinations 6.2 Preparation and weighing of dish 6.3 Weighing of samples |
| 14 | 6.4 Heating 6.5 Weighing after heating |
| 15 | 9.1 Repeatability limit r 9.2 Reproducibility limit R |
| 19 | Table A.2 — Test parameters for polymer dispersions |
| 20 | Bibliography |
| 22 | National foreword |
| 24 | European foreword |
| 26 | Foreword |
| 27 | Introduction |
| 29 | 1 Scope 2 Normative references 3 Terms and definitions 4 Apparatus |
| 30 | 5 Sampling |
| 31 | 6 Procedure 6.1 Number of determinations 6.2 Preparation and weighing of dish 6.3 Weighing of samples 6.4 Heating |
| 32 | 6.5 Weighing after heating 7 Supplementary test conditions 8 Expression of results 9 Precision 9.1 Repeatability limit r |
| 33 | 9.2 Reproducibility limit R 10 Test report |
| 34 | Annex A (informative) Common test parameters |
| 36 | Bibliography |
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BS EN ISO 3251:2019
Paints, varnishes and plastics. Determination of non-volatile-matter content Published By Publication Date Number of Pages…
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ISO 3251:2019
Paints, varnishes and plastics — Determination of non-volatile-matter content Published By Publication Date Number of…
