BS EN ISO 6504-1:2019
$167.15
Paints and varnishes. Determination of hiding power – Kubelka-Munk method for white and light-coloured paints
| Published By | Publication Date | Number of Pages |
| BSI | 2019 | 44 |
This document specifies a method for determining the hiding power (spreading rate necessary to give a hiding power of 98 %) of white or light-coloured paints. It is applicable to paint films having the tri-stimulus value of Y ? 70 and hiding power > 80 %. It is not applicable to fluorescent or metallic paints.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 4 | European foreword Endorsement notice |
| 6 | Foreword |
| 7 | Introduction |
| 8 | 1 Scope 2 Normative references 3 Terms and definitions 4 Principle |
| 9 | 5 Kubelka-Munk equations |
| 10 | 6 Apparatus and materials 6.1 Substrates 6.1.1 Determination of RB |
| 11 | 6.1.2 Determination of R∞ 6.2 Film applicators 6.3 Reflectometer 6.4 Template 7 Limitations 8 Sampling 9 Procedure 9.1 Determination of R∞ |
| 12 | 9.2 Determination of RB 9.2.1 Preparation of test films 9.2.2 Measurement of reflectance RB |
| 13 | 9.3 Determination of film thickness 9.3.1 General 9.3.2 Method using polyester film 9.3.3 Method using black glass plates 10 Expression of results 10.1 Calculation of wet film thickness |
| 14 | 10.2 Calculation of hiding power 11 Precision 11.1 Repeatability (r) 11.2 Reproducibility (R) 12 Test report |
| 15 | Annex A (informative) Graphs for determination of St from RB and R∞ for Rg = 0,80 |
| 40 | Annex B (informative) Table of values of reflectivity R∞ and factor α for Rg = 0,80 |
| 41 | Annex C (informative) Examples of the calculation of hiding power from measurements of RB and R∞ |
| 43 | Bibliography |
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BS EN ISO 6504-1:2019 – TC:2020 Edition
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