BS EN ISO 12058-1:2018
$86.31
Plastics. Determination of viscosity using a falling-ball viscometer – Inclined-tube method
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 14 |
This document specifies the general principles of a method, using an inclined‑tube falling‑ball viscometer, for determining the viscosity of polymers and resins in the liquid emulsified or dispersed state. It is intended for application to liquids over a viscosity measurement range of 0,6 mPa·s to 250 000 mPa·s (temperature range −20 °C to +120 °C) for which the shear stress and shear rate are proportional, i.e. the viscosity is independent of the shear rate. This ideal behaviour is commonly known as Newtonian behaviour. If a liquid differs significantly from this behaviour, different results can be obtained with the different balls of a falling‑ball viscometer or from viscometers with different geometries, such as capillary and rotational viscometers.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 4 | European foreword |
| 6 | Foreword |
| 7 | 1 Scope 2 Normative reference 3 Terms and definitions 4 Principle 5 Measurand and units 6 Measurement range and temperature range |
| 8 | 7 Apparatus 7.1 Falling‑ball viscometer |
| 10 | 7.2 Thermometer 7.3 Timer 7.4 Thermostat 8 Sampling 9 Procedure |
| 11 | 10 Expression of results 11 Precision |
| 12 | 12 Test report |
| 13 | Bibliography |
