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BS EN ISO 11358-1:2022

BS EN ISO 11358-1:2022

$102.76

Plastics. Thermogravimetry (TG) of polymers – General principles

Published By Publication Date Number of Pages
BSI 2022 20
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This document specifies general conditions for the analysis of polymers using thermogravimetric techniques. It is applicable to liquids or solids. Solid materials can be in the form of pellets, granules or powders. Fabricated shapes reduced to appropriate specimen size can also be analysed by this method. This document establishes methods for the investigation of physical effects and chemical reactions that are associated with changes of mass. This document can be used to determine the temperature(s) and rate(s) of decomposition of polymers, and to measure at the same time the amounts of volatile matter, additives and/or fillers they contain. This document is applicable to measurements in dynamic mode (mass change versus temperature or time under programmed temperature conditions) or isothermal mode (mass change versus time at constant temperature). This document is applicable to measurements at different testing atmospheres, such as separation of decomposition in an inert atmosphere from oxidative degradation.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 European foreword
Endorsement notice
6 Foreword
7 1 Scope
2 Normative references
3 Terms and definitions
8 4 Principle
5 Apparatus
9 6 Test specimen preparation
6.1 General
6.2 Test specimens from finished products
6.3 Test specimen conditioning
6.4 Test specimen mass
7 Calibration
7.1 Mass calibration
7.2 Temperature calibration
11 8 Procedure
8.1 General
8.2 Temperature scanning mode
12 8.3 Isothermal mode
8.4 Buoyancy correction
9 Expression of results
9.1 Graphical representation
9.2 Determination of increase in mass
13 9.3 Determination of loss in mass
9.3.1 Single-stage decrease in mass
14 9.3.2 Multi-stage decrease in mass
17 9.3.3 Determination of residue
10 Test report
18 Annex A (informative) Calibration materials for Curie-point temperature calibration
19 Bibliography

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BS EN ISO 11358-1:2022
$102.76