ISO 11357-6:2018
Plastics — Differential scanning calorimetry (DSC) — Part 6: Determination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT)
ISO 11357-6:2018 specifies methods for the determination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT) of polymeric materials by means of differential scanning calorimetry (DSC). It is applicable to polyolefin resins that are in a fully stabilized or compounded form, either as raw materials or finished products. It can be applicable to other plastics.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
4.1 General
4.2 Oxidation induction time (isothermal OIT)
4.3 Oxidation induction temperature (dynamic OIT)
5 Apparatus and materials
5.1 General
5.2 DSC instrument
5.3 Crucibles
5.4 Flowmeter
5.5 Oxygen
5.6 Air
5.7 Nitrogen
5.8 Gas-selector switch and regulators
6 Test specimens
6.1 General
6.2 Specimens from compression-moulded plates
6.3 Specimens from injection-moulded plates or melt flow extrudates
6.4 Specimens from finished parts
7 Test conditions and specimen conditioning
8 Calibration
8.1 Oxidation induction time (isothermal OIT)
8.2 Oxidation induction temperature (dynamic OIT)
9 Procedure
9.1 Setting up the instrument
9.2 Loading the test specimen into the crucible
9.3 Insertion of crucibles
9.4 Nitrogen, air and oxygen flow
9.5 Sensitivity adjustment
9.6 Performance of measurement
9.6.1 Oxidation induction time (isothermal OIT)
9.6.2 Oxidation induction temperature (dynamic OIT)
9.7 Cleaning
10 Expression of results
11 Precision and bias
12 Test report
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
4.1 General
4.2 Oxidation induction time (isothermal OIT)
4.3 Oxidation induction temperature (dynamic OIT)
5 Apparatus and materials
5.1 General
5.2 DSC instrument
5.3 Crucibles
5.4 Flowmeter
5.5 Oxygen
5.6 Air
5.7 Nitrogen
5.8 Gas-selector switch and regulators
6 Test specimens
6.1 General
6.2 Specimens from compression-moulded plates
6.3 Specimens from injection-moulded plates or melt flow extrudates
6.4 Specimens from finished parts
7 Test conditions and specimen conditioning
8 Calibration
8.1 Oxidation induction time (isothermal OIT)
8.2 Oxidation induction temperature (dynamic OIT)
9 Procedure
9.1 Setting up the instrument
9.2 Loading the test specimen into the crucible
9.3 Insertion of crucibles
9.4 Nitrogen, air and oxygen flow
9.5 Sensitivity adjustment
9.6 Performance of measurement
9.6.1 Oxidation induction time (isothermal OIT)
9.6.2 Oxidation induction temperature (dynamic OIT)
9.7 Cleaning
10 Expression of results
11 Precision and bias
12 Test report
Bibliography