Plastics — Differential Scanning Calorimetry (DSC) — Part 6: Determination of Oxidation Induction Time (Isothermal OIT) and Oxidation Induction Temperature (Dynamic OIT)
Warning — Persons using this document should be familiar with normal laboratory practice, if applicable. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any regulatory requirements.
1 Scope
This part of GB/T 19466 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 may be applicable to other plastics.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of GB/T 19466. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 1845.2-2006 Plastics ― Polyethylene(PE) Moulding and Extrusion Materials ― Part 2: Preparation of Test Specimens and Determination of Properties (ISO 1872-2:1997, MOD)
GB/T 2035 Terms and Definitions for Plastics (GB/T 2035-2008, ISO 472:1999, IDT)
GB/T 2546.2-2003 Plastics ― Polypropylene (PP) Moulding and Extrusion Materials ― Part 2: Preparation of Test Specimens and Determination of Properties (ISO 1873-2:1997, MOD)
GB/T 9352-2008 Plastic ― Compression Moulding of Test Specimens of Thermoplastic Materials (ISO 293:2004, IDT)
GB/T 17037.3-2003 Plastics ― Injection Moulding of Test Specimens of Thermoplastic Materials ― Part3: Small Plates (ISO 294-3:2002, IDT)
GB/T 19466.1-2004 Plastics — Differential Scanning Calorimetry (DSC) — Part 1: General Principles (idt ISO 11357-1:1997)
ISO 8986-2:1995 Plastics — Polybutene (PB) Moulding and Extrusion Materials — Part 2: Preparation of Test Specimens and Determination of Properties
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 2035 and GB/T 19466.1-2004 and the following apply.
3.1
oxidation induction time
Foreword II
Introduction IV
1 Scope
2 Normative References
3 Terms and Definitions
4 Principle
5 Apparatus and Materials
6 Test Specimen
7 Test Conditions and Specimen Conditioning
8 Calibration
9 Procedure
10 Expression of Results
11 Precision
12 Test Report
Annex A (Informative) Precision of ISO 11357-6:2008
Bibliography
