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ASTM D3895-19

Current Revision

Standard Test Method for Oxidative-Induction Time of Polyolefins by Differential Scanning Calorimetry

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1.1 This test method outlines a procedure for the determination of oxidative-induction time (OIT) of polymeric materials by differential scanning calorimetry (DSC). It is applicable to polyolefin resins that are in a fully stabilized/compounded form.

1.2 The values stated in SI units are to be regarded as the standard.

1.3 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 of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific hazards information is given in Section 8.

Note 1: This standard and ISO 11357–6 2013 address the same subject matter, but differ in technical content.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


5.1 The OIT is a qualitative assessment of the level (or degree) of stabilization of the material tested. This test has the potential to be used as a quality control measure to monitor the stabilization level in formulated resin as received from a supplier, prior to extrusion.

Note 2: The OIT measurement is an accelerated thermal-aging test and as such can be misleading. Caution should be exercised in data interpretation since oxidation reaction kinetics are a function of temperature and the inherent properties of the additives contained in the sample. For example, OIT results are often used to select optimum resin formulations. Volatile antioxidants may generate poor OIT results even though they may perform adequately at the intended use temperature of the finished product.

Note 3: There is no accepted sampling procedure, nor have any definitive relationships been established for comparing OIT values on field samples to those on unused products, hence the use of such values for determining life expectancy is uncertain and subjective.

SDO ASTM: ASTM International
Document Number D3895
Publication Date May 1, 2019
Language en - English
Page Count 7
Revision Level 19
Supercedes
Committee D20.30
Publish Date Document Id Type View
May 1, 2019 D3895-19 Revision
Dec. 1, 2014 D3895-14 Revision
April 1, 2007 D3895-07 Revision
Dec. 15, 2006 D3895-06 Revision
Oct. 1, 2004 D3895-04 Revision
Nov. 1, 2003 D3895-03 Revision
Nov. 10, 2002 D3895-02 Revision
July 10, 1998 D3895-98 Revision