ASTM D5885/D5885M-15
(Test Method)Standard Test Method for Oxidative Induction Time of Polyolefin Geosynthetics by High-Pressure Differential Scanning Calorimetry
Standard Test Method for Oxidative Induction Time of Polyolefin Geosynthetics by High-Pressure Differential Scanning Calorimetry
SIGNIFICANCE AND USE
5.1 The oxidative induction time is a characteristic of a compounded polyolefin product that is dependent not only on the type and amount of additives present, but also on the type of resin. In well-behaved systems, this test method can be used as a quality control measure to monitor the stabilization in geosynthetics as received from a supplier.
5.2 When this test method is used to compare different geomembrane formulations containing different antioxidant packages, then those results shall be considered valid only at the temperature of test.
5.3 This test method is intended as an geosynthetic test. Use of the OIT value to estimate the lifetime of the geomembrane from which the test specimen is taken is not addressed nor shall it be used for this purpose.
5.3.1 The OIT measurement is an accelerated thermal aging test and, as such, interpretation of resulting data may be misleading if done by an inexperienced operator. Caution should be exercised in data interpretation since oxidation reaction kinetics are a function of temperature and the properties of the additives contained in the geosynthetic sample. For example, OIT values are often used to select optimum resin formulations. Certain antioxidants, however, may generate poor OIT results even though they may be adequate at their intended use temperature and vice versa.
5.4 This test method can be used for other purposes such as manufacturing control and research and development.
5.5 Oxidation induction time is strongly dependent upon test temperature and the partial pressure of oxygen. The higher the test temperature or the oxygen partial pressure, or both, the shorter the oxidation induction time.
5.5.1 The use of high test temperature, however, may have deleterious effects. The first of these is the potential volatilization of additive packages used to stabilize the test materials. The second is the potential for the influence of chemical mechanisms which are not significant at end-use operatio...
SCOPE
1.1 This test method covers a procedure for the determination of the oxidative induction time (OIT) of polyolefin geosynthetics using high pressure differential scanning calorimetry.
1.2 The focus of the test is on geomembranes, but geogrids, geonets, geotextiles, and other polyolefin-related geosynthetics are also suitable for such evaluation.
1.3 This test method measures the oxidative induction time associated with a given test specimen at a specified temperature and pressure.
1.4 This is an accelerated test for highly stabilized materials. It is applicable only to material whose OIT values under 3.4 MPa of oxygen is greater than 30 min at 150°C.
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.6 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 precautionary statements are given in Section 8.
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Designation: D5885/D5885M −15
Standard Test Method for
Oxidative Induction Time of Polyolefin Geosynthetics by
1
High-Pressure Differential Scanning Calorimetry
This standard is issued under the fixed designation D5885/D5885M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D4439 Terminology for Geosynthetics
D4491 Test Methods for Water Permeability of Geotextiles
1.1 This test method covers a procedure for the determina-
by Permittivity
tion of the oxidative induction time (OIT) of polyolefin
D4565 Test Methods for Physical and Environmental Per-
geosynthetics using high pressure differential scanning calo-
formance Properties of Insulations and Jackets for Tele-
rimetry.
communications Wire and Cable
1.2 The focus of the test is on geomembranes, but geogrids,
D4703 Practice for Compression Molding Thermoplastic
geonets, geotextiles, and other polyolefin-related geosynthetics
Materials into Test Specimens, Plaques, or Sheets
are also suitable for such evaluation.
E473 Terminology Relating to Thermal Analysis and Rhe-
ology
1.3 This test method measures the oxidative induction time
associatedwithagiventestspecimenataspecifiedtemperature E967 Test Method for Temperature Calibration of Differen-
tial Scanning Calorimeters and Differential Thermal Ana-
and pressure.
lyzers
1.4 Thisisanacceleratedtestforhighlystabilizedmaterials.
E691 Practice for Conducting an Interlaboratory Study to
It is applicable only to material whose OIT values under 3.4
Determine the Precision of a Test Method
MPa of oxygen is greater than 30 min at 150°C.
G88 Guide for Designing Systems for Oxygen Service
1.5 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in
3. Terminology
each system may not be exact equivalents; therefore, each
3.1 Definitions:
system shall be used independently of the other. Combining
3.1.1 differential scanning calorimetry (DSC), n—a tech-
values from the two systems may result in non-conformance
nique in which the difference in heat flow inputs into a
with the standard.
substance and a reference material is measured as a function of
1.6 This standard does not purport to address all of the
temperatureortime,whilethesubstanceandreferencematerial
safety concerns, if any, associated with its use. It is the
are subjected to a controlled-temperature program. (See Ter-
responsibility of the user of this standard to establish appro-
minology E473.)
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. Specific precau- 3.1.2 geomembrane, n—anessentiallyimpermeablegeosyn-
thetic composed of one or more synthetic sheets. (See Termi-
tionary statements are given in Section 8.
nology D4439.)
2. Referenced Documents
3.1.2.1 Discussion—In this test method, essentially imper-
2
meable means that no measurable liquid flows through a
2.1 ASTM Standards:
geosynthetic when tested in accordance with Test Methods
D3895 Test Method for Oxidative-Induction Time of Poly-
D4491.
olefins by Differential Scanning Calorimetry
3.1.3 geosynthetic, n—a planar product manufactured from
polymeric material used with soil, rock, earth, or other geo-
1
This test method is under the jurisdiction of ASTM Committee D35 on
technical engineering-related material as an integral part of a
Geosynthetics and is the direct responsibility of Subcommittee D35.02 on Endur-
ance Properties.
man-made project, structure, or system. (See Terminology
Current edition approved May 1, 2015. Published June 2015. Originally
D4439.)
approved in 1995. Last previous edition approved in 2012 as D5885 – 06 (2012).
DOI: 10.1520/D5885_D5885M-15.
3.1.4 high-pressure differential scanning calorimetry
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
(HPDSC), n—differential scanning calorimetry in which the
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
substance and reference material are exposed to a controlled
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. superambient atmosphere.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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D5885/D5885M − 15
3.1.5 index test, n—a test procedure that may be used to the test temperature or the oxygen partial pressure, or both, the
establish an order for a set of specimens with respect to the shorter the oxidation induction time.
property of interest. 5.5.1 The use of high test tempera
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D5885 − 06 (Reapproved 2012) D5885/D5885M − 15
Standard Test Method for
Oxidative Induction Time of Polyolefin Geosynthetics by
1
High-Pressure Differential Scanning Calorimetry
This standard is issued under the fixed designation D5885;D5885/D5885M; the number immediately following the designation indicates
the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers a procedure for the determination of the oxidative induction time (OIT) of polyolefin geosynthetics
using high pressure differential scanning calorimetry.
1.2 The focus of the test is on geomembranes, but geogrids, geonets, geotextiles, and other polyolefin-related geosynthetics are
also suitable for such evaluation.
1.3 This test method measures the oxidative induction time associated with a given test specimen at a specified temperature and
pressure.
1.4 This is an accelerated test for highly stabilized materials. It is applicable only to material whose OIT values under 3.4 MPa
of oxygen is greater than 30 min at 150°C.
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as the standard. The values stated in
parentheses are provided for information only.each system may not be exact equivalents; therefore, each system shall be used
independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.6 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 precautionary statements are given in Section 8.
2. Referenced Documents
2
2.1 ASTM Standards:
D3895 Test Method for Oxidative-Induction Time of Polyolefins by Differential Scanning Calorimetry
D4439 Terminology for Geosynthetics
D4491 Test Methods for Water Permeability of Geotextiles by Permittivity
D4565 Test Methods for Physical and Environmental Performance Properties of Insulations and Jackets for Telecommunications
Wire and Cable
D4703 Practice for Compression Molding Thermoplastic Materials into Test Specimens, Plaques, or Sheets
E473 Terminology Relating to Thermal Analysis and Rheology
E967 Test Method for Temperature Calibration of Differential Scanning Calorimeters and Differential Thermal Analyzers
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
G88 Guide for Designing Systems for Oxygen Service
3. Terminology
3.1 Definitions:
3.1.1 differential scanning calorimetry (DSC), n—a technique in which the difference in heat flow inputs into a substance and
a reference material is measured as a function of temperature or time, while the substance and reference material are subjected to
a controlled-temperature program. (See Terminology E473.)
3.1.2 geomembrane, n—an essentially impermeable geosynthetic composed of one or more synthetic sheets. (See Terminology
D4439.)
1
This test method is under the jurisdiction of ASTM Committee D35 on Geosynthetics and is the direct responsibility of Subcommittee D35.02 on Endurance Properties.
Current edition approved July 1, 2012May 1, 2015. Published July 2012June 2015. Originally approved in 1995. Last previous edition approved in 20062012 as
D5885 – 06.D5885 – 06 (2012). DOI: 10.1520/D5885-06R12.10.1520/D5885_D5885M-15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D5885/D5885M − 15
3.1.2.1 Discussion—
In this test method, essentially impermeable means that no measurable liquid flows through a geosynthetic when tested in
accordance with Test MethodMethods D4491.
3.1.3 geosynthetic, n—a planar product manufactured from polymeric material used with soil, rock, earth, or other geotechnical
engineering-related material as an integral part of a man-made project, structure, or system. (See Terminology D4439.)
3.1.4 high-pressure differential scanning calorimetry (HP
...
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