ASTM D3895-06

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

SCOPE
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 . Note 1
This test method is similar to ISO 11357-6, but not equivalent. ISO procedure provides additional information not supplied by this test method.

General Information

• Status: Historical
• Publication Date: 14-Dec-2006
• ICS: 83.080.20 - Thermoplastic materials
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.30 - Thermal Properties

Relations

• Replaces: ASTM D3895-04 - Standard Test Method for Oxidative-Induction Time of Polyolefins by Differential Scanning Calorimetry
• Effective Date: 15-Dec-2006
• Replaced By: ASTM D3895-07 - Standard Test Method for Oxidative-Induction Time of Polyolefins by Differential Scanning Calorimetry
• Effective Date: 01-Apr-2007
• Referred By: ASTM E2046-19 - Standard Test Method for Reaction Induction Time by Thermal Analysis
• Effective Date: 15-Dec-2006
• Referred By: ASTM F2987-12(2018) - Standard Specification for Corrugated Polyethylene Pipe and Fittings for Mine Heap Leach Aeration Applications
• Effective Date: 15-Dec-2006
• Referred By: ASTM F3506-21e1 - Standard Specification for Standard Specification for Polyethylene of Raised Temperature/Aluminum/Polyethylene of Raised Temperature (PE-RT/AL/PE-RT) Composite Pressure Pipe based on Inner Diameter (ID) for use in Air Conditioning and Refrigeration Line Set Systems
• Effective Date: 15-Dec-2006
• Referred By: ASTM E1858-23 - Standard Test Methods for Determining Oxidation Induction Time of Hydrocarbons by Differential Scanning Calorimetry
• Effective Date: 15-Dec-2006
• Referred By: ASTM F2720/F2720M-20 - Standard Specification for Glass Fiber Reinforced Polyethylene (PE-GF) Spiral Wound Large Diameter Pipe
• Effective Date: 15-Dec-2006
• Referred By: ASTM F3378/F3378M-22 - Standard Specification for Crosslinkable Polyethylene (CX-PE) Pipe
• Effective Date: 15-Dec-2006
• Referred By: ASTM F2929-17(2021) - Standard Specification for Crosslinked Polyethylene (PEX) Tubing of 0.070 in. Wall and Fittings for Radiant Heating Systems up to 75 psig
• Effective Date: 15-Dec-2006
• Referred By: ASTM F3123-22 - Standard Specification for Metric Outside Diameter Polyethylene (PE) Plastic Pipe (DR-PN)
• Effective Date: 15-Dec-2006
• Referred By: ASTM F2947/F2947M-21a - Standard Specification for 150 to 1500 mm [6 to 60 in.] Annular Corrugated Profile-Wall Polyethylene (PE) Pipe and Fittings for Sanitary Sewer Applications
• Effective Date: 15-Dec-2006
• Referred By: ASTM F3390-20 - Standard Specification for 3 through 24 in. Lined Flexible Corrugated Polyethylene Pipe for Land Drainage Applications
• Effective Date: 15-Dec-2006
• Referred By: ASTM F3336-22 - Standard Practice for Lipid Preconditioning of Ultra-High-Molecular-Weight Polyethylene for Accelerated Aging
• Effective Date: 15-Dec-2006
• Referred By: ASTM F2389-23 - Standard Specification for Pressure-rated Polypropylene (PP) Piping Systems
• Effective Date: 15-Dec-2006
• Referred By: ASTM E1860-23 - Standard Test Method for Elapsed Time Calibration of Thermal Analyzers
• Effective Date: 15-Dec-2006

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D 3895 – 06
Standard Test Method for
Oxidative-Induction Time of Polyolefins by Differential
1
Scanning Calorimetry
This standard is issued under the fixed designation D 3895; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope* 3. Terminology
1.1 This test method outlines a procedure for the determi- 3.1 Definitions—Definitions of terms applying to thermal
nation of oxidative-induction time (OIT) of polymeric materi- analysis appear in Terminology E 473.
als by differential scanning calorimetry (DSC). It is applicable 3.2 Description of Term Specific to This Standard:
to polyolefin resins that are in a fully stabilized/compounded 3.2.1 oxidative induction time—a relative measure of a
form. material’s resistance to oxidative decomposition; it is deter-
1.2 The values stated in SI units are to be regarded as the mined by the thermoanalytical measurement of the time
standard. interval to onset of exothermic oxidation of a material at a
1.3 This standard does not purport to address all of the specified temperature in an oxygen atmosphere.
safety concerns, if any, associated with its use. It is the 3.2.2 Abbreviations:
responsibility of the user of this standard to establish appro- 3.2.3 HDPE—high-density polyethylene.
priate safety and health practices and determine the applica- 3.2.4 LDPE—low-density polyethylene.
bility of regulatory limitations prior to use. Specific hazards 3.2.5 LLDPE—linear low-density polyethylene.
information is given in Section 8. 3.2.6 OIT—oxidative induction time.
NOTE 1—This test method is similar to ISO 11357–6, but not equiva-
4. Summary of Test Method
lent. ISO procedure provides additional information not supplied by this
4.1 The sample to be tested and the reference material are
test method.
heated at a constant rate in an inert gaseous environment
2. Referenced Documents
(nitrogen). When the specified temperature has been reached,
2
the atmosphere is changed to oxygen maintained at the same
2.1 ASTM Standards:
flow rate. The specimen is then held at constant temperature
D 4703 Practice for Compression Molding Thermoplastic
until the oxidative reaction is displayed on the thermal curve.
Materials into Test Specimens, Plaques, or Sheets
The time interval from when the oxygen flow is first initiated
E 473 Terminology Relating to Thermal Analysis and Rhe-
to the oxidative reaction is referred to as the induction period.
ology
4.1.1 The end of the induction period is signaled by an
E 691 Practice for Conducting an Interlaboratory Study to
abrupt increase in the specimen’s evolved heat or temperature
Determine the Precision of a Test Method
and may be observed by a differential scanning calorimeter
E 967 Test Method for Temperature Calibration of Differ-
(DSC). The OIT is determined from the data recorded during
ential Scanning Calorimeters and Differential Thermal
the isothermal test.
Analyzers
4.2 The type of containment system used depends on the
intended application use of the material being tested. Polyole-
finsusedinthewireandcableindustrytypicallyrequirecopper
1
This test method is under the jurisdiction ofASTM Committee D20 on Plastics
or aluminum pans, whereas polyolefins used in geomembrane
and is the direct responsibility of Subcommittee D20.30 on Thermal Properties.
and vapor-barrier film applications exclusively use aluminum
Current edition approved Dec. 15, 2006. Published January 2007. Originally
approved in 1980. Last previous edition approved in 2004 as D 3895 – 04.
pans.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.3 Unless otherwise specified, the analysis temperature
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
usedinthistesthasbeensetarbitrarilyat200.0°C.Forsamples
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. that have relatively low or high stabilization levels, a different
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D 3895 – 06
temperature may be selected (typically between 180 and 6.10 Spacer Plates, Shim Stock, Caul Plates, etc.
3 3
220°C) to yield a thermal curve that can be interpreted and 6.11 Mylar (Polyester Film) or Teflon (Polytetrafluoroet-
analyzed easily. hylene) Coated Cloth, for sample-plaque preparation.
6.12 Thickness Gage.
6.13 Laboratory Gas Burner, for copper-pan oxidation.
5. Significance and Use
6.14 Boiling Flask, with co
...