ASTM E1545-05

Standard Test Method for Assignment of the Glass Transition Temperature by Thermomechanical Analysis

SCOPE
1.1 This test method describes procedures for the assignment of the glass transition temperature of materials on heating using thermomechanical measurements under prescribed experimental conditions.
1.2 This test method is applicable to amorphous or to partially crystalline materials that are sufficiently rigid below the glass transition to inhibit indentation by the sensing probe.
1.3 The normal operating temperature range is from 100 to 600°C. This temperature range may be extended depending upon the instrumentation used.
1.4 SI units are the standard.
1.5 This test method is related to ISO 11359-2. ISO 11359-2 additionally covers the determination of coefficient of linear thermal expansion not covered by this test method. This test method is related to IEC 61006 but uses a slower heating rate.
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 7.

General Information

• Status: Historical
• Publication Date: 30-Nov-2005
• ICS: 81.040.01 - Glass in general
• Technical Committee: E37 - Thermal Measurements
• Drafting Committee: E37.10 - Fundamental, Statistical and Mechanical Properties

Relations

• Replaces: ASTM E1545-00 - Standard Test Method for Assignment of the Glass Transition Temperature by Thermomechanical Analysis
• Effective Date: 01-Dec-2005
• Replaced By: ASTM E1545-11 - Standard Test Method for Assignment of the Glass Transition Temperature by Thermomechanical Analysis
• Effective Date: 01-Apr-2011
• Referred By: ASTM E1640-23 - Standard Test Method for Assignment of the Glass Transition Temperature By Dynamic Mechanical Analysis
• Effective Date: 01-Dec-2005
• Referred By: ASTM E2602-22 - Standard Test Methods for Assignment of the Glass Transition Temperature by Modulated Temperature Differential Scanning Calorimetry
• Effective Date: 01-Dec-2005
• Referred By: ASTM E1824-19 - Standard Test Method for Assignment of a Glass Transition Temperature Using Thermomechanical Analysis: Tension Method
• Effective Date: 01-Dec-2005
• Referred By: ASTM D3794-22 - Standard Guide for Testing Coil Coatings
• Effective Date: 01-Dec-2005
• Referred By: ASTM D1676-17 - Standard Test Methods for Film-Insulated Magnet Wire
• Effective Date: 01-Dec-2005

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:E1545–05
Standard Test Method for
Assignment of the Glass Transition Temperature by
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Thermomechanical Analysis
This standard is issued under the fixed designation E1545; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope momechanical Analyzers
2.2 Other Standard:
1.1 This test method describes procedures for the assign-
ISO11359-2 Plastics—ThermomechanicalAnalysis(TMA)
mentoftheglasstransitiontemperatureofmaterialsonheating
– Part 2: Determination of Coefficient of Linear Thermal
using thermomechanical measurements under prescribed ex-
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Expansion and Glass Transition Temperature
perimental conditions.
IEC 61006 Methods of Test for the Determination of the
1.2 This test method is applicable to amorphous or to
GlassTransitionTemperature of Electrical Insulating Ma-
partially crystalline materials that are sufficiently rigid below
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terials
the glass transition to inhibit indentation by the sensing probe.
1.3 The normal operating temperature range is from−100
3. Terminology
to 600°C. This temperature range may be extended depending
3.1 Definitions—The following terms are applicable to this
upon the instrumentation used.
test method and can be found in Terminologies E473 and
1.4 The values stated in SI units are to be regarded as
E1142: thermomechanical analysis (TMA), thermomechanical
standard. No other units of measurement are included in this
measurement, thermodilatometry, glass transition, glass tran-
standard.
sition temperature, and linear thermal expansion.
1.5 ThistestmethodisrelatedtoISO11359-2.ISO11359-2
additionally covers the determination of coefficient of linear
4. Summary of Test Method
thermal expansion not covered by this test method. This test
4.1 Thistestmethodusesthermomechanicalanalysisequip-
method is related to IEC61006 but uses a slower heating rate.
ment (thermomechanical analyzer, dilatometer, or similar de-
1.6 This standard does not purport to address all of the
vice)toassignthechangeindimensionofaspecimenobserved
safety concerns, if any, associated with its use. It is the
when the material is subjected to a constant heating rate
responsibility of the user of this standard to establish appro-
through its glass transition. This change in dimension associ-
priate safety and health practices and determine the applica-
atedwiththechangefromvitreoussolidtoamorphousliquidis
bility of regulatory limitations prior to use. Specific precau-
observed as movement of the sensing probe in direct contact
tionary statements are given in Section 7.
withthespecimenandisrecordedasafunctionoftemperature.
2. Referenced Documents The intersection of the extrapolation of the slope of the probe
2 displacement curve before and after the transition is used to
2.1 ASTM Standards:
determine the glass transition temperature.
E473 Terminology Relating to Thermal Analysis and Rhe-
ology
5. Significance and Use
E691 Practice for Conducting an Interlaboratory Study to
5.1 The glass transition is dependent on the thermal history
Determine the Precision of a Test Method
ofthematerialtobetested.Foramorphousandsemicrystalline
E1142 Terminology Relating to Thermophysical Properties
materials the assignment of the glass transition temperature
E1363 Test Method for Temperature Calibration of Ther-
may lead to important information about thermal history,
processingconditions,stability,progressofchemicalreactions,
and mechanical and electrical behavior.
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ThistestmethodisunderthejurisdictionofASTMCommitteeE37onThermal
5.2 Thermomechanical analysis provides a rapid means of
Measurements and is the direct responsibility of Subcommittee E37.10 on Funda-
detecting changes in hardness or linear expansion associated
mental, Statistical and Mechanical Properties.
Current edition approved Dec. 1, 2005. Published August 2006. Originally with the glass transition.
approved in 1993. Last previous edition approved in 2000 as E1545–00. DOI:
10.1520/E1545-05.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM 4th Floor, New York, NY 10036, http://www.ansi.org.
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Standards volume information, refer to the standard’s Document Summary page on Available from International Electrotechnical Commission (IEC), 3 rue de
the ASTM website. Varembé, Case postale 131, CH-1211, Geneva 20, Switzerland, http://www.iec.ch.
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