ASTM D5026-95a

Standard Test Method for Plastics: Dynamic Mechanical Properties: In Tension

SCOPE
1.1 This test method covers the use of dynamic mechanical instrumentation for gathering and reporting the visco-elastic properties of thermoplastic and thermosetting resins and composite systems in the form of rectangular specimens molded directly or cut from sheets, plates, or molded shapes. The tensile data generated may be used to identify the thermomechanical properties of a plastics material or composition using a variety of dynamic mechanical instruments.
1.2 This test method is intended to provide means for determining the modulus as a function of temperature of a wide variety of plastics materials using nonresonant forced-vibration techniques, in accordance with Practice D 4065. Plots of the elastic (storage); loss (viscous); and complex moduli and tan delta as a function of frequency, time, or temperature are indicative of significant transitions in the thermomechanical performance of the polymeric material system.
1.3 This test method is valid for a wide range of frequencies, typically from 0.01 to 100 Hz.
1.4 Apparent discrepancies may arise in results obtained under differing experimental conditions. These apparent differences from results observed in another study can usually be reconciled, without changing the observed data, by reporting in full (as described in this test method) the conditions under which the data were obtained.
1.5 Due to possible instrumentation compliance, the data generated are intended to indicate relative and not necessarily absolute property values.
1.6 Test data obtained by this test method are relevant and appropriate for use in engineering design.
1.7 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.8 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.
Note 1—There is no similar or equivalent ISO standard.

General Information

• Status: Historical
• Publication Date: 09-Sep-2001
• ICS: 83.080.01 - Plastics in general
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.10 - Mechanical Properties

Relations

• Replaced By: ASTM D5026-01 - Standard Test Method for Plastics: Dynamic Mechanical Properties: In Tension
• Effective Date: 10-Sep-2001
• Referred By: ASTM D4065-20 - Standard Practice for Plastics: Dynamic Mechanical Properties: Determination and Report of Procedures
• Effective Date: 10-Sep-2001
• Referred By: ASTM D6382/D6382M-99(2022) - Standard Practice for Dynamic Mechanical Analysis and Thermogravimetry of Roofing and Waterproofing Membrane Material
• Effective Date: 10-Sep-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 5026 – 95a An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
Measuring the Dynamic Mechanical Properties of Plastics in
Tension
This standard is issued under the fixed designation D 5026; 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 bility of regulatory limitations prior to use.
1.1 This test method covers the use of dynamic mechanical
NOTE 1—There is no similar or equivalent ISO standard.
instrumentation for gathering and reporting the visco-elastic
2. Referenced Documents
properties of thermoplastic and thermosetting resins and com-
posite systems in the form of rectangular specimens molded
2.1 ASTM Standards:
directly or cut from sheets, plates, or molded shapes. The
D 618 Practice for Conditioning Plastics and Electrical
tensile data generated may be used to identify the thermome-
Insulating Materials for Testing
chanical properties of a plastics material or composition using
D 4000 Classification System for Specifying Plastic Mate-
a variety of dynamic mechanical instruments.
rials
1.2 This test method is intended to provide means for
D 4065 Practice for Determining and Reporting Dynamic
determining the modulus as a function of temperature of a wide
Mechanical Properties of Plastics
variety of plastics materials using nonresonant forced-vibration
D 4092 Terminology Relating to Dynamic Mechanical
techniques, in accordance with Practice D 4065. Plots of the
Measurements on Plastics
elastic (storage); loss (viscous); and complex moduli and tan
E 380 Practice for Use of the International System of Units
delta as a function of frequency, time, or temperature are
(SI) (the Modernized Metric System)
indicative of significant transitions in the thermomechanical
3. Terminology
performance of the polymeric material system.
1.3 This test method is valid for a wide range of frequencies,
3.1 Definitions—For definitions applicable to this test
typically from 0.01 to 100 Hz. method refer to Terminology D 4092.
1.4 Apparent discrepancies may arise in results obtained
4. Summary of Test Method
under differing experimental conditions. These apparent differ-
ences from results observed in another study can usually be 4.1 This test method covers the determination of the tensile
reconciled, without changing the observed data, by reporting in modulus of a plastics material using dynamic mechanical
full (as described in this test method) the conditions under techniques. A test specimen of rectangular cross section is
which the data were obtained. tested in dynamic tension. The specimen is gripped longitudi-
1.5 Due to possible instrumentation compliance, the data nally between two clamps. The specimen of known geometry
generated are intended to indicate relative and not necessarily is placed in mechanical linear tensile displacement at fixed
absolute property values. frequencies at either isothermal conditions or with a linear
1.6 Test data obtained by this test method is relevant and temperature increase. The elastic moduli or loss moduli, or
appropriate for use in engineering design. both, of the polymeric material system are measured in tension.
1.7 The values stated in SI units are to be regarded as the
NOTE 2—The particular method for measurement of the elastic and loss
standard. The values given in parentheses are for information
moduli and tan delta depends upon the individual instrument’s operating
only.
principles.
1.8 This standard does not purport to address all of the
5. Significance and Use
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5.1 This test method provides a simple means of character-
priate safety and health practices and determine the applica-
izing the thermomechanical behavior of plastics materials
using very small amounts of material. The data obtained may
be used for quality control, research and development, and
This test method is under the jurisdiction of ASTM Committee D-20 on Plastics
establishment of optimum processing conditions.
and is the direct responsibility of Subcommittee D20.10 on Mechanical Properties.
Current edition approved Oct. 10, 1995. Published December 1995. Originally
published as D 5026 – 89. Last previous edition D 5026 – 95.
2 3
Dynamic Mechanical Instrumentation is available from Rheometrics, Inc., Annual Book of ASTM Standards, Vol 08.01.
Piscataway, NJ 08854 and The Perkin-Elmer Corp., 761 Main Avenue, Norwalk, CT Annual Book of ASTM Standards, Vol 08.02.
06859-0256, [phone]. Annual Book of ASTM Standards, Vol 14.02.
D 5026
5.2 Dynamic mechanical testing provides a sensitive pendent and independent experimental parameters, such as
method for determining thermomechanical characteristics by force (stress), deformation (strain), frequency, and temperature.
measuring the elastic and loss moduli as a function of Temperature should be measurable with a precision of 61°C,
frequency, temperature, or time. Plots of moduli and tan delta frequency to 61 %, and force to 61%.
of a material versus temperature provide graphical representa- 7.2.6 Temperature Controller and Oven—A device for con-
tion indicative of functional properties, effectiveness of cure trolling the temperature, either by heating (in steps or ramps),
(thermosetting resin system), and damping behavior under cooling (in steps or ramps) or maintaining a constant specimen
specified conditions. environment, or a combination thereof. A temperature control-
5.3 This test method can be used to assess: ler should be sufficiently stable to permit measurement of
5.3.1 Modulus as a function of temperature, environmental chamber temperature to within 1°C.
5.3.2 Modulus as a function of frequency, 7.3 Nitrogen, or other inert gas supply, for purging purposes.
5.3.3 The effects of processing treatment, including orien-
8. Test Specimens
tation,
8.1 The test specimens may be cut from sheets, plates, or
5.3.4 Relative resin behavioral properties, including cure
molded shapes, or may be molded to the desired finished
and damping,
dimensions. Typically, the rectangular test specimen is 76 by
5.3.5 The effects of substrate types and
...