ASTM D5510-94(2001)
(Practice)Standard Practice for Heat Aging of Oxidatively Degradable Plastics (Withdrawn 2010)
Standard Practice for Heat Aging of Oxidatively Degradable Plastics (Withdrawn 2010)
SCOPE
1.1 This practice is intended to define the exposure conditions of plastics at various temperatures when exposed solely to hot air for extended periods of time. Only the procedures for heat exposure are specified, not the test method or specimen. The effect of heat on any particular property may be determined by selection of the appropriate test method and specimen; however, it is recommended that Practice D 3826 be used to determine the embrittlement endpoint, which is defined as that point in the history of a material when 75 % of the specimens tested have a tensile elongation at break of 5 % or less at an initial strain rate of 0.1 mm/mm min.
1.2 This practice should be used as a guide for comparing the thermal-aging characteristics of materials as measured by the change in some property of interest (that is, embrittlement by means of loss of elongation). It is very similar to Practice D3045 but is intended for use in evaluating plastics designed to be oxidized easily after use. The exposure times used for this practice will be significantly shorter than those used for Practice D3045.
1.3 The type of oven used can affect the results obtained from this practice. The user can use one of two methods for oven exposure. The results based on one method should not be mixed with those based on the other.
1.3.1 Procedure A: Gravity-Convection Oven--Recommended for film specimens having a nominal thickness not greater than 0.25 mm (0.010 in.).
1.3.2 Procedure B: Forced-Ventilation Oven--Recommended for specimens having a nominal thickness greater than 0.25 mm (0.010 in.).
1.4 This practice recommends procedures for comparing the thermal aging characteristics of materials at a single temperature. Recommended procedures for determining the thermal aging characteristics of a material at a series of temperatures for the purpose of estimating time to a defined property change at some lower temperature are also described. This practice does not predict thermal aging characteristics where interactions between stress, environment, temperature, and time control failure.
1.5 The values stated in SI units are to be regarded as 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.
Note 1--There is no ISO standard that is equivalent to this standard.
WITHDRAWN RATIONALE
This practice was intended to define the exposure conditions of plastics at various temperatures when exposed solely to hot air for extended periods of time. Only the procedures for heat exposure were specified, not the test method or specimen. The effect of heat on any particular property may be determined by selection of the appropriate test method and specimen; however, it is recommended that Practice D3826 be used to determine the embrittlement endpoint, which is defined as that point in the history of a material when 75 % of the specimens tested have a tensile elongation at break of 5 % or less at an initial strain rate of 0.1 mm/mm min.
Formerly under the jurisdiction of Committee D20 on Plastics, this practice was withdrawn in February 2010 in accordance with subsection 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.
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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:D5510–94 (Reapproved 2001)
Standard Practice for
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Heat Aging of Oxidatively Degradable Plastics
This standard is issued under the fixed designation D5510; 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 1.5 The values stated in SI units are to be regarded as the
standard.
1.1 This practice is intended to define the exposure condi-
1.6 This standard does not purport to address all of the
tionsofplasticsatvarioustemperatureswhenexposedsolelyto
safety concerns, if any, associated with its use. It is the
hot air for extended periods of time. Only the procedures for
responsibility of the user of this standard to establish appro-
heat exposure are specified, not the test method or specimen.
priate safety and health practices and determine the applica-
The effect of heat on any particular property may be deter-
bility of regulatory limitations prior to use.
mined by selection of the appropriate test method and speci-
men; however, it is recommended that Practice D3826 be used
NOTE 1—There is no ISO standard that is equivalent to this standard.
to determine the embrittlement endpoint, which is defined as
2. Referenced Documents
that point in the history of a material when 75 % of the
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specimens tested have a tensile elongation at break of 5 % or
2.1 ASTM Standards:
less at an initial strain rate of 0.1 mm/mm min.
D618 Practice for Conditioning Plastics for Testing
1.2 This practice should be used as a guide for comparing
D883 Terminology Relating to Plastics
the thermal-aging characteristics of materials as measured by
D1870 Practice for Elevated Temperature Aging Using a
the change in some property of interest (that is, embrittlement
Tubular Oven
by means of loss of elongation). It is very similar to Practice
D2436 NO TITLE
D3045butisintendedforuseinevaluatingplasticsdesignedto
D3045 Practice for Heat Aging of Plastics Without Load
be oxidized easily after use. The exposure times used for this
D3593 NO TITLE
practice will be significantly shorter than those used for
D3826 Practice for Determining Degradation End Point in
Practice D3045.
Degradable Polyethylene and Polypropylene Using a Ten-
1.3 The type of oven used can affect the results obtained
sile Test
from this practice. The user can use one of two methods for
E145 Specification for Gravity-Convection and Forced-
oven exposure. The results based on one method should not be Ventilation Ovens
mixed with those based on the other.
3. Terminology
1.3.1 Procedure A: Gravity-Convection Oven—
Recommended for film specimens having a nominal thickness 3.1 Definitions—The definitions used in this practice are in
not greater than 0.25 mm (0.010 in.).
accordance with Terminology D883.
1.3.2 Procedure B: Forced-Ventilation Oven—
4. Significance and Use
Recommended for specimens having a nominal thickness
greater than 0.25 mm (0.010 in.). 4.1 The correlation of results obtained from this practice to
1.4 Thispracticerecommendsproceduresforcomparingthe actual disposal environments (for example, composting) has
thermal aging characteristics of materials at a single tempera- not been determined, and, as such, the results should be used
ture. Recommended procedures for determining the thermal only for comparative and ranking purposes.
aging characteristics of a material at a series of temperatures 4.2 Degradable plastics exposed to heat may be subject to
for the purpose of estimating time to a defined property change many types of physical and chemical changes. The severity of
at some lower temperature are also described. This practice the exposures in both time and temperature determines the
does not predict thermal aging characteristics where interac- extent and type of change that occurs. Short exposure times at
tions between stress, environment, temperature, and time elevated temperatures generally serve to shorten the induction
control failure. period of oxidatively degradable plastics during which the
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ThispracticeisunderthejurisdictionofASTMCommitteeD20onPlasticsand
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isthedirectresponsibilityofSubcommitteeD20.96onEnvironmentallyDegradable For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Plastics. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved Feb. 15, 1994. Published April 1994. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
D5510-94R01. the ASTM website.
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