ASTM D5208-14(2022)
(Practice)Standard Practice for Fluorescent Ultraviolet (UV) Exposure of Photodegradable Plastics
Standard Practice for Fluorescent Ultraviolet (UV) Exposure of Photodegradable Plastics
SIGNIFICANCE AND USE
4.1 Materials made from photodegradable plastics are intended to show relatively rapid deterioration of chemical, physical, and mechanical properties when exposed to light, heat, and water after fulfilling their intended purpose. This practice is intended to induce property changes associated with conditions that might be experienced when the material is discarded as litter, including the effects of sunlight, moisture, and heat. The exposure used in this practice is not intended to simulate the deterioration caused by localized weather phenomena such as atmospheric pollution, biological attack, and salt water exposure.
4.2 Cautions—Variation in results can be expected when operating conditions are varied within the accepted limits of this practice. Therefore, no reference to the use of this practice shall be made unless accompanied by a report prepared in accordance with Section 9 that describes the specific operating conditions used. Refer to Practice G151 for detailed information on the caveats applicable to use of results obtained in accordance with this practice.
Note 2: Additional information on sources of variability and on strategies for addressing variability in the design, execution and data analysis of laboratory accelerated exposure tests is found in Guide G141.
4.3 Exposure of a similar material of known performance (a control) at the same time as the test specimens provides a standard for comparative purposes. Use of a control to rank the stability of test materials greatly improves agreement between different laboratories.3,4 It is recommended that at least three replicates of each material evaluated be exposed to allow for statistical evaluation of results.
4.4 Test results will depend upon the care that is taken to operate the equipment in accordance with Practice G154. Significant factors include regulation of line voltage, temperature of the room in which the device operates, temperature control, and condition and age of the lamps, if ex...
SCOPE
1.1 This practice covers the specific procedures applicable for fluorescent Ultraviolet (UV) exposure of photodegradable plastics conducted in accordance with Practices G151 and G154. This practice also covers the preparation of test specimens and the evaluation of test results.
1.2 Practice D4329 covers fluorescent UV exposures of plastics intended for long term use in outdoor applications.
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Note 1: There is no known ISO equivalent to this standard.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D5208 − 14 (Reapproved 2022)
Standard Practice for
Fluorescent Ultraviolet (UV) Exposure of Photodegradable
1
Plastics
This standard is issued under the fixed designation D5208; 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 D5870 Practice for Calculating Property Retention Index of
Plastics
1.1 This practice covers the specific procedures applicable
E691 Practice for Conducting an Interlaboratory Study to
for fluorescent Ultraviolet (UV) exposure of photodegradable
Determine the Precision of a Test Method
plastics conducted in accordance with Practices G151 and
G113 Terminology Relating to Natural andArtificial Weath-
G154. This practice also covers the preparation of test speci-
ering Tests of Nonmetallic Materials
mens and the evaluation of test results.
G141 Guide for Addressing Variability in Exposure Testing
1.2 Practice D4329 covers fluorescent UV exposures of
of Nonmetallic Materials
plastics intended for long term use in outdoor applications.
G147 Practice for Conditioning and Handling of Nonmetal-
lic Materials for Natural and Artificial Weathering Tests
1.3 The values stated in SI units are to be regarded as
standard. The values given in parentheses are for information G151 Practice for Exposing Nonmetallic Materials inAccel-
erated Test Devices that Use Laboratory Light Sources
only.
G154 Practice for Operating Fluorescent Ultraviolet (UV)
1.4 This standard does not purport to address all of the
Lamp Apparatus for Exposure of Nonmetallic Materials
safety concerns, if any, associated with its use. It is the
G169 Guide for Application of Basic Statistical Methods to
responsibility of the user of this standard to establish appro-
Weathering Tests
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
3. Terminology
NOTE 1—There is no known ISO equivalent to this standard.
3.1 The definitions given in Terminology G113 are appli-
1.5 This international standard was developed in accor-
cable to this practice.
dance with internationally recognized principles on standard-
4. Significance and Use
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
4.1 Materials made from photodegradable plastics are in-
mendations issued by the World Trade Organization Technical
tended to show relatively rapid deterioration of chemical,
Barriers to Trade (TBT) Committee.
physical, and mechanical properties when exposed to light,
heat, and water after fulfilling their intended purpose. This
2. Referenced Documents
practice is intended to induce property changes associated with
2
conditions that might be experienced when the material is
2.1 ASTM Standards:
discarded as litter, including the effects of sunlight, moisture,
D3826 Practice for Determining Degradation End Point in
and heat. The exposure used in this practice is not intended to
Degradable Polyethylene and Polypropylene Using a Ten-
simulate the deterioration caused by localized weather phe-
sile Test
nomena such as atmospheric pollution, biological attack, and
D4329 Practice for Fluorescent Ultraviolet (UV) Lamp Ap-
salt water exposure.
paratus Exposure of Plastics
4.2 Cautions—Variation in results can be expected when
operating conditions are varied within the accepted limits of
1 this practice. Therefore, no reference to the use of this practice
ThispracticeisunderthejurisdictionofASTMCommitteeD20onPlasticsand
is the direct responsibility of Subcommittee D20.50 on Durability of Plastics.
shall be made unless accompanied by a report prepared in
Current edition approved July 1, 2022. Published July 2022. Originally approved
accordance with Section 9 that describes the specific operating
in 1991. Last previous edition approved in 2014 as D5208 - 14. DOI: 10.1520/
conditions used. Refer to Practice G151 for detailed informa-
D5208-14R22.
2
tion on the caveats applicable to use of results obtained in
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
accordance with this practice.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. NOTE 2—Additional information on sources of variability and on
*A Summary of Changes section appears at the end of this standard
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