ASTM D4329-99
(Practice)Standard Practice for Fluorescent UV Exposure of Plastics
Standard Practice for Fluorescent UV Exposure of Plastics
SCOPE
1.1 This practice covers the procedures applicable when Practice G53 is employed for exposure testing of plastics.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.3 This standard does not purport to address all of the safety problems, 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-This standard and ISO/DIS 4892 are related in title and in technical content. However, the user should note that there may be significant technical differences. ISO/DIS 4892 permits the use of different instruments and different procedures among users.
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Standards Content (Sample)
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Designation:D4329–99
Standard Practice for
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Fluorescent UV Exposure of Plastics
This standard is issued under the fixed designation D 4329; 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* Weathering Tests of Nonmetallic Materials
G 141 Guide forAddressingVariability in ExposureTesting
1.1 This practice covers specific procedures and test condi-
on Nonmetallic Materials
tionsthatareapplicableforfluorescentUVexposureofplastics
G 147 Practice for Conditioning and Handling of Nonme-
conducted in accordance with Practices G 151 and G 154.This
tallic Materials for Natural andArtificial Weathering Tests
practice also covers the preparation of test specimens, the test
G 151 Practice for Exposing Nonmetallic Materials in Ac-
conditions best suited for plastics, and the evaluation of test
celerated Test Devices That Use Laboratory Light Sources
results.
G 154 Practice for Operating Fluorescent Light Apparatus
NOTE 1—Previous versions of this practice referenced fluorescent UV
for UV Exposure of Nonmetallic Materials
devices described by Practice G 53, which described very specific
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2.2 ISO Standard:
equipment designs. Practice G 53 is being replaced by Practice G 151,
ISO 4892-3 Plastics—Methods of Exposure to Laboratory
which describes performance criteria for all exposure devices that use
Light Sources — Part 3, Fluorescent UV Lamps
laboratory light sources and by Practice G 154, which gives requirements
for exposing nonmetallic materials in fluorescent UV devices. Practice
3. Terminology
G 53 will be balloted for withdrawal before December 2000.
3.1 The definitions in Terminology G 113 are applicable to
1.2 ThevaluesstatedinSIunitsareberegardedasstandard.
this practice.
The values given in parentheses are for information only.
1.3 This standard does not purport to address all of the
4. Significance and Use
safety concerns, if any, associated with its use. It is the
4.1 The ability of a plastic material to resist deterioration of
responsibility of the user of this standard to establish appro-
its electrical, mechanical, and optical properties caused by
priate safety and health practices and determine the applica-
exposure to light, heat, and water can be very significant for
bility of regulatory limitations prior to use.
many applications.This practice is intended to induce property
NOTE 2—This practice is technically equivalent to ISO 4892-3.
changes associated with end-use conditions, including the
effects of sunlight, moisture, and heat. The exposure used in
2. Referenced Documents
thispracticeisnotintendedtosimulatethedeteriorationcaused
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2.1 ASTM Standards:
by localized weather phenomena, such as, atmospheric pollu-
D 3980 Practice for Interlaboratory Testing of Paint and
tion, biological attack, and saltwater exposure.
Related Materials
4.2 Caution—Variation in results may be expected when
D 5870 Practice for Calculating Property Retention Index
operating conditions are varied within the accepted limits of
of Plastics
this practice. Therefore, no reference to the use of this practice
E 691 Practice for Conducting an Interlaboratory Study to
should be made unless accompanied by a report prepared in
Determine the Precision of a Test Method
accordance with Section 8 that describes the specific operating
G 53 Practice for Operating Light- and Water-Exposure
conditions used. Refer to Practice G 151 for detailed informa-
Apparatus (Fluorescent UV-CondensationType) for Expo-
tion on the caveats applicable to use of results obtained in
sure of Nonmetallic Materials
accordance with this practice.
G 113 Terminology Relating to Natural and Artificial
NOTE 3—Additional information on sources of variability and on
strategies for addressing variability in the design, execution, and data
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analysis of laboratory-accelerated exposure tests is found in Guide G 141.
ThispracticeisunderthejurisdictionofASTMCommitteeD20onPlasticsand
is the direct responsibility of Subcommittee D20.50 on Permanence Properties.
4.3 Reproducibility of test results between laboratories has
Current edition approved Jan. 10, 1999. Published April 1999. Originally
been shown to be good when the stability of materials is
published D 4329 – 84. Last previous edition D 4329 – 92.
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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
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Standards volume information, refer to the standard’s Document Summary page on Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036.
*A Summary of Ch
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