Standard Practice for Outdoor Weathering of Plastics

SCOPE
1.1 This practice is intended to cover procedures for the exposure of plastic materials to weather.  Note 1-See Practice G24 for aging under glass.
1.2 This practice is limited to the method by which the material is to be exposed and the general procedure to be followed. It is intended for use with finished articles of commerce as well as with all sizes and shapes of test specimens.
1.3 Means of evaluation of the effects of weathering will depend on the intended use for the test material.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 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 2-This standard and ISO 877.2-1991, Method A, are technically equivalent.

General Information

Status
Historical
Publication Date
09-Nov-1999
Technical Committee
Current Stage
Ref Project

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D1435–99
Standard Practice for
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Outdoor Weathering of Plastics
This standard is issued under the fixed designation D 1435; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope E 913 Method for Calibration of Reference Pyranometers
5
with Axis Vertical by the Shading Method
1.1 This practice is intended to cover procedures for the
E 941 Test Method for Calibration of Reference Pyranom-
exposure of plastic materials to weather.
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eters with Axis Tilted by the Shading Method
NOTE 1—See Practice G 24 for aging under glass.
G 7 Practice for Atmospheric Environmental Exposure
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1.2 This practice is limited to the method by which the Testing of Nonmetallic Materials
material is to be exposed and the general procedure to be G 24 Practice for Conducting Exposures to Daylight Fil-
5
followed. It is intended for use with finished articles of tered Through Glass
commerce as well as with all sizes and shapes of test G 84 Practice for Measurement of Time-of Wetness on
specimens. SurfacesExposedtoWettingConditionsasinAtmospheric
6
1.3 Means of evaluation of the effects of weathering will Corrosion Testing
depend on the intended use for the test material. G 113 Terminology Relating to Natural and Artificial
5
1.4 The values stated in SI units are to be regarded as the Weathering Tests of Nonmetallic Materials
standard. The values given in parentheses are for information G 141 Guide forAddressingVariability in ExposureTesting
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only. on Nonmetallic Materials
1.5 This standard does not purport to address all of the G 147 Practice for Conditioning and Handling of Nonme-
5
safety concerns, if any, associated with its use. It is the tallicMaterialsforNaturalandArtificialWeatheringTests
responsibility of the user of this standard to establish appro- 2.2 ISO Standard:
priate safety and health practices and determine the applica- ISO 877.2-1991 MethodA, Methods for Exposure to Direct
bility of regulatory limitations prior to use. Weathering, to Weathering Using Glass-Filtered Daylight,
7
and to Intensified Weathering Using Fresnel Mirrors
NOTE 2—This standard and ISO 877.2-1991, MethodA, are technically
equivalent.
3. Terminology
2. Referenced Documents 3.1 Definitions—For definitions of technical terms pertain-
ing to plastics used in this practice, see Terminologies D 883,
2.1 ASTM Standards:
2 D 1600, G 113, and E 772.
D 883 Terminology Relating to Plastics
D 1600 Terminology for Abbreviated Terms Relating to
4. Significance and Use
2
Plastics
3 4.1 Tests conducted in accordance with this practice are
D 1898 Practice for Sampling of Plastics
4 used to evaluate the stability of plastic materials when they are
E 772 Terminology Relating to Solar Energy Conversion
exposed outdoors.The relative durability of plastics in outdoor
E 824 Test Method for Transfer of Calibration from Refer-
5
use can be very different depending on the location of the
ence to Field Radiometers
exposure because of differences in ultraviolet (UV) radiation,
time of wetness, temperature, pollutants, and other factors. It
cannot be assumed, therefore, that results from one exposure in
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This practice is under the jurisdiction of ASTM Committee D-20 on Plastics
a single location will be useful for determining relative
and is the direct responsibility of Subcommittee D20.50 on Permanence Properties.
durabilityinadifferentlocation.Exposuresinseverallocations
Current edition approved Nov. 10, 1999. Published February 2000. Originally
published as D 1435 – 56 T. Last previous edition D 1435 – 94.
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Annual Book of ASTM Standards, Vol 08.01.
3 6
Discontinued 1998. See 1998 Annual Book of ASTM Standards, Vol 08.01. Annual Book of ASTM Standards, Vol 03.02.
4 7
Annual Book of ASTM Standards, Vol 12.02. Available from American National Standards Institute, 11 W. 42nd St., 13th
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Annual Book of ASTM Standards, Vol 14.04. Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D1435
with different climates that represent a broad range of antici- 5.3.1 Most specimens under test will not be of an exact size
pated service conditions are recommended. for mounting directly on the frame. Specimen holders should
4.1.1 Because of year-to-year climatological variations, re- beusedtosupportthemanysizesofspecimensinvolvedinthis
sults from a single exposure test cannot be used to predict the testing. In no case shall the specimen holder c
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