1、Designation:D436413(Reapproved 2022)1Standard Practice forPerforming Outdoor Accelerated Weathering Tests ofPlastics Using Concentrated Sunlight1This standard is issued under the fixed designation D4364;the number immediately following the designation indicates the year oforiginal adoption or,in the
2、 case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEReapproved with editorial changes in January 2022.1.Scope*1.1 This practice covers the use of Fresn
3、el-reflecting con-centrators that use the sun as a source of ultraviolet(UV)andlonger wavelength radiation.Such devices are used in theoutdoor accelerated exposure testing of plastics.1.2 This practice provides a procedure for performing out-door accelerated exposure testing of plastics using a Fres
4、nel-reflector outdoor accelerated weathering test machine.Theapparatus is described herein and in Practice G90 morecompletely.1.3 This practice is applicable to a range of plastic materialsincluding,but not limited to,plastic films,sheets,laminates,and extruded and molded products in a variety of sh
5、apes andsizes,as specified in 8.2 and 8.3.1.4 This practice describes test conditions that attempt tosimulate plastics exposures in desert and subtropical climates.Specimen preparation,property testing procedures,and theevaluation of results are covered in existing test methods orspecifications for
6、specific materials.1.5 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to
7、 establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.Specific precautionary statements are given in Section 7.NOTE1This standard is equivalent to ISO 877-3:2009.1.7 This international standard was developed in accor
8、-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Sta
9、ndards:2D859 Test Method for Silica in WaterD883 Terminology Relating to PlasticsD1435 Practice for Outdoor Weathering of PlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD1898 Practice for Sampling of Plastics(Withdrawn 1998)3D4141/D4141M Practice for Conducting Black Box andSola
10、r Concentrating Exposures of CoatingsD4517 Test Method for Low-Level Total Silica in High-Purity Water by Flameless Atomic Absorption Spectros-copyE772 Terminology of Solar Energy ConversionE824 Test Method for Transfer of Calibration From Refer-ence to Field RadiometersG7/G7M Practice for Natural W
11、eathering of MaterialsG24 Practice for Conducting Exposures to Daylight FilteredThrough GlassG90 Practice for Performing Accelerated Outdoor Weather-ing of Materials Using Concentrated Natural SunlightG113 Terminology Relating to Natural and Artificial Weath-ering Tests of Nonmetallic Materials2.2 I
12、SO Standard:4ISO 877-3:2009 PlasticsMethods of exposure to solarradiationPart 3:Intensified weathering using concen-trated solar radiation1This practice is under the jurisdiction ofASTM Committee D20 on Plastics andis the direct responsibility of Subcommittee D20.50 on Durability of Plastics.Current
13、 edition approved Jan.1,2022.Published February 2022.Originallyapproved in 1984.Last previous edition approved in 2013 as D4364 13.DOI:10.1520/D4364-13R22E01.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMS
14、tandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.*A
15、Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established
16、in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.13.Terminology3.1 DefinitionsFor definitions of technical terms pertain-ing to plastics used in this practice,see Terminologies D883,D1600,E772,and G113(for weathering terminology).4.Significance and Use4.1 This practice involves the concentration of sunlight by asystem of plane mirrors,arranged to simulate a parab
