1、Designation:D149913Standard Practice forFiltered Open-Flame Carbon-Arc Exposures of Plastics1This standard is issued under the fixed designation D1499;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number
2、 in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This practice covers specific procedures and test condi-tio
3、ns that are applicable for exposure of plastics in filteredopen-flame carbon-arc devices conducted in accordance withPractices G151 and G152.This practice also covers thepreparation of test specimens,the test condition suited forplastics,and the evaluation of test results.1.2 This practice does not
4、cover enclosed carbon-arc expo-sures of plastics,which had been allowed in Practice D1499.Enclosed carbon-arc exposures of plastics are described inPractice D6360,and in G153,which gives requirements forexposing nonmetallic materials in enclosed carbon-arc devices.1.3 The values stated in SI units a
5、re to be regarded asstandard.The values in parentheses are given for informationonly.1.4 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 establish appro-priate safety and health practices and d
6、etermine the applica-bility of regulatory limitations prior to use.NOTE1This practice is technically equivalent to ISO 4892-4.2.Referenced Documents2.1 ASTM Standards:2D3980 Practice for Interlaboratory Testing of Paint andRelated Materials(Withdrawn 1998)3D5870 Practice for Calculating Property Ret
7、ention Index ofPlasticsD6360 Practice for Enclosed Carbon-Arc Exposures of Plas-ticsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodG113 Terminology Relating to Natural and Artificial Weath-ering Tests of Nonmetallic MaterialsG141 Guide for Addressing
8、Variability in Exposure Testingof Nonmetallic MaterialsG147 Practice for Conditioning and Handling of Nonmetal-lic Materials for Natural and Artificial Weathering TestsG151 Practice for Exposing Nonmetallic Materials inAccel-erated Test Devices that Use Laboratory Light SourcesG152 Practice for Oper
9、ating Open Flame Carbon Arc LightApparatus for Exposure of Nonmetallic MaterialsG153 Practice for Operating Enclosed Carbon Arc LightApparatus for Exposure of Nonmetallic MaterialsG169 Guide for Application of Basic Statistical Methods toWeathering Tests2.2 ISO Standard:4ISO 4892-4 PlasticsMethods o
10、f Exposure to LaboratoryLight SourcesPart 4,Open-Flame Carbon Arc Lamp3.Terminology3.1 The definitions in Terminology G113 are applicable tothis practice.4.Significance and Use4.1 The ability of a plastic material to resist deterioration ofits electrical,mechanical,and optical properties caused byex
11、posure to light,heat,and water can be very significant formany applications.This practice is intended to induce propertychanges associated with end-use conditions,including theeffects of sunlight,moisture,and heat.The exposure used inthis practice is not intended to simulate the deterioration caused
12、by localized weather phenomena,such as,atmosphericpollution,biological attack,and saltwater exposure.4.2 CautionsVariation in results may be expected whenoperating conditions are varied within the accepted limits ofthis practice.Therefore,no reference to the use of this practiceshall be made unless
13、accompanied by a report prepared inaccordance with Section 9 that describes the specific operating1This practice is under the jurisdiction ofASTM Committee D20 on Plastics andis the direct responsibility of Subcommittee D20.50 on Durability of Plastics.Current edition approved July 15,2013.Published
14、 August 2013.Originallyapproved in 1950.Last previous edition approved in 2005 as D1499-05.DOI:10.1520/D1499-13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the stand
15、ards 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.*A Summary of Changes section appears at the end of this standardCop
16、yright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 conditions used.Refer to Practice G151 for detailed informa-tion on the caveats applicable to use of results obtained inaccordance with this practice.NOTE2Additional information on sources of variability and onstrategies for addressing variability in the design,execution,and dataanalysis of laboratory-accelerated exposure tests is found in Guide G141.4.2.1 The spectral power distribution of
