1、Designation:D120321Standard Test Methods forVolatile Loss from Plastics Using Activated CarbonMethods1This standard is issued under the fixed designation D1203;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision
2、.A number 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 These test methods cover the determination of vola
3、tileloss from a plastic material under defined conditions of timeand temperature,using activated carbon as the immersionmedium.1.2 Two test methods are covered as follows:1.2.1 Test Method A,Direct Contact with ActivatedCarbonIn this test method the plastic material is in directcontact with the carb
4、on.This test method is particularly usefulin the rapid comparison of a large number of plastic specimens.1.2.2 Test Method B,Wire CageThis test method pre-scribes the use of a wire cage,which prevents direct contactbetween the plastic material and the carbon.By eliminating thedirect contact,the migr
5、ation of the volatile components to thesurrounding carbon is minimized and loss by volatilization ismore specifically measured.1.3 The values stated in SI units are to be regarded as thestandard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It
6、 is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.NOTE1This standard and ISO 176 address the same subject matter,but differ in technical content.1.5 This inter
7、national standard was developed in accor-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)Comm
8、ittee.2.Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD883 Terminology Relating to PlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsE456 Terminology Relating to Quality and StatisticsE691 Practice for Conducting an Interlaboratory Study
9、 toDetermine the Precision of a Test MethodE2935 Practice for Conducting Equivalence Tests for Com-paring Testing Processes2.2 Other Documents:ISO 176 Determination of the Loss of Plasticizers fromPlastics by the Activated Carbon Method33.Terminology3.1 DefinitionsFor definitions of terms in this te
10、st methodrelating to plastics,refer to Terminology D883.For abbrevia-tions used in this test method,refer to Terminology D1600.4.Significance and Use4.1 The test methods are intended to be rapid empirical testswhich have been found to be useful in the relative comparisonof materials having the same
11、nominal thickness.NOTE2When the plastic material contains plasticizer,loss from theplastic is assumed to be primarily plasticizer.The effect of moisture isconsidered to be negligible.4.2 Correlation with ultimate application for various plasticmaterials shall be determined by the user.5.Apparatus5.1
12、 BalanceAn accurate analytical balance,equipped withClass S weights or better.1These test methods are under the jurisdiction of ASTM Committee D20 onPlastics and are the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials(Section D20.15.07 on Vinyls).Current edition approved May 1
13、,2021.Published May 2021.Originallyapproved in 1952.Last previous edition approved in 2020 as D1203 20.DOI:10.1520/D1203-21.2For 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
14、to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Bo
15、x C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the W
16、orld Trade Organization Technical Barriers to Trade(TBT)Committee.15.2 Oven or BathA thermostatically controlled oven orbath capable of maintaining the temperature to within 61C ofthe test temperature,which normally will be in the range from50 to 150C.5.3 ContainersMetal cans or wide-mouth screw-top jars,of cylindrical form,approximately 100 mm in diameter andapproximately12L in capacity.NOTE3Pint paint cans work well.5.4 MicrometerA micrometer capable of measuring to thenearest 0.0025 mm for me
