1、Designation:D120316Standard 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 and health practices and determine the applica-bility of regulatory limitations prior to use.NOTE1This standard and ISO 176 address the same subject matter,but differ in technical content.2.Referenced Documents2.1 AS
7、TM Standards:2D618 Practice for Conditioning Plastics for TestingD883 Terminology Relating to PlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method2.2 Other Documents:ISO 176 Determination
8、of the Loss of Plasticizers fromPlastics by the Activated Carbon Method33.Terminology3.1 DefinitionsDefinitions are in accordance with Termi-nologies D883 and D1600 unless otherwise indicated.4.Significance and Use4.1 The test methods are intended to be rapid empirical testswhich have been found to
9、be useful in the relative comparisonof materials having the same 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 variou
10、s plasticmaterials shall be determined by the user.5.Apparatus5.1 BalanceAn accurate analytical balance,equipped withClass S weights or better.5.2 Oven or BathA thermostatically controlled oven orbath capable of maintaining the temperature to within 61C ofthe test temperature,which normally will be
11、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 measuring the thickness of
12、 the testspecimens.1These test methods are under the jurisdiction of ASTM Committee D20 onPlastics and are the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials(Section D20.15.11 on Plasticizers).Current edition approved April 1,2016.Published April 2016.Originallyapproved in 19
13、52.Last previous edition approved in 2010 as D1203 10.DOI:10.1520/D1203-16.2For 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 standards Document Summary page onthe ASTM
14、 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 Box C700,West Conshohocken,PA 19428-2959.United Sta
15、tes1 5.5 Metal Cages(for Test Method B)Wire cages con-structed from approximately 30-mesh bronze gauze,in cylin-drical form,having a diameter of 60 mm and a height of 6 mm,formed by soldering a strip of gauze at right angles to theperiphery of a disk of bronze gauze.One of the bases acts as alid.5.6
16、 150 mL Beaker graduated in 10 mL intervals.6.Material6.1 Activated Carbon,614MeshIt has been found thatdifferent types and grades of activated carbon give differingresults,thus making it necessary for the purchaser and theseller to agree on the same type and grade in order to obtainconcordant results.Care shall be taken that an airtight storagecontainer is used for the activated carbon and that freshmaterial is used for each test.The activated carbon shall bescreened through a 14-mesh screen im
