1、Designation:D6833 02(Reapproved 2007)An American National StandardStandard Test Method forAccelerated Pollutant Aging of Printing and Writing Paperby Pollution Chamber Exposure Apparatus1This standard is issued under the fixed designation D6833;the number immediately following the designation indica
2、tes the year oforiginal adoption or,in the 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.1.Scope1.1 This test method describes a laboratory procedure f
3、orthe exposure of printing and writing paper to common atmo-spheric pollutant gas at elevated levels of concentration topermit accelerated aging of such paper.1.2 This test method specifies the sample preparation andconditions of exposure required to obtain information on therelative stability of pa
4、per with regard to change in mechanicalstrength and optical properties brought about by exposure ofsuch paper to common atmospheric pollutant gas.1.3 This test method provides qualitative results regardingpaper stability and does not define the exact life expectancy fora given paper to reach a speci
5、fied set of strength or opticalproperties.The limit(s)of acceptability for a specified set ofproperties must be defined by each end user and will determinethe life expectancy of the paper to be tested.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its
6、use.It 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.2.Referenced Documents2.1 ASTM Standards:2D585 Practice for Sampling and Accepting a Single Lot ofPaper,Paperboard,Fi
7、berboard,and Related ProductD685 Practice for Conditioning Paper and Paper Productsfor TestingD1968 Terminology Relating to Paper and Paper ProductsD2176 Test Method for Folding Endurance of Paper by theM.I.T.TesterE122 Practice for Calculating Sample Size to Estimate,With Specified Precision,the Av
8、erage for a Characteristicof a Lot or Process2.2ASTM Adjunct:ASTM Paper Aging Research Program32.3TAPPI Test Method:T 524 Color of Paper and Paperboard(45/0 Geometry)43.Terminology3.1 DefinitionsDefinitions shall be in accordance withTerminology D1968 and the Dictionary of Paper.44.Summary of Test M
9、ethod4.1 In this test method,a specially designed pollutionchamber is used to expose sheets of paper that are separatelyhung in the chamber.Exposure of the paper is to an elevatedconcentration of nitrogen dioxide gas.The gas is circulateduniformly around the external surfaces of the paper in acontro
10、lled manner and for a specified period of time.The gasreacts chemically with the ingredients of the paper and causeschanges in its physical strength and in its optical properties.Bycomparing initial and final levels of these parameters againstspecified difference criteria,a measure of the stability
11、of paperstrength and optical properties is obtained.5.Significance and Use5.1 This test method will find use by parties concernedabout the influence of common atmospheric pollutant gases onthe permanence of the physical strength and optical propertiesof various printing and writing papers.5.2 The te
12、st will provide manufacturers,paper users andother interested parties with quantified rankings of paperstability that identify papers that are stable,moderately stableand unstable when exposed to common atmospheric pollutantgases over periods of time.5.3 The stability rankings may be used for defini
13、tion of thestability of paper to pollutant gas exposure,but will not definespecific periods of life expectancy,as the limits of acceptable1This test method is under the jurisdiction of ASTM Committee D06 on Paperand Paper Products and is the direct responsibility of Subcommittee D06.92 onStandard Do
14、cuments Relating to Paper and Paper Products.Current edition approved Dec.1,2007.Published December 2007.Originallyapproved in 2002.Last previous edition approved in 2002 as D6833 02.DOI:10.1520/D6833-02R07.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Se
15、rvice at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from ASTM International Headquarters.Order Adjunct No.ADJD06PAPERAGING.Formerly Research Report D061004.4Available from Technical Association of the
16、 Pulp and Paper Industry(TAPPI),15 Technology Parkway South,Norcross,GA 30092,http:/www.tappi.org.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.NOTICE:This standard has either been superseded and replaced by a new version or withdrawn.Contact ASTM International(www.astm.org)for the latest informationphysical strength and optical properties will be different forvarious users of a given paper.6.Apparatus6.1 Use a test chamber that is
