1、Designation:D220301(Reapproved 2018)Standard Test Method forStaining from Sealants1This standard is issued under the fixed designation D2203;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parent
2、heses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers a laboratory procedure fordetermining whether a sample of sealant will cause staining ofthe substrate when in the contact with maso
3、nry,concrete,orstone(marble,limestone,sandstone,granite,etc.).1.2 The values stated in SI(metric)units are to be regardedas the standard.The values given in parentheses are providedfor information only.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its
4、 use.It 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.NOTE1Currently there is no ISO standard similar to this test method.1.4 This international standard wa
5、s 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)Committee.2.Referenced D
6、ocuments2.1 ASTM Standards:2C510 Test Method for Staining and Color Change of Single-or Multicomponent Joint SealantsC717 Terminology of Building Seals and Sealants3.Terminology3.1 DefinitionsRefer to Terminology C717 for definitionsof the following terms used in this test method:compound,sealant,su
7、bstrate.4.Significance and Use4.1 Staining of a building is an aesthetically undesirableoccurrence.This test method evaluates the likelihood of asealant causing an early stain on a porous substrate,when thestain is caused by gross exudation from the sealant.This testmethod does not predict staining
8、caused by other factors.4.2 See also Test Method C510.5.Apparatus and Materials5.1 Convection Oven,having a temperature controlled at104.5 6 3C(220 6 5F).5.2 Brass Ring,19 mm(34in.)inside diameter,19 mm(34in.)high,walls at one end beveled to a minimum diameter.5.3 Filter Paper,ten sheets,high-grade,
9、rapid,qualitative 9cm in diameter.35.4 Aluminum Foil,household-type,25.4 mm(1 in.)square.5.5 Weight,300-g.5.6 Spatula,small,thin,steel.5.7 Glass Plate,at least 100 by 100 mm(4 by 4 in.).5.8 Desiccator,with drying agent.6.Sampling6.1 Take the test specimen from a previously unopenedcontainer and thor
10、oughly mix before using,if required forhomogeneity.7.Conditioning7.1 Condition the sample in a closed container for at least 5h at 23 6 2C(73.4 6 3.6F).8.Procedure8.1 Dry the filter papers for 5 to 8 h in an oven maintainedat 104.5 6 3C(220 6 5.4F).At the end of the drying period,remove from the ove
11、n and store in a desiccator until cool.8.2 Remove ten filter papers from the desiccator,staplethem together,and place them on a glass plate.Set the brassring with beveled edge down on the center of the filter papers.1This test method is under the jurisdiction ofASTM Committee C24 on BuildingSeals an
12、d Sealants and is the direct responsibility of Subcommittee C24.20 onGeneral Test Methods.Current edition approved Jan.1,2018.Published January 2018.Originallyapproved in 1963.Last previous edition approved in 2011 as D2203 01(2011).DOI:10.1520/D2203-01R18.2For referenced ASTM standards,visit the AS
13、TM 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 website.3This test method is based on the use of Whatman No.1 filter paper,manufactured by Whatman,Inc.,9 Bridewell P
14、lace,Clifton,NJ 07073.Copyright 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 in the Decision on Principles for theDev
15、elopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 Fill the ring flush with thoroughly mixed sealant,taking care toincorporate as little air as possible with the compound.Place a25.4-mm(1-in.)square piece
16、of aluminum foil on top of thering,and the 300-g weight on top of that.8.3 Allow the filled ring to stand for 72 h at 23 6 2C(73.46 3.6F).Then slide a spatula under the brass ring and removethe ring and compound.Hold the top filter paper up to the lightwith a glass plate under it and,with a sharp pencil,mark themaximum and minimum diameters of the stain.Measure thesediameters to the nearest 0.5 mm.Subtract 19(diameter of ringin millimetres)from the average of the two diameters anddivide by 2.Rec
