1、Designation:D20981(Reapproved 2012)Standard Specification forLampblack Pigment1This standard is issued under the fixed designation D209;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 parentheses
2、 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 Department of Defense.1.Scope1.1 This specification covers the pigment commerciallyknown as lampblack.The pigmen
3、t may be purchased in the dryform or as a paste in oil.2.Referenced Documents2.1 ASTM Standards:2D185 Test Methods for Coarse Particles in PigmentsD387 Test Method for Color and Strength of ChromaticPigments with a Mechanical MullerD1208 Test Methods for Common Properties of CertainPigments3.Composi
4、tion and Properties3.1 Dry PigmentThe pigment shall be made by burningoils or tars in such a manner as to form a deposit of carbon orsoot.It shall be high grade in every respect and shall be freefrom oil,greasy matter,and admixture of any other substance.The pigment shall conform to the following re
5、quirements:Ash,max,%0.5Acetone extract,max,%1.0Moisture and other volatile matter,max,%3.0Coarse particles,(total residue retained on a45-m(No.325)sieve),max,%0.5Tone when diluted with zinc oxideclear-blue-gray3.2 Paste in OilThe paste in oil shall be made bythoroughly grinding the specified pigment
6、 with linseed oil.Asreceived it shall not be caked in the container,and shall breakup readily in oil to form a smooth paint of brushing consis-tency.It shall mix readily in all proportions,without curdling,with linseed oil,turpentine,or volatile petroleum spirits,or anymixture of these substances.Th
7、e paste shall conform to thefollowing requirements:Pigment,min,%25Linseed oil,max,%75Moisture and other volatile matter,max,%0.7Coarse particles and skins(total residue retained on a45-m(No.325)sieve),max,%of the dry pigment1.03.3 The mass color and character of the tint and the tintingstrength form
8、ed by a mixture with a white pigment shall bewithin mutually agreed-upon limits of a standard acceptable toboth the purchaser and the seller.4.Sampling4.1 Two samples shall be taken at random from differentpackages from each lot,batch,days pack,or other unit ofproduction in a shipment.When no markin
9、gs distinguishingbetween units of production appear,samples shall be takenfrom different packages in the ratio of two samples for each10 000 lb(4540 kg),except that for shipments of less than10 000 lb two samples shall be taken.At the option of thepurchaser,the samples may be tested separately or af
10、terblending in equal quantities the samples from the sameproduction unit to form a composite sample.5.Test Methods5.1 Tests shall be conducted in accordance with the follow-ing test methods.Test procedures not covered by ASTM testmethods shall be mutually agreed upon between the purchaserand the sel
11、ler.5.2 Coarse ParticlesTest Methods D185.5.3 Pigment,Linseed Oil,and Moisture and Other VolatileMatter in Paste in OilTest Methods D1208.5.4 Mass Color and Tinting StrengthTest Method D387.6.Keywords6.1 carbon;lampblack;linseed oil;pigment;soot1This specification is under the jurisdiction of ASTM C
12、ommittee D01 on Paintand Related Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.31 on Pigment Specifications.Current edition approved Nov.1,2012.Published November 2012.Originallyapproved in 1924.Last previous edition approved in 2007 as D209 81(2007).DOI:10.
13、1520/D0209-81R12.2For 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 website.Copyright ASTM International,100 Barr Harbor Driv
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