1、Designation:D302284(Reapproved 2011)Standard Test Method forColor and Strength of Color Pigments by Use of a MiniatureSandmill1This standard is issued under the fixed designation D3022;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,
2、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 covers the determination,through theuse of a miniature sandmill,of the color and strength of d
3、rycolor pigments.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to
4、establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.For specific hazardstatements,see Section 6.2.Referenced Documents2.1 ASTM Standards:2C778 Specification for SandD235 Specification for Mineral Spirits(Petroleum Spirits)(Hydroc
5、arbon Dry Cleaning Solvent)D523 Test Method for Specular GlossD2244 Practice for Calculation of Color Tolerances andColor Differences from Instrumentally Measured ColorCoordinatesE97 Method of Test for Directional Reflectance Factor,45-Deg 0-Deg,of Opaque Specimens by Broad-BandFilter Reflectometry(
6、Withdrawn 1991)3E308 Practice for Computing the Colors of Objects by Usingthe CIE System2.2 Federal Specification:4TT-R-266 Resin,Alkyd;Solutions2.3 ASTM Adjuncts:Miniature sandmill53.Significance and Use3.1 This test method is a way of testing the color andstrength of pigments by use of a miniature
7、 sandmill.Itcorrelates well with industrial practice and is used for routinequality control.4.Apparatus4.1 Balance,sensitive to 10 mg with a capacity in excess of300 g.4.2 Miniature SandmillA laboratory disperser equippedwith a 41-mm(158-in.)diameter fiber rotary disk impellerrotating at a constant
8、8000 r/min under varying load condi-tions.The shaft upon which the impeller is mounted shall besufficiently balanced so no whip of the shaft is observedbetween 0 and 10 000 r/min.4.3 Cylinder,100-mL graduated.4.4 Beakers,200-mL tall-form,stainless steel,or polyethyl-ene(approximately 60-mm inside di
9、ameter).4.5 Strainers,paper cone,disposable,about 40 mesh.1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.26 on Optical Properties.Current edition approved June 1,2011.Publis
10、hed June 2011.Originallyapproved in 1972.Last previous edition approved in 2005 as D3022 84(2005).DOI:10.1520/D3022-84R11.2For 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
11、 the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from Standardization Documents Order Desk,DODSSP,Bldg.4,SectionD,700RobbinsAve.,Philadelphia,PA19111-5098,http:/dodssp.daps.dla.mil.5Drawings are ava
12、ilable from ASTM International Headquarters.Order AdjunctADJD3022.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.6 Fiber Disks,41-mm(158-in.)diameter phenoliclaminated,6 mm(14in.)thick.64.7 Paper Charts,smooth,surface-coated,the surfac
13、e ofwhich should be impervious to paint liquids.74.8 Film Applicator,with an 200-m(8-mil)clearance atleast 75 mm(3 in.)wide.4.9 Color-Measuring Instruments,as defined in TestMethod E97 or Practice E308.5.Materials5.1 Samples of standard reference pigments as agreed uponbetween the purchaser and the
14、seller.5.2 Standard Sand8Regular 20 to 30-mesh(850 to 600-m)cement testing sand conforming to Specification C778.The sand shall be screened to remove all sub 30-mesh particles.Twenty to thirty-mesh glass beads may be used instead ofsand.95.3 Grinding VehicleA long oil alkyd10meeting U.S.Fed.Spec.TT-
15、R-266 Type 1-A reduced to 47%solids with mineralspirits conforming to Specification D235(2 parts alkyd and 1part mineral spirits by weight).6The sole source of supply of the disks known to the committee at this time isGardner/BYK-Gardner,Inc.,Gardner Laboratory,2435 Linden Lane,Silver Spring,MD 2091
16、0.If you are aware of alternative suppliers,please provide this informationto ASTM International Headquarters.Your comments will receive careful consid-eration at a meeting of the responsible technical committee,1which you may attend.7The sole source of supply of the white and black charts known to the committeeat this time is the Leneta Co.,15 Whitney Rd.,Mahwah,NJ 07430.If you are awareof alternative suppliers,please provide this information to ASTM InternationalHeadquarters.Your comments will
