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    ASTM D605-1982(2007) Standard Specification for Magnesium Silicate Pigment (Talc)《硅酸镁颜料(滑石)》.pdf

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    ASTM D605-1982(2007) Standard Specification for Magnesium Silicate Pigment (Talc)《硅酸镁颜料(滑石)》.pdf

    1、Designation: D 605 82 (Reapproved 2007)Standard Specification forMagnesium Silicate Pigment (Talc)1This standard is issued under the fixed designation D 605; 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 (e) 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 pigments that consist s

    3、ubstan-tially of natural hydrous magnesium silicate, and is restricted tothose minerals that conform to the chemical limits prescribedherein and can be suitably processed to what is commerciallyknown as paint pigment quality.1.2 The values stated in SI units are to be regarded as thestandard. The va

    4、lues given in parentheses are for informationonly.1.3 The following hazard caveat applies to the test methodportion of this specification only. This standard does notpurport to address all of the safety concerns, if any, associatedwith its use. It is the responsibility of the user of this standardto

    5、 establish appropriate safety and health practices anddetermine the applicability of regulatory limitations prior touse.2. Referenced Documents2.1 ASTM Standards:2D 280 Test Methods for Hygroscopic Moisture (and OtherMatter Volatile Under the Test Conditions) in PigmentsD 281 Test Method for Oil Abs

    6、orption of Pigments bySpatula Rub-outD 562 Test Method for Consistency of Paints MeasuringKrebs Unit (KU) Viscosity Using a Stormer-Type Viscom-eterD 717 Test Methods for Analysis of Magnesium SilicatePigmentD 1208 Test Methods for Common Properties of CertainPigmentsD 1210 Test Method for Fineness

    7、of Dispersion of Pigment-Vehicle Systems by Hegman-Type Gage3. Composition and Properties3.1 The pigment shall be made by grinding or otherwiseprocessing natural, hydrous magnesium silicate and shallconform to the following requirements:Weight %min maxCombined magnesium and calcium sili-cates (MgO p

    8、lus SiO2plus CaO)88 .Calcium oxide (CaO) . 10Aluminum and iron oxides (R2O3) . 6Loss on ignition . 7Moisture and other volatile material . 13.2 ColorThe color shall be equal, within agreed upontolerances, to that of a reference sample agreed upon betweenthe purchaser and the seller.3.3 Coarse Partic

    9、lesThe pigment shall contain no morethan 2 % of coarse particles, retained on a 45-m (No. 325)sieve except as may be agreed upon between the purchaser andthe seller.3.4 Water-Soluble MatterThe pigment shall contain nomore than 1 % water-soluble matter except as may be agreedupon between the purchase

    10、r and the seller.3.5 Oil AbsorptionThe oil absorption shall be equal,within agreed upon tolerances, to that of a reference sampleagreed upon between the purchaser and the seller.3.6 ConsistencyWhen consistency is included in the pur-chasers specification, it shall be equal, within agreed upontoleran

    11、ces, to that of a reference sample agreed upon betweenthe purchaser and the seller.3.7 FinenessThe paint fineness shall be equal, withinagreed upon tolerances, to that of a reference sample agreedupon between the purchaser and the seller.4. Sampling4.1 Two samples shall be taken at random from diffe

    12、rentpackages from each lot, batch, days pack, or other unit ofproduction in a shipment. When no markings distinguishingbetween units of production appear, samples shall be taken1This specification is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, and Applicatio

    13、ns and is the direct responsibility ofSubcommittee D01.31 on Pigment Specifications.Current edition approved Nov. 1, 2007. Published November 2007. Originallyapproved in 1941. Last previous edition approved in 2003 as D 605 82 (2003).2For referenced ASTM standards, visit the ASTM website, www.astm.o

    14、rg, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.from differe

    15、nt packages in the ratio of two samples for each5000 kg (10 000 lb), 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 afterblending in equal quantities, the samples from the sameproduction unit form a

    16、composite sample.5. Test Methods5.1 Tests shall be conducted in accordance with the follow-ing ASTM test methods, where applicable. Test procedures notcovered by ASTM test methods shall be mutually agreed uponbetween the purchaser and the seller.5.1.1 Color, Composition, and Coarse ParticlesTestMeth

    17、ods D 717.5.1.2 Water-Soluble Matter and Loss on IgnitionTestMethods D 1208.5.1.3 Oil AbsorptionTest Method D 281.5.1.4 ConsistencyUse the pigment to prepare a mixtureaccording to the following directions: Weigh 78 g of petroleumspirits and 80 g of linseed oil (viscosity, 21 to 24 P; acidnumber, 4 t

    18、o 8) into a pint can and thoroughly mix with aspatula. Weigh in 160 g of magnesium silicate and stir with aspatula to wet all lumps. Stir with a motor-driven propeller-type stirrer for 5 min at approximately 800 r/min. Weigh in anadditional 180 g of linseed oil and stir an additional 2 min withthe e

    19、lectric stirrer. Determine the consistency in accordancewith Test Method D 562.5.1.5 FinenessTest Method D 1210. The test mixture maybe the same as that used for the consistency test.5.1.6 MoistureTest Methods D 280.6. Keywords6.1 hydrous magnesium silicate; magnesium silicate; pig-ment; talcASTM In

    20、ternational takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entire

    21、ly their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand s

    22、hould be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on S

    23、tandards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D 605 82 (2007)2


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