1、Designation: D 4288 02 (Reapproved 2007)Standard Specification forCalcium Borosilicate Pigments1This standard is issued under the fixed designation D 4288; 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.1. Scope1.1 This specification covers three grades of pigment com-mercially known as calcium borosilicate composite pigment.The two types differ
3、 in chemical composition while the twoclasses of Type I differ in oil absorption.2. Referenced Documents2.1 ASTM Standards:2C 958 Test Method for Particle Size Distribution of Alu-mina or Quartz by X-Ray Monitoring of Gravity Sedimen-tationD 185 Test Methods for Coarse Particles in PigmentsD 281 Tes
4、t Method for Oil Absorption of Pigments bySpatula Rub-outD 1366 Practice for Reporting Particle Size Characteristicsof PigmentsD 3360 Test Method for Particle Size Distribution by Hy-drometer of the Common White Extender Pigments3D 4487 Test Methods for Analysis of Calcium Borosilicate3. Composition
5、 and Properties3.1 All types of pigment shall consist of a complex com-posite of alkaline earth silicates and borates and shall conformto the requirements of Table 1.3.2 The mass color of the dry pigment is white. The shadeand tinting strength when specified shall be equal to that of areference samp
6、le mutually agreed upon between the purchaserand the seller.3.3 Particle Size:3.3.1 All types are characterized by major amounts ofparticles in the 1 to 10-m range. Coarse particles retained ona 45-m (No. 325) sieve shall be less than 0.3 %. Themaximum specific surface diameter (SSD) shall be 2.5-m.
7、3.3.2 Where closer control within a class or type is required,the fineness requirements shall be as agreed upon between thepurchaser 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. Wh
8、en no markings distinguishingbetween units of production appear, samples shall be takenfrom different packages, in the ratio of two samples for each 10000 lb (5000 kg), except that for shipments of less than 10 000lb two samples shall be taken. At the option of the purchaser,the samples may be teste
9、d separately or after blending in equalquantities the samples from the same production unit to form acomposite sample.5. Test Methods5.1 Tests shall be conducted in accordance with the follow-ingASTM test methods. Test procedures not covered byASTMtest methods shall be mutually agreed upon between t
10、hepurchaser and the seller.5.2 Chemical AnalysisTest Methods D 4487.5.3 Ignition LossTest Methods D 4487.5.4 Particle SizeTo be determined by Test MethodD 3360 or equivalent instrumental technique.45.5 Specific Surface DiameterParticle Size by Sedimen-tation Methods section of Practice D 1366.5.6 Oi
11、l AbsorptionTest Method D 281.5.7 Coarse ParticlesThe Insoluble Dry Pigments sectionof Test Methods D 185.6. Keywords6.1 alkaline earth silicates; borates; calcium borosilicate;pigment; silicates1This specification is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materia
12、ls, and Applications and is the direct responsibility ofSubcommittee D01.31 on Pigment Specifications.Current edition approved Nov. 1, 2007. Published November 2007. Originallyapproved in 1983. Last previous edition approved in 2002 as D 4288 - 02.2For referenced ASTM standards, visit the ASTM websi
13、te, 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.3Withdrawn.4The Micromeritics Sedigraph 5000D Particle Size Analyzer, manufactured byMicromeritics Instrument Cor
14、p., 568 Goshen Springs Rd., Norcross, GA 30093, hasbeen found satisfactory for this purpose. See Test Method C 958 for operatinginstructions. Other instruments having a similar slurry density measurementfunction may also be used.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West
15、 Conshohocken, PA 19428-2959, United States.ASTM International 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
16、 the riskof infringement of such rights, are entirely 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 revisio
17、n of this standard or for additional standardsand should 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 sho
18、uldmake your views known to the ASTM Committee on Standards, 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 obta
19、ined 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).TABLE 1 Requirements for PigmentsCompositional RequirementsWeight %Type I, 10 % B2O3Type II, 17% B2O3Min Max Min MaxCalcium oxide (CaO) 4
20、1 46 41.5 45.5Boron oxide (B2O3) 9 11 15 17.5Silica (SiO2)3846Moisture and other volatile matter . 0.75 . 0.75Ignition loss at 450C 2.5 6.0 2.5 6.0Class A Class Bmin max min maxProperties:Oil absorption (lb/100 lb pigment) 35 41 23 29 37 47Coarse particlesTotal residue retained on 45-m (No. 325) sieve, % 0.3 0.3 0.3D 4288 02 (2007)2
