ASTM D6280-1998(2008) 809 Standard Specification for Zinc Phosphate Pigments《磷酸锌颜料的标准规范》.pdf
《ASTM D6280-1998(2008) 809 Standard Specification for Zinc Phosphate Pigments《磷酸锌颜料的标准规范》.pdf》由会员分享,可在线阅读,更多相关《ASTM D6280-1998(2008) 809 Standard Specification for Zinc Phosphate Pigments《磷酸锌颜料的标准规范》.pdf(5页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D 6280 98 (Reapproved 2008)Standard Specification forZinc Phosphate Pigments1This standard is issued under the fixed designation D 6280; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A numb
2、er in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers three types of pigments com-mercially known as zinc phosphate each of which may or maynot be available in specifi
3、c grades delineated by particle size oroil absorption.1.1.1 Type IZinc Phosphate, dihydrate predominant.1.1.2 Type IIZinc Phosphate, dihydrate tetrahydrate mix-ture.1.1.3 Type IIIZinc Phosphate, tetrahydrate predominant.1.2 The values stated in SI units are to be regarded asstandard. No other units
4、of measurement are included in thisstandard.2. Referenced Documents2.1 ASTM Standards:2D 153 Test Methods for Specific Gravity of PigmentsD 185 Test Methods for Coarse Particles in PigmentsD 280 Test Methods for Hygroscopic Moisture (and OtherMatter Volatile Under the Test Conditions) in PigmentsD 2
5、81 Test Method for Oil Absorption of Pigments bySpatula Rub-outD 1193 Specification for Reagent WaterD 1208 Test Methods for Common Properties of CertainPigmentsD 1210 Test Method for Fineness of Dispersion of Pigment-Vehicle Systems by Hegman-Type GageD 2448 Test Method for Water-Soluble Salts in P
6、igments byMeasuring the Specific Resistance of the Leachate of thePigment3. Significance and Use3.1 Zinc phosphate functions as both a chemical and apigment. As a pigment it is used in a variety of applicationsincluding that of corrosion inhibiting paints.4. Composition and Properties4.1 Zinc phosph
7、ate pigment is a white corrosion inhibitingpigment consisting either predominately of zinc phosphatedihydrate (Zn3(PO4)22H2O) or a mixture of zinc phosphatedihydrate and zinc phosphate tetrahydrate (Zn3(PO4)24H2O)or predominately of zinc phosphate tetrahydrate which is freefrom extenders, diluents,
8、and other pigments.4.2 Zinc phosphate shall be a chemically prepared pigmentand shall be of such type and grade as to conform to therequirements prescribed in Table 1. They shall additionally befree of extenders, modifiers, diluents, alteration of stoichiomet-ric chemical structure, co-reacted preci
9、pitates, and carbon-aceous material.4.3 The desired properties of the pigment, other than asherein indicated, shall be subject to mutual agreement betweeninterested parties and shall be based upon a satisfactory matchbetween any submitted sample and a previously agreed uponreference sample.5. Classi
10、fication5.1 Type Iwhich consists predominately of zinc phosphatedihydrate (Zn3(PO4)22H2O) and exhibits a differentiating losson ignition of the dried pigment at 600C between 8.5 and 10.0weight %.5.2 Type IIwhich consists essentially of a mixture of zincphosphate dihydrate (Zn3(PO4)22H2O) and Zinc Ph
11、osphateTetrahydrate (Zn3(PO4)24H2O) and exhibits a differentiatingloss on ignition of the dried pigment at 600C between 10.0and 14.0 weight %.5.3 Type IIIwhich consists predominately of zinc phos-phate tetrahydrate (Zn3(PO4)24H2O) and exhibits a differenti-ating loss on ignition of the dried pigment
12、 at 600C between14.0 and 18.0 weight %.6. Sampling6.1 Two samples shall be taken at random from differentpackages from each lot, batch, days pack or other unit ofproduction in a shipment. When no markings distinguishingbetween units of production appear, samples shall be takenfrom different packages
13、 in ratio of two samples for each 5000kg, except for those shipments of less than 5000 kg where twosamples shall be taken. At the option of the interested party the1This specification is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, and Applications and is the
14、 direct responsibility ofSubcommittee D01.31 on Pigment Specifications.Current edition approved Nov. 1, 2008. Published November 2008. Originallyapproved in 1998. Last previous edition approved in 2003 as D 6280 98 (2003).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontac
15、t 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.samples may be tested se
16、parately or as a composite sampleformed by blending in equal quantities the samples from thesame unit of production.7. Test Methods7.1 Tests shall be conducted in accordance with the follow-ing test methods. Test procedures not incorporated here and notcovered by ASTM test methods shall be mutually
17、agreed uponbetween the interested parties.7.1.1 Specific GravityTest Methods D 153, Method B.7.1.2 Oil AbsorptionTest Method D 281.7.1.3 Hegman GrindTest Method D 1210.7.1.4 Coarse ParticlesTest Methods D 185.7.1.5 pHTest Methods D 1208.7.1.6 Specific ResistanceTest Method D 2448.7.1.7 MoistureTest
18、Methods D 280.7.1.8 Chemical AnalysisIncorporated in this specificationas Annex A1 and Annex A2.7.1.9 Loss on IgnitionIncorporated in this specification asAnnex A3.8. Keywords8.1 analytical; zinc; zinc phosphateANNEXES(Mandatory Information)A1. TEST METHOD FOR DETERMINATION OF ZINC CONTENT FOR ZINC
19、PHOSPHATE TYPE PIGMENTSA1.1 ScopeA1.1.1 This test method covers the determination of thezinc content for zinc phosphate monohydrate, dihydrate, tet-rahydrate, or mixtures of these various crystal water contentpigments.A1.1.2 This standard does not purport to address all thesafety concerns, if any, a
20、ssociated with its use. It is theresponsibility of whoever uses this standard to consult andestablish the appropriate safety and health practices anddetermine the applicability of regulatory limitations prior touse.A1.2 Reference DocumentsA1.2.1 ASTM Standards:Test Method for Determination of Loss o
21、n Ignition for ZincPhosphate Type PigmentsTABLE 1 Zinc Phosphate Pigment PropertiesProperty TYPE I TYPE II TYPE IIIZnO, weight percent 62.6 - 65.1 62.6 - 65.1 62.6 - 65.1(on ignited sample)P2O5, weight percent 34.9 - 37.4 34.9 - 37.4 34.9 - 37.4(on ignited sample)Loss on ignition, weight 8.5 - 10.0
22、10.0 - 14.0 14.0 - 18.0percent (of dried pigment)GRADE GRADE GRADEMean Particle Size F M C F M C F M C(microns) 5.0 same sameOil adsorption 30 30 - 15 15 same sameMatter soluble in water, 6500 6500 6500specific resistance,(min. ohm - cm)Moisture and other volatile 0.5 0.5 0.5matter (105 - 110C)Speci
23、fic gravity, g/cm33.0 - 3.5 3.0 - 3.5 3.0 - 3.5Hegman grind 6 min 6 min 6 minCoarse particlepercent residue 325 M (45m)0.5 max 0.5 max 0.5 maxpH, aqueous suspension 6 - 8 6 - 8 6 - 8D 6280 98 (2008)2D 1193 Specification for Reagent WaterA1.3 Summary of Test MethodA1.3.1 A weighed sample taken from A
24、nnex A3, TestMethod for Determination of Loss on Ignition for ZincPhosphate Type Pigments completed analysis (that is, samplecontains no associated crystal water), is dissolved in ammoniabuffer, complexed with disodium ethylendiaminetetraacetatedihydrate (EDTA) and back titrated with a standard zinc
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
最后一页预览完了!喜欢就下载吧,查找使用更方便
5000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ASTMD628019982008809STANDARDSPECIFICATIONFORZINCPHOSPHATEPIGMENTS 磷酸 颜料 标准规范 PDF

链接地址:http://www.mydoc123.com/p-522048.html