1、Designation: D 962 81 (Reapproved 2003)Standard Specification forAluminum Powder and Paste Pigments for Paints1This standard is issued under the fixed designation D 962; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of l
2、ast revision. 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 four types and three classes ofaluminum pigments for use in paints.2. Referenced Documents2.
3、1 ASTM Standards:D 480 Test Methods for Sampling and Testing of FlakedAluminum Powders and Pastes2E 34 Test Methods for Chemical Analysis of Aluminum andAluminum-Base Alloys33. Classification3.1 Type ILeafing Aluminum Pigment Powder:3.1.1 Class A, FineMaximum of 0.1 % retained on a No.325 (45-m) sie
4、ve.3.1.2 Class B, MediumMaximum of 1.5 % retained on aNo. 325 (45-m) sieve.3.1.3 Class C, CoarseMaximum of 20 % retained on aNo. 325 (45-m) sieve.3.2 Type IILeafing Aluminum Pigment Paste:3.2.1 Class A, FineMaximum of 0.1 % retained on a No.325 (45-m) sieve.3.2.2 Class B, MediumMaximum of 1.0 % reta
5、ined on aNo. 325 (45-m) sieve.3.2.3 Class C, CoarseMaximum of 15 % retained on aNo. 325 (45-m) sieve.3.3 Type IIINonleafing Aluminum Pigment Powder(Note):3.3.1 Class A, FineMaximum of 1.5 % retained on a No.325 (45-m) sieve.3.3.2 Class B, MediumMaximum of 6.0 % retained on aNo. 325 (45-m) sieve.3.3.
6、3 Class C, CoarseMaximum of 20 % retained on aNo. 325 (45-m) sieve.3.4 Type IVNonleafing Aluminum Pigment Paste (Note 1):3.4.1 Class A, FineMaximum of 0.1 % retained on a No.325 (45-m) sieve.3.4.2 Class B, MediumMaximum of 1.0 % retained on aNo. 325 (45-m) sieve.3.4.3 Class C, CoarseMaximum of 11.0
7、% retained on aNo. 325 (45-m) sieve.NOTE 1The particle size characteristics of the Type 3 and Type 4pigments of the same class do not correspond with each other; in the caseof Types 1 and 2 they do.4. Composition and Properties4.1 Aluminum Pigment Powder (Type 1, Leafing and Type3, Nonleafing)The al
8、uminum pigment powder shall consistof commercially pure aluminum in the form of fine, polishedflakes, and a suitable fatty lubricant. It shall contain no filler orextender pigments.4.2 Aluminum Pigment Paste (Type 2, Leafing and Type 4,Nonleafing)The aluminum pigment paste shall consist ofcommercial
9、ly pure aluminum in the form of fine, polishedflakes, and a suitable fatty lubricant combined with a volatilethinner. It shall contain no filler or extender pigments.4.3 The aluminum pigments, powder, and paste of bothleafing and nonleafing types shall conform to the requirementsgiven in Table 1.4.4
10、 The paint made from the powder or paste shall befree-flowing and shall give a continuous coating at least equalin smoothness, luster, and general appearance to that of areference sample mutually agreed upon by the purchaser andthe seller.4.5 The aluminum pigments, powder and paste of bothleafing an
11、d nonleafing types, stored in unopened originalpackages within 6 months after shipment shall pass all testsapplicable to the respective type and class as described in TestMethods D 480.5. Test Methods and Sampling5.1 Sampling and tests shall be conducted in accordancewith Test Methods D 480. Since s
12、everal of the methods areempirical and the results are affected by the method, thespecified procedures should be closely followed.1This specification is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, and Applications and is the direct responsibility ofSubcommit
13、tee D01.31 on Pigment Specifications.Current edition approved Oct. 1, 2003. Published October 2003. Originallyapproved in 1948. Last previous edition approved in 1981 as D 962 81 (1999).2Annual Book of ASTM Standards, Vol 06.03.3Annual Book of ASTM Standards, Vol 03.05.1Copyright ASTM International,
14、 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6. Packaging6.1 Aluminum paste should be packaged in a polyventcontainer that can be safely vented in case of pressure build-up.7. Keywords7.1 aluminum powder; flake; leafing; nonleafing; paste;polishing lubricantAS
15、TM 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 the riskof infringement of such rights, are e
16、ntirely 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 standards
17、and 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 shouldmake your views known to the ASTM Committee
18、 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 obtained by contacting ASTM at the aboveaddress or
19、 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 Aluminum PigmentsLeafing NonleafingType 1(Powder)Type 2(Paste)Type 3(Powder)Type 4(Paste)Nonvolatile matter at 105 to 110C, min, % 99 65 99 65Easily extracted
20、 fatty and oily matter (polishing lubricant), max,%A4.0 3.0 4.0 3.0Total impurities other than fatty and oily matter, max, %A1.0 0.7 1.0 1.25Coarse particles, max, %:Class A (total residue retained on a No. 325 (45-m) sieve) 0.1 0.1 1.5 0.1Class B (total residue retained on a No. 325 (45-m) sieve) 1
21、.5 1.0 6.0 1.0Class C (total residue retained on:No. 100 (150-m) sieve 0.5 0.5 0.5 0.5No. 325 (45-m) sieve) 20.0 15.0 20.0 11.0Leafing, min, %:Class A 50 55 absent absentClass B 50 50 absent absentClass C 50 50 absent absentANonleafing pigments may contain metal compounds as dispersants. If required, a complete analysis may be made in accordance with Test Methods E 34.D 962 81 (2003)2
