1、Designation: D1849 95 (Reapproved 2014)1Standard Test Method forPackage Stability of Paint1This standard is issued under the fixed designation D1849; 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.This standard has been approved for use by agencies of the U.S. Department of Defense.1NOTEEditorial changes were made in Section 4, 5.2.3, and Keyword
3、s in June 2014.1. Scope1.1 This test method covers the change in consistency andcertain other properties that may take place when liquid paintof either the solvent-reducible or water-reducible type is storedat a temperature above 0C (32F).1.2 The values stated in SI units are to be regarded as thest
4、andard. 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 establish appro-priate safety and health practices and determine the appli
5、ca-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D562 Test Method for Consistency of Paints MeasuringKrebs Unit (KU) Viscosity Using a Stormer-Type Viscom-eterD869 Test Method for Evaluating Degree of Settling of PaintD3925 Practice for Sampling Liquid Pain
6、ts and RelatedPigmented Coatings3. Apparatus3.1 Spatula, weighing 45 6 1 g with square-ended blade120 mm (434 in.) in length and approximately 20 mm (1316 in.)in width as described in Test Method D869.3.2 ViscometerAStormer viscometer with the paddle-typerotor as described in Test Method D562.3.3 Pa
7、int Brush, 38 mm (112 in.) polyester or nylon/polyester, 13-mm (12-in.) thick and 63-mm (212-in.) length out,chisel tip.3.4 Test SurfaceA smooth-surfaced paper chart coatedwith a suitable varnish or lacquer so as to render the surfaceimpervious to paint vehicles.4. Procedure4.1 Obtain duplicate samp
8、les of the paint in original, un-opened containers in accordance with Practice D3925 (Note 1).If a long term test calls for intermediate examinations, obtainan additional duplicate sample for each intermediate examina-tion as agreed upon between laboratories or buyer and seller.Examine one of the sa
9、mples received for the characteristicslisted in 4.2, using the procedures therein described. Weigh theother unopened samples to the nearest 1 g, then hold themundisturbed for specified periods of time and ranges oftemperature, as agreed upon between purchaser and seller(Note 2).After storage, reweig
10、h the samples without shaking todetermine any loss of weight resulting from faulty closure.NOTE 1Containers should preferably be no larger than 1 L (1 qt).NOTE 2Storage for 1 month at 52 6 1C (125 6 2F) simulates someof the effects of storage for 6 months to 1 year at 23 6 2C (73 6 3.5F).However, it
11、 should be recognized that storage at 125F may not simplyaccelerate changes occurring at 73F. With water-borne paints, forexample, at 125F the growth of some putrefying bacteria is inhibited.4.2 Bring the stored samples to 23 6 2C (73 6 3.5F).Note any evidence of pressure or vacuum in the unopenedco
12、ntainer. Open each container and note any skinning, corro-sion and odor of putrefaction, rancidity or souring. Disregardother odors. If the sample is in a 1-L(1-qt) or smaller container,measure the character of the lower or settled layer with thespatula as described in Test Method D869. If the sampl
13、e islarger than 1 qt, omit this step. Hand stir each paint 300 stirs in2 min with a spatula appropriate to the container, stirring so asto ensure uniform distribution of any settled material (Note 3and Note 4).4.3 Immediately after stirring, measure the consistency ofthe paint in accordance with Tes
14、t Method D562.4.4 Apply each of the stored paints to its own test panel andthe control paint to an other. After the brushed film has1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, and Applications and is the direct responsibility ofSubcommit
15、tee D01.42 on Architectural Coatings.Current edition approved June 15, 2014. Published June 2014. Originallyapproved in 1961. Last previous edition approved in 2008 as D1849 95 (2008).DOI: 10.1520/D1849-95R14E01.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Cus
16、tomer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1completely dried, examine it for gr
17、ains approximately 0.8 mm(132 in.) in diameter, even larger gelatinous lumps, and streakscaused by such grains or lumps.NOTE 3Avoid the use of a mechanical shaker or syringe-typemeasuring device that might disperse particles or lumps that would not bedispersed by hand stirring.5. Report5.1 For the s
18、tored sample only, report the time of storage indays and the temperature of storage in degrees Fahrenheit orCelsius. Report the initial and final sample weight.5.2 For both the sample tested as received and the storedsample, report the following:5.2.1 Skinning, pressure, corrosion of the container,
19、andodor of spoilage, each quality separately designated as follows:10 = none8 = very slight6=slight4 = moderate2 = considerable0 = complete failure5.2.2 Rigidity of the lower layer as determined in accor-dance with Test Method D869, if performed;5.2.3 Consistency as the Stormer viscosity of the pain
20、tsamples (in accordance with Test Method D562);5.2.4 Grains, lumps, or streaks in the brushed film, desig-nated as follows:10 = none8 = very slight6=slight4 = moderate2 = considerable0 = complete failureNOTE 4This test method does not purport to fully address resistanceto attack by microorganisms, o
21、r the sterility of the paint sample.6. Precision and Bias6.1 No information is presented about either the precision orbias of this test method since the test result is nonquantitative.7. Keywords7.1 elevated temperature stability; high temperature stabil-ity; package stability; room temperature stab
22、ility; shelf stabil-ity; stabilitypackageASTM 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 th
23、e 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 revision o
24、f 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 should
25、make 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 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D1849 95 (2014)12
