1、Designation: D 1849 95 (Reapproved 2003)Standard Test Method forPackage Stability of Paint1This standard is issued under the fixed designation D 1849; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A num
2、ber 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 test method covers the change in consistency andcer
3、tain other properties that may take place when liquid paintof either the solvent-reducible or water-reducible type is storedat a temperature above 32F (0C).1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.3 This standard d
4、oes 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 applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM St
5、andards:D 562 Test Method for Consistency of Paints MeasuringKrebs Unit (KU) Using a Stormer-Type Viscometer2D 869 Test Method for Evaluating Degree of Settling ofPaint3D 3925 Practice for Sampling Liquid Paints and RelatedPigment Coatings23. Apparatus3.1 Spatula, weighing 45 6 1 g with square-ended
6、 blade120 mm (434 in.) in length and approximately 20 mm (1316 in.)in width as described in Test Method D 869.3.2 ViscometerA Stormer viscometer with the paddle-type rotor as described in Test Method D 562.3.3 Paint Brush,38mm(112 in.) polyester or nylon/polyester, 13-mm (12-in.) thick and 63-mm (21
7、2-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 samples of the paint in original, un-opened containers in accordance with Practice D 3925 (Note
8、1). Examine one of the samples received for the characteristicslisted in 4.2, using the procedures therein described. Weigh theother unopened sample to the nearest 1 g, then hold itundisturbed for specified periods of time and ranges oftemperature, as agreed upon between purchaser and seller(Note 2)
9、. After storage, reweigh the sample 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 (
10、73 6 3.5F).However, it 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 sample to 23 6 2C (73 6 3.5F). Noteany evidence of pressure or vac
11、uum in the unopened container.Open the container and note any skinning, corrosion and odorof putrefaction, rancidity or souring. Disregard other odors. Ifthe sample is in a 1-L (1-qt) or smaller container, measure thecharacter of the lower or settled layer with the spatula asdescribed in Test Method
12、 D 869. If the sample is larger than 1qt, omit this step. Hand stir the paint 300 stirs in 2 min with aspatula appropriate to the container, stirring so as to ensureuniform distribution of any settled material (Note 3 and Note4).4.3 Immediately after stirring, measure the consistency ofthe paint in
13、accordance with Test Method D 562.4.4 Apply the stored paint to one test panel and the controlpaint to the other. After the brushed film has completely dried,examine it for grains approximately 0.8 mm (132 in.) indiameter, even larger gelatinous lumps, and streaks caused bysuch grains or lumps.NOTE
14、3Avoid the use of a mechanical shaker or syringe-type mea-suring device that might disperse particles or lumps that would not bedispersed by hand stirring.5. Report5.1 For the stored sample only, report the time of storage indays and the temperature of storage in degrees Fahrenheit orCelsius. Report
15、 the initial and final sample weight.1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, and Applications and is the direct responsibility ofSubcommittee D01.42 on Architectural Coatings.Current edition approved May 10, 2003. Published June 2003
16、. Originallyapproved in 1961. Last previous edition approved in 1995 as D 1849 95.2Annual Book of ASTM Standards, Vol 06.01.3Annual Book of ASTM Standards, Vol 06.02.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.2 For both the sa
17、mple tested as received and the storedsample, report the following:5.2.1 Skinning, pressure, corrosion of the container, andodor of spoilage, each quality separately designated as follows:10 = none8 = very slight6 = slight4 = moderate2 = considerable0 = complete failure5.2.2 Rigidity of the lower la
18、yer as determined in accor-dance with Test Method D 869, if performed;5.2.3 Consistency as the weight in grams necessary toproduce 200 r/min on the Stormer viscometer;5.2.4 Grains, lumps, or streaks in the brushed film, desig-nated as follows:10 = none 4 = moderate8 = very slight 2 = considerable6 =
19、 slight 0 = complete failureNOTE 4This test method does not purport to fully address resistanceto attack by microorganisms, or 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 nonquan
20、titative.7. Keywords7.1 package stability; 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 pat
21、ent rights, and 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 eit
22、her for revision 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
23、hearing you shouldmake 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).D 1849 95 (2003)2
