1、Designation: D 1791 93 (Reapproved 2008)Standard Test Method forAccelerated Aging of Liquid Water-Emulsion Floor Polishes1This standard is issued under the fixed designation D 1791; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, t
2、he year of last 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 test method covers the storage stability of liquidwater-emulsion floor polishes.1.2 Storage for 30 da
3、ys at 52C (125F), while not aguarantee of one year stability at 21C (70F), is believed to bea more reliable indicator of storage stability than similar testsof shorter duration.NOTE 1The 60 specular gloss on black glass determined by TestMethod D 1455, may be used to confirm this observation. A subs
4、tantialdifference in gloss between aged and unaged samples is an indication ofinstability. A shelf stability of one year can be reasonably expected of thematerial in question if duplicate samples remain unchanged for 30 days at52 6 1.1C (125 6 2F). If one or both duplicates show more than slightvisc
5、osity increases or slight creaming, other evidence of stability must besought.1.3 This standard does not purport to address all of thesafety problems, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and deter
6、mine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 1455 Test Method for 60 Specular Gloss of EmulsionFloor Polish3. Significance and Use3.1 This test method is not absolute but does give anindication of the useful shelf-life of a liquid water-
7、emulsionfloor polish. Will indicate whether a polish will gel or remaina usable liquid over the desired storage life of the product. Itshould be noted that polishes of different composition typeswill vary in useful storage life under identical storage condi-tions.4. Apparatus4.1 Flint Glass Bottles,
8、 4-oz (125 mL) capacity.34.2 Drying Oven, capable of maintaining the temperature ofthe emulsion samples at 52 6 1.1C (125 6 2F).5. Sample5.1 The sample shall be thoroughly representative of thematerial in question, and the portion used for the test shall bethoroughly representative of the sample its
9、elf.5.2 Test samples shall be prepared in duplicate for eachmaterial in question.6. Procedure6.1 Transfer 100 mL of the emulsion to a clean, dry testbottle and hand tighten the screw cap.6.2 Place the test set or series inverted in a drying ovencapable of maintaining the temperature of the emulsions
10、 at 526 1.1C (125 6 2F).6.3 Observe the samples daily for the first 14 days andthereafter twice weekly (for example, Monday and Thursday)for the remainder of the 30-day storage period. Samples shouldbe examined as rapidly as possible with a minimum ofagitation, and returned to the oven. Do not loose
11、n the cap.7. Report7.1 The report shall include the following recorded at thetime of each observation on a suitable data sheet:7.1.1 Date.7.1.2 Number of days in test.7.1.3 Condition of the emulsion using the following sym-bols:7.1.3.1 OK = no visible change (Note 1).7.1.3.2 SV = slightly viscous.7.
12、1.3.3 V = viscous.7.1.3.4 G = gelled.7.1.3.5 Cr = creamed.7.1.3.6 Sep = other types of liquid phase separation.7.1.3.7 Sed = sedimentation of solid matter.1This test method is under the jurisdiction ofASTM Committee D21 on Polishesand is the direct responsibility of Subcommittee D21.03 on Chemical a
13、nd PhysicalTesting.Current edition approved March 1, 2008. Published April 2008. Originallyapproved in 1960. Last previous edition approved in 2004 as D 1791 93(2004).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual
14、Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3These bottles are available from Fisher Scientific. Request Catalog 86,02883BA.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States
15、.8. Precision and Bias8.1 This test method does not necessarily correlate withlong-term storage stability of approximately one year. Corre-lation between this test method and actual long-term stabilitymust be determined for each individual polish. (See 1.2.)8.2 BiasSince there is no accepted referen
16、ce materialsuitable for determining the bias for the procedure in TestMethod D 1791 for accelerated aging of liquid wateremulsionfloor polishes, bias has not been determined.9. Keywords9.1 aging; floor polish; gloss; storage stability;wateremulsionASTM International takes no position respecting the
17、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 entirely their own responsibility.This standard is
18、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 standardsand should be addressed to ASTM International Head
19、quarters. 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 on Standards, at the address shown below.This sta
20、ndard 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 1791 93 (2008)2
