1、Designation: D2792 69 (Reapproved 2015)D2792 17Standard Test Method Practice forSolvent and Fuel Resistance of Traffic Paint1This standard is issued under the fixed designation D2792; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision,
2、 the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method practice describes a laboratory testprocedure for determining the resistance of a dried
3、film of traffic paintto the action of a specified hydrocarbon solvent or gasoline fuel test fluid.1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.1.3 This standard does not purport to address all of the safety concerns, i
4、f any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.1.4 This international standard was developed in accordance with internationally recognized
5、principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D471 Test Method for Rubber P
6、ropertyEffect of Liquids2.2 Federal Standard:TT-S-735 Standard Test Fluids for Hydrocarbons33. Summary of Test Method3.1 The test paint is applied to a specified, properly prepared, tin panel. After aging, the coated panel is immersed in thehydrocarbon test fluid for a specified period of time at a
7、specified temperature. The paint is examined for blistering, wrinkling, andloss of adhesion immediately upon removal and for complete hardness after a specified recovery time.4. Significance and Use4.1 Traffic paints must have good resistance to motor oil and fuel drippings on the highway. This test
8、 method describes theprocedure necessary to measureevaluate the resistance of traffic paint to reference test fluids in order to simulate this type of action.5. Apparatus5.1 Tin PanelPanels shall be cut from bright tin plate weighing not more than 25 g and not less than 19 g/dm2 (0.51 to 0.39lb/ft2)
9、. The panel should be about 75 by 130 mm (3 by 5 in.).5.2 Film Applicator, which will produce a 3 or 6-mil (76 or 142-m) (0.003 or 0.006-in.) wet film thickness.6. Reagents and Materials6.1 Test LiquidThe testing liquid shall be specified by the purchaser and shall be selected from the following, de
10、pendent onthe paint tested:6.1.1 Type I of Federal Specification TT-S-735 which is the same as ASTM Reference Fuel A (Test Method D471).6.1.2 Type III of Federal Specification TT-S-735 which is the same as ASTM Reference Fuel B (Test Method D471).1 This test method practice is under the jurisdiction
11、 of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and is the direct responsibilityof Subcommittee D01.44 on Traffic Coatings.Current edition approved June 1, 2015June 1, 2017. Published June 2015June 2017. Originally approved in 1969. Last previous edition approved in
12、 20102015 asD2792 69 (2010).(2015). DOI: 10.1520/D2792-69R15.10.1520/D2792-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on
13、the ASTM website.3 Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, DLA Document Services, Building 4/D, 700 Robbins Ave., Philadelphia, PA19111-5098, http:/dodssp.daps.dla.mil.19111-5094, http:/quicksearch.dla.mil.This document is not an ASTM standard and is intended
14、 only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current v
15、ersionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States17. Procedure7.1 Clean the tin panels thoroughly with a suitable solvent, and buff lightly with fine s
16、teel wool. Prepare at least 3 panels foreach paint to be tested.7.2 Examine the test paint, remove any skins that are present, stir with a paddle to loosen any settled pigment, and mixthoroughly.7.3 Draw down the material on the panels using a film applicator that will produce a 76 or 142-m (3 or 6-
17、mil) wet film asspecified by the purchaser.7.4 Air dry the coating for the time specified by the purchaser (usually 90 h) and then immerse the panels to half their lengthin the test liquid contained in a covered glass beaker at the temperature specified by the purchaser (generally 21 to 32C (70 to90
18、F). Use a separate beaker for each paint tested.7.5 At the end of the specified time (usually 4 to 18 h, depending on the type of paint) remove the panels and examineimmediately for blistering, wrinkling, and loss of adhesion.7.6 Allow the panels to dry at normal temperatures for the purchaser-speci
19、fied time (generally 24 h), and examine for filmdefects and softening in comparison with the unimmersed portion of the panels.8. Report8.1 Report whether blistering, wrinkling, or loss of adhesion is evident immediately upon removal of panel from the test fluidas determined in 7.5.8.2 Report whether
20、 any softening of the film is evident after the panel has recovered as determined in 7.6.9. Precision and Bias9.1 PrecisionNo statement of precision, in terms of percentages, can be made, although repeatability and reproducibility areexceptionally good.9. Keywords9.1 solvent/fuel resistance test; tr
21、affic paintASTM 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
22、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 of this standard or for addition
23、al 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 shouldmake your views known to the AS
24、TM 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 abo
25、veaddress 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 Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 172
