1、Designation: D2792 69 (Reapproved 2010)Standard Test Method 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, the year of last
2、 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 describes a laboratory test for deter-mining the resistance of a dried film of traffic paint to the actio
3、nof a specified hydrocarbon solvent or gasoline fuel test fluid.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 does not purport to address all of thesafety concerns, if any, associated with its use. It is
4、 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 Standards:2D471 Test Method for Rubber PropertyEffect of Liquids2.2 Federal Standard:TT-S-735
5、Standard Test Fluids for Hydrocarbons33. Summary of Test Method3.1 The test paint is applied to a specified, properly pre-pared, tin panel. After aging, the coated panel is immersed inthe hydrocarbon test fluid for a specified period of time at aspecified temperature. The paint is examined for blist
6、ering,wrinkling, and loss of adhesion immediately upon removal andfor complete hardness after a specified recovery time.4. Significance and Use4.1 Traffic paints must have good resistance to motor oil andfuel drippings on the highway. This test method describes theprocedure necessary to measure the
7、resistance of traffic paint toreference test fluids in order to simulate this type of action.5. Apparatus5.1 Tin PanelPanels shall be cut from bright tin plateweighing not more than 25 g and not less than 19 g/dm2(0.51to 0.39 lb/ft2). The panel should be about 75 by 130 mm (3 by5 in.).5.2 Film Appli
8、cator, which will producea3or6-mil (76 or142-m) (0.003 or 0.006-in.) wet film thickness.6. Reagents and Materials6.1 Test LiquidThe testing liquid shall be specified by thepurchaser and shall be selected from the following, dependenton the paint tested:6.1.1 Type I of Federal Specification TT-S-735
9、which is thesame as ASTM Reference Fuel A (Test Method D471).6.1.2 Type III of Federal Specification TT-S-735 which isthe same as ASTM Reference Fuel B (Test Method D471).7. Procedure7.1 Clean the tin panels thoroughly with a suitable solvent,and buff lightly with fine steel wool. Prepare at least 3
10、 panelsfor each paint to be tested.7.2 Examine the test paint, remove any skins that arepresent, stir with a paddle to loosen any settled pigment, andmix thoroughly.7.3 Draw down the material on the panels using a filmapplicator that will produce a 76 or 142-m (3 or 6-mil) wetfilm as specified by th
11、e purchaser.7.4 Air dry the coating for the time specified by thepurchaser (usually 90 h) and then immerse the panels to halftheir length in the test liquid contained in a covered glassbeaker at the temperature specified by the purchaser (generally21 to 32C (70 to 90F). Use a separate beaker for eac
12、h painttested.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 thepurchaser-specified time (generally 24 h), and exam
13、ine for filmdefects and softening in comparison with the unimmersedportion of the panels.1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, and Applications and is the direct responsibility ofSubcommittee D01.44 on Traffic Coatings.Current edit
14、ion approved Dec. 1, 2010. Published December 2010. Originallyapproved in 1969. Last previous edition approved in 2004 as D2792 69 (2004).DOI: 10.1520/D2792-69R10.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book
15、 of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/dodssp.daps.dla.mil.1Copyright ASTM International, 100 Barr Harb
16、or Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.8. Report8.1 Report whether blistering, wrinkling, or loss of adhesionis evident immediately upon removal of panel from the testfluid as determined in 7.5.8.2 Report whether any softening of the film is evident afterthe panel has
17、 recovered as determined in 7.6.9. Precision9.1 No statement of precision, in terms of percentages, canbe made, although repeatability and reproducibility are excep-tionally good.10. Keywords10.1 solvent/fuel resistance test; traffic paintASTM International takes no position respecting the validity
18、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 subject t
19、o 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 Headquarters.
20、 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 standard is
21、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/).D2792 69 (2010)2
