ASTM D2091-1996(2003) Standard Test Method for Print Resistance of Lacquers《喷漆的抗印迹性的标准试验方法》.pdf

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1、Designation: D 2091 96 (Reapproved 2003)Standard Test Method forPrint Resistance of Lacquers1This standard is issued under the fixed designation D 2091; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A n

2、umber 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 resistance of dried lacque

3、rfilms to imprinting.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 theresponsibility of the user of this stan

4、dard 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:D 823 Practices for Producing Films of Uniform Thicknessof Paint, Varnish, and Related Products on Test Panels2D 1005 Test Meth

5、od for Measurement of Dry-Film Thick-ness of Organic Coatings Using Micrometers2D 1186 Test Methods for Nondestructive Measurement ofDry Film Thickness of Nonmagnetic Coatings Applied toa Ferrous Base2D 1400 Test Method for Nondestructive Measurement ofDry Film Thickness of Nonconductive CoatingsApp

6、lied toa Nonferrous Metal Base2D 5235 Test Method for Microscopical Measurement ofDry Film Thickness of Coatings on Wood Products32.2 U.S. Federal Specifications:CCC-C-419(f) Cloth, Duck, Cotton, Unbleached, Plied4CCC-C-440(e) Cloth, Cheesecloth, Bleached and Un-bleached43. Summary of Test Method3.1

7、 A weight presses a piece of fabric against the testsurface. The surface is then examined and changes in appear-ance of the test surface are reported.4. Significance and Use4.1 An unsatisfactory appearance can result from pressuredeformation of a film inherently too soft or containing residualsolven

8、t. This test method is primarily used to evaluate theresistance of a lacquer finish to printing under the conditions ofpackaging, shipping, and warehousing.5. Apparatus and Materials5.1 Test PanelsAplane surface consisting of wood, metal,paper supported on plate glass, plastic, or other surface with

9、 anarea at least 100 % greater than the base of the weight. Theplaneness, smoothness, and composition should be agreedupon by the purchaser and the seller.5.2 Imprinting Fabric, 8-oz Army duck, Type III, conform-ing to Fed. Spec. CCC-C-419(f) or cheesecloth, Type I,conforming to Federal Specificatio

10、n CCC-C-440(e).NOTE 1With the cheesecloth only, use a pad of nonwoven felt clothat least 1.3 mm (0.05 in.) thick, weighing 0.24 kg/m2(7 oz/yd2) and largerthan the plane end of the weight.5.3 Weights, consisting of metal cylinders cut from standardstock 51 mm (2 in.) in diameter, with plane ends perp

11、endicularto the axis, and of a length to give a pressure of 3.5 or 7.0 kPa(12 or 1 lb/in.2).5.4 Automatic Application Equipment, (Optional),asde-scribed in Practices D 823.5.5 Film Thickness Measuring Apparatus, as described inTest Methods D 1005, D 1186, D 1400, and D 5235.6. Preparation of Test Sp

12、ecimen6.1 Single CoatsPrepare a specimen for test by applyingthe test lacquer to a panel with a film applicator or otherspecified method, as described in Practices D 823, to give a1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, and Applicati

13、ons and is the direct responsibility ofSubcommittee D 01.52 on Factory Coated Wood Products.Current edition approved Oct. 1, 2003. Published October 2003. Originallyapproved in 1962. Last previous edition approved in 1996 as D 2091 96.2Annual Book of ASTM Standards, Vol 06.01.3Annual Book of ASTM St

14、andards, Vol 06.02.4Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-50981Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.specified film thickness to be stated in

15、 the result. In the absenceof a specified dry film thickness, 25 6 3m(16 0.1 mil) isrecommended.6.2 Multiple CoatsUse the finish system as agreed uponbetween the purchaser and the seller. In the absence of aspecified dry film thickness, 75 6 8m(36 0.3 mils) arerecommended.6.3 ConditioningAllow to dr

16、y as agreed upon between thepurchaser and the seller, but run the test within 48 h aftercoating. In the absence of a specified drying schedule, a periodof 24 h at 23 6 2C (73.5 6 3.5F) and a relative humidity of50 6 5 % is recommended.7. Procedure7.1 Place over a uniform area of the specimen either

17、asmooth piece of duck cloth or a piece of cheesecloth with a feltpad cushion. Place one or more weights, each on top of theother, on the duck or cheesecloth and pad and maintain theweight in compliance with one of the following test conditions:7.1.1 At 23 6 2C (73.5 6 3.5F) and 50 6 5 % relativehumi

18、dity for an 18-h period,7.1.2 At 50C (120F) for a 4-h period, or7.1.3 At 60C (140F) for a 4-h period.7.2 After the specified time, remove the weight, pad, andfabric. Remove lint and dust from the panel with a clean airstream. Examine the specimen immediately under bright,diffused illumination for im

19、pression of the fabric into thelacquered surface and compare to photographic standards (Fig.1).8. Report8.1 Report the following information:8.1.1 Surface involved,8.1.2 Drying schedule,8.1.3 Film thickness,8.1.4 Weight used,8.1.5 Test temperature used, time, and8.1.6 Conditions of test other than t

20、hose primarily specifiedin this test method.9. Precision9.1 Results varying by more than 1 of print should besuspect, either with the same or different operators.10. Keywords10.1 lacquer; print resistanceFIG. 1 Print ResistanceD 2091 96 (2003)2ASTM International takes no position respecting the vali

21、dity 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 subj

22、ect 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 Headquar

23、ters. 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 standar

24、d 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 2091 96 (2003)3