ASTM D4707-2009 Standard Test Method for Measuring Paint Spatter Resistance During Roller Application《测量辊涂机耐涂料喷溅的标准试验方法》.pdf

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1、Designation: D 4707 09Standard Test Method forMeasuring Paint Spatter Resistance During RollerApplication1This standard is issued under the fixed designation D 4707; 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 covers the determination of the ten-dency of a paint to spatter when applied with a paint roller toa subst

3、rate.1.2 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 standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referen

4、ced Documents2.1 ASTM Standards:2D 3924 Specification for Environment for Conditioning andTesting Paint, Varnish, Lacquer, and Related MaterialsD 3925 Practice for Sampling Liquid Paints and RelatedPigmented Coatings2.2 Other Document:Pictorial Standards of Paint Roller Spatter33. Summary of Test Me

5、thod3.1 The test paint is applied to a black plastic panel bydraw-down. The coated plastic panel is immediately mountedon an essentially vertical surface above a sheet of paper used tocatch any spatter. A specially designed notched spool roller(see 5.1) is rolled through the film following a defined

6、procedure, tending to generate spatter. Any spatter falls uponthe spatter catch paper and, after drying, is rated against thepictorial standards.4. Significance and Use4.1 Paint spatter generated by roller application is depen-dent on the properties of both the paint being applied and thepaint rolle

7、r cover used for the application. To eliminate theinfluence of the paint roller cover as a variable, and thus restrictthe spatter-inducing variable to the paint under test only, thepaint roller cover is replaced by a standard notched spool rollerto generate spatter by a mechanism that simulates that

8、 of apaint-applying roller cover.4.2 Although most of the development work to establish thistest method was undertaken using latex paints, sufficient workwas also done to show its applicability to solvent-reduciblepaints.4.3 Tests during the development of this test methodshowed that the spattering

9、properties of paints, like otherphysical properties, may in time change. Therefore, the resultsof this test are valid only for the time when the test is run.5. Apparatus5.1 Notched Spool Test Roller (Fig. 1).4,55.2 Glass Plateat least 230 by 485 mm (9 by 19 in.) by 6mm (0.25 in.) thick.5.3 U-shaped

10、Film Caster,6,5having a 175-m (7-mil)clearance by 135 mm (5.25 in.) wide.5.4 Metronome, adjusted to 80 beats per min.6. Materials6.1 Black Plastic Panels,7,5165 by 430 mm (6.5 by 17 in.).6.2 Flannel Cloth.6.3 Masking Tape, 25 mm (1 in.) wide.6.4 Spatter Catch Paper, minimum size 190 by 240 mm(7.5 by

11、 9.5 in.). This paper can be any convenient paper towhich the spatter droplets will adhere and of a color to contrastthat of the paint under test.1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, and Applications and is the direct responsibili

12、ty ofSubcommittee D01.42 on Architectural Coatings.Current edition approved June 1, 2009. Published July 2009. Originally approvedin 1987. Last previous edition approved in 2003 as D 4707 - 97 (2003)1.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Servi

13、ce at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Copies of the pictorial photographic reference standards are contained inPictorial Standards of Coatings Defects and may be obtained from the Federationof Soci

14、eties For Coatings Technology, 492 Norristown Rd., Blue Bell, PA 19422.4The sole source of supply for the notched spool test roller known to thecommittee at this time is Precision Gage and Tool Co., 28 Volkenand Ave., Dayton,OH 45410.5If you are aware of alternative suppliers, please provide this in

15、formation toASTM International Headquarters. Your comments will receive careful consider-ation at a meeting of the responsible technical committee,1which you may attend.6The sole source of supply for the Dow film caster known to the committee atthis time is BYKGardner, Inc., Gardner Laboratory, 2435

16、 Linden Lane, SilverSpring, MD 20910.7The sole source of supply for the dull black plastic panels, Leneta P-121-10N,612 by 17 in. by 10 mil (production tolerance 61 mil) (165 by 430 by 250 m) insize known to the committee at this time is Leneta Company, 15 Whitney Rd.,Mahwah, NJ 07430.1Copyright AST

17、M International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7. Sampling and Conditioning7.1 Sample the material in accordance with PracticeD 3925.7.2 Prior to testing, the samples shall be conditioned inaccordance with the standard atmosphere described in Spe

18、ci-fication D 3924. The testing shall take place under the sameconditions.8. Procedure8.1 Clean the top of the glass plate and both sides of theblack plastic panel to ensure that they are free of specks. Placethe black plastic panel on the glass plate and tape the narrowend at the top to the glass p

19、late. Smooth the panel along theplate to ensure a close fit.8.2 Stir the paint under test thoroughly and strain to removeall skins and particles. Place the film caster with the 175-m(7.0-mil) side down immediately below the taped portion of theblack plastic panel. Turn on the metronome. Into the wel

20、lformed by the film caster, pour sufficient paint that the well isfilled from corner to corner. Draw down the paint the fulllength of the black plastic panel until the film caster is fullybeyond the far edge. The rate of application should be fairlyslow, 3 to 4 seconds from end to end, to prevent pi

21、nholes orholidays in the paint film.8.3 Immediately upon completion of the draw-down, re-move the black plastic panel from the glass plate, keeping themasking tape intact, and tape, with the long direction verticalto a surface that is vertical or nearly vertical (within 5 ofvertical, top sloping awa

22、y from the operator) with the bottomof the black plastic panel about 25 mm (1 in.) above thelaboratory bench or table (Fig. 2). It is desirable that the surfaceunder the black plastic panel be firm but with a little resilience.A backing of 6-mm (14-in.) thick fiberboard is ideal as veryhard surfaces

23、 make proper performance of the test difficult.Center the spatter catch paper on the laboratory bench or tableunder the black plastic panel with the short side of the catchpaper closest to the black plastic panel.8.4 Using the clean, notched spool roller, start in one of theupper corners and roll do

24、wnward and upward through the paintfilm. Always keep the notched spool in contact with the blackplastic panel, not removing the roller from the film whenchanging directions. Make ten passes in each direction (20passes total), 380 6 15 mm (15 612 in.) per pass, progres-sively moving sideways from one

25、 edge of the film to the other(Fig. 3). Each pass should coincide with a beat of themetronome and the motion should be continuous, not jerky.Use the metronome for accurate timing since the speed of therolling of the notched spool roller through the paint film hasDimensionsin. mmA Flange thickness 0.

26、0636 0.005 1.60 6 0.13B Space between flanges 0.343 6 0.005 8.716 0.13C Total diameter 1.6006 0.015 40.16 6 0.38D Diameter under notches 1.400 6 0.015 35.56 6 0.38E Hole diameter 0.281 6 0.005 7.14 6 0.13FIG. 1 Notched Spool RollerD4707092been found to be the only variable significantly affecting th

27、eresults of the test. Make sure that all four flanges of the notchedspool roller are within the draw-down area at all times. Usesufficient pressure to maintain constant contact between thenotched spool roller and the black plastic panel. Note that aslong as constant contact is maintained, pressure v

28、ariations havenot been found to affect the results noticeably.8.5 Remove the spatter catch paper and lay it in a suitableplace to dry.8.6 Repeat the test with a second plastic panel after cleaningthe apparatus.9. Grading Procedure9.1 Carefully cut an area 190 by 240 mm (7.5 by 9.5 in.) outof the fro

29、nt edge (edge nearest the paint) of the spatter catchpaper. The shorter side will be the front edge. Center the areawith respect to the spatter so a maximum of spatter is on thissheet (Fig. 4).9.2 Compare the cut-out area to the pictorial standards.Assign the rating that most closely matches a stand

30、ard,interpolating as needed for ratings (0poor spatter resistance,2, 4, 6, 8, and 10no spatter).NOTE 1Figs. 5-9 are duplications thereof for sample purposes and arenot meant to be used for test grading purposes.9.3 In rating the paints using the photographic standards,consider the population of spat

31、ter droplets of greater impor-tance than the average size of the spatter droplets.9.4 If the ratings of two tests do not agree within 1 unit,repeat until such precision is obtained.10. Precision and Bias10.1 In an interlaboratory study of this test method in whichone operator in each of three labora

32、tories tested six paints witha broad range in spattering properties, one operator in twoother laboratories tested three of the paints and one operator inFIG. 2 Test Set-Up SchematicDimensionsin. mmA Notched spool pass length 15 612 380 6 15B Drawdown width (determined byblade)514 140C Panel width 61

33、2 165D Panel length 17 430FIG. 3 Test Pattern SchematicFIG. 4 Cutting Out Section of Spatter Catch paper for EvaluationD4707093FIG. 5 Paint Spatter Resistance to Roller Application Rating Standard No. 1D4707094FIG. 6 Paint Spatter Resistance to Roller Application Rating Standard No. 3D4707095FIG. 7

34、Paint Spatter Resistance to Roller Application Rating Standard No. 5D4707096FIG. 8 Paint Spatter Resistance to Roller Application Rating Standard No. 7D4707097FIG. 9 Paint Spatter Resistance to Roller Application Rating Standard No. 9D4707098one laboratory tested only two paints, the between-laborat

35、oriesstandard deviation was found to be 0.17 rating units (see Note2) with 18 df, with no results discarded. Based on this standarddeviation, the following criteria should be used for judging theacceptability of results at the 95 % confidence level:10.1.1 RepeatabilityIntralaboratory precision is no

36、rmallybetter than interlaboratory precision. However, when rating isinvolved, it is difficult to establish reliability because of thenatural tendency for bias when operators know the samematerial is being tested again.NOTE 2When the results were ranked, the agreement among the sixoperators was perfe

37、ct. This might not occur if some paints with lessdistinct differences in spattering properties were included in a similarstudy.10.1.2 ReproducibilityTwo results obtained by operatorsin different laboratories should be considered suspect if theydiffer by more than 0.5 units.10.2 BiasBias can not be d

38、etermined for this test methodbecause there is no standard reference material.11. Keywords11.1 paint spatter resistance; resistancepaint spatter;roller application; spatteringASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentio

39、nedin 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 to revision at any time by the responsible technical committee an

40、d 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. Your comments will receive careful consideration at a meeting o

41、f 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 copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box

42、 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).D4707099