ASTM D5913-1996(2013) 7065 Standard Test Method for Evaluation of Cleanability of Paint Brushes《评定油漆刷除尘性的标准试验方法》.pdf

1、Designation: D5913 96 (Reapproved 2013)Standard Test Method forEvaluation of Cleanability of Paint Brushes1This standard is issued under the fixed designation D5913; 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 a laboratory procedure for theevaluation or comparison of the cleanability of paint brushes,or both

3、, when used with latex paints.1.2 This test method is applicable to paint brushes up to 100mm (4 in.) in width and of similar head dimensions asdescribed in Practice D5301.1.3 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.4

4、 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. Referenced Docu

5、ments2.1 ASTM Standards:2D1475 Test Method For Density of Liquid Coatings, Inks,and Related ProductsD3924 Specification for Environment for Conditioning andTesting Paint, Varnish, Lacquer, and Related MaterialsD3925 Practice for Sampling Liquid Paints and RelatedPigmented CoatingsD5068 Practice for

6、Preparation of Paint Brushes for Evalu-ationD5301 Practice for Physical Characterization of PaintBrushes3. Summary of Test Method3.1 The test brushes are washed prior to painting to removeany residual finishes from the manufacturer, broken in, andthen dipped into the test paint for a specified perio

7、d, allowed todrain and the excess removed by brushing out on paper. Aftera specified drying period, the brushes are cleaned and evalu-ated for the presence of residual paint on the filaments.4. Significance and Use4.1 The final appearance of a paint brush after it has beenused and cleaned is related

8、 to the ability of the brush to performconsistently upon repeated use. This test method offers asubjective visual criteria that provides a rank order ofcleanability of the filaments of a brush after use.5. Apparatus5.1 Test Brushes, up to 100-mm (4-in.) sizes.5.2 Weight-per-Density Cup or pycnometer

9、.5.3 Balance, capable of weighing to an accuracy of 0.1 g.5.4 Stopwatch.6. Materials6.1 Test Panels, with a sealed surface, having 1000 cm2(1.076 ft2) of test area3for 50-mm (2-in.) brushes.6.2 Laminated Fiber Board, (upson board) 610 by 305 mm(24 by 12 in.) with at least one smooth side for 75-mm (

10、3-in.)and 100-mm (4-in.) size brushes.6.3 Latex-Base Primer.46.4 Specified Test Paint.6.5 Abrasive Grit Soap.56.6 Kraft or Brown Wrapping Paper, unsealed, 200 by 460mm (8 by 18 in.).NOTE 1The choice of the color of the test paint to be used should bedependent on the color of the filaments in the bru

11、shes under evaluation. Alight colored paint is preferable for dark filament-containing brushes andconversely, a dark colored paint is preferable for brushes containinglight-colored filaments. Latex interior flat paints are preferred becausethey dry faster than gloss or semigloss paints.1This test me

12、thod is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, and Applications and is the direct responsibility ofSubcommittee D01.61 on Paint Application Tools.Current edition approved Nov. 1, 2013. Published November 2013. Originallyapproved in 1996. Last previous e

13、dition approved in 2009 as D5913 96 (2009)1.DOI: 10.1520/D5913-96R13.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM

14、website.3Test charts such as Leneta Form 8H have been found suitable. They areavailable from the Leneta Company, 15 Whitney Road, Mahwah, NJ 07430.4Similar to U.S. Federal Specification TT-P-650C Primer Coating, White hasbeen found suitable for this purpose. Other latex primers may be adapted to mee

15、t therequirements of this test method.5Lava soap has been found suitable for this purpose.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States17. Sampling and Conditioning7.1 Sampling of test paint to be used in this test methodshall be in

16、 accordance with Practice D3925.7.2 Condition the materials to be used in this test method inaccordance with Section 6, Conditioning and Testing, ofSpecification D3924 for 24 h before use.7.3 All testing should be performed under the same condi-tions as outlined in 7.2. Do not change operators durin

17、g therunning of a series of tests, since this may invalidate any rankorders.8. Procedure8.1 Determine the weight per gallon of the test paint inaccordance with procedures outlined in Test Method D1475.8.2 Apply the latex primer to the entire smooth side of theupson board panels so as to coat it unif

18、ormly at a spreading rateof about 11 m2/L (450 ft2/gal).8.3 Air dry at least 18 h under standard conditions asoutlined in Specification D3924.8.4 Rinse brush with luke-warm running tap water (90 to110F) for 30 6 2 s while turning brush over two times.Immediately wash brush using warm water and abras

19、ive soapfor 40 6 2 s. Gently rub brush in a circular motion on the barof soap to make a lather.8.5 Immediately rinse brush with luke-warm running tapwater for 30 s to remove excess soap. Spin brush handle for 106 1 s between palms of hands to remove excess water.NOTE 2New brushes often contain surfa

20、ce treatments or finishes thatmay temporarily influence the cleanability. The purpose of this step is toremove such materials.8.6 Break in test brush following procedures as outlined inPractice D5068. Secure panels to flat horizontal surface usingcommercial masking tape.8.7 After breaking in the bru

21、sh, immediately apply the testpaint to the panel at a spreading rate of 400 6 25 ft2/gal or ata spreading rate agreed upon between the purchaser andseller.NOTE 3The amount of paint needed to be applied to the test panel toattain 400 6 25 ft2/gal can be calculated using the following equation:Grams n

22、eeded 5454 3 weight/gallon lbs! 3 Area ft2!400625 ft2/gal(1)8.8 When applying the test paint, always start in the middleof the test panel and spread paint out. This leaves the excesspaint in the middle where it is easier to spread uniformly overthe entire panel.8.9 From the middle of the test panel,

23、 paint first to one edge,then reverse, painting to the opposite edge. Make sure that thenext stroke in each direction is a little above the first, and thefollowing one a little below (see Practice D5068).8.10 Finish the area with light pressure by brushing in aperpendicular direction to the initial

24、application utilizing the tipof the brush. Make sure that total application time for the testpanel is 30 to 35 s.8.11 After preparing brush out, dip brush into the paint tothe specified depth for its size as shown in Practice D5068 for10 s. Remove brush and maintain in a vertical position for 306 2

25、s and allow excess paint to drain. Make four passes witheach test brush on the kraft paper (6.6). Each pass shall consistof painting over the length of the kraft paper to within 25 mm(1 in.) of the edge.8.12 Repeat 8.11 and make four more additional passes toremove excess paint from the brush, using

26、 a fresh sheet of kraftpaper each time. Suspend the brush in a vertical position for 306 1 min in the standard environment as outlined in Specifica-tion D3924.8.13 Rinse brush with luke-warm running tap water 32 to43C (90 to 110F) for 30 6 2 s while turning brush over twotimes. Immediately wash brus

27、h using warm water and abrasivesoap for 40 6 2 s. Gently rub brush in a circular motion on thebar of soap to make a lather.8.14 Immediately rinse brush with luke-warm running tapwater for 30 s to remove excess soap. Spin brush handle for 106 1 s between palms of hands to remove excess water. Allowbr

28、ush to hang in a vertical position (see 8.12) and dry overnightat ambient conditions.8.15 Visually examine filaments of brush and rank for thepresence of paint. Spread the filaments apart and inspect themthoroughly.8.16 Repeat the procedure two more times on additional likebrushes.8.17 Rank each set

29、 of three brushes from 1 (best or cleanest)to n (poorest cleaning ability), where n is the total number ofbrushes in the series.9. Report9.1 Report the following information:9.1.1 Report the rank order of each test brush set,9.1.2 Report type of paint, applied spreading rate, and anyidentification m

30、arks on the brush used in the test, and9.1.3 Any deviations from the recommended procedure.10. Precision and Bias10.1 No information is presented about either the precisionor bias of this test method since the test results are non-quantitative.11. Keywords11.1 applicator-brush clean-up; cleanability

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34、n to the ASTM 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 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/).D5913 96 (2013)3