ASTM D5913-1996(2003) Standard Test Method for Evaluation of Cleanability of Paint Brushes《油漆刷除尘度评定的标准试验方法》.pdf

1、Designation: D 5913 96 (Reapproved 2003)Standard Test Method forEvaluation of Cleanability of Paint Brushes1This standard is issued under the fixed designation D 5913; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of las

2、t revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 b

3、oth, 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 D 5301.1.3 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly

4、.1.4 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

5、Documents2.1 ASTM Standards:D 1475 Test Method for Density of Liquid Coatings, Inks,and Related Products2D 3924 Specification for Standard Environment for Condi-tioning and Testing Paint, Varnish, Lacquer and RelatedMaterials2D 3925 Practice for Sampling Liquid Paints and RelatedPigmented Coatings2D

6、 5068 Practice for Preparation of Paint Brushes for Evalu-ation3D 5301 Practice for Physical Characterization of PaintBrushes33. 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

7、 for a specified period, 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

8、and cleaned is related 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-Gal

9、lon Cup or pycnometer.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 area4for 50-mm (2-in.) brushes.6.2 Laminated Fiber Board, (upson board) 610 by 305 mm(24 by 12 in.) with at least one sm

10、ooth side for 75-mm (3-in.)and 100-mm (4-in.) size brushes.6.3 Latex-Base Primer.56.4 Specified Test Paint.6.5 Abrasive Grit Soap.66.6 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

11、 filaments in the brushes 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

12、 paints.7. Sampling and Conditioning7.1 Sampling of test paint to be used in this test methodshall be in accordance with Practice D 3925.1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, and Applications and is the direct responsibility ofSubc

13、ommittee D01.61 on Paint Application Tools.Current edition approved May 10, 2003. Published June 2003. Originallyapproved in 1996. Last previous edition approved in 1996 as D 5913 - 96.2Annual Book of ASTM Standards, Vol 06.01.3Annual Book of ASTM Standards, Vol 06.02.4Test charts such as Leneta For

14、m 8H have been found suitable. They areavailable from the Leneta Company, 15 Whitney Road, Mahwah, NJ 07430.5Similar to U.S. Federal Specification TT-P-650C Primer Coating, White hasbeen found suitable for this purpose. Other latex primers may be adapted to meet therequirements of this test method.6

15、Lava soap has been found suitable for this purpose.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.2 Condition the materials to be used in this test method inaccordance with Section 6, Conditioning and Testing, ofSpecification D 39

16、24 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 during 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 proce

17、dures outlined in Test Method D 1475.8.2 Apply the latex primer to the entire smooth side of theupson board panels so as to coat it uniformly 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 D 3924.8.4 Rinse brush with

18、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 abrasive 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

19、 to remove excess soap. Spin brush handle for 106 1 s between palms of hands to remove excess water.NOTE 2New brushes often contain surface treatments or finishes thatmay temporarily influence the cleanability. The purpose of this step is toremove such materials.8.6 Break in test brush following pro

20、cedures as outlined inPractice D 5068. Secure panels to flat horizontal surface usingcommercial masking tape.8.7 After breaking in the brush, 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 3T

21、he 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 needed 5454 3 weight/gallon lbs! 3 Area ft2!400 6 25 ft2/gal(1)8.8 When applying the test paint, always start in the middleof the test panel and spread paint out.

22、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, 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 thefollow

23、ing one a little below (see Practice D 5068).8.10 Finish the area with light pressure by brushing in aperpendicular direction to the initial 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

24、 the paint tothe specified depth for its size as shown in Practice D 5068 for10 s. Remove brush and maintain in a vertical position for 306 2 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 kr

25、aft 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 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 D 392

26、4.8.13 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 abrasive soapfor 40 6 2 s. Gently rub brush in a circular motion on the barof soap to make a lather.8.14 Immediately rinse brush with luke-warm

27、running tapwater for 30 s to remove excess soap. Spin brush handle for 106 1 s between palms of hands to remove excess water. Allowbrush 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

28、 the filaments apart and inspect themthoroughly.8.16 Repeat the procedure two more times on additional likebrushes.8.17 Rank each set 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 infor

29、mation:9.1.1 Report the rank order of each test brush set,9.1.2 Report type of paint, applied spreading rate, and anyidentification marks 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 prec

30、isionor bias of this test method since the test results are non-quantitative.11. Keywords11.1 applicator-brush clean-up; cleanabilitybrushD 5913 96 (2003)2ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard.

31、 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 and must be reviewed e

32、very 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 of theresponsible tec

33、hnical 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 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 5913 96 (2003)3