ASTM D5009-2002(2011) Standard Test Method for Evaluating and Comparing Transfer Efficiency of Spray Applied Coatings Under Laboratory Conditions《实验室条件下喷涂涂料转换效率评估与比较的标准试验方法》.pdf
《ASTM D5009-2002(2011) Standard Test Method for Evaluating and Comparing Transfer Efficiency of Spray Applied Coatings Under Laboratory Conditions《实验室条件下喷涂涂料转换效率评估与比较的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM D5009-2002(2011) Standard Test Method for Evaluating and Comparing Transfer Efficiency of Spray Applied Coatings Under Laboratory Conditions《实验室条件下喷涂涂料转换效率评估与比较的标准试验方法》.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D5009 02 (Reapproved 2011)Standard Test Method forEvaluating and Comparing Transfer Efficiency of SprayApplied Coatings Under Laboratory Conditions1This standard is issued under the fixed designation D5009; the number immediately following the designation indicates the year oforiginal a
2、doption or, in the case of revision, the year of last 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 evaluation and comparisonof the transfer
3、efficiency of spray-applied coatings undercontrolled laboratory conditions.1.2 This test method has been shown to yield excellentintralaboratory reproducibility. Interlaboratory precision ispoorer and is highly dependent on closely controlled air flow inthe spray booth, the rate at which the paint i
4、s delivered to thepart, and other variables suggested in the test method.1.3 Limitations:1.3.1 This laboratory procedure only indicates the directionof the effect of spray variables on transfer efficiency. Themagnitude of the effect is determined only by specific plantexperience.NOTE 1This laborator
5、y procedure requires specific equipment andprocedures. For those laboratories that do not have access to the type ofequipment required a more general laboratory procedure is being preparedas Procedure B.1.4 The values stated in SI units are to be regarded as thestandard. The values given in parenthe
6、ses are for informationonly.1.5 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
7、prior to use. For specific hazardstatements, see Section 7 and 8.11.9 and 8.13.2.2. Referenced Documents2.1 ASTM Standards:2D1200 Test Method for Viscosity by Ford Viscosity CupD2369 Test Method for Volatile Content of CoatingsD3925 Practice for Sampling Liquid Paints and RelatedPigmented Coatings2.
8、2 National Fire Protection Association Documents3NFPA33 SprayApplication Using Flammable and Combus-tible MaterialsNFPA 86 Standard for Ovens and Furnaces3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 conveyor speed, nthe speed of the conveyor incentimeters per minute during
9、the test.3.1.2 fluid mass flow rate, nthe mass flow rate of paint ingrams per minute during the test.3.1.3 mass of foil, nthe weight of each target foil in gramsbefore being painted.3.1.4 mass of foil plus paint solids, nthe weight of eachtarget foil in grams after being painted and baked.3.1.5 mass
10、 of paint solids, nthe difference in the mass ofthe foils before painting and the mass of the foils after paintingand baking. This is the sum of the mass of the foil plus paintsolids less the sum of the mass of the foil.3.1.6 transfer effciency, nthe ratio of the mass of thepaint solids deposited on
11、 the foil to the mass of the paint solidssprayed during the test expressed as a percent.3.1.7 weight percent solids, nthe solids content in percentof the total weight of a sample of the paint used during the test.4. Summary of Test Method4.1 Metal panels covered with preweighed aluminum foilare conv
12、eyed in a spraybooth past a fixed spraygun. The coatedfoils are then baked to remove volatile matter. The transferefficiency is calculated on a weight basis using the solidscontent and quantity of the paint sprayed and the amount ofsolids on the coated aluminum foil target.5. Significance and Use5.1
13、 Subject to the limitations listed above, the procedure canbe used as a research tool to optimize spray equipment andpaint formulations as well as to study the relative effect on1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, and Application
14、s and is the direct responsibility ofSubcommittee D01.55 on Factory Applied Coatings on Preformed Products.Current edition approved June 1, 2011. Published June 2011. Originallyapproved in 1996. Last previous edition approved in 2005 as D5009 02 (2005).DOI: 10.1520/D5009-02R11.2For referenced ASTM s
15、tandards, 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 website.3Available from National Fire Protection Association (NFPA), 1 BatterymarchPark, Qu
16、incy, MA 02269-9101.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.transfer efficiency of changing operating variables, sprayapplication equipment, and types of coatings.6. Apparatus6.1 Laboratory Scale, accurate to 60.001 g for wei
17、ghtpercent solids determination.6.2 Platform Scale, accurate, or equivalent, to 60.01 g formass of foil, mass of foil plus paint, and mass flow rateinstrumentation calibration.6.3 Mass Flow Rate Meter, or mass flow rate determinationmethod, accurate to 62 % of the mass flow rate to be usedduring the
18、 test.6.4 Conveyor Timer or conveyor timing method, accurateto 61 % of the conveyor speed to be used during the test. Theequipment may consist of photoelectric cells or limit switchesused in conjunction with a digital timer or timing marks on theconveyor used in conjunction with a stopwatch. Take at
19、 leasttwo readings with a stopwatch and average the readings.6.5 Targets, consisting of a set of ten steel panels 15.2 cm (6in.) wide by 0.15875 cm (0.0625 in.) with 0.635-cm (0.25-in.)radius corners. A minimum panel length of 121.9 cm (48 in.)should be used. The length of the panel should be set so
20、 that aminimum of 30.4 cm (12 in.) above and below the spraypattern is achieved.6.5.1 It is essential to do this so that the entire height of thespray pattern is effectively captured.6.6 Aluminum Foil, medium temper or equivalent, 1.5 mil(0.0037 cm) thick.6.7 Back-Draw Water Wash Spray Booth, or equ
21、ivalent. Thebooth should be a minimum of 1.8 m (6 ft) wide and capableof up to 0.61 m/s (120 ft/min) air velocity in the middle at theplane of the target. If a dry filter booth is used, filters should bechanged as necessary to maintain uniform air velocity.6.8 Adjustable Rate Overhead Conveyor Syste
22、m, capable ofhanging targets as specified, and capable of up to 0.20 m/s (40ft/min) or the maximum speed desired by the user.6.9 Forced Draft Curing Oven, of sufficient size for curingtargets, and capable of achieving and maintaining the curetemperatures specified by the paint supplier. All ovens sh
23、ouldconform to NFPA 86.6.10 Curing Rack.6.11 Stopwatch.6.12 Air Velocity Measurement Equipment.6.13 Humidity and Temperature Measurement Equipment.6.14 Compressed Air Supply.7. Hazards7.1 For specific hazard information and guidance, consultthe suppliers Material Safety Data Sheet (MSDS) for themate
24、rials used.8. Procedure8.1 Set up the spray apparatus paint supply and the massflow measurement equipment in accordance with the manufac-turers instructions.8.1.1 In accordance with Chapter 9-11 of NFPA 33, allelectrically conductive objects in the spray area, except thoseobjects required by the pro
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