ASTM D5009-02
(Test Method)Standard Test Method for Evaluating and Comparing Transfer Efficiency of Spray Applied Coatings Under Laboratory Conditions
Standard Test Method for Evaluating and Comparing Transfer Efficiency of Spray Applied Coatings Under Laboratory Conditions
SCOPE
1.1 This test method covers the evaluation and comparison of the transfer efficiency of spray-applied coatings under controlled laboratory conditions.
1.2 This test method has been shown to yield excellent intralaboratory reproducibility. Interlaboratory precision is poorer and is highly dependent on closely controlled air flow in the spray booth, the rate at which the paint is delivered to the part, and other variables suggested in the test method.
1.3 Limitations
1.3.1 This laboratory procedure only indicates the direction of the effect of spray variables on transfer efficiency. The magnitude of the effect is determined only by specific plant experience.
Note 1—This laboratory procedure requires specific equipment and procedures. For those laboratories that do not have access to the type of equipment required a more general laboratory procedure is being prepared as Procedure B.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 7 and 8.11.9 and 8.13.2.
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Designation: D 5009 – 02
Standard Test Method for
Evaluating and Comparing Transfer Efficiency of Spray
1
Applied Coatings Under Laboratory Conditions
This standard is issued under the fixed designation D 5009; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
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1. Scope 2.2 National Fire Protection Association Documents
NFPA33 SprayApplicationUsingFlammableandCombus-
1.1 This test method covers the evaluation and comparison
tible Materials
of the transfer efficiency of spray-applied coatings under
NFPA 86 Standard for Ovens and Furnaces
controlled laboratory conditions.
1.2 This test method has been shown to yield excellent
3. Terminology
intralaboratory reproducibility. Interlaboratory precision is
3.1 Definitions of Terms Specific to This Standard:
poorerandishighlydependentoncloselycontrolledairflowin
3.1.1 conveyor speed—the speed of the conveyor in centi-
the spray booth, the rate at which the paint is delivered to the
meters per minute during the test.
part, and other variables suggested in the test method.
3.1.2 fluid mass flow rate—the mass flow rate of paint in
1.3 Limitations:
grams per minute during the test.
1.3.1 This laboratory procedure only indicates the direction
3.1.3 mass of foil—the weight of each target foil in grams
of the effect of spray variables on transfer efficiency. The
before being painted.
magnitude of the effect is determined only by specific plant
3.1.4 mass of foil plus paint solids—the weight of each
experience.
target foil in grams after being painted and baked.
NOTE 1—This laboratory procedure requires specific equipment and
3.1.5 mass of paint solids—the difference in the mass of the
procedures. For those laboratories that do not have access to the type of
foilsbeforepaintingandthemassofthefoilsafterpaintingand
equipment required a more general laboratory procedure is being prepared
baking. This is the sum of the mass of the foil plus paint solids
as Procedure B.
less the sum of the mass of the foil.
1.4 The values stated in SI units are to be regarded as the
3.1.6 transfer effıciency—the ratio of the mass of the paint
standard. The values given in parentheses are for information
solids deposited on the foil to the mass of the paint solids
only.
sprayed during the test expressed as a percent.
1.5 This standard does not purport to address all of the
3.1.7 weight percent solids—the solids content in percent of
safety concerns, if any, associated with its use. It is the
the total weight of a sample of the paint used during the test.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4. Summary of Test Method
bility of regulatory limitations prior to use. For specific hazard
4.1 Metal panels covered with preweighed aluminum foil
statements, see Section 7 and 8.11.9 and 8.13.2.
are conveyed in a spraybooth past a fixed spraygun.The coated
foils are then baked to remove volatile matter. The transfer
2. Referenced Documents
efficiency is calculated on a weight basis using the solids
2.1 ASTM Standards:
content and quantity of the paint sprayed and the amount of
2
D 1200 Test Method for Viscosity by Ford Viscosity Cup
solids on the coated aluminum foil target.
2
D 2369 Test Method for Volatile Content of Coatings
D 3925 Practice for Sampling Liquid Paints and Related 5. Significance and Use
2
Pigmented Coatings
5.1 Subjecttothelimitationslistedabove,theprocedurecan
be used as a research tool to optimize spray equipment and
paint formulations as well as to study the relative effect on
transfer efficiency of changing operating variables, spray
application equipment, and types of coatings.
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This test method is under the jurisdiction of ASTM Committee D01 on Paint
and Related Coatings, Materials, andApplications and is the direct responsibility of
Subcommittee D01.55 on Factory Applied Coatings on Preformed Products.
Current edition approved Dec. 10, 2002. Published February 2003. Originally
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approved in 1996. Last previous edition approved in 2002 as D 5009 – 96 (2002). Available from National Fire Protection Association (NFPA), 1 Batterymarch
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Annual Book of ASTM Standards, Vol 06.01. Park, Quincy, MA 02269-9101.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D5009–02
6. Apparatus 8.3 Using an airtight container take a paint grab sample
from the paint pot in accordance with Practice D 3925.
6.1 Laboratory Scale, accurate to 60.001 g for weight
8.4 Determine and record the followi
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