Standard Test Method for Freeze-Thaw Stability of Multicolor Lacquers

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1.1 This test method covers the determination of the extent to which multicolor lacquers resist coagulation and coalescence when subjected to freezing and subsequent thawing.  
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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.

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09-May-2001
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ASTM D2337-01 - Standard Test Method for Freeze-Thaw Stability of Multicolor Lacquers
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D 2337 – 01
Standard Test Method for
1
Freeze-Thaw Stability of Multicolor Lacquers
This standard is issued under the fixed designation D 2337; 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.
1. Scope (1in.)ofairspacebetweenthesidesofadjacentcans.Itshould
be capable of being maintained at a temperature between −23
1.1 This test method covers the determination of the extent
and − 26°C ( − 10 and − 15°F).
to which multicolor lacquers resist coagulation and coales-
5.2 Stormer Viscometer, with paddle-type rotor.
cence when subjected to freezing and subsequent thawing.
5.3 SprayGun,pressure-feedinternal-mixtype,tip0.086in.
1.2 The values stated in SI units are to be regarded as the
(2 mm) in diameter with wide-spray nozzle.
standard. The values given in parentheses are for information
5.4 WhitePaperStock,minimumsize200by280mm(8by
only.
11 in. ).
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
6. Preparation of Samples
responsibility of the user of this standard to establish appro-
6.1 For all gloss and semigloss multicolor lacquers, prepare
priate safety and health practices and determine the applica-
ten 1-L (1-qt) specimens and for flat multicolor lacquers four
bility of regulatory limitations prior to use.
1-qt specimens for testing. Mix the sample from which the
2. Referenced Documents specimens are filled well by boxing so that it is of a uniform
consistency and appearance. After recording the consistency
2.1 ASTM Standards:
reading as determined with a Stormer viscometer (in accor-
D 562 Test Method for Consistency of Paints Using the
2
dance with Test Method D 562 fill all samples in baked
Stormer Viscometer
varnish-lined containers and apply the lids promptly to prevent
3. Summary of Test Method evaporation loss).
3.1 Specimens of multicolor lacquers are placed in a cham-
7. Preparation of Control Standard
ber maintained at a temperature between −23 and − 26°C
7.1 Prepare a control standard by spraying from one of the
( − 10 and − 15°F) and allowed to remain 24 h.The specimens
1-L(1-qt)specimensofeachproducttobetested.Useacoated
are removed from the chamber and allowed to remain at room
white paper stock and spray on a sheet at least 200 by 280 mm
temperature for 24 h to reach thermal equilibrium. After the
(8 by 11 in.) in size. Adjust the fluid and atomizing pressures
specimens are mixed and the viscosity adjusted, they are then
2 2
to give a spreading rate of 3.7 to 4.9 m /L (150 to 200 ft /gal)
sprayed and allowed to dry before comparing with the control
2 2
forcompletecoveringand4.9to7.35m /L(200to300ft /gal)
standard sprayed from the original specimen.
for scatter coat application.
4. Significance and Use
8. Exposure of Samples to Test Conditions
4.1 Waterborne coatings, when subjected to cycles of freez-
8.1 Place nine specimens of all gloss and semigloss multi-
ing and thawing, can undergo detrimental changes in applica-
color lacquers and three specimens of all flat multicolor
tion and performance characteristics. This test method evalu-
lacquers under test in the chamber that is maintained between
ates the ability of multicolor lacquers to resist these changes.
−23 and − 26°C ( − 10 and − 15°F) . Place the specimens on
5. Apparatus and Materials
racks in such a manner that they do not touch the walls or
bottomofthechamberandsothatthereisatleast25mm(1in.
5.1 Cabinet, Room, or Enclosed Space, large enough to
)ofairspacebetweenadjacentspecimens.Oneachcycleallow
contain the specimens to be tested and allowing at least 25 mm
all specimens to remain in the chamber for 24 h before
removal. Remove from the chamber all specimens of each
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint
multicolorlacquerandletthemcometothermalequilibriumby
and Related Coatings, Materials, andApplications and is the direct reponsibility of
allowingthemtoremainatroomtemperature(25°C(77°F))for
Subcommittee D01.55 on Factory-Applied Coatings on Preformed Products.
24h.Mixthesespecimenstoauniformconsistencybyboxing.
Current edition approved May 10, 2001. Published July 2001. Originally
e1
published as D 2337 – 65 T. Last previous edition D 2337 – 84 (1996) .
2
Annual Book of ASTM Standards, Vol 06.01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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D 2337
Run a minimum of three specimens and all specimens shall with the control standard. To be considered satisfactory for
pass the test for
...

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