ASTM D7149-05

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D7149–05
Standard Practice for
Determining the Freeze Thaw Stability of Adhesives
This standard is issued under the fixed designation D7149; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 4.3 This practice will identify any significant changes in the
manufactured viscosity of the product after five cycles, or as
1.1 This practice determines the ability of an adhesive to
otherwise specified, of freezing and thawing at a specific
withstand repeated freezing and thawing cycles at specific
temperature.
temperatures without any significant change in physical prop-
4.4 This practice will help determine if the pH of adhesive
erties.
has changed significantly due to the freezing and thawing
1.2 The values stated in SI units are to be regarded as the
cycles.
standard. The values given in parentheses are for information
only.
5. Apparatus
1.3 This practice does not purport to address all of the
5.1 A .9081 L (1 qt) container, or larger, with lid. Other
safety concerns, if any, associated with its use. It is the
container sizes may be applicable for some adhesives.
responsibility of the user of this practice to establish appro-
5.2 Freezer capable of maintaining -17.7°C 6-2° (0.0° F
priate safety and health practices and determine the applica-
6-5) to -6.6°C 6-2° (20° F 6-5°).
bility of regulatory limitation prior to use.
5.3 BrookfieldRVTViscometer1-spindleTCat5–20rpms
2. Referenced Documents Heliopath stand.
2.1 ASTM Standards:
NOTE 1—Other viscometer models, their speed and spindle size, may
D907 Terminology of Adhesives
be utilized as long as they comply to Test Methods D1084 or D2556 and
are recommended by the manufacturer for such use.
D1084 Test Methods for Viscosity of Adhesives
D1293 Test Methods for pH of Water
5.4 pH meter.
D2556 Test Method for Apparent Viscosity of Adhesives
5.5 Tongue depressor or similar.
Having Shear-Rate-Dependent Flow Properties
6. Conditioning
3. Terminology
6.1 Condition the adhesive to be tested 24 h at 23° C 6-2°
3.1 Definitions:
(73.4 6-4° F) with a relative humidity if 50 6 -5 % prior to
3.1.1 Many of the terms utilized in this practice are defined
testing.
in Terminology D907.
7. Procedure
4. Significance and Use
7.1 Fill the container with adhesive to be tested.
4.1 This practice will provide a procedure for determining
7.2 Checktheviscosityoftheadhesiveafteritistransferred
the stability of an adhesive to withstand five repeated cycles, or
into the container, as defined in Test Methods D1084 (Method
as otherwise specified, of freezing and thawing at a specific
B) or Test Method D2556.
temperature.
7.3 Check the pH of the adhesive after it is transferred into
4.2 Thispracticewillallowtheusertodeterminewhetheror
the container, as defined in Test Method D1293.
not the adhesive can be appropriately applied after cycling of
7.4 Close the container with lid and place it into the freezer
freezing and thawing.
at the specified temperature to be tested for a period of not less
than 16 h.
7.5 Remove container from freezer after the appropriate
This practice is under
...