ASTM D1338-99(2021)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D1338 − 99 (Reapproved 2021)
Standard Practice for
Working Life of Liquid or Paste Adhesives by Consistency
and Bond Strength
This standard is issued under the fixed designation D1338; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 3. Terminology
1.1 This practice covers two procedures applicable to all
3.1 Definitions—Many terms in this practice are defined in
adhesives having a relatively short working life. It is intended
Terminology D907.
to determine whether the working life conforms to the mini-
3.2 Definitions of Terms Specific to This Standard:
mum specified working life of an adhesive required by
3.2.1 working life of an adhesive, n—the time elapsing
consistency tests or by bond strength tests, or by both.
between the moment an adhesive is ready for use and the time
1.2 The values stated in SI units are to be regarded as the
when the adhesive is no longer usable.
standard. The values given in parentheses are for information
only.
4. Significance and Use
1.3 This standard does not purport to address all of the
4.1 To determine acceptable working life of an adhesive,
safety concerns, if any, associated with its use. It is the
two procedures are used. This practice is intended to apply to:
responsibility of the user of this standard to establish appro-
4.1.1 Self-contained liquid or paste adhesives,
priate safety, health, and environmental practices and deter-
4.1.2 Adhesives requiring addition of a catalyst, hardener,
mine the applicability of regulatory limitations prior to use.
filler, thinner, and so forth, or combinations of two or more of
1.4 This international standard was developed in accor-
these materials just prior to use, and
dance with internationally recognized principles on standard-
4.1.3 Powdered or flaked adhesives which are dissolved in
ization established in the Decision on Principles for the
waterorothersolventandareusedasliquidorpasteadhesives.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
CONSISTENCY PROCEDURE
Barriers to Trade (TBT) Committee.
5. Apparatus
2. Referenced Documents
2 5.1 Viscometer—Any means of measuring the viscosity or
2.1 ASTM Standards:
consistency of the adhesive can be selected, provided that it is
D897 Test Method for Tensile Properties ofAdhesive Bonds
suitable for the type of adhesive under test and provided that
D906 Test Method for Strength Properties of Adhesives in
the results can be expressed in fundamental units.
Plywood Type Construction in Shear by Tension Loading
D907 Terminology of Adhesives
5.2 Controlled-Atmosphere Chamber—Provide an atmo-
D1002 Test Method for Apparent Shear Strength of Single-
sphere of 23 6 1.1°C (73.4 6 2°F) and 50 6 2 % relative
Lap-Joint Adhesively Bonded Metal Specimens by Ten-
humidity. Alternative controlled conditions are permissible,
sion Loading (Metal-to-Metal)
provided the conditions are agreed upon by the purchaser and
D1084 Test Methods for Viscosity of Adhesives
the manufacturer.
5.3 Beaker, of heat-resistant glass, 76 mm (3 in.) in
diameter, 102 mm (4 in.) high, and having a capacity of 400
This practice is under the jurisdiction of ASTM Committee D14 on Adhesives
mL.
and is the direct responsibility of Subcommittee D14.10 on Working Properties.
Current edition approved April 1, 2021. Published April 2021. Originally
5.4 Stirring Rod, of glass, stainless steel, or other unreactive
approved in 1954. Last previous edition approved in 2016 as D1338 – 99 (2016).
material.
DOI: 10.1520/D1338-99R21.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. Borosilicate glass is suitable for this purpose.
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D1338 − 99 (2021)
6. Procedure BOND STRENGTH PROCEDURE
6.1 Conduct the consistency test on both the adhesive when
8. Apparatus
freshly prepared and on the adhesive after having been
subjected to the working life test.
8.1 Testing Machine, of suitable capacity, capable of main-
taining a specified rate of loading, and equipped with self-
NOTE 1—An alternative test method to be used with this practice isTest
aligning grips for holding the test specimens.
Methods D1084.
6.2 Precondition the adhesive and all the components at a
8.2 Controlled Atmosphere Chamber—Provide a tempera-
temperature of 23 6 1.1°C (73.4 6 2°F), unless otherwise
ture of 23 6 1.1°C (73.4 6 2°F) and 50 6 2 % relative
agreed upon between the purchaser and the manufacturer.
humidity for these tests. Alternative controlled conditions are
permissible, provided the conditions are agreeable to the
6.3 Start the test when the adhesive and all the components
purchaser and the manufacturer.
are at a temperature of 23 6 1.1°C (73.4 6 2°F), unless
otherwise agreed upon between the purchaser and the manu-
9. Procedure
facturer. If the adhesive consists of two or more components,
blend the components in accordance with instructions of the
9.1 Conduct the bond strength test on b
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