Standard Practice for Working Life of Liquid or Paste Adhesives by Consistency and Bond Strength

SIGNIFICANCE AND USE
To determine acceptable working life of an adhesive, two procedures are used. This practice is intended to apply to:
4.1.1 Self-contained liquid or paste adhesives,
4.1.2 Adhesives requiring addition of a catalyst, hardener, filler, thinner, and so forth, or combinations of two or more of these materials just prior to use, and
4.1.3 Powdered or flaked adhesives which are dissolved in water or other solvent and are used as liquid or paste adhesives. CONSISTENCY PROCEDURE   Top
SCOPE
1.1 This practice covers two procedures applicable to all adhesives having a relatively short working life. It is intended to determine whether the working life conforms to the minimum specified working life of an adhesive required by consistency tests or by bond strength tests, or by both.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.

General Information

Status
Historical
Publication Date
31-Mar-2005
Technical Committee
Drafting Committee
Current Stage
Ref Project

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ASTM D1338-99(2005) - Standard Practice for Working Life of Liquid or Paste Adhesives by Consistency and Bond Strength
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D1338–99(Reapproved2005)
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 Department of Defense.
1. Scope 3.2.1 working life of an adhesive, n—the time elapsing
between the moment an adhesive is ready for use and the time
1.1 This practice covers two procedures applicable to all
when the adhesive is no longer usable.
adhesives having a relatively short working life. It is intended
to determine whether the working life conforms to the mini-
4. Significance and Use
mum specified working life of an adhesive required by
4.1 To determine acceptable working life of an adhesive,
consistency tests or by bond strength tests, or by both.
two procedures are used. This practice is intended to apply to:
1.2 The values stated in SI units are to be regarded as the
4.1.1 Self-contained liquid or paste adhesives,
standard. The values given in parentheses are for information
4.1.2 Adhesives requiring addition of a catalyst, hardener,
only.
filler, thinner, and so forth, or combinations of two or more of
1.3 This standard does not purport to address all of the
these materials just prior to use, and
safety concerns, if any, associated with its use. It is the
4.1.3 Powdered or flaked adhesives which are dissolved in
responsibility of the user of this standard to establish appro-
waterorothersolventandareusedasliquidorpasteadhesives.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
CONSISTENCY PROCEDURE
2. Referenced Documents
5. Apparatus
2.1 ASTM Standards:
5.1 Viscometer—Any means of measuring the viscosity or
D897 Test Method for Tensile Properties of Adhesive
consistency of the adhesive can be selected, provided that it is
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
5.2 Controlled-Atmosphere Chamber—Provide an atmo-
D907 Terminology of Adhesives
sphere of 23 6 1.1°C (73.4 6 2°F) and 50 6 2 % relative
D1002 Test Method forApparent Shear Strength of Single-
humidity. Alternative controlled conditions are permissible,
Lap-Joint Adhesively Bonded Metal Specimens by Ten-
provided the conditions are agreed upon by the purchaser and
sion Loading (Metal-to-Metal)
the manufacturer.
D1084 Test Methods for Viscosity of Adhesives
5.3 Beaker, of heat-resistant glass, 76 mm (3 in.) in
diameter, 102 mm (4 in.) high, and having a capacity of 400
3. Terminology
mL.
3.1 Definitions—Many terms in this practice are defined in
5.4 Stirring Rod, of glass, stainless steel, or other unreactive
Terminology D907.
material.
3.2 Definitions of Terms Specific to This Standard:
6. Procedure
6.1 Conduct the consistency test on both the adhesive when
This practice is under the jurisdiction of ASTM Committee D14 on Adhesives
freshly prepared and on the adhesive after having been
and is the direct responsibility of Subcommittee D14.10 on Working Properties.
Current edition approved April 1, 2005. Published April 2005. Originally
subjected to the working life test.
approved in 1954. Last previous edition approved in 1999 D1338 – 99. DOI:
NOTE 1—An alternative test method to be used with this practice isTest
10.1520/D1338-99R05.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Methods D1084.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D1338–99 (2005)
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
6.3 Start the test when the adhesive and all the components permissible, provided the conditions are agreeable to the
are at a temperature of 23 6 1.1°C (73.4 6 2°F), unless purchaser and the manufacturer.
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 both the adhesive
manufacturer, and again adjust the temperature to 23 6 1.1°C
when freshly prepared and on the adhesive after having been
if required. Immediately after mixing a 200-mL (or equivalent subjected to the working-life test.
weight) sample of the adhesive, place the prepared adhesive in 9.2 Prepare and blend the adhesive in accordance with 6.2,
the 400-mL be
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