Standard Practice for Resistance of Adhesive Bonds to Chemical Reagents

SIGNIFICANCE AND USE
This practice is designed to determine the general effects of chemical reagents on the strength of the bonded system. It cannot distinguish between adsorption in the bulk adhesive or penetration at the adhesive/substrate interface.
SCOPE
1.1 This practice provides a uniform procedure for the exposure of adhesively bonded substrates to selected environments. This practice also provides for a qualitative measure of the adhesive bond strength using existing standard methods after exposure.
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 warnings, see Section .
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

General Information

Status
Historical
Publication Date
31-Mar-2004
Technical Committee
Current Stage
Ref Project

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D896–04
Standard Practice for
1
Resistance of Adhesive Bonds to Chemical Reagents
This standard is issued under the fixed designation D896; 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. This practice replaces Method 2011.1 of Federal
Test Method Standard No. 175a
1. Scope Bonded Plastic Lap-Shear Sandwich Joints in Shear by
Tension Loading
1.1 This practice provides a uniform procedure for the
exposure of adhesively bonded substrates to selected environ-
3. Terminology
ments. This practice also provides for a qualitative measure of
3.1 Definitions—Many terms in this practice are defined in
the adhesive bond strength using existing standard methods
Terminology D907.
after exposure.
1.2 This standard does not purport to address all of the
4. Summary of Practice
safety concerns, if any, associated with its use. It is the
4.1 Specimens are immersed in selected reagents for a
responsibility of the user of this standard to establish appro-
specified time and temperature. The specimens are recovered,
priate safety and health practices and determine the applica-
dried, and tested in accordance with selected methods, such as
bility of regulatory limitations prior to use. For specific
Test Methods D1002 or D3164.
warnings, see Section 8.
1.3 The values stated in SI units are to be regarded as the
5. Significance and Use
standard. The values given in parentheses are for information
5.1 Thispracticeisdesignedtodeterminethegeneraleffects
only.
of chemical reagents on the strength of the bonded system. It
cannot distinguish between adsorption in the bulk adhesive or
2. Referenced Documents
2 penetration at the adhesive/substrate interface.
2.1 ASTM Standards:
B117 Practice for Operating Salt Spray (Fog) Apparatus
6. Apparatus
D471 Test Method for Rubber Property—Effect of Liquids
6.1 The apparatus consists of containers for test specimens
D543 Practices for Evaluating the Resistance of Plastics to
and a cabinet for maintaining a temperature of 23 6 3°C (73 6
Chemical Reagents
5°F). Other suitable apparatus is required for immersing
D907 Terminology of Adhesives
specimens above and below room temperature.
D1002 Test Method forApparent Shear Strength of Single-
Lap-Joint Adhesively Bonded Metal Specimens by Ten- NOTE 1—Exercise care in the choice of materials with respect to
adherend and containers. Confirm that they are unaffected by the chemi-
sion Loading (Metal-to-Metal)
cals and solvents used in this practice.
D1151 Practice for Effect of Moisture and Temperature on
Adhesive Bonds
6.2 Apparatus for making strength tests is specified in the
D3164 Test Method for Strength Properties of Adhesively
method for the property to be measured.
7. Reagents
1
This practice is under the jurisdiction of ASTM Committee D14 on Adhesives
7.1 Directions for preparations of reagents are for approxi-
and is the direct responsibility of Subcommittee D14.80 on Metal Bonding
mately 1-L quantities. All percentages are by weight.
Adhesives.
7.2 Standard chemical reagents are selected from the list
Current edition approved April 1, 2004. Published April 2004. Originally
given in Test Method D543. Standard oils and fuels are
approved in 1946. Last previous edition approved in 1997 as D896 – 97. DOI:
10.1520/D0896-04.
selected from the list given in Test Method D471.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
7.3 Distilled Water—Freshly prepared distilled water is
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
used wherever water is specified in this practice.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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D896–04
table in Test Method D1151.
8. Supplementary Reagents (see 7.1)
8.1 Hydrocarbon Mixture No. 1:
10.2 A short time test is permissible for the purpose of
eliminating those materials that are unsuitable or unduly
Isooctane (2,4-trimethylpentane) 600 mL affected by the reagents, performed on films or suitable
Toluene 200 mL
specimens of the adhesive prepared in accordance with the
Xylene 150 mL
manufacturer’s instructions with regard to drying time, cure,
8.2 Standard Jet Fuel No. 1:
etc.
10.3 Remove the individual specimen from the reagent.
Toluene 300 mL
Rinse aqueous reagents off the specimen with distilled water.
Cyclohexane 600 mL
Rinse off other reagents with
...

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