ASTM D896-04(2017)
(Practice)Standard Practice for Resistance of Adhesive Bonds to Chemical Reagents
Standard Practice for Resistance of Adhesive Bonds to Chemical Reagents
SIGNIFICANCE AND USE
5.1 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.
1.2 The values stated in SI 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific warnings, see Section 8.
1.4 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.
General Information
Relations
Standards Content (Sample)
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: D896 − 04 (Reapproved 2017)
Standard Practice for
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 U.S. Department of Defense.
This practice replaces Method 2011.1 of Federal Test Method Standard No. 175a.
1. Scope sion Loading (Metal-to-Metal)
D1151 Practice for Effect of Moisture and Temperature on
1.1 This practice provides a uniform procedure for the
Adhesive Bonds
exposure of adhesively bonded substrates to selected environ-
D3164 Test Method for Strength Properties of Adhesively
ments. This practice also provides for a qualitative measure of
Bonded Plastic Lap-Shear Sandwich Joints in Shear by
the adhesive bond strength using existing standard methods
Tension Loading
after exposure.
1.2 The values stated in SI units are to be regarded as the
3. Terminology
standard. The values given in parentheses are for information
3.1 Definitions—Many terms in this practice are defined in
only.
Terminology D907.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Summary of Practice
responsibility of the user of this standard to establish appro-
4.1 Specimens are immersed in selected reagents for a
priate safety, health, and environmental practices and deter-
specified time and temperature. The specimens are recovered,
mine the applicability of regulatory limitations prior to use.
dried, and tested in accordance with selected methods, such as
For specific warnings, see Section 8.
Test Methods D1002 or D3164.
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard-
5. Significance and Use
ization established in the Decision on Principles for the
5.1 Thispracticeisdesignedtodeterminethegeneraleffects
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical of chemical reagents on the strength of the bonded system. It
Barriers to Trade (TBT) Committee. cannot distinguish between adsorption in the bulk adhesive or
penetration at the adhesive/substrate interface.
2. Referenced Documents
2 6. Apparatus
2.1 ASTM Standards:
B117 Practice for Operating Salt Spray (Fog) Apparatus 6.1 The apparatus consists of containers for test specimens
D471 Test Method for Rubber Property—Effect of Liquids and a cabinet for maintaining a temperature of 23 6 3°C (73 6
D543 Practices for Evaluating the Resistance of Plastics to 5°F). Other suitable apparatus is required for immersing
Chemical Reagents specimens above and below room temperature.
D907 Terminology of Adhesives
NOTE 1—Exercise care in the choice of materials with respect to
D1002 Test Method for Apparent Shear Strength of Single-
adherend and containers. Confirm that they are unaffected by the chemi-
Lap-Joint Adhesively Bonded Metal Specimens by Ten-
cals and solvents used in this practice.
6.2 Apparatus for making strength tests is specified in the
method for the property to be measured.
This practice is under the jurisdiction of ASTM Committee D14 on Adhesives
and is the direct responsibility of Subcommittee D14.80 on Metal Bonding
7. Reagents
Adhesives.
Current edition approved Nov. 1, 2017. Published November 2017. Originally
7.1 Directions for preparations of reagents are for approxi-
ɛ1
approved in 1946. Last previous edition approved in 2010 as D896 – 04 (2010) .
mately 1-L quantities. All percentages are by weight.
DOI: 10.1520/D0896-04R17.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
7.2 Standard chemical reagents are selected from the list
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
given in Practices D543. Standard oils and fuels are selected
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. from the list given in Test Method D471.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D896 − 04 (2017)
time is permissible upon agreement between the purchaser and the
7.3 Distilled Water—Freshlyprepareddistilledwaterisused
manufacturer. The alternative test temperature may be selected from the
wherever water is specified in this practice.
table in Practice D1151.
8. Supplementary Reagents (see 7.1)
10.2 A short time test is permissible for the purpose of
eliminating those materials that are unsuitable or unduly
8.1 Hydrocarbon Mixture No. 1:
affected by the reagents, performed on films or suitable
Isooctane (2,4-trimethylpentane) 600 mL
specimens of the adhesive prepared in accordance with the
Toluene 200 mL
Xylene 150 mL
manufacturer’s instructions with regard to drying time, cure,
etc.
8.2 Standard Jet Fuel No. 1:
Toluene 300 mL 10.3 Remove the individual specimen from the reagent.
Cyclohexane 600 mL
Rinse aqueous reagents off the specimen with distilled water.
Isooctane (2,4-trimethylpentane) 100 mL
Rinse off other reagents with a suitable organic solvent. Blot
n-Butyl disulfide 10 mL
n-Butyl mercaptan (equivalent to 0.005 0.125 g
the specimen dry with a clean dry cloth or blotting paper.
weight % of me
...
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