Standard Test Method for Hydrogen Ion Concentration of Dry Adhesive Films

SCOPE
1.1 This test method covers determination of the hydrogen ion concentration (pH), acidity, or alkalinity, of organic adhesives in the cured dry film form. This test method is not designed to apply to pressure-sensitive adhesives.  
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
09-Mar-2001
Technical Committee
Drafting Committee
Current Stage
Ref Project

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ASTM D1583-00 - Standard Test Method for Hydrogen Ion Concentration of Dry Adhesive Films
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 1583 – 00
Standard Test Method for
Hydrogen Ion Concentration of Dry Adhesive Films
This standard is issued under the fixed designation D 1583; 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 (e) 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 6. Apparatus
1.1 This test method covers determination of the hydrogen 6.1 pH Meter, capable of making measurements to 60.05
ion concentration (pH), acidity, or alkalinity, of organic adhe- pH.
sives in the cured dry film form. This test method is not 6.2 Glass Vial, capable of properly immersing the electrode
designed to apply to pressure-sensitive adhesives. of the pH meter when filled with the specified test solution.
1.2 The values stated in SI units are to be regarded as the 6.3 Distilled Water, with a pH between 5.6 and 7.0 at 23 6
standard. The values given in parentheses are for information 1°C (73.4 6 1.8°F).
only. 6.4 Glass Sheet, free from scratches, approximately 200 by
1.3 This standard does not purport to address all of the 250 mm (8 by 10 in.) in size for use in oven.
safety concerns, if any, associated with its use. It is the 6.5 Circulating-Air Oven, capable of maintaining tempera-
responsibility of the user of this standard to establish appro- tures of 23 6 1°C (73.4 6 1.8°F) to 150 6 1°C (302 6 1.8°F).
priate safety and health practices and determine the applica-
7. Sampling
bility of regulatory limitations prior to use.
7.1 Except in special cases, take a composite sample when
2. Referenced Documents
possible from three or more separate containers, chosen at
2.1 ASTM Standards: random. Also take samples from containers which appear to be
D 907 Terminology of Adhesives nonrepresentative, and test such samples separately. Place the
E 70 Test Method for pH of Aqueous Solutions with the samples immediately in airtight glass containers filled to
Glass Electrode prevent excessive air space above the adhesive and transport
them to the testing laboratory in these containers. Take
3. Terminology
precautions to reduce evaporation or drying to a minimum.
3.1 Definitions— Many of the terms in this test method are Thoroughly mix the adhesive in the container if there is a
defined in Terminology D 907.
tendency for the materials to separate before a sample is taken.
Use the required catalysts and hardeners from the same
4. Summary of Test Method
shipment as the other adhesive components if the components
4.1 Collect samples of the adhesive to be tested with any
are furnished as a unit by the adhesive manufacturer.
hardener necessary.
8. Test Specimens
4.2 Dry adhesive films are prepared.
4.3 The adhesive films are ground and mixed with distilled
8.1 Room-Temperature Setting Adhesives—Mix adhesives
water. that form dry films at room temperature in accordance with the
4.4 The pH is determined using a pH meter in accordance
recommendations of the manufacturer. Prepare a film of the
with Test Method E 70. adhesive on glass or other inert material to which the adhesive
does not adhere and allow it to dry at 23 6 1°C (73.4 6 1.8°F).
5. Significance and Use
Spread the adhesive film to a thickness less than 0.51 mm
5.1 The pH of an adhesive may be a factor whereby the
(0.020 in.).
adherends or the adhesive itself may be adversely affected in
8.2 Elevated-Temperature Setting Adhesives—Mix adhe-
time by the acidity or alkalinity.
sives that require heat to form a dry film in accordance with the
recommendations of the manufacturer. Prepare a film of the
adhesive on glass or other inert material to which the adhesive
This test method is under the jurisdiction of ASTM Committee D-14 on
does not adhere, and cure it in accordance with the recommen-
Adhesives and is the direct responsibility of Subcommittee D14.30 on Wood
dations of the manufacturer. The adhesive film should be less
Adhesives.
than 0.51 mm (0.020 in.) in thickness. In the absence of
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