ASTM D4142-89(1996)e1
(Guide)Standard Guide for Testing Epoxy Resins
Standard Guide for Testing Epoxy Resins
SCOPE
1.1 This guide covers methods for testing epoxy resins as listed in Table 1. All of the methods were tested by interlaboratory participation in accordance with usual ASTM guidelines. Each method specifies a recommended amount of sample for starting a separate analysis, but several of the procedures can be conducted on the same starting material if so desired. For example, viscosity, color, and density could be run on the same specimen.
1.2 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems 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.
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Designation: D 4142 – 89 (Reapproved 1996)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Guide for
Testing Epoxy Resins
This standard is issued under the fixed designation D 4142; 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.
e NOTE—Keywords were added editorially in October 1996.
TABLE 1 Methods for Testing Epoxy Resins
1. Scope
Test Method Section ASTM Designation
1.1 This guide covers methods for testing epoxy resins as
Epoxy content 4 D 1652
listed in Table 1. All of the methods were tested by interlabo-
Hydrolyzable chlorine 5 D 1726
ratory participation in accordance with usual ASTM guide-
Total chlorine 6 D 1847
lines. Each method specifies a recommended amount of sample
Viscosity 7 D 445, D1545
Color 8 D 1544, D1209
for starting a separate analysis, but several of the procedures
Density 9 D 1475
can be conducted on the same starting material if so desired.
Nonvolatile content 10 D 1259
For example, viscosity, color, and density could be run on the
Acid value 11 D 1639
same specimen.
1.2 This standard does not purport to address all of the D 1847 Test Methods for Total Chlorine Content of Epoxy
safety concerns, if any, associated with its use. It is the Resins
responsibility of the user of this standard to establish appro-
3. Significance and Use
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. 3.1 This guide directs the user to test methods that deter-
mine properties generally accepted as standard test items for
2. Referenced Documents
clasification of epoxy resins.
2.1 ASTM Standards:
4. Epoxy Content
D 445 Test Method for Kinematic Viscosity of Transparent
and Opaque Liquids (and the Calculation of Dynamic 4.1 The epoxy content of epoxy resins is determined by
reacting a solution of the resin with a standard solution of
Viscosity)
hydrogen bromide in glacial acetic acid. The quantity of acid
D 1209 Test Method for Color of Clear Liquids (Platinum-
consumed is a measure of the epoxy content. Test Methods
Cobalt Scale)
D 1652 was found to have a repeatability of 2 % of the epoxy
D 1259 Test Methods for Nonvolatile Content of Resin
content and a reproducibility of 6 % of the epoxy content.
Solutions
D 1475 Test Method for Density of Paint, Varnish, Lacquer,
5. Hydrolyzable Chlorine
and Related Products
5.1 Test Method D 1726 covers the determination of the
D 1544 Test Method for Color of Transparent Liquids
easily hydrolyzable chlorine content of liquid epoxy resins in
(Gardner Color Scale)
concentrations below 1 weight %. The specimen is refluxed
D 1545 Test Method for Viscosity of Transparent Liquids
with a known amount of a standard alcoholic potassium
by Bubble Time Method
hydroxide solution. The amount of hydroxide consumed is
D 1639 Test Method for Acid Value of Organic Coating
measured by titration and corresponds to the hydrolyzable
Materials
chlorine content of the resin. By interlaboratory testing, the
D 1652 Test Method for Epoxy Content of Epoxy Resins
repeatability was found to be 0.02 %, and the reproducibility
D 1726 Test Method for Hydrolyzable Chlorine Content of
was found to be 0.05 %, both absolute.
Liquid Epoxy Resins
6. Total Chlorine
This guide is under the jurisdiction of ASTM Committee D-1 on Paint and
6.1 Organic and inorganic chlorine compounds are deter-
Related Coatings, Materials, and Applications and is the direct responsibility of
mined in epoxy resins in accordance with Test Methods
Subcommittee D01.33 on Polymers and Resins.
Current edition approved April 28, 1989. Published June 1989. Originally D 1847. The resin specimen is oxidized by combustion in a
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published as D 4142 – 82. Last previous edition D 4142 – 82 .
bomb containing oxygen under pressure. The chlorides formed
Annual Book of ASTM Standards, Vol 05.01.
a
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