ASTM D6053-00

Designation: D 6053 – 00 An American National Standard
Standard Test Method for
Determination of Volatile Organic Compound (VOC) Content
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of Electrical Insulating Varnishes
This standard is issued under the fixed designation D 6053; 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.
1. Scope 3.1.2 For definitions of other terms pertaining to this test
method, refer to Terminology D 1711.
1.1 This test method is used to determine the amount of
volatile organic compounds emitted during cure of electrical
4. Significance and Use
insulating varnishes.
4.1 This test method determines the volatile organic content
1.2 The values stated in SI units are the standard.
of an electrical insulating varnish. It utilizes a procedure where
1.3 This standard does not purport to address all of the
dishes containing a known amount of varnish are baked and the
safety concerns, if any, associated with its use. It is the
amount of volatile organic compound is measured. Calcula-
responsibility of the user of this standard to establish appro-
tions are performed to express this in g/L or lb/gal. This test
priate safety and health practices and determine the applica-
method is applicable to all types of varnishes. However,
bility of regulatory limitations prior to use. See Section 7 for
waterborne varnishes while baked under the same conditions
specific precautions.
need to have water content determined and calculations per-
2. Referenced Documents formed in accordance with Practice D 3960.
4.1.1 During the cure of electrical insulating varnishes some
2.1 ASTM Standards:
organic material is volatilized. A determination of the amount
D 115 Test Methods for Testing Solvent Containing Var-
2
that is volatilized is useful for estimating the amount of cured
nishes Used for Electrical Insulation
2 varnish on electrical units and volatile organic emissions from
D 1711 Terminology Relating to Electrical Insulation
a manufacturing facility.
D 3960 Practice for Determining Volatile Organic Com-
3
pound (VOC) Content of Paints and Related Coatings
5. Interferences
D 4733 Test Methods for Solventless Electrical Insulating
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5.1 The amount of volatile organic content determined by
Varnishes
this test method is known to be affected by the rate of air
D 5423 Specification for Forced-Convection Laboratory
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exchange in the baking oven.
Ovens for Evaluation of Electrical Insulation
6. Apparatus
3. Terminology
6.1 Weighing Dishes, aluminum, approximately 60 mm
3.1 Definition of Term Specific to This Standard:
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(2 ⁄8 in.) in diameter and 15 mm ( ⁄8 in.) high on the sides.
3.1.1 varnish, electrical insulating, n— a liquid resin sys-
6.2 Forced-Convection Oven, see Specification D 5423-
tem that is applied to and cured on electrical components
Type II.
providing electrical, mechanical, and environmental protec-
6.3 Desiccator.
tion.
3.1.1.1 Discussion—There are two types of electrical insu-
7. Hazards
lating varnish: solvent-containing and solventless. The solvent-
7.1 Precaution—Do not use varnish at temperatures above
containing varnish is a solution, dispersion, or emulsion of a
the flash point when inadequate ventilation, and the possibility
polymer or mixture of polymers in a volatile, nonreactable
of flames or sparks exist. Store varnish in sealed containers.
liquid. The solventless type is a liquid resin system free of
volatile, nonreactable solvents.
8. Procedure
8.1 Weigh three aluminum dishes to the nearest 0.01 g.
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This standard is under the jurisdiction of ASTM Committee D09 on Electrical
8.2 Add approximately 2 to 10 g of the varnish to be tested
and Electronic Insulating Materials and is the direct responsibility of Subcommittee
to each dish.
D09.01 on Electrical Insulating Varnishes, Powders, and Encapsulating Compounds.
Current edition approved Apr. 10, 2000. Published June 2000. Originally
8.3 Weigh each dish and varnish to the nearest 0.01 g.
published as D 6053-96. Last previous edition D 6053-98.
8.4 Roll the resin around in the dishes to ensure an even
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coating.
Annual Book of ASTM Standards, Vol 10.01.
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Annual Book of ASTM Standards, Vol 06.01. 8.5 Place the dishes in a forced-convection oven at 150° 6
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Annual Book of ASTM Standards, Vol 10.02.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
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D 6053
2°C. Other temperatures may be used when agreed to by 9. Report
interested parties.
9.1 Report the following information:
8.6 After 61 6 1 min remove the dishes from the oven.
9.1.1 Identity of the varnish used,
8.7 Cool in desiccator.
9.1.2 Average VOC in g/L or lb/gal,
8.8 Weigh each dish to the nearest 0.01 g. 9.1.3 Temperature that dishes were baked, and
8.9 Calculate the volatile organ
...