ASTM D6053-03

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An American National Standard
Designation:D6053–03
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 3.1.1.1 Discussion—There are two types of electrical insu-
lating varnish: solvent-containing and solventless.The solvent-
1.1 This test method covers the determination of the amount
containing varnish is a solution, dispersion, or emulsion of a
of volatile organic compounds emitted during cure of electrical
polymer or mixture of polymers in a volatile, nonreactable
insulating varnishes.
liquid. The solventless type is a liquid resin system free of
1.2 The values stated in SI units are the standard.
volatile, nonreactable solvents.
1.3 This standard does not purport to address all of the
3.1.2 For definitions of other terms pertaining to this test
safety concerns, if any, associated with its use. It is the
method, refer to Terminology D 1711.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4. Significance and Use
bility of regulatory limitations prior to use. See Section 7 for
4.1 This test method determines the volatile organic content
specific precautions.
of an electrical insulating varnish. It utilizes a procedure where
2. Referenced Documents dishescontainingaknownamountofvarnisharebakedandthe
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amount of volatile organic compound is measured. Calcula-
2.1 ASTM Standards:
tions are performed to express this in g/L or lb/gal. This test
D 115 Test Methods for Testing Solvent Containing Var-
method is applicable to all types of varnishes. However,
nishes Used for Electrical Insulation
waterborne varnishes while baked under the same conditions
D 1711 Terminology Relating to Electrical Insulation
need to have water content determined and calculations per-
D 3960 Practice for Determining Volatile Organic Com-
formed in accordance with Practice D 3960.
pound (VOC) Content of Paints and Related Coatings
4.1.1 During the cure of electrical insulating varnishes some
D 4733 Test Methods for Solventless Electrical Insulating
organic material is volatilized. A determination of the amount
Varnishes
that is volatilized is useful for estimating the amount of cured
D 5423 Specification for Forced-Convection Laboratory
varnish on electrical units and volatile organic emissions from
Ovens for Evaluation of Electrical Insulation
a manufacturing facility.
E 691 Standard Practice for Conducting an Interlaboratory
Study to Determine the Precision of a Test Method
5. Interferences
3. Terminology 5.1 The amount of volatile organic content determined by
this test method is known to be affected by the rate of air
3.1 Definition of Term Specific to This Standard:
exchange in the baking oven.
3.1.1 varnish, electrical insulating, n— a liquid resin sys-
tem that is applied to and cured on electrical components
6. Apparatus
providing electrical, mechanical, and environmental protec-
3
6.1 Weighing Dishes, aluminum, approximately 60 mm (2 ⁄8
tion.
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in.) in diameter and 15 mm ( ⁄8 in.) high on the sides.
6.2 Forced-Convection Oven, see Specification D 5423-
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This standard is under the jurisdiction of ASTM Committee D09 on Electrical Type II.
and Electronic Insulating Materials and is the direct responsibility of Subcommittee
6.3 Desiccator.
D09.01onElectricalInsulatingVarnishes,Powders,andEncapsulatingCompounds.
Current edition approved Oct. 1, 2003. Published November 2003. Originally
7. Hazards
approved in 1996. Last previous edition approved in 2000 as D 6053 - 00.
7.1 Precaution—Do not use varnish at temperatures above
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
the flash point when inadequate ventilation, and the possibility
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
of flames or sparks exist. Store varnish in sealed containers.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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D6053–03
8. Procedure
D = the density of the varnish in g/Las determined byTest
Methods D 115 or D 4733.
8.1 Weigh three aluminum dishes to the nearest 0.01 g.
8.2 Add approximately 2 to 10 g of the varnish to be tested
C
VOC 5 expressed in g/L (2)
to each dish. V
8.3 Weigh each dish and varnish to the nearest 0.01
...