ASTM D3214-96

Standard Test Methods for Coating Powders and Their Coatings Used for Electrical Insulation (Withdrawn 2002)

SCOPE
1.1 These test methods cover the evaluation of the properties of organic resinous powders and their fused coatings used for electrical insulation.  Note 1-These test methods do not apply to ceramic, glass, or metal powder.
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. For specific hazard statements, see Section 5.

General Information

• Status: Withdrawn
• Publication Date: 31-Dec-1995
• Withdrawal Date: 09-Jan-2002
• ICS: 29.035.99 - Other insulating materials
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.51 - Powder Coatings

Relations

• Referred By: ASTM D1711-22 - Standard Terminology Relating to Electrical Insulation
• Effective Date: 01-Jan-1996

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.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 3214 – 96
Standard Test Methods for
Coating Powders and Their Coatings Used for Electrical
Insulation
This standard is issued under the fixed designation D 3214; 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 D 621 Test Methods for Deformation of Plastics Under
Load
1.1 These test methods cover the evaluation of the proper-
D 792 Test Methods for Specific Gravity (Relative Density)
ties of organic resinous powders and their fused coatings used
and Density of Plastics by Displacement
for electrical insulation.
D 1040 Specification for Uninhibited Mineral Oil for Use in
NOTE 1—These test methods do not apply to ceramic, glass, or metal
Transformers and in Oil Circuit Breakers
powder.
D 1895 Test Methods for Apparent Density, Bulk Factor,
1.2 The values stated in SI units are to be regarded as the
and Pourability of Plastic Materials
standard. The values given in parentheses are for information
D 1898 Practice for Sampling of Plastics
only.
D 1921 Test Methods for Particle Size (Sieve Analysis) of
1.3 This standard does not purport to address all of the
Plastic Materials
safety concerns, if any, associated with its use. It is the
D 2240 Test Method for Rubber Property—Durometer
responsibility of the user of this standard to establish appro-
Hardness
priate safety and health practices and determine the applica-
D 2304 Test Method for Thermal Evaluation of Rigid Elec-
bility of regulatory limitations prior to use. For specific hazard
trical Insulating Materials
statements, see Section 5.
D 2967 Test Method for Edge Coverage of Coating Pow-
ders
2. Referenced Documents
D 4217 Test Method for Gel Time of Thermosetting Coat-
2.1 ASTM Standards:
ing Powder
D 149 Test Method for Dielectric Breakdown Voltage and
D 4242 Test Method for Glass Plate Flow for Thermosetting
Dielectric Strength of Solid Electrical Insulating Materials
Coating Powders
at Commercial Power Frequencies
2.2 National Fire Protection Association Bulletins:
D 150 Test Methods for AC Loss Characteristics and Per-
No. 33 Spray Finishing
mittivity (Dielectric Constant) of Solid Electrical Insulat-
No. 654 Dust Explosion Prevention Plastics Industry
ing Materials
3. Terminology
D 257 Test Methods for D-C Resistance or Conductance of
Insulating Materials
3.1 Definitions:
D 522 Test Methods for Mandrel Bend Test of Attached
3.1.1 coating powder, n—a heat-fusible, finely divided,
Organic Coatings
solid, resinous material to form electrical insulating coatings.
D 523 Test Method for Specular Gloss
3.1.1.1 Discussion—The coating powder may contain fill-
D 609 Practice for Preparation of Cold-Rolled Steel Panels
ers, colorants, curing agents, etc., consistent with producing the
for Testing Paint, Varnish, Conversion Coatings, and
desired coatings. The powder is applied by various methods
Related Coating Products
such as spraying, sprinkling, or dipping. Usually hot parts are
D 618 Practice for Conditioning Plastics and Electrical
used. Heat causes the powder to melt and flow into a dense
Insulating Materials for Testing
coating.
3.1.2 powder coating, n—a coating produced by the use of
a heat-fusible coating powder.
These test methods are under the jurisdiction of ASTM Committee D-1 on Paint
and Related Coatings, Materials, and Applications and are the direct responsibility
of Subcommittee D01.51 on Powder Coatings. Discontinued, see 1979 Annual Book of ASTM Standards, Part 40.
Current edition approved March 10, 1996. Published May 1996. Originally Annual Book of ASTM Standards, Vol 08.02.
published as D 3214 – 73. Last previous edition D 3214 – 91 (1995). Annual Book of ASTM Standards, Vol 09.01.
2 8
Annual Book of ASTM Standards, Vol 10.01. Annual Book of ASTM Standards, Vol 10.02.
3 9
Annual Book of ASTM Standards, Vol 06.01. Available from the National Fire Protection Assn., International, 60 Battery-
Annual Book of ASTM Standards, Vol 08.01. march St., Boston, MA 02110.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D 3214
3.1.2.1 Discussion—Some powder coatings thermoset after 9.1.5 Weight Loss on Curing:
fusion at the recommended temperature and there should be
9.1.5.1 Weigh a powder specimen of 1 6 0.1 g to the nearest
little loss of volatile material. In general, the coating should be 0.001 g in an aluminum weighing dish approximately 50 mm
smooth, continuous, electrically insulating, and adherent to the
in diameter. Heat the evenly spread powder at the time and
metal, showing no evidence of unfused particles, holes, or temperature recommended to fuse and cure the coating. Cool
pores.
the specimen to 23 6 1°C and reweigh to the nearest 0.001 g.
9.1.5.2 Calculate the percent weight loss on the basis of the
4. Summary of Test Methods
original powder weight.
4.1 These test methods describe the specific procedures for
9.2 Cured Coatings:
specimen preparation and testing of powders and their coatings
9.2.1 Specific Gravity:
2 2
used for electrical insulation. The powders are applied to metal
9.2.1.1 Test Specimens—Approximately 6.45 cm (1 in. )of
surfaces and fused with heat to form a coating. Wherever
free film prepared in accordance with 7.2. Remove all mold
possible, ASTM methods are referenced with notes on special
release by washing in a solvent that does not affect the
treatment that may be required.
material.
9.2.1.2 Procedure—Test in accordance with Test Methods
5. Hazards
D 792, Method A.
5.1 Warning—The powders may be subject to dust explo-
9.2.2 Electric Strength:
sions under certain conditions (see National Fire Protection
9.2.2.1 Test Specimens—Use a steel panel in accordance
Association Bulletins No. 33 and No. 654).
with 7.1, unless otherwise specified.
5.2 Warning—Provide adequate ventilation, and avoid
9.2.2.2 Procedure—Test in accordance with Test Method
breathing the dust or fumes and contact with skin since many
D 149, using the short-time procedure at a rate of rise of 0.5
of the reactive materials used in coating powders have been
kV/s in uninhibited oil in accordance with Specification
reported to be toxic or cause irritation to sensitive skin.
D 1
...