ASTM D2902-00(2006)

Standard Specification for Fluoropolymer Resin Heat-Shrinkable Tubing for Electrical Insulation

ABSTRACT
This specification applies to flexible fluoropolymer resin heat-shrinkable extruded tubing made from tetrafluoroethylene resin, copolymer of tetrafluoroethylene and hexafluoropropylene (FEP), and from perfluoroalkoxy (PFA) resin for use as electrical insulation. This specification covers three types of tubings, namely: Type I tubing, normally made by paste extrusion, and Type II and Type III tubings, normally made by melt extrusion. The finished compound shall be free of all foreign matter other than intended formulation additives. The material shall conform to the specified chemical and physical property requirements such as: (1) restricted shrinkage, (2) specific gravity, (3) longitudinal change, (4) tensile modulus at elongation, (5) volume resistivity, (6) dielectric breakdown voltage, (7) heat resistance, (8) low-temperature flexibility, and (9) melting point. The dimensional requirements after unrestrictive shrinkage such as inside diameter, wall thickness, and stock lengths are specified. The sampling and test methods to determine conformance to the specified requirements are given.
SCOPE
1.1 This specification applies to flexible heat-shrinkable extruded tubing made from tetrafluoroethylene resin, copolymer of tetrafluoroethylene and hexafluoropropylene, and from perfluoroalkoxy resin for use as electrical insulation.Note 1
This standard is similar but not identical to IEC 60684-3-240 to -243.
1.2 The values stated in inch-pound units are to be regarded as the standard except temperature which shall be stated in degrees Celsius. Values in parentheses are for information only.

General Information

• Status: Historical
• Publication Date: 31-Mar-2006
• ICS: 29.035.20 - Plastics and rubber insulating materials
• ICS: 83.140.10 - Films and sheets
• Technical Committee: D09 - Electrical and Electronic Insulating Materials
• Drafting Committee: D09.07 - Electrical Insulating Materials

Relations

• Replaces: ASTM D2902-00 - Standard Specification for Fluoropolymer Resin Heat-Shrinkable Tubing for Electrical Insulation
• Effective Date: 01-Apr-2006

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D2902 −00(Reapproved 2006) An American National Standard
Standard Specification for
Fluoropolymer Resin Heat-Shrinkable Tubing for Electrical
1
Insulation
This standard is issued under the fixed designation D2902; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
1.1 This specification applies to flexible heat-shrinkable
3.1 Definitions:
extruded tubing made from tetrafluoroethylene resin, copoly-
3.1.1 For definitions pertaining to electrical insulation, refer
mer of tetrafluoroethylene and hexafluoropropylene, and from
to Terminology D1711.
perfluoroalkoxy resin for use as electrical insulation.
3.1.2 For definitions pertaining to fire standards, refer to
NOTE 1—This standard is similar but not identical to IEC 60684–3–240
Terminology E176.
to –243.
1.2 The values stated in inch-pound units are to be regarded 4. Classification
as the standard except temperature which shall be stated in
4.1 Type I—Tubing made from tetrafluoroethylene polymer
degreesCelsius.Valuesinparenthesesareforinformationonly.
(TFE)andcapableofbeingheatshrunkatatemperatureof327
°C [621 °F].
2. Referenced Documents
2
2.1 ASTM Standards: 4.2 Type II—Tubing made from a copolymer of tetrafluoro-
ethylene and hexafluoropropylene (FEP) and capable of being
C618 Specification for Coal Fly Ash and Raw or Calcined
Natural Pozzolan for Use in Concrete heat shrunk at a temperature of 150 °C [302 °F].
D638 Test Method for Tensile Properties of Plastics
4.3 Type III—Tubing made from perfluoroalkoxy resin
D1711 Terminology Relating to Electrical Insulation
(PFA)andcapableofbeingheatshrunkatatemperatureof175
D2116 Specification for FEP-Fluorocarbon Molding and
°C [347 °F].
Extrusion Materials
D2671 Test Methods for Heat-Shrinkable Tubing for Elec-
5. Ordering Information
trical Use
5.1 When ordering to this specification, the purchaser must
D3307 Specification for Perfluoroalkoxy (PFA)-
Fluorocarbon Resin Molding and Extrusion Materials state the size, and type of the required tubing.
D3636 Practice for Sampling and Judging Quality of Solid
Electrical Insulating Materials 6. Materials and Manufacture
D4895 Specification for Polytetrafluoroethylene (PTFE)
6.1 The compound used in the manufacture of this tubing
Resin Produced From Dispersion
shall be modified fluoropolymer resin, and the finished com-
E176 Terminology of Fire Standards
pound shall be free of all foreign matter other than intended
2.2 IEC Standards:
formulation additives as appropriate.
60684–3–240 to –243 Flexible insulating sleeving, Part 3,
3
Sheets 240 to 243: Heat-shrinkable PTFE sleeving 6.2 Type I tubing is normally made by paste extrusion.Type
II and Type III tubings are normally made by melt extrusion.
All types are expanded by mechanical means.
1
This specification is under the jurisdiction of ASTM Committee D09 on
Electrical and Electronic Insulating Materials and is the direct responsibility of
Subcommittee D09.07 on Flexible and Rigid Insulating Materials.
7. Chemical and Physical Property Requirements
Current edition approved April 1, 2006. Published April 2006. Originally
approved in 1970. Last previous edition approved in 2000 as D2902 – 00. DOI: 7.1 The material shall conform to the chemical and physical
10.1520/D2902-00R06.
property requirements specified in Table 1.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
7.2 Every lot of material manufactured should be tested for
Standards volume information, refer to the standard’s Document Summary page on
dimensional requirements and restricted shrinkage. Other re-
the ASTM website.
3
quirements may be tested less frequently or with a frequency
Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
4th Floor, New York, NY 10036. agreed upon between seller and purchaser.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D2902−00 (2006)
TABLE 1 Chemical and Physical Property Requirements
Requirement
Property
Type I Type II Type III
A
Restricted shrinkage, Procedure B, 2000 V, 10 min no cracking no cracking no cracking
Specific gravity 2.13 to 2.18 2.12 to 2.20 2.13 to 2.20
Longitudinal change, max, % + 20 ±15 ±15
Tensile modulus at 200 % elongation, min, psi [MPa] Test Method D638 2000 [13.8] 1500 [10.3] 2500 [17.3]
2 in./min [50 mm/min]
B 16 16 16
Volume resistivity , ohm-cm, at standard laboratory atmosphere, min 10 10 10
Dielectric breakdown voltage, min kV:
Wall t
...