ASTM D2754-10

Standard Specification for High-Temperature Glass Cloth Pressure-Sensitive Electrical Insulating Tape

ABSTRACT
This specification covers the requirements for two types of high-temperature electrical insulating tape consisting of glass cloth coated on one side with a pressure-sensitive adhesive. Type I, which is subdivided into two grades (Grade A and B) according to thickness, is woven glass cloth with silicone adhesive. Type II, on the other hand, is woven glass cloth impregnated with polytetrafluoroethylene, silicone adhesive. Tapes shall undergo tests that shall examine their conformance to the following requirements: standard thickness, width, and length; breaking strength; dielectric breakdown; adhesion strength both to steel and backing; high-humidity insulation resistance; unwind force; and accelerated aging.
SCOPE
1.1 This specification covers requirements for high-temperature electrical insulating tape consisting of glass cloth coated on one side with a pressure-sensitive adhesive.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information purposes only.

General Information

• Status: Historical
• Publication Date: 30-Apr-2010
• ICS: 29.035.20 - Plastics and rubber insulating materials
• Technical Committee: D09 - Electrical and Electronic Insulating Materials
• Drafting Committee: D09.07 - Electrical Insulating Materials

Relations

• Replaces: ASTM D2754-99(2004) - Standard Specification for High-Temperature Glass Cloth Pressure-Sensitive Electrical Insulating Tape
• Effective Date: 01-May-2010

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D2754 −10
StandardSpecification for
High-Temperature Glass Cloth Pressure-Sensitive Electrical
1
Insulating Tape
This standard is issued under the fixed designation D2754; 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* 5.2 The silicone pressure-sensitive adhesive coating shall be
smooth and uniform and as free from lumps and bare spots as
1.1 This specification covers requirements for high-
best commercial practice will permit. The adhesive shall not
temperature electrical insulating tape consisting of glass cloth
transfer when the tape is unwound from the roll.
coated on one side with a pressure-sensitive adhesive.
1.2 The values stated in SI units are to be regarded as the
6. Requirements
standard. The values given in parentheses are provided for
information purposes only.
6.1 All tapes shall meet the requirements given in Table 1
for the types specified.
2. Referenced Documents
2
7. Standard Rolls
2.1 ASTM Standards:
D1000 Test Methods for Pressure-Sensitive Adhesive-
7.1 The standard widths and lengths shall be selected from
Coated Tapes Used for Electrical and Electronic Applica-
the following:
tions
7.1.1 Widths:
D1711 Terminology Relating to Electrical Insulation
mm in. mm in.
3. Terminology
1 7
6 ⁄4 22 ⁄8
3
9 ⁄8 25 1
3.1 Definitions—For definitions of terms in this specifica-
1 1
12 ⁄2 30 1 ⁄4
tion refer to Terminology D1711.
5 1
15 ⁄8 38 1 ⁄2
3
19 ⁄4 50 2
4. Classification
Widths greater than 2 in. (50 mm) shall be agreed upon
4.1 This specification covers two types of glass cloth tapes,
between the purchaser and the seller.
as follows:
7.1.2 Lengths:
4.1.1 Type I—Woven glass cloth with silicone adhesive.
mft
4.1.1.1 Grade A—0.18 mm (0.007 in.).
4.1.1.2 Grade B—0.25 mm (0.010 in.). 620
20 66
4.1.2 Type II—Woven glass cloth impregnated with
33 108
polytetrafluoroethylene, silicone adhesive, nominal thickness
0.13 mm (0.005 in.). 7.1.3 Nonstandard widths and lengths are permissible if
agreed upon between the purchaser and seller.
5. Materials and Manufacture
8. Test Methods
5.1 The tape backing shall consist of woven glass fibers.
8.1 The selection of rolls, conditioning, and testing shall be
in accordance with Test Methods D1000.
1
This specification is under the jurisdiction of ASTM Committee D09 on
Electrical and Electronic Insulating Materials and is the direct responsibility of
9. Rejection
Subcommittee D09.07 on Flexible and Rigid Insulating Materials.
Current edition approved May 1, 2010. Published June 2010. Originally
9.1 If the test results of any roll do not conform to the
approved in 1968. Last previous edition approved in 2004 as D2754–99(2004).
DOI: 10.1520/D2754-10. requirements prescribed in the specification, two additional
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
rolls shall be selected and tested. If one of the two additional
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
sample rolls also does not conform to the requirements, the lot
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. may be r
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
An American National Standard
Designation:D2754–99 (Reapproved 2004) Designation: D2754 – 10
Standard Specification for
High-Temperature Glass Cloth Pressure-Sensitive Electrical
1
Insulating Tape
This standard is issued under the fixed designation D2754; 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*
1.1 This specification covers requirements for high-temperature electrical insulating tape consisting of glass cloth coated on one
side with a pressure-sensitive adhesive.
1.2 The values stated in SI units are to be regarded as the standard.The values given in parentheses are provided for information
purposes only.
2. Referenced Documents
2
2.1 ASTM Standards:
D1000 Test Methods for Pressure-Sensitive Adhesive-Coated Tapes Used for Electrical and Electronic Applications
D1711 Terminology Relating to Electrical Insulation
3. Terminology
3.1 Definitions—For definitions of terms in this specification refer to Terminology D1711.
4. Classification
4.1 This specification covers two types of glass cloth tapes, as follows:
4.1.1 Type I—Woven glass cloth with silicone adhesive.
4.1.1.1 Grade A—0.18 mm (0.007 in.).
4.1.1.2 Grade B—0.25 mm (0.010 in.).
4.1.2 Type II—Woven glass cloth impregnated with polytetrafluoroethylene, silicone adhesive, nominal thickness 0.13 mm
(0.005 in.).
5. Materials and Manufacture
5.1 The tape backing shall consist of woven glass fibers.
5.2 The silicone pressure-sensitive adhesive coating shall be smooth and uniform and as free from lumps and bare spots as best
commercial practice will permit. The adhesive shall not transfer when the tape is unwound from the roll.
6.Requirements Requirements
6. Requirements
6.1 All tapes shall meet the requirements given in Table 1 for the types specified.
7. Standard Rolls
7.1 The standard widths and lengths shall be selected from the following:
7.1.1 Widths:
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.
´1
Current edition approved March 10, 1999. Published May 1999. Originally approved in 1968. Last previous edition approved in 1993 as D2754–89 (1993) . DOI:
10.1520/D2754-99R04.
Current edition approved May 1, 2010. Published June 2010. Originally approved in 1968. Last previous edition approved in 2004 as D2754–99(2004). DOI:
10.1520/D2754-10.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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D2754 – 10
TABLE 1 Detail Requirements
Type I
Requirement Type II
Grade A Grade B
Total thickness, nominal, mm (in.) 0.18 6 0.025 0.25 6 0.025 0.13 6 0.025
(0.007 6 0.001) (0.10 6 0.001) (0.005 6 0.001)
1 1 1
Width, as specified, mm (in.) 60.8 (6 ⁄32 ) 60.8 (6 ⁄32 ) 60.8 (6 ⁄32)
Length, as specified −1% −1% −1%
Breaking strength, min, avg N/10 mm (lbf/in.) 216 (120) 216 (120) 90.2 (50)
Dielectric breakdown, min, avg V 2000 2500 3000
Adhesion strength, min, N/10 mm (ozf/in.) avg, after dwell time on drum of 20 65min
Adhesion strength, min, N/10 mm (ozf/in.)
Method B:
To steel 2.8 (25) 2.8 (25) 2.2 (20)
To backing 1.7 (15) 1.7 (15) no requirement
High-humidity insulation resistance, min, median, MV 50 100 1000
A
Unwind force, max, avg, N/10 mm (ozf/in.) width 11.0 (100) 16.5 (150) 11.0 (100)
Unwind force, max, avg, N/10 mm (ozf/in.) width 11.0 (100) 16.5 (150) 11.0 (100)
Accelerated aging, effect of on dielectric breakdown, percent of original after 16 h 100 100 100
at 250 °C, min
Adhesion strength to backing, Method B, % of original after 168 h at 225 °C, min 100 100 no requirement
Adhesion strength to backing, % of original after 168 h at 225 °C, min 100 100 no requirement
A
See Test Methods D1000, Test Method B.
mm in. mm in.
1 7
6 ⁄4 22 ⁄8
3
9 ⁄8 25 1
1 1
12 ⁄2 30 1 ⁄4
5 1
15 ⁄8 38 1 ⁄2
3
19 ⁄4 50 2
Widths greater than 2 in. (50 mm) shall be agreed upon between the purchaser and the se
...