ASTM D2148-13
(Test Method)Standard Test Methods for Bondable Silicone Rubber Tapes Used for Electrical Insulation
Standard Test Methods for Bondable Silicone Rubber Tapes Used for Electrical Insulation
SIGNIFICANCE AND USE
4.1 Self-adhesion is a primary initial property since it affects layer-to-layer bonding. The integrity of the bond can significantly affect the electrical and physical performance of the insulation system. Therefore, the degree of self-adhesion is directly related to apparatus performance.
4.2 A high degree of self-adhesion is desirable for most electrical applications. In this test, a short unwinding length indicates a high degree of self-adhesion.
4.3 This test method has been found useful as a quality control test for lot acceptance.
SCOPE
1.1 These test methods cover tests for bondable silicone rubber tapes which form a sealed structure either with the application of heat (and pressure if needed) or by the process of auto-adhesion (self-fusing).
1.2 The methods appear in the following sections:
Test Method
Section
Adhesion
3 – 9
Bond Strength
10 – 17
Dielectric Breakdown Voltage
18 – 25
Hardness
40
Length
32 and 33
Thickness
26 – 31
Width
35 – 39
1.3 The values stated in inch-pound units are to be regarded as standard, except for °C. The values in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 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 a specific hazard statement see 22.1.1.
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Designation: D2148 − 13
Standard Test Methods for
Bondable Silicone Rubber Tapes Used for Electrical
1
Insulation
This standard is issued under the fixed designation D2148; 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.
3
1. Scope* lation (Withdrawn 2013)
D1000 Test Methods for Pressure-Sensitive Adhesive-
1.1 These test methods cover tests for bondable silicone
Coated Tapes Used for Electrical and Electronic Applica-
rubber tapes which form a sealed structure either with the
tions
application of heat (and pressure if needed) or by the process
D1458 Test Methods for Fully Cured Silicone Rubber-
of auto-adhesion (self-fusing).
Coated Glass Fabric and Tapes for Electrical Insulation
1.2 The methods appear in the following sections: D2240 Test Method for Rubber Property—Durometer Hard-
ness
Test Method Section
D6054 Practice for Conditioning Electrical Insulating Mate-
3
Adhesion 3–9
rials for Testing (Withdrawn 2012)
Bond Strength 10–17
2.2 ASTM Adjuncts:
Dielectric Breakdown Voltage 18–25
4
Hardness 40
Tack tester (one drawing)
Length 32 and 33
Thickness 26–31
ADHESION
Width 35–39
3. Scope
1.3 The values stated in inch-pound units are to be regarded
as standard, except for °C. The values in parentheses are
3.1 This test method covers the determination of the self-
mathematical conversions to SI units that are provided for
adhesion of unsupported, self-fusing silicone rubber rectangu-
information only and are not considered standard.
lar and taper-edge (Note 1) tape designed for use as electrical
insulation.
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
NOTE 1—Taper-edge tape includes such cross sections as triangular,
responsibility of the user of this standard to establish appro- lens, etc.
priate safety and health practices and determine the applica-
4. Significance and Use
bility of regulatory limitations prior to use. For a specific
4.1 Self-adhesionisaprimaryinitialpropertysinceitaffects
hazard statement see 22.1.1.
layer-to-layer bonding. The integrity of the bond can signifi-
cantly affect the electrical and physical performance of the
2. Referenced Documents
insulation system. Therefore, the degree of self-adhesion is
2
2.1 ASTM Standards:
directly related to apparatus performance.
D149 Test Method for Dielectric Breakdown Voltage and
4.2 A high degree of self-adhesion is desirable for most
Dielectric Strength of Solid Electrical Insulating Materials
electrical applications. In this test, a short unwinding length
at Commercial Power Frequencies
indicates a high degree of self-adhesion.
D374 Test Methods for Thickness of Solid Electrical Insu-
4.3 This test method has been found useful as a quality
control test for lot acceptance.
1
These methods are under the jurisdiction of ASTM Committee D09 on
5. Apparatus
Electrical and Electronic Insulating Materials and are the direct responsibility of
Subcommittee D09.07 on Flexible and Rigid Insulating Materials. 5.1 Inclined Mandrel Tack Test Fixture— A suggested fix-
4
Current edition approved Nov. 1, 2013. Published November 2013. Originally 5
ture is shown in Fig. 1. The mandrel shall consist of a ⁄8-in.
ε1
approved in 1963. Last previous edition approved in 2008 as D2148 – 02 (2008) .
DOI: 10.1520/D2148-13.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or The last approved version of this historical standard is referenced on
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM www.astm.org.
4
Standards volume information, refer to the standard’s Document Summary page on Available from ASTM International Headquarters. Order Adjunct No.
the ASTM website. ADJD2148. Original adjunct produced in 1965.
*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
---------------------- Page: 1 ----------------------
D2148 − 13
tape. To obtain perfect half lapping, tilt the tack tester at an
appropriate angle as shown in Fig. 1. Wrap the tape on the
mandrel at a speed of approximately 18 in. (450 mm)/min.
Using the winding procedure and weights just described, half
lap the marked tape sample on the mandrel over the first piece
of tape. With the winding weight attached, return the test
fixture to a horizontal position and allow the tape to bond for
1 min. Remove the winding weight from the tape and the
handle from the fixture and proceed with the unwinding test.
7.2 Unwinding—After the tape has bonded for 1 min, attac
...
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.
´1
Designation: D2148 − 02 (Reapproved 2008) D2148 − 13 An American National Standard
Standard Test Methods for
Bondable Silicone Rubber Tapes Used for Electrical
1
Insulation
This standard is issued under the fixed designation D2148; 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
ε NOTE—The units statement in subsection 1.3 was corrected editorially in July 2008.
1. Scope Scope*
1.1 These test methods cover tests for bondable silicone rubber tapes which form a sealed structure either with the application
of heat (and pressure if needed) or by the process of auto-adhesion (self-fusing).
1.2 The methods appear in the following sections:
Test Method Section
Adhesion 3 – 9
Bond Strength 10 – 17
Dielectric Breakdown Voltage 18 – 25
Hardness 40
Length 32 and 33
Thickness 26 – 31
Width 35 – 39
1.3 The values stated in inch-pound units are to be regarded as standard, except for °C. The values in parentheses are
mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 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 a specific hazard statement see 22.1.1.
2. Referenced Documents
2
2.1 ASTM Standards:
D149 Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at
Commercial Power Frequencies
3
D374 Test Methods for Thickness of Solid Electrical Insulation (Withdrawn 2013)
D1000 Test Methods for Pressure-Sensitive Adhesive-Coated Tapes Used for Electrical and Electronic Applications
D1458 Test Methods for Fully Cured Silicone Rubber-Coated Glass Fabric and Tapes for Electrical Insulation
D2240 Test Method for Rubber Property—Durometer Hardness
3
D6054 Practice for Conditioning Electrical Insulating Materials for Testing (Withdrawn 2012)
2.2 ASTM Adjuncts:
4
Tack tester (one drawing)
ADHESION
3. Scope
3.1 This test method covers the determination of the self-adhesion of unsupported, self-fusing silicone rubber rectangular and
taper-edge (Note 1) tape designed for use as electrical insulation.
1
These methods are under the jurisdiction of ASTM Committee D09 on Electrical and Electronic Insulating Materials and are the direct responsibility of Subcommittee
D09.07 on Flexible and Rigid Insulating Materials.
Current edition approved May 1, 2008Nov. 1, 2013. Published July 2008November 2013. Originally approved in 1963. Last previous edition approved in 20022008 as
ε1
D2148 – 02 (2008) . DOI: 10.1520/D2148-02R08E01.10.1520/D2148-13.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
The last approved version of this historical standard is referenced on www.astm.org.
4
Available from ASTM International Headquarters. Order Adjunct No. ADJD2148. Original adjunct produced in 1965.
*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
---------------------- Page: 1 ----------------------
D2148 − 13
NOTE 1—Taper-edge tape includes such cross sections as triangular, lens, etc.
4. Significance and Use
4.1 Self-adhesion is a primary initial property since it affects layer-to-layer bonding. The integrity of the bond can significantly
affect the electrical and physical performance of the insulation system. Therefore, the degree of self-adhesion is directly related
to apparatus performance.
4.2 A high degree of self-adhesion is desirable for most electrical applications. In this test, a short unwinding length indicates
a high degree of self-adhesion.
4.3 This test method has been found useful as a quality control test for lot acceptance.
5. Apparatus
4
5
5.1 Inclined Mandrel Tack Test Fixture— A suggested fixture is shown in Fig. 1. The mandrel shall consist of a ⁄8-in.
(15.9-mm) diameter aluminum rod mounted in low-friction bearings. Good alignment of bearings is necessary for accurate
...
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