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ASTM D1931-99

(Specification)

Standard Specification for Fully Cured Silicone Rubber-Coated Glass Fabric and Tapes for Electrical Insulation

Standard Specification for Fully Cured Silicone Rubber-Coated Glass Fabric and Tapes for Electrical Insulation

SCOPE
1.1 This specification covers fully cured silicone rubber-coated glass fabric in sheet form, full-width rolls, and tapes to be used as electrical insulation.

General Information

Status
Historical
Publication Date
09-Oct-1999
ICS
59.080.40 - Coated fabrics
Technical Committee
D09 - Electrical and Electronic Insulating Materials
Drafting Committee
D09.07 - Electrical Insulating Materials
Current Stage
Ref Project

Relations

Replaced By
ASTM D1931-99(2004) - Standard Specification for Fully Cured Silicone Rubber-Coated Glass Fabric and Tapes for Electrical Insulation (Withdrawn 2013)
Effective Date
10-Oct-1999

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ASTM D1931-99 - Standard Specification for Fully Cured Silicone Rubber-Coated Glass Fabric and Tapes for Electrical InsulationASTM D1931-99 - Standard Specification for Fully Cured Silicone Rubber-Coated Glass Fabric and Tapes for Electrical Insulation
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Technical specification
ASTM D1931-99 - Standard Specification for Fully Cured Silicone Rubber-Coated Glass Fabric and Tapes for Electrical Insulation
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
An American National Standard
Designation: D 1931 – 99
Standard Specification for
Fully Cured Silicone Rubber-Coated Glass Fabric and Tapes
for Electrical Insulation
This standard is issued under the fixed designation D 1931; 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 following criteria may be used as a guide: in any given
shipment, 90 % should have no splice; the remaining 10 %
1.1 This specification covers fully cured silicone rubber-
may have one splice and this should be flagged. The manner of
coated glass fabric in sheet form, full-width rolls, and tapes to
splicing shall be agreed upon between the purchaser and the
be used as electrical insulation.
seller.
2. Referenced Documents
6. Dimensional Requirements (Finished Cloth)
2.1 ASTM Standards:
6.1 Width—Full-width rolls and sheets shall be 91 62cm
D 618 Practice for Conditioning Plastics for Testing
(36 6 1 in.) in width, and shall be supplied trimmed to not less
D 1458 Test Methods for Fully Cured Silicone Rubber-
3 than89cm(35in.)wide,unlessotherwisespecified.Individual
Coated Glass Fabric and Tapes for Electrical Insulation
measurements on tapes shall vary not more than 0.8 mm ( ⁄32
D 1711 Terminology Relating to Electrical Insulation
in.) from the specified width for tapes 38 mm (1 ⁄2 in.) or less
3. Terminology
in width, nor more than 1.6 mm ( ⁄16 in.) for tapes over 38 mm
in width.
3.1 Definitions:
6.2 Length—The nominal length or weight shall be as
3.1.1 Fordefinitionsoftermsusedinthisspecification,refer
specified in the purchase order. The measured lengths of
to Terminology D 1711.
individual rolls or sheets shall be not less than that specified.
4. Ordering Information
7. Test Methods
4.1 Orders for material covered by this specification shall
7.1 Appropriate sampling and test methods conforming to
include the following information:
Test Methods D 1458 shall be used to determine the confor-
4.1.1 Form (see Section 1),
mity of materials to this specification.
4.1.2 Desired nominal thickness, width, length, or weight,
4.1.3 Number of rolls per package,
8. Physical and Electrical Requirements
4.1.4 Marking of packages, and,
8.1 The properties of the silicone rubber-coated glass fabric
4.1.5 Whether mica dusting is required or not.
and tapes shall conform to those prescribed in Table 1.
5. Materials and Manufacture
9. Rejection and Rehearing
5.1 The glass fabric and the silicone rubber shall be of good
9.1 The purchaser reserves the right to reject any part of the
commercial quality and shall be such as to produce a product
shipment that does not conform to the requirements for
that will meet the requirements of this specification. The
packaging and marking as specified in Section 10.
surface of the coated fabric shall be free of blisters, the coated
9.2 The failure of 20 % or more of the sample rolls or sheets
fabric shall be free of wrinkles and creases, and the goods shall
to conform to any one of the requirements given in Sections 5,
be free of any dust or dirt such as might be picked up due to a
6, 7, and 8 shall constitute cause for rejection of the entire
static charge during processing.
shipment without further tests.
5.2 The material shall not be spliced unless agreed upon by
9.3 The failure of a sample roll to conform to the require-
the purchaser and the manufacturer. If necessary t
...

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5.1.1 In cases of a dispute arising from differences in reported test results when using Test Methods D4851 for acceptance testing of commercial shipments, the purchaser and the supplier should conduct comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties should take a group of test specimens which are as homogeneous as possible and from a lot of material of the type in question. The test specimens should then be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using appropriate statistical analysis for unpaired data and an acceptable probability level chosen by the two parties before the testing is begun. If a bias is found, either its cause must be found and corrected or the purchaser and the supplier must agree to interpret future test results with consideration of the known bias.  
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SCOPE
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8  
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