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ASTM D 4243 : 1999 : R2009

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by

Standard Test Method for Measurement of Average Viscometric Degree of Polymerization of New and Aged Electrical Papers and Boards

Available format(s)

Hardcopy , PDF

Superseded date

06-06-2023

Superseded by

ASTM D 4243 : 2016

Language(s)

English

Published date

01-10-2009

€67.30
Excluding VAT

Committee
D 09
DocumentType
Test Method
Pages
7
ProductNote
Reconfirmed 2009
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

1.1 This test method describes a standard procedure for determining the average viscometric degree of polymerization (abbreviated ) of new or aged electrical papers. The determination is made by measuring the intrinsic viscosity of a solution of the paper in an appropriate solvent.

1.2 The degree of polymerization (or the degree of condensation) of a particular cellulose molecule is the number of anhydro-β-glucose monomers, C6H10O5, in the cellulose molecule. Within a sample of paper, not all the cellulose molecules have the same degree of polymerization so that the mean value measured by viscometric methods is not necessarily the same as that which may be obtained by other methods.

1.3 This standard may involve hazardous materials, operations, and equipment. 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 to determine the applicability of regulatory limitations prior to use. See Section 9

ASTM D 5282 : 2005 : R2012 Standard Test Methods for Compatibility of Construction Material with Silicone Fluid Used for Electrical Insulation
ASTM D 3394 : 2016 Standard Test Methods for Sampling and Testing Electrical Insulating Board

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