ASTM D4243-99(2004)e1
Historical Standard: ASTM D4243-99(2004)e1 Standard Test Method for Measurement of Average Viscometric Degree of Polymerization of New and Aged Electrical Papers and Boards
SUPERSEDED (see Active link, below)
ASTM D4243
1. Scope
1.1 This test method describes a standard procedure for determining the average viscometric degree of polymerization (abbreviated DP v ) 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--glucose monomers, C 6 H 10 O 5 , 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.
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
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
D1711 Terminology Relating to Electrical Insulation
Other Document
IEC60450 Measurement of the Average Viscometric Degree of Polymerization of New and Aged Electrical Papers Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.Keywords
aging; board; cellulose; cupriethylene-diamine; degree of polymerization; paper; pressboard; viscometry
; Aging board; Average viscometric degree of polymerization (DP v ); Cellulose and cellulose derivatives; Cupriethylene-diamine; Electrical insulating paper/paperboard; Paper; Polymerization;
Polymers (electrical insulation applications); Pressboard (electrical insulating); Scrub resistance; Viscosity--intrinsic;
ICS Code
ICS Number Code 29.035.10 (Paper and board insulating materials)
DOI: 10.1520/D4243-99R04E01
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