ASTM D3376-14
Standard Test Methods of Sampling and Testing Pulps to be Used in the Manufacture of Electrical Insulation

Standard No.

ASTM D3376-14

Release Date

2014

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D3376-18

Latest

ASTM D3376-18

Scope

8.1 The conductivity of the water extract of electrical grade pulp results from electrolytic impurities in the pulp potentially present as ionizable acids, bases, salts, or a combination of these. The presence of electrolytic impurities in electrical insulation is undesirable as they tend to lower insulation resistance and have corrosion-producing tendencies under conditions of applied potential. When comparing test data, note that the extract conductivity of pulps, especially those of high purity, changes with time after manufacturing in some instances. This test is useful for routine acceptance testing, the comparison of different pulps, and research work.6

1.1 These test methods cover the sampling and testing of cellulosic pulps for use in the manufacture of electrical insulating papers and boards or in the direct application of pulp fibers as insulation to electrical conductors.

Note 1: The significance of any one pulp property test method, as set forth herein, should be considered with discretion depending on the product made from the pulp.

1.2 Sections on Reagents, Sampling, and Report are integral parts of each of the individual test methods that follow.

1.3 Each test method is described as being a measure of either a bulk property of the pulp or a property of a handsheet formed from the pulp.

1.3.1 Bulk characteristics determinable by these procedures appear in the following sections:

Procedure	Sections	ASTM Method Reference	TAPPI Method Reference
Aqueous Extract Conductivity	8 and 9	D202	...
Aqueous Extract pH	10 and 11	ASTM D3376-14 Referenced Document ASTM D1030 Standard Test Method for Fiber Analysis of Paper and Paperboard ASTM D1126 Standard Test Method for Hardness in Water ASTM D1193 Standard Specification for Reagent Water ASTM D1711 Standard Terminology Relating to Electrical Insulation ASTM D202 Standard Test Methods for Sampling and Testing Untreated Paper Used for Electrical Insulation ASTM D2176 Standard Test Method for Folding Endurance of Paper by the M.I.T. Tester ASTM D774/D774M Standard Test Method for Bursting Strength of Paper ASTM D828 Standard Test Method for Tensile Properties of Paper and Paperboard Using Constant-Rate-of-Elongation Apparatus ASTM E29 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications ASTM D3376-14 history 2018 ASTM D3376-18 Standard Test Methods of Sampling and Testing Pulps to be Used in the Manufacture of Electrical Insulation 2014 ASTM D3376-14 Standard Test Methods of Sampling and Testing Pulps to be Used in the Manufacture of Electrical Insulation 1988 ASTM D3376-88(2009) Standard Test Methods of Sampling and Testing Pulps to be Used in the Manufacture of Electrical Insulation 2005 ASTM D3376-88(2005) Standard Test Methods of Sampling and Testing Pulps to be Used in the Manufacture of Electrical Insulation 1988 ASTM D3376-88(2000) Standard Test Methods of Sampling and Testing Pulps to be Used in the Manufacture of Electrical Insulation Copyright ©2024 All Rights Reserved