ASTM D3376-18

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D3376 − 18
Standard Test Methods of
Sampling and Testing Pulps to be Used in the Manufacture
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of Electrical Insulation
This standard is issued under the fixed designation D3376; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
ASTM TAPPI
Method Method
1.1 These test methods cover the sampling and testing of
Procedure Sections Reference Reference
Pentosan Content of Pulp 29 & 30 . T223
cellulosic pulps for use in the manufacture of electrical
Resistance of Pulp to Disintegration 44 – 50 . . . T 239, UM 252
insulatingpapersandboardsorinthedirectapplicationofpulp
(Standard RPG)
fibers as insulation to electrical conductors.
Shive Count 34 – 39 . .
Solvent-Soluble Matter in Pulp 25 & 26 D202 .
NOTE 1—Consider the significance of any one pulp property test
Tensile Properties 65 – 69 D202 .
method,assetforthherein,withdiscretiondependingontheproductmade
Water-Extractable Chlorides 14 & 15 D202 .
from the pulp.
1.2 SectionsonReagents,Sampling,andReportareintegral
1.3.2 Handsheet characteristics determinable by these pro-
parts of each of the individual test methods that follow.
cedures appear in the following sections:
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
ASTM TAPPI
formed from the pulp.
Method Method
1.3.1 Bulk characteristics determinable by these procedures Procedure Sections Reference Reference
Air Resistance (Porosity) 57 & 58 D202 T 205
appear in the following sections:
Apparent Density 63 & 64 D202 T 205
ASTM TAPPI
Bursting Strength 59 & 60 D202 & D774/ T 205
Method Method
D774M
Procedure Sections Reference Reference
Folding Endurance (M.I.T.) 51 & 52 D202 & D2176 T 205
Aqueous Extract Conductivity 8 & 9 D202 .
Forming Handsheets for Physical 55 & 56 . T205
Aqueous Extract pH 10 & 11 D202 .
Tests of Pulp
Aqueous Extractable Acidity- 12 & 13 D202 .
Tensile Strength 65 & 66 D202 & D828 T 205
Alkalinity
Analysis of Ash for Cations by 70 – 78 D1193 & .
Atomic Absorption Spectropho- D2576
NOTE 2—Methods for Ash, Silica, selected cations from Ash, Heat
tometry
Stability, α, β, and γ Cellulose, Viscosity, Total Chlorine, Tear, and
Ash Content 79 – 82 D202 T 413
Dissipation Factor and Relative Permittivity, will be considered for
Dirt in Pulp 40 & 41 . T213
addition as methods are developed.
Fiber Analysis 23 & 24 D202 & D1030 .
Fiber Length of Pulp 42 & 43 . . . T 232, T 233
1.4 The values stated in SI units are to be regarded as the
Freeness (Canadian Standard 53 & 54 . T227
standard. The values given in parentheses are for information
Freeness)
Kappa Number/Permanganate 27 & 28 . . . T 236, UM 251 only.
Number (Substances Oxidizable
1.5 This standard does not purport to address all of the
by Permanganate)
Laboratory Processing of Pulp 51 & 52 . T200
safety concerns, if any, associated with its use. It is the
(Beater Method)
responsibility of the user of this standard to establish appro-
Moisture in Pulp 31 – 33 . T210
priate safety, health, and environmental practices and deter-
Neutral Aqueous Extractable Hard- 16 – 22 D202, D1126, .
ness in Pulp & D2576
mine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accor-
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dance with internationally recognized principles on standard-
These test methods are under the jurisdiction of ASTM Committee D09 on
Electrical and Electronic Insulating Materials and are the direct responsibility of
ization established in the Decision on Principles for the
Subcommittee D09.01 on Electrical Insulating Products.
Development of International Standards, Guides and Recom-
Current edition approved Nov. 1, 2018. Published November 2018. Originally
mendations issued by the World Trade Organization Technical
approved in 1975. Last previous edition approved in 2014 as D3376–14. DOI:
10.1520/D3376-18. Barriers to Trade (TBT) Committee.
*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
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D3376 − 18
2. Referenced Documents 3.2.2 hardness, n—a characteristic of water that represents
2 thetotalconcentrationofcalciumandmagnesiuminthewater,
2.1 ASTM Standards:
expressed as parts per million (ppm) CaCO .
3
D202Test Methods for Sampling and Testing Untreated
3.2
...