1、Designation: D4063 99 (Reapproved 2016)Standard Specification forPressboard for Electrical Insulating Purposes1This standard is issued under the fixed designation D4063; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of l
2、ast revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers pressboard for electrical insu-lating purposes, manufactured from kraft, cotton, or kraft and
3、cotton pulps. This board is intended for dielectrical or struc-tural purposes in transformers and other electrical apparatus.1.2 Electrical insulating boards are most commonly referredto (and will be referred to herein) as pressboard. Other termsused for pressboard include transformer board, fuller
4、board,and presspan.1.3 This specification covers pressboard having a nominalthickness of 0.030 to 0.315 in. (0.8 to 8.0 mm). For thinnermaterial refer to Specification D1305.1.4 The maximum thickness available will differ with thetype and the manufacturer. The maximum sheet size will differwith the
5、thickness, type, and manufacturer.1.5 Pressboard shall normally be plied wet without pasting.Unless specified by the purchaser, this specification does notinclude pressboard comprised of two or more sheets that havebeen laminated together using an adhesive.NOTE 1The materials described in this speci
6、fication are similar tocorresponding types of pressboard described in IEC Specification 641-3,Sheet 1, Types B.0.1, B.2.1, B.2.3, B.3.1, and B.3.3.1.6 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are
7、 provided for information onlyand are not considered standard.2. Referenced Documents2.1 ASTM Standards:2D1305 Specification for Electrical Insulating Paper andPaperboardSulfate (Kraft) Layer TypeD1711 Terminology Relating to Electrical InsulationD3394 Test Methods for Sampling and Testing Electrica
8、lInsulating Board2.2 IEC Standards-Publication:641-3, Specification for Pressboard and Presspaper for Elec-trical PurposesPart 333. Terminology3.1 Definitions:3.1.1 For definitions of terms used in this specification referto Terminology D1711.3.1.2 calendered pressboard, npressboard produced bydryin
9、g without restraint and then calendering between steelrolls to obtain the desired thickness and density.3.1.3 cotton pulp, ncellulose fibers normally obtained bypulping of new cotton garment cuttings.3.1.3.1 DiscussionIncluded in cotton pulp is pulp calledcotton-linter pulp which is derived from cot
10、ton fibers adheredto cotton seed but separated from cotton seed subsequent toginning.3.1.4 kraft pulp, n (unbleached sulfate pulp)cellulosefibers normally obtained from softwood (coniferous) treesusing the sulfate kraft process of cooking.3.1.5 precompressed pressboard, npressboard producedby press-
11、drying between heated platens to obtain desiredthickness and density.4. Classification4.1 This specification covers the following three types ofpressboard:4.1.1 Type 1High-purity calendered pressboard.4.1.2 Type 2Normal-purity calendered pressboard.4.1.3 Type 3Precompressed pressboard.5. Ordering In
12、formation5.1 Orders for material furnished under this specificationshall include:5.1.1 Name of material,5.1.2 Grade of pressboard (selected from Table 1),5.1.3 Quantity (weight or number of sheets),5.1.4 Dimensions (thickness, width, length), and1This specification is under the jurisdiction of ASTM
13、Committee D09 onElectrical and Electronic Insulating Materials and is the direct responsibility ofSubcommittee D09.19 on Dielectric Sheet and Roll Products (Disbanded 4/2016).Current edition approved May 15, 2016. Published May 2016. Originallyapproved in 1981. Last previous edition approved in 2009
14、 as D4063 99 (2009).DOI: 10.1520/D4063-99R16.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from
15、American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15.1.5 Additions or exceptions to the specification andsupplementary require
16、ments, if required, such as thermallyupgraded material.6. Materials and Manufacture6.1 The pressboard will be manufactured from unbleachedkraft pulp, cotton pulp, or a combination of unbleached kraftpulp and cotton pulp.6.2 The proportion of cotton pulp, by weight, will be asspecified in Table 1.6.3
17、 Cotton pulp in trace quantities in kraft pulp grades ispermitted. Kraft pulp in trace quantities in cotton pulp gradesis permitted.6.4 No ingredients other than the cellulose fibers listed in6.1 or additions listed in 5.1.5 shall be permitted.7. Property Requirements7.1 Pressboard shall conform to
18、the requirements listed inTables 2-4 as applicable.NOTE 2Properties for grades listed in Table 1 but not established inTables 2-4 are being considered.8. Workmanship, Finish, and Appearance8.1 The pressboard will have the thickness, density, surfacetexture, and color as agreed upon between the purch
19、aser andthe supplier.8.2 Sheets shall be of width and length with dimensionswithin limits agreed upon between the purchaser and thesupplier.8.3 Color will be tan to blue-gray, depending upon the gradeof pressboard.8.4 Types 1 and 2 will have a smooth calendered surface.Type 3 will have a fine-textur
20、ed finish from the press-driedoperation.8.5 The presence of dirt and other foreign materials isundesirable. The pressboard will be free of dirt, metal particles,and other foreign material.9. Sampling9.1 Sample in accordance with Test Methods D3394.10. Test Methods10.1 Test in accordance with the pro
21、cedures in Test MethodsD3394.11. Rejection and Rehearing11.1 If the results of any test performed by the purchaser donot conform to the requirements of this specification, at theoption of the manufacturer, the test shall be repeated by thepurchaser. Two additional sets of specimens from the batch, l
22、ot,or shipment shall be tested. If either of these two additional setsof specimens fails the repeated test, the material may berejected by the purchaser.11.2 Since some material properties may change due tostorage conditions, failure of material based on initial testsshall be reported to the manufac
23、turer within 60 days of receiptof the material by the purchaser.12. Product Marking12.1 No marks shall appear in the individual sheets exceptas mutually agreed upon between the purchaser and thesupplier.NOTE 3It is not unusual for manufacturing to mark sheets to identifygrain direction, name of manu
24、facturer, and, in some cases, grade.However, these marks should be agreed to by the purchaser.13. Packaging and Package Marking13.1 Pressboard shall be packed in waterproof wrapping onskids or in crates, boxes, or cartons so constructed as to protectTABLE 1 Classification of PressboardType 1High-Pur
25、ity Calendered PressboardGrade 1.1 kraftType 2Normal-Purity Calendered PressboardGrade 2.1.1 kraft low densityGrade 2.2.1 kraft normal densityGrade 2.3.1 kraft high densityGrade 2.3.2 50 % kraft/50 % cottonType 3Precompressed PressboardGrade 3.1.1 kraft low densityGrade 3.2.1 kraft normal densityGra
26、de 3.3 50 % kraft/50 % cottonTABLE 2 Type 1High-Purity Calendered PressboardGradeNumber 1.1.1Apparent density (Procedure A):0.030 to 0.050 in. (0.76 to 1.27 mm) g/cm31.00 to 1.150.051 to 0.090 in. (1.30 to 2.29 mm) g/cm30.95 to 1.100.091 to 0.140 in. (2.32 to 3.65 mm) g/cm30.90 to 1.050.140 in. (3.5
27、6 mm) g/cm30.90 to 1.05Thickness:0.030 to 0.050 in. (0.76 to 1.27 mm) % 100.051 to 0.090 in. (1.30 to 2.29 mm) % 80.091 to 0.140 in. (2.32 to 3.65 mm) % 60.140 in. (3.56 mm) % 6Moisture % 4.0 to 8.0Ash % max 0.75Aqueous extract conductivity S/cm max 20Chloride content ppm max 8.0Tensile strength, ma
28、chine direction:0.030 to 0.050 in. (0.76 to 1.27 mm) psi (MPa) min 9 000 (62)0.051 to 0.090 in. (1.30 to 2.29 mm) psi (MPa) min 8 000 (55)0.091 to 0.140 in. (2.32 to 3.65 mm) psi (MPa) min 8 000 (55)0.140 in. (3.56 mm) psi (MPa) min 7 000 (48)Tensile strength, cross machine direction:0.030 to 0.050
29、in. (0.76 to 1.27 mm) psi (MPa) min 5 000 (34)0.051 to 0.090 in. (1.30 to 2.29 mm) psi (MPa) min 4 500 (31)0.091 to 0.140 in. (2.32 to 3.65 mm) psi (MPa) min 4 000 (28)0.140 in. (3.56 mm) psi (MPa) min 3 500 (24)pH of aqueous extract: 6.0 to 9.0Dielectric strength in air:0.030 to 0.050 in. (0.76 to
30、1.27 mm) V/mil (kV/mm) min 225 (9)0.051 to 0.090 in. (1.30 to 2.29 mm) V/mil (kV/mm) min 200 (8)0.091 to 0.140 in. (2.32 to 3.65 mm) V/mil (kV/mm) min 200 (8)0.140 in. (3.56 mm) V/mil (kV/mm) min 175 (7)Dielectric strength in oil:0.030 to 0.050 in. (0.76 to 1.27 mm) V/mil (kV/mm) min 0.051 to 0.090
31、in. (1.30 to 2.29 mm) V/mil (kV/mm) min 0.091 to 0.140 in. (2.32 to 3.65 mm) V/mil (kV/mm) min 0.140 in. (3.56 mm) V/mil (kV/mm) min Shrinkage:Machine direction % max 0.75Cross-machine direction % max 1.25Compressibility at 3 000 psi (21 MPa),Procedure A% max 15D4063 99 (2016)2the pressboard during
32、normal transportation by common (orother) carrier, and in storage.13.2 Each container shall be marked as specified by thepurchaser.14. Keywords14.1 ash; board; calendered; chlorides; compressibility; cot-ton; density; dielectric strength; kraft; moisture; precom-pressed; pressboard; shrinkage; tensi
33、le strength; thicknessTABLE 3 Type 2Normal-Purity Calendered PressboardGrade Numbers2.1.1 2.2.1 2.3.1 2.3.2Apparent density (Procedure A):0.030 to 0.050 in. (0.76 to 1.27 mm) g/cm30.90 to 1.05 1.00 to 1.15 1.10 to 1.25 1.00 to 1.200.051 to 0.090 in. (1.30 to 2.29 mm) g/cm30.85 to 1.00 0.95 to 1.10 1
34、.10 to 1.25 1.00 to 1.200.091 to 0.140 in. (2.32 to 3.65 mm) g/cm30.80 to 0.95 0.80 to 0.95 1.05 to 1.20 1.00 to 1.200.140 in. (3.56 mm) g/cm30.80 to 0.95 0.80 to 0.95 1.05 to 1.20 1.00 to 1.20Thickness:0.030 to 0.050 in. (0.76 to 1.27 mm) % 10 10 10 7.50.051 to 0.090 in. (1.30 to 2.29 mm) % 8 8 8 7
35、.50.091 to 1.40 in. (2.32 to 3.56 mm) % 6 6 6 5.00.140 in. (3.56 mm) % 6 6 6 5.0Moisture % 4.0to8.0 4.0to8.0 4.0to9.0 4.0to8.0Ash % max 1.0 1.0 1.0 1.0Aqueous extract conductivity S/cm max 30 30 30 70Tensile strength, machine direction:0.030 to 0.050 in. (0.76 to 1.27 mm) psi (MPa) min 7 000 (48) 9
36、000 (62) 9 500 (66) 8 000 (55)0.051 to 0.090 in. (1.30 to 2.29 mm) psi (MPa) min 6 000 (41) 8 000 (55) 8 500 (59) 8 000 (55)0.091 to 0.140 in. (2.32 to 3.65 mm) psi (MPa) min 6 000 (41) 8 000 (55) 8 000 (55) 6 525 (45)0.140 in. (3.56 mm) psi (MPa) min 5 000 (34) 7 000 (48) 7 000 (48) 6 525 (45)Tensi
37、le strength, cross machine direction:0.030 to 0.050 in. (0.76 to 1.27 mm) psi (MPa) min 4 500 (31) 5 000 (34) 5 000 (34) 4 350 (30)0.051 to 0.090 in. (1.30 to 2.29 mm) psi (MPa) min 4 000 (28) 4 500 (31) 4 500 (31) 4 350 (30)0.091 to 0.140 in. (2.32 to 3.65 mm) psi (MPa) min 3 500 (24) 4 000 (28) 4
38、000 (28) 3 625 (25)0.140 in. (3.56 mm) psi (MPa) min 3 000 (21) 3 500 (24) 3 500 (24) 3 625 (25)pH of aqueous extract 6.0 to 9.5 6.0 to 9.5 6.0 to 9.5 6.0 to 9.0Dielectric strength in air:0.030 to 0.050 in. (0.76 to 1.27 mm) V/mil (kV/mm) min 200 (8) 200 (8) 200 (8) 237 (9.5)0.051 to 0.090 in. (1.30
39、 to 2.29 mm) V/mil (kV/mm) min 175 (7) 175 (7) 175 (7) 200 (8.0)0.091 to 0.140 in. (2.32 to 3.65 mm) V/mil (kV/mm) min 150 (6) 150 (6) 150 (6) 187 (7.5)0.140 in. (3.56 mm) V/mil (kV/mm) min 150 (6) 150 (6) 150 (6) 187 (7.5)Dielectric strength in oil:0.030 to 0.050 in. (0.76 to 1.27 mm) V/mil (kV/mm)
40、 min 700 (28) 1 000 (40)0.051 to 0.090 in. (1.30 to 2.29 mm) V/mil (kV/mm) min 652 (25) 750 (30)0.091 to 0.140 in. (2.32 to 3.65 mm) V/mil (kV/mm) min 550 (22) 625 (25)0.140 in. (3.56 mm) V/mil (kV/mm) min 500 (20) 625 (25)Shrinkage:Machine direction % max 0.75 0.75 0.75 1.00Cross machine direction
41、% max 1.25 1.25 1.00 1.50Compressibility at 3 000 psi (21 MPa), % max 30 20 15 Procedure AD4063 99 (2016)3ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised tha
42、t determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reappro
43、ved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you fe
44、el that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual rep
45、rints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the C
46、opyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 4 Type 3Precompressed PressboardGrade Numbers3.2.1 3.3Apparent density (Procedure A):0.030 to 0.063 in. (0.76 to 1.60 mm) g/cm31.00 to 1.15 .95 - 1.150.064 to 0.118 in. (1.63 to 3.00 mm) g/cm31.10 to 1.20 1.
47、05 - 1.200.119 to 0.236 in. (3.02 to 6.00 mm) g/cm31.15 to 1.25 1.10 - 1.200.237 to 0.315 in. (6.02 to 8.00 mm) g/cm31.20 to 1.30 1.15 - 1.30Thickness:0.118 in. (3.00 mm) % 10 7.50.119 to 0.236 in. (3.02 to 6.00 mm) % 9 5.00.237 to 0.315 in. (6.02 to 8.00 mm) % 7 5.0Moisture % max 6 6.0Ash % max 1.0
48、 1.0Aqueous extract conductivity S/cm max 35 50Tensile strength, machine direction:0.030 to 0.063 in. (0.76 to 1.60 mm) psi (MPa) min 14 500 (100) 12 325 (85)0.064 to 0.118 in. (1.63 to 3.00 mm) psi (MPa) min 15 250 (105) 13 050 (90)0.119 to 0.236 in. (3.02 to 6.00 mm) psi (MPa) min 16 000 (110) 13
49、050 (90)0.237 to 0.315 in. (6.02 to 8.00 mm) psi (MPa) min 16 000 (110) 13 050 (90)Tensile strength, cross machine direction:0.030 to 0.063 in. (0.76 to 1.60 mm) psi (MPa) min 10 000 (70) 6 525 (45)0.064 to 0.118 in. (1.63 to 3.00 mm) psi (MPa) min 11 500 (80) 7 250 (50)0.119 to 0.236 in. (3.02 to 6.00 mm) psi (MPa) min 12 250 (85) 7 250 (50)0.237 to 0.315 in. (6.02 to 8.00 mm) psi (MPa) min 12 250 (85) 7 250 (50)pH of aqueous extract 6.0to9.0 6.0-9.0Dielectric strength in air:0.030 to 0.06
