1、Designation: D 4063 99 (Reapproved 2004)An American National StandardStandard Specification forPressboard for Electrical Insulating Purposes1This standard is issued under the fixed designation D 4063; the number immediately following the designation indicates the year oforiginal adoption or, in the
2、case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers pressboard for electrical insu-lating purposes, manufactured
3、from kraft, cotton, or kraft andcotton 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 in
4、clude transformer board, fuller 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 D 1305.1.4 The maximum thickness available will differ with thetype and the manufacturer. The maximu
5、m sheet size will differwith the 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
6、materials described in this specification 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.3.3.2. Referenced Documents2.1 ASTM Standards:2D 1305 Specification for Electrical Insulating Paper andPaperboardSulfate (Kr
7、aft) Layer TypeD 1711 Terminology Relating to Electrical InsulationD 3394 Test Methods for Sampling and Testing ElectricalInsulating Board2.2 IEC Standards-Publication:641-3, Specification for Pressboard and Presspaper for Elec-trical PurposesPart 333. Terminology3.1 Definitions:3.1.1 For definition
8、s of terms used in this specification referto Terminology D 1711.3.1.2 calendered pressboard, npressboard produced bydrying 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 co
9、tton garment cuttings.3.1.3.1 DiscussionIncluded in cotton pulp is pulp calledcotton-linter pulp which is derived from cotton 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
10、(coniferous) treesusing the sulfate kraft process of cooking.3.1.5 precompressed pressboard, npressboard producedby press-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
11、 calendered pressboard.4.1.2 Type 2Normal-purity calendered pressboard.4.1.3 Type 3Precompressed pressboard.5. Ordering Information5.1 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 o
12、r number of sheets),5.1.4 Dimensions (thickness, width, length), and5.1.5 Additions or exceptions to the specification andsupplementary requirements, if required, such as thermallyupgraded material.6. Materials and Manufacture6.1 The pressboard will be manufactured from unbleachedkraft pulp, cotton
13、pulp, or a combination of unbleached kraftpulp and cotton pulp.1This specification is under the jurisdiction of ASTM Committee D09 onElectrical and Electronic Insulating Materials, and is the direct responsibility ofSubcommittee D09.19 on Dielectric Sheet and Roll Products.Current edition approved N
14、ov. 10, 1999. Published February 2000. Originallyapproved in 1981. Last previous edition approved in 1993 as D 4063 81 (1993)e1.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume informatio
15、n, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute, 11 W. 42nd St., 13thFloor, New York, NY 10036.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6.2 The proportio
16、n of cotton pulp, by weight, will be asspecified in Table 1.6.3 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 per
17、mitted.7. Property Requirements Property Requirements7.1 Pressboard shall conform to 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 hav
18、e the thickness, density, surfacetexture, and color as agreed upon between the purchaser 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.
19、4 Types 1 and 2 will have a smooth calendered surface.Type 3 will have a fine-textured 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 acc
20、ordance with Test Methods D 3394.10. Test Methods10.1 Test in accordance with the procedures in Test MethodsD 3394.11. 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
21、 shall be repeated by thepurchaser. Two additional sets of specimens from the batch, lot,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
22、conditions, failure of material based on initial testsshall be reported to the manufacturer 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
23、 not unusual for manufacturing to mark sheets to identifygrain direction, name of manufacturer, 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
24、cartons so constructed as to protectthe pressboard during normal transportation by common (orother) carrier, and in storage.TABLE 1 Classification of PressboardType 1High-Purity Calendered PressboardGrade 1.1 kraftType 2Normal-Purity Calendered PressboardGrade 2.1.1 kraft low densityGrade 2.2.1 kraf
25、t 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 densityGrade 3.3 50 % kraft/50 % cottonTABLE 2 Type 1High-Purity Calendered PressboardGradeNumber 1.1.1Apparent density (Procedure A):0.
26、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. (3.56 mm) g/cm30.90 to 1.05Thickness:0.030 to 0.050 in. (0.76 to 1.27 mm) % 6 100.051 to 0.090 in. (1.30 to 2.29 mm) % 6 80.091 to
27、 0.140 in. (2.32 to 3.65 mm) % 6 60.140 in. (3.56 mm) % 6 6Moisture % 4.0 to 8.0Ash % max 0.75Aqueous extract conductivity S/cm max 20Chloride content ppm max 8.0Tensile strength, machine 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
28、(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 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.
29、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 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.
30、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 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/m
31、il (kV/mm) min Shrinkage:Machine direction % max 0.75Cross-machine direction % max 1.25Compressibility at 3 000 psi (21 MPa),Procedure A% max 15D 4063 99 (2004)213.2 Each container shall be marked as specified by thepurchaser.14. Keywords14.1 ash; board; calendered; chlorides; compressibility; cot-t
32、on; density; dielectric strength; kraft; moisture; precom-pressed; pressboard; shrinkage; tensile 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
33、 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 1.10 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.
34、030 to 0.050 in. (0.76 to 1.27 mm) % 6 10 10 10 7.50.051 to 0.090 in. (1.30 to 2.29 mm) % 6 8887.50.091 to 1.40 in. (2.32 to 3.56 mm) % 6 666 00.140 in. (3.56 mm) % 6Moisture % 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 streng
35、th, machine direction:0.030 to 0.050 in. (0.76 to 1.27 mm) psi (MPa) min 7 000 (48) 9 000 (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
36、(45)0.140 in. (3.56 mm) psi (MPa) min 5 000 (34) 7 000 (48) 7 000 (48) 6 525 (45)Tensile 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)
37、 4 350 (30)0.091 to 0.140 in. (2.32 to 3.65 mm) psi (MPa) min 3 500 (24) 4 000 (28) 4 000 (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 t
38、o 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 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)
39、187 (7.5)Dielectric strength in oil:0.030 to 0.050 in. (0.76 to 1.27 mm) V/mil (kV/mm) 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)
40、 625 (25)Shrinkage:Machine direction % max 0.75 0.75 0.75 1.00Cross machine direction % max 1.25 1.25 1.00 1.50Compressibility at 3 000 psi (21 MPa), % max 30 20 15 Procedure AD 4063 99 (2004)3ASTM International takes no position respecting the validity of any patent rights asserted in connection wi
41、th any item mentionedin this standard. Users of this standard are expressly advised that 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 tech
42、nical committee and must be reviewed every five years andif not revised, either reapproved 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 considerat
43、ion at a meeting of theresponsible technical committee, which you may attend. If you feel 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 Ha
44、rbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (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(ww
45、w.astm.org).TABLE 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 1.05 - 1.200.119 to 0.236 in. (3.02 to 6.00 mm) g/cm31.15 to 1.25 1.10 - 1.20
46、0.237 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) % 6 10 7.50.119 to 0.236 in. (3.02 to 6.00 mm) % 6 95.00.237 to 0.315 in. (6.02 to 8.00 mm) % 6 75Moisture % max 6 6.0Ash % max 1.0 1.0Aqueous extract conductivity S/cm max 35 50Tensile strength, machine
47、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) 13 050 (90)0.237 to 0.315 in. (6.02 to 8.00 mm) psi (MPa) min 16 000 (110) 1
48、3 050 (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
49、.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 0.063 in. (0.76 to 1.60 mm) V/mil (kV/mm) min 275 (11) 250 (10)0.064 to 0.118 in. (1.63 to 3.00 mm) V/mil (kV/mm) min 250 (10) 225 (9)0.119 to 0.236 in. (3.02 to 6.00 mm) V/mil (kV/mm) min 225 (9) 200 (8)0.237 to 0.315 in. (6.02 to 8.00 mm) V/mil (kV/mm) min 200 (8) 200 (8)Dielectric strength in oil:0.030 to 0.063 in. (0.76 to 1.60 mm) V/mil (kV/mm) min 800 (32) 1 000 (40)0.064 to 0.118 in. (1.63 to 3.00 mm) V/mil (kV/mm)
