1、Designation: D 3368 04Standard Specification forFEP-Fluorocarbon Sheet and Film1This standard is issued under the fixed designation D 3368; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in pare
2、ntheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This specification covers unfilled, unpigmented FEP-fluorocarbon r
3、esin sheet and film less than 3.175 mm 0.125in. thick. Recycled materials are allowed in accordance with6.2.1.2 The values stated in SI units as detailed in IEEE/ASTMSI 10 are to be regarded as standard and the practices ofIEEE/ASTM SI 10 incorporated herein.1.3 The following safety hazards caveat p
4、ertains only to thetest methods portion, Section 14, of this specification: Thisstandard does not purport to address all of the safety concerns,if any, associated with its use. It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the
5、applicability of regulatory limita-tions prior to use.NOTE 1There is no similar or equivalent ISO standard.2. Referenced Documents2.1 ASTM Standards:2D 149 Test Method for Dielectric Breakdown Voltage andDielectric Strength of Electrical Insulating Materials atCommercial Power FrequenciesD 374 Test
6、Methods for Thickness of Solid Electrical Insu-lationD 618 Practice for Conditioning Plastics for TestingD 638 Test Method for Tensile Properties of PlasticsD 792 Test Methods for Density and Specific Gravity (Rela-tive Density) of Plastics by DisplacementD 882 Test Methods for Tensile Properties of
7、 Thin PlasticSheetingD 883 Terminology Relating to PlasticsD2116 Specification for FEP Fluorocarbon Molding andExtrusion MaterialsD 3892 Practice for Packaging/Packing of PlasticsD 5740 Guide for Writing Material Standards in the Clas-sification D 4000 FormatE 691 Practice for Conducting an Interlab
8、oratory Study toDetermine the Precision of a Test MethodIEEE/ASTM SI 10 Standard for Use of the InternationalSystem of Units (SI)2.2 Other Standard:TAPPI 411 Standard Thickness (Caliper) of Paper and PaperProducts33. Terminology3.1 DefinitionsFor definitions of terms used in this speci-fication, see
9、 Terminology D 883.3.1.1 lot, none production run or a uniform blend of twoor more production runs.4. Classification4.1 This specification covers four types of FEP-fluorocarbon sheet and film:4.1.1 Type IGeneral purpose.4.1.2 Type IICementable film. Type II materials can besubdivided into two grades
10、:4.1.2.1 Grade 1One side cementable, and4.1.2.2 Grade 2Two sides cementable.4.1.3 Type IIISpecial film for applications requiring un-usual flexural endurance or extreme thermal and chemicalservice.4.1.4 Type IVFilm for mold release applications.4.2 A line callout system is used to specify materials
11、in thisstandard. The system uses predefined cells to refer to specificaspects of this specification, which are illustrated as follows:1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials, Sect
12、ion D20.15.12 on Fluoropolymers.Current edition approved February 1, 2004. Published March 2004. Originallyapproved in 1975. Last previous edition approved in 1999 as D 3368 - 99.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org.
13、 For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from Technical Association of the Pulp and Paper Industry (TAPPI),P.O. Box 105113,Atlanta, GA30348; 15 Technology Parkway South, Norcross, GA30092. Phone: 1-800-332-8686.1
14、*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.SpecificationStandard NumberBlockType Grade Class SpecialNotes|Example: SpecificationD 3368 XX,II 1 , 0.051 mm thickFor
15、this example, the line callout would be SpecificationD 3368 XX, II 1, 0.051 mm thick. This callout specifies afilm of FEP that is cementable on one side and that has all ofthe properties listed for that type and grade in the appropriatespecified properties or tables, or both, in this specification.I
16、nclusion of a class is provided for in the system, but is notused in this particular specification. A comma is used as theseparator between the standard number and the type. Separa-tors are not needed between the type, grade, and class.4Provision for special notes is included in the system so thatot
17、her information can be provided when required, in this case,the thickness of the film. When special notes are used, theyshall be preceded by a comma.5. Ordering Information5.1 The sheet and film shall be furnished in the form ofsheets or rolls in accordance with good commercial practice.Rolls shall
18、be wound evenly and tightly on substantial coressuitably restrained to prevent unwinding.5.2 Dimensions of sheet and film with respect to length,width, and core diameter shall be upon agreement between thepurchaser and the manufacturer. The agreement shall applyalso to the maximum number of splices
19、per roll and tolerancesfor length and core.5.3 Requests for certification or test results shall be made atthe time of order placement.6. Materials and Manufacture6.1 The sheet and film shall be made from FEP-fluorocarbon resin as specified in Specification D2116withoutfiller or plasticizer.6.2 This
20、specification allows for the use of recycled, repro-cessed, and reworked FEP materials provided the following:6.2.1 The final physical, mechanical, and performance re-quirements as stated in this specification are met.6.2.2 The toxicological characteristics are essentially unal-tered from that of vi
21、rgin material.7. Other Requirements7.1 The sheet and film shall conform to the physical,mechanical, and performance property requirements specifiedin Table 1. The nominal thickness of sheet or film and thicknesstolerances shall be in accordance with Table 2.7.2 The film and sheet shall be uniform in
22、 appearance andshall be sufficiently free of contamination, wrinkles, holes,scratches, and other imperfections so as to be functionallyacceptable. The color shall be uniform and be characteristic ofunpigmented sheet or film that ranges from clear to translucentand is dependent upon the thickness.7.3
23、 Tolerances for width of rolls shall be 61.6 mm60.0625 in. for film or sheet thickness less than 0.508 mm0.020 in. and 63.2 mm 60.125 in. for sheet thickness equalto or greater than 0.508 mm.4See the ASTM Form and Style Manual. Available from ASTM Headquarters.TABLE 1 Detail Requirements for Propert
24、y ValuesType I Type II Type III Type IVTensile Strength, min, MPa psi, at nominal thickness, mm in.:0.0127 0.0005 13.8 2000 13.8 2000 . 11.0 16000.025 to 3.175 0.001 to 0.125 17.25 2500 17.25 2500 17.25 2500 14.5 2100Elongation at Break, min, %, at nominal thickness, mm in.:0.0127 to 0.025 0.0005 to
25、 0.001 175 175 . 1500.051 to 3.175 0.002 to 0.125 250 250 250 250Dimensional Change on Heating, max, %, at nominal thickness, mm in.:0.0127 to 0.025 0.0005 to 0.001 65 65 . 650.051 0.002 63 63 64 630.076 to 0.508 0.003 to 0.020 62 62 63 .0.762 to 1.524 0.030 to 0.060 . . 64 .2.285 to 3.175 0.090 to
26、0.125 . . 65 .Cementability, min, peel strength, kg/m g/in., at nominal thickness, mm in.:0.0127 0.0005 . 6.69 170 . .0.025 0.001 . 11.8 300 . .0.051 0.002 . 29.5 750 . .0.076 0.003 . 31.5 800 . .0.102 0.004 . 47.2 1200 . .0.127 0.005 . 78.7 2000 . .0.254 0.010 . 94.5 2400 . .0.508 0.020 . 94.5 2400
27、 . .Dielectric Strength, min, kV/mm V/mil, at nominal thickness, mm in.:0.127 to 0.025 0.0005 to 0.001 160 4000 160 4000 . .0.051 0.002 140 3500 140 3500 . .0.076 0.003 120 3000 120 3000 . .0.102 0.004 110 2750 110 2750 . .0.127 0.005 100 2500 100 2500 . .0.254 0.010 72 1800 72 1800 . .0.356 0.014 6
28、4 1600 64 1600 . .0.508 0.020 56 1400 56 1400 . .Density at 23C, g/cm32.13 to 2.17 2.13 to 2.17 2.13 to 2.17 2.13 to 2.17D33680428. Sampling8.1 Sampling shall be statistically adequate to satisfy therequirements of 15.4.9. Number of Tests9.1 One set of test specimens as prescribed in Section 10shall
29、 be considered sufficient for testing each batch. Theaverage result of the specimens tested shall conform to therequirements of this specification.10. Specimen Preparation10.1 Take test specimens across the width of film excludingareas of wrinkles, folds, gel, and other obvious, visuallydetermined,
30、imperfections.11. Conditioning11.1 For those tests where conditioning is required andunless otherwise specified in the test method, condition the testspecimens in accordance with Procedure A of Practice D 618for a period of at least 4 h prior to test.12. Apparatus12.1 Heat Sealer,5single heated jaw
31、with silicone rubberpad, temperature range from 150 to 275C 300 to 525F,pressure 138 kPa 20 psi, and dwell time 10 s.12.2 Rod,6or other means for coating aluminum evenlywith adhesive.13. Reagents and Materials13.1 Methyl Ethyl Ketone.13.2 Acrylic Adhesive.713.3 Anodized Aluminum,80.5 mm 0.019 in. th
32、ick. Othersheet aluminum, either plain or anodized, should be satisfac-tory if it can be shown that the peel failure of the seal isbetween the treated film surface and the adhesive, and notbetween the adhesive and the aluminum.14. Test Methods14.1 Test ConditionsUnless otherwise specified, conductte
33、sts at the standard laboratory temperature of 23 6 2C 70 to77F. Since this film and sheeting does not absorb water, theimportance of constant humidity during testing is not impor-tant.14.2 Specific GravityDetermine the specific gravity ontwo specimens in accordance with Method A of Test MethodsD 792
34、. Add two drops of a wetting agent (liquid detergent)9tothe water in order to reduce the surface tension and insurecomplete wetting of the sample.14.3 Tensile Properties:14.3.1 Film 0.254 mm 0.010 in. or less in nominalthickness.14.3.1.1 Determine the tensile strength and elongation inaccordance wit
35、h Method A of Test Methods D 882.14.3.2 Sheet greater than 0.254 mm 0.010 in. in nominalthickness.14.3.2.1 Cut five bars with the microtensile die shown inFig. 1. If the die is the steel rule type it shall have a curvatureof 4 6 0.8 mm 532 6132 in. Tabs at each end of the dielonger than specified in
36、 Fig. 1 are allowed.14.3.2.2 Determine the tensile properties in accordance withthe procedures described in Test Method D 638, except that thespecimens shall be as detailed in 14.3.1-14.3.2.1, the initial jawseparation shall be 22.2 6 0.13 mm 0.875 6 0.005 in., andthe speed of testing shall be 51 mm
37、/min 2 in./min. Clamp thespecimen with essentially equal lengths of the tabs in each jaw.If an extensiometer is not available, the elongation at break isdetermined from the chart record, expressing the value as apercentage of the initial jaw separation. Average the testresults. In making the test fo
38、r tensile properties, a full-scaleload of 22.5 kg 50 lb has been found suitable. If thespecimens break quickly, increase the chart speed so that the5Sentinel Model 12AS or 12-12AS, available from Packaging Industries Group,Inc., 130 North St., Hyannis, MA 02601, or equivalent, has been found satisfa
39、ctoryfor this purpose.6No. 24 “Draw Down” rod, available from R. D. Specialities, Inc., P.O. Box 206,Webster, NY 14580, has been found satisfactory for this purpose.7No. 68040 acrylic adhesive available from E. I. DuPont de Nemours “Joy” detergent, Proctor and Gamble, Inc.; and “Triton” X-100, Rohm
40、and Haas Co.TABLE 2 Thickness and Tolerance RequirementsNominal Thickness,mm in.ApplicableTypesThickness, mm in.min max0.0127 0.0005 I, II, IV 0.0089 0.00035 0.0165 0.000650.025 0.001 I, II, IV 0.0177 0.0007 0.033 0.00130.051 0.002 I, II, III 0.038 0.0015 0.0635 0.00250.076 0.003 I, II, III 0.05715
41、0.00225 0.094 0.003750.102 0.004 I, II, III 0.080 0.00315 0.123 0.004850.127 0.005 I, II, III 0.102 0.004 0.152 0.0060.254 0.010 I, II, III 0.216 0.0085 0.292 0.00150.356 0.014 I 0.320 0.0126 0.391 0.01540.508 0.020 I, II, III 0.432 0.017 0.584 0.0230.762 0.030 I, III 0.648 0.0255 0.876 0.03451.016
42、0.040 III 0.889 0.0350 1.143 0.04501.524 0.060 III 1.372 0.054 1.676 0.06662.413 0.095 III 2.172 0.0855 2.654 0.10453.175 0.125 III 2.921 0.113 3.429 0.137D3368043chart record for each specimen covers at least 51 mm 2 in. onthe time axis of the chart.NOTE 2In determining elongation from the chart re
43、cord, draw aperpendicular from the break point to the time axis. Measure the distancealong the time axis from the intersection of this perpendicular with theaxis to the intersection of an extension of the linear part of the load-timecurve and the time axis. Then, calculate percent elongation as foll
44、ows:Elongation 5 100d/22.2 or 0.875!m (1)where:d = distance on chart, mm in.,m = hart speed magnification,= chart speed/crosshead speed (both in same units), and22.2 = factor when d is in millimetres, or0.875 = factor when d is in inches.14.4 Dielectric StrengthDetermine the dielectric strengthin ac
45、cordance with Test Methods D 149, using the short-timetest and a 6.35-mm 14-in. brass electrode with a 0.79-mm132-in. radius.14.5 Dimensional Change on HeatingDetermine length-wise change in dimensions by averaging five measurements onspecimens immediately before and after oven heating. Eachspecimen
46、 shall be 101.6 6 1.6 by 101.6 6 1.6 mm 4 6116 by4 6116 in. and be freely suspended in an oven controlled at200 6 3C 392 6 5.4F for a minimum of 30 min. After theheating period, cool the specimens to 23 6 2C 73.4 6 3.6F,and remeasure them.14.6 CementabilitySeal the treated surface of the materialby
47、the application of controlled heat, pressure, and time ofdwell to an adhesive-coated strip of aluminum sheet. Measurethe peel strength at a peel angle of 180, and a speed of 30.5cm/min 12 in./min.14.6.1 Procedure for Preparation of Adhesive-Coated Alu-minum:14.6.2 Coat sheets of aluminum 254 by 254
48、mm 10 by 10in. evenly with No. 68040 adhesive using a No. 24 “DrawDown” rod and allow to dry in air for 8 h. The thickness ofcoating is not critical but it is important that the coating besmooth and bubble-free. Use methyl ethyl ketone to thin theadhesive if necessary, and for cleaning the equipment.14.6.3 Cut the coated sheets into strips 38.1 by 127 mm 1.5by 5 in. and store in a desiccator. It is not advisable to preparemore thana2or3-month supply of coated aluminum at onetime, as the adhesive slowly crosslinks in time and sealstrength values are lowered.14.6.4 Cut five 25.4 by 1
